author | bpb |
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parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.nio.file; |
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import java.io.File; |
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import java.io.IOException; |
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import java.net.URI; |
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import java.nio.file.spi.FileSystemProvider; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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/** |
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* An object that may be used to locate a file in a file system. It will |
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* typically represent a system dependent file path. |
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* |
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* <p> A {@code Path} represents a path that is hierarchical and composed of a |
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* sequence of directory and file name elements separated by a special separator |
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* or delimiter. A <em>root component</em>, that identifies a file system |
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* hierarchy, may also be present. The name element that is <em>farthest</em> |
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* from the root of the directory hierarchy is the name of a file or directory. |
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* The other name elements are directory names. A {@code Path} can represent a |
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* root, a root and a sequence of names, or simply one or more name elements. |
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* A {@code Path} is considered to be an <i>empty path</i> if it consists |
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* solely of one name element that is empty. Accessing a file using an |
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* <i>empty path</i> is equivalent to accessing the default directory of the |
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* file system. {@code Path} defines the {@link #getFileName() getFileName}, |
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* {@link #getParent getParent}, {@link #getRoot getRoot}, and {@link #subpath |
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* subpath} methods to access the path components or a subsequence of its name |
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* elements. |
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* |
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* <p> In addition to accessing the components of a path, a {@code Path} also |
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* defines the {@link #resolve(Path) resolve} and {@link #resolveSibling(Path) |
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* resolveSibling} methods to combine paths. The {@link #relativize relativize} |
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* method that can be used to construct a relative path between two paths. |
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* Paths can be {@link #compareTo compared}, and tested against each other using |
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* the {@link #startsWith startsWith} and {@link #endsWith endsWith} methods. |
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* |
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* <p> This interface extends {@link Watchable} interface so that a directory |
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* located by a path can be {@link #register registered} with a {@link |
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* WatchService} and entries in the directory watched. </p> |
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* |
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* <p> <b>WARNING:</b> This interface is only intended to be implemented by |
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* those developing custom file system implementations. Methods may be added to |
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* this interface in future releases. </p> |
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* |
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* <h2>Accessing Files</h2> |
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* <p> Paths may be used with the {@link Files} class to operate on files, |
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* directories, and other types of files. For example, suppose we want a {@link |
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* java.io.BufferedReader} to read text from a file "{@code access.log}". The |
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* file is located in a directory "{@code logs}" relative to the current working |
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* directory and is UTF-8 encoded. |
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* <pre> |
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* Path path = FileSystems.getDefault().getPath("logs", "access.log"); |
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* BufferedReader reader = Files.newBufferedReader(path, StandardCharsets.UTF_8); |
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* </pre> |
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* |
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* <a id="interop"></a><h2>Interoperability</h2> |
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* <p> Paths associated with the default {@link |
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* java.nio.file.spi.FileSystemProvider provider} are generally interoperable |
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* with the {@link java.io.File java.io.File} class. Paths created by other |
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* providers are unlikely to be interoperable with the abstract path names |
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* represented by {@code java.io.File}. The {@link java.io.File#toPath toPath} |
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* method may be used to obtain a {@code Path} from the abstract path name |
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* represented by a {@code java.io.File} object. The resulting {@code Path} can |
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* be used to operate on the same file as the {@code java.io.File} object. In |
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* addition, the {@link #toFile toFile} method is useful to construct a {@code |
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* File} from the {@code String} representation of a {@code Path}. |
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* |
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* <h2>Concurrency</h2> |
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* <p> Implementations of this interface are immutable and safe for use by |
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* multiple concurrent threads. |
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* |
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* @since 1.7 |
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*/ |
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public interface Path |
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extends Comparable<Path>, Iterable<Path>, Watchable |
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{ |
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/** |
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* Returns a {@code Path} by converting a path string, or a sequence of |
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* strings that when joined form a path string. If {@code more} does not |
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* specify any elements then the value of the {@code first} parameter is |
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* the path string to convert. If {@code more} specifies one or more |
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* elements then each non-empty string, including {@code first}, is |
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* considered to be a sequence of name elements and is joined to form a |
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* path string. The details as to how the Strings are joined is provider |
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* specific but typically they will be joined using the |
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* {@link FileSystem#getSeparator name-separator} as the separator. |
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* For example, if the name separator is "{@code /}" and |
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* {@code getPath("/foo","bar","gus")} is invoked, then the path string |
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* {@code "/foo/bar/gus"} is converted to a {@code Path}. A {@code Path} |
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* representing an empty path is returned if {@code first} is the empty |
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* string and {@code more} does not contain any non-empty strings. |
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* |
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* <p> The {@code Path} is obtained by invoking the {@link FileSystem#getPath |
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* getPath} method of the {@link FileSystems#getDefault default} {@link |
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* FileSystem}. |
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* |
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* <p> Note that while this method is very convenient, using it will imply |
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* an assumed reference to the default {@code FileSystem} and limit the |
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* utility of the calling code. Hence it should not be used in library code |
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* intended for flexible reuse. A more flexible alternative is to use an |
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* existing {@code Path} instance as an anchor, such as: |
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* <pre>{@code |
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* Path dir = ... |
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* Path path = dir.resolve("file"); |
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* }</pre> |
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* |
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* @param first |
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* the path string or initial part of the path string |
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* @param more |
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* additional strings to be joined to form the path string |
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* |
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* @return the resulting {@code Path} |
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* |
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* @throws InvalidPathException |
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* if the path string cannot be converted to a {@code Path} |
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* |
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* @see FileSystem#getPath |
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* |
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* @since 11 |
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*/ |
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public static Path of(String first, String... more) { |
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return FileSystems.getDefault().getPath(first, more); |
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} |
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|
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/** |
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* Returns a {@code Path} by converting a URI. |
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* |
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* <p> This method iterates over the {@link FileSystemProvider#installedProviders() |
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* installed} providers to locate the provider that is identified by the |
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* URI {@link URI#getScheme scheme} of the given URI. URI schemes are |
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* compared without regard to case. If the provider is found then its {@link |
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* FileSystemProvider#getPath getPath} method is invoked to convert the |
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* URI. |
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* |
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* <p> In the case of the default provider, identified by the URI scheme |
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* "file", the given URI has a non-empty path component, and undefined query |
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* and fragment components. Whether the authority component may be present |
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* is platform specific. The returned {@code Path} is associated with the |
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* {@link FileSystems#getDefault default} file system. |
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* |
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* <p> The default provider provides a similar <em>round-trip</em> guarantee |
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* to the {@link java.io.File} class. For a given {@code Path} <i>p</i> it |
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* is guaranteed that |
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* <blockquote>{@code |
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* Path.of(}<i>p</i>{@code .}{@link Path#toUri() toUri}{@code ()).equals(} |
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* <i>p</i>{@code .}{@link Path#toAbsolutePath() toAbsolutePath}{@code ())} |
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* </blockquote> |
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* so long as the original {@code Path}, the {@code URI}, and the new {@code |
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* Path} are all created in (possibly different invocations of) the same |
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* Java virtual machine. Whether other providers make any guarantees is |
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* provider specific and therefore unspecified. |
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* |
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* @param uri |
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* the URI to convert |
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* |
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* @return the resulting {@code Path} |
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* |
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* @throws IllegalArgumentException |
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* if preconditions on the {@code uri} parameter do not hold. The |
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* format of the URI is provider specific. |
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* @throws FileSystemNotFoundException |
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* The file system, identified by the URI, does not exist and |
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* cannot be created automatically, or the provider identified by |
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* the URI's scheme component is not installed |
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* @throws SecurityException |
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* if a security manager is installed and it denies an unspecified |
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* permission to access the file system |
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* |
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* @since 11 |
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*/ |
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public static Path of(URI uri) { |
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String scheme = uri.getScheme(); |
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if (scheme == null) |
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throw new IllegalArgumentException("Missing scheme"); |
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|
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// check for default provider to avoid loading of installed providers |
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if (scheme.equalsIgnoreCase("file")) |
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return FileSystems.getDefault().provider().getPath(uri); |
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|
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// try to find provider |
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for (FileSystemProvider provider: FileSystemProvider.installedProviders()) { |
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if (provider.getScheme().equalsIgnoreCase(scheme)) { |
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return provider.getPath(uri); |
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} |
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} |
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|
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throw new FileSystemNotFoundException("Provider \"" + scheme + "\" not installed"); |
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} |
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|
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/** |
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* Returns the file system that created this object. |
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* |
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* @return the file system that created this object |
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*/ |
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FileSystem getFileSystem(); |
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|
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/** |
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* Tells whether or not this path is absolute. |
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* |
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* <p> An absolute path is complete in that it doesn't need to be combined |
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* with other path information in order to locate a file. |
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* |
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* @return {@code true} if, and only if, this path is absolute |
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*/ |
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boolean isAbsolute(); |
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|
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/** |
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* Returns the root component of this path as a {@code Path} object, |
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* or {@code null} if this path does not have a root component. |
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* |
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* @return a path representing the root component of this path, |
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* or {@code null} |
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*/ |
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Path getRoot(); |
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|
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/** |
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* Returns the name of the file or directory denoted by this path as a |
243 |
* {@code Path} object. The file name is the <em>farthest</em> element from |
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* the root in the directory hierarchy. |
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* |
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* @return a path representing the name of the file or directory, or |
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* {@code null} if this path has zero elements |
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*/ |
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Path getFileName(); |
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|
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/** |
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* Returns the <em>parent path</em>, or {@code null} if this path does not |
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* have a parent. |
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* |
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* <p> The parent of this path object consists of this path's root |
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* component, if any, and each element in the path except for the |
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* <em>farthest</em> from the root in the directory hierarchy. This method |
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* does not access the file system; the path or its parent may not exist. |
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* Furthermore, this method does not eliminate special names such as "." |
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* and ".." that may be used in some implementations. On UNIX for example, |
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* the parent of "{@code /a/b/c}" is "{@code /a/b}", and the parent of |
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* {@code "x/y/.}" is "{@code x/y}". This method may be used with the {@link |
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* #normalize normalize} method, to eliminate redundant names, for cases where |
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* <em>shell-like</em> navigation is required. |
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* |
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* <p> If this path has more than one element, and no root component, then |
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* this method is equivalent to evaluating the expression: |
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* <blockquote><pre> |
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* subpath(0, getNameCount()-1); |
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* </pre></blockquote> |
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* |
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* @return a path representing the path's parent |
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*/ |
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Path getParent(); |
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|
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/** |
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* Returns the number of name elements in the path. |
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* |
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* @return the number of elements in the path, or {@code 0} if this path |
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* only represents a root component |
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*/ |
8158 | 282 |
int getNameCount(); |
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283 |
|
8158 | 284 |
/** |
285 |
* Returns a name element of this path as a {@code Path} object. |
|
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* |
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* <p> The {@code index} parameter is the index of the name element to return. |
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* The element that is <em>closest</em> to the root in the directory hierarchy |
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* has index {@code 0}. The element that is <em>farthest</em> from the root |
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* has index {@link #getNameCount count}{@code -1}. |
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* |
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* @param index |
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* the index of the element |
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294 |
* |
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* @return the name element |
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* |
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* @throws IllegalArgumentException |
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298 |
* if {@code index} is negative, {@code index} is greater than or |
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* equal to the number of elements, or this path has zero name |
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* elements |
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*/ |
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Path getName(int index); |
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303 |
|
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304 |
/** |
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305 |
* Returns a relative {@code Path} that is a subsequence of the name |
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306 |
* elements of this path. |
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|
307 |
* |
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|
308 |
* <p> The {@code beginIndex} and {@code endIndex} parameters specify the |
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309 |
* subsequence of name elements. The name that is <em>closest</em> to the root |
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310 |
* in the directory hierarchy has index {@code 0}. The name that is |
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* <em>farthest</em> from the root has index {@link #getNameCount |
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* count}{@code -1}. The returned {@code Path} object has the name elements |
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|
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* that begin at {@code beginIndex} and extend to the element at index {@code |
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|
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* endIndex-1}. |
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|
315 |
* |
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|
316 |
* @param beginIndex |
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* the index of the first element, inclusive |
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318 |
* @param endIndex |
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* the index of the last element, exclusive |
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320 |
* |
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321 |
* @return a new {@code Path} object that is a subsequence of the name |
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* elements in this {@code Path} |
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|
323 |
* |
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|
324 |
* @throws IllegalArgumentException |
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|
325 |
* if {@code beginIndex} is negative, or greater than or equal to |
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|
326 |
* the number of elements. If {@code endIndex} is less than or |
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|
327 |
* equal to {@code beginIndex}, or larger than the number of elements. |
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|
328 |
*/ |
8158 | 329 |
Path subpath(int beginIndex, int endIndex); |
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|
330 |
|
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|
331 |
/** |
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|
332 |
* Tests if this path starts with the given path. |
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|
333 |
* |
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|
334 |
* <p> This path <em>starts</em> with the given path if this path's root |
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|
335 |
* component <em>starts</em> with the root component of the given path, |
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|
336 |
* and this path starts with the same name elements as the given path. |
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|
337 |
* If the given path has more name elements than this path then {@code false} |
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|
338 |
* is returned. |
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|
339 |
* |
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|
340 |
* <p> Whether or not the root component of this path starts with the root |
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|
341 |
* component of the given path is file system specific. If this path does |
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|
342 |
* not have a root component and the given path has a root component then |
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|
343 |
* this path does not start with the given path. |
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|
344 |
* |
8808 | 345 |
* <p> If the given path is associated with a different {@code FileSystem} |
346 |
* to this path then {@code false} is returned. |
|
347 |
* |
|
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|
348 |
* @param other |
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349 |
* the given path |
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|
350 |
* |
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|
351 |
* @return {@code true} if this path starts with the given path; otherwise |
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|
352 |
* {@code false} |
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|
353 |
*/ |
8158 | 354 |
boolean startsWith(Path other); |
355 |
||
356 |
/** |
|
357 |
* Tests if this path starts with a {@code Path}, constructed by converting |
|
358 |
* the given path string, in exactly the manner specified by the {@link |
|
359 |
* #startsWith(Path) startsWith(Path)} method. On UNIX for example, the path |
|
360 |
* "{@code foo/bar}" starts with "{@code foo}" and "{@code foo/bar}". It |
|
361 |
* does not start with "{@code f}" or "{@code fo}". |
|
362 |
* |
|
28244
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|
363 |
* @implSpec |
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|
364 |
* The default implementation is equivalent for this path to: |
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|
365 |
* <pre>{@code |
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|
366 |
* startsWith(getFileSystem().getPath(other)); |
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|
367 |
* }</pre> |
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|
368 |
* |
8158 | 369 |
* @param other |
370 |
* the given path string |
|
371 |
* |
|
372 |
* @return {@code true} if this path starts with the given path; otherwise |
|
373 |
* {@code false} |
|
374 |
* |
|
375 |
* @throws InvalidPathException |
|
376 |
* If the path string cannot be converted to a Path. |
|
377 |
*/ |
|
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|
378 |
default boolean startsWith(String other) { |
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|
379 |
return startsWith(getFileSystem().getPath(other)); |
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|
380 |
} |
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|
381 |
|
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|
382 |
/** |
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|
383 |
* Tests if this path ends with the given path. |
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|
384 |
* |
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|
385 |
* <p> If the given path has <em>N</em> elements, and no root component, |
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|
386 |
* and this path has <em>N</em> or more elements, then this path ends with |
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|
387 |
* the given path if the last <em>N</em> elements of each path, starting at |
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|
388 |
* the element farthest from the root, are equal. |
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|
389 |
* |
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|
390 |
* <p> If the given path has a root component then this path ends with the |
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|
391 |
* given path if the root component of this path <em>ends with</em> the root |
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|
392 |
* component of the given path, and the corresponding elements of both paths |
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|
393 |
* are equal. Whether or not the root component of this path ends with the |
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|
394 |
* root component of the given path is file system specific. If this path |
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|
395 |
* does not have a root component and the given path has a root component |
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|
396 |
* then this path does not end with the given path. |
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|
397 |
* |
8808 | 398 |
* <p> If the given path is associated with a different {@code FileSystem} |
399 |
* to this path then {@code false} is returned. |
|
400 |
* |
|
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|
401 |
* @param other |
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|
402 |
* the given path |
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|
403 |
* |
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|
404 |
* @return {@code true} if this path ends with the given path; otherwise |
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|
405 |
* {@code false} |
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|
406 |
*/ |
8158 | 407 |
boolean endsWith(Path other); |
408 |
||
409 |
/** |
|
410 |
* Tests if this path ends with a {@code Path}, constructed by converting |
|
411 |
* the given path string, in exactly the manner specified by the {@link |
|
412 |
* #endsWith(Path) endsWith(Path)} method. On UNIX for example, the path |
|
413 |
* "{@code foo/bar}" ends with "{@code foo/bar}" and "{@code bar}". It does |
|
8808 | 414 |
* not end with "{@code r}" or "{@code /bar}". Note that trailing separators |
415 |
* are not taken into account, and so invoking this method on the {@code |
|
416 |
* Path}"{@code foo/bar}" with the {@code String} "{@code bar/}" returns |
|
417 |
* {@code true}. |
|
8158 | 418 |
* |
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419 |
* @implSpec |
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|
420 |
* The default implementation is equivalent for this path to: |
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|
421 |
* <pre>{@code |
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|
422 |
* endsWith(getFileSystem().getPath(other)); |
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|
423 |
* }</pre> |
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|
424 |
* |
8158 | 425 |
* @param other |
426 |
* the given path string |
|
427 |
* |
|
14322 | 428 |
* @return {@code true} if this path ends with the given path; otherwise |
8158 | 429 |
* {@code false} |
430 |
* |
|
431 |
* @throws InvalidPathException |
|
432 |
* If the path string cannot be converted to a Path. |
|
433 |
*/ |
|
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|
434 |
default boolean endsWith(String other) { |
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|
435 |
return endsWith(getFileSystem().getPath(other)); |
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|
436 |
} |
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|
437 |
|
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|
438 |
/** |
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|
439 |
* Returns a path that is this path with redundant name elements eliminated. |
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|
440 |
* |
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|
441 |
* <p> The precise definition of this method is implementation dependent but |
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|
442 |
* in general it derives from this path, a path that does not contain |
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|
443 |
* <em>redundant</em> name elements. In many file systems, the "{@code .}" |
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|
444 |
* and "{@code ..}" are special names used to indicate the current directory |
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|
445 |
* and parent directory. In such file systems all occurrences of "{@code .}" |
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|
446 |
* are considered redundant. If a "{@code ..}" is preceded by a |
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|
447 |
* non-"{@code ..}" name then both names are considered redundant (the |
20536 | 448 |
* process to identify such names is repeated until it is no longer |
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|
449 |
* applicable). |
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|
450 |
* |
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|
451 |
* <p> This method does not access the file system; the path may not locate |
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|
452 |
* a file that exists. Eliminating "{@code ..}" and a preceding name from a |
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|
453 |
* path may result in the path that locates a different file than the original |
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|
454 |
* path. This can arise when the preceding name is a symbolic link. |
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|
455 |
* |
8158 | 456 |
* @return the resulting path or this path if it does not contain |
457 |
* redundant name elements; an empty path is returned if this path |
|
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|
458 |
* does not have a root component and all name elements are redundant |
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|
459 |
* |
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|
460 |
* @see #getParent |
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|
461 |
* @see #toRealPath |
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|
462 |
*/ |
8158 | 463 |
Path normalize(); |
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|
464 |
|
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|
465 |
// -- resolution and relativization -- |
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|
466 |
|
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|
467 |
/** |
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|
468 |
* Resolve the given path against this path. |
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|
469 |
* |
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|
470 |
* <p> If the {@code other} parameter is an {@link #isAbsolute() absolute} |
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|
471 |
* path then this method trivially returns {@code other}. If {@code other} |
8158 | 472 |
* is an <i>empty path</i> then this method trivially returns this path. |
473 |
* Otherwise this method considers this path to be a directory and resolves |
|
474 |
* the given path against this path. In the simplest case, the given path |
|
475 |
* does not have a {@link #getRoot root} component, in which case this method |
|
476 |
* <em>joins</em> the given path to this path and returns a resulting path |
|
477 |
* that {@link #endsWith ends} with the given path. Where the given path has |
|
478 |
* a root component then resolution is highly implementation dependent and |
|
479 |
* therefore unspecified. |
|
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|
480 |
* |
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|
481 |
* @param other |
8158 | 482 |
* the path to resolve against this path |
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|
483 |
* |
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|
484 |
* @return the resulting path |
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|
485 |
* |
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|
486 |
* @see #relativize |
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|
487 |
*/ |
8158 | 488 |
Path resolve(Path other); |
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|
489 |
|
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changeset
|
490 |
/** |
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changeset
|
491 |
* Converts a given path string to a {@code Path} and resolves it against |
3acf8e5e2ca0
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parents:
diff
changeset
|
492 |
* this {@code Path} in exactly the manner specified by the {@link |
8158 | 493 |
* #resolve(Path) resolve} method. For example, suppose that the name |
494 |
* separator is "{@code /}" and a path represents "{@code foo/bar}", then |
|
495 |
* invoking this method with the path string "{@code gus}" will result in |
|
496 |
* the {@code Path} "{@code foo/bar/gus}". |
|
2057
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|
497 |
* |
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|
498 |
* @implSpec |
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diff
changeset
|
499 |
* The default implementation is equivalent for this path to: |
1b52033818b1
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parents:
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diff
changeset
|
500 |
* <pre>{@code |
1b52033818b1
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bpb
parents:
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diff
changeset
|
501 |
* resolve(getFileSystem().getPath(other)); |
1b52033818b1
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parents:
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diff
changeset
|
502 |
* }</pre> |
1b52033818b1
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|
503 |
* |
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|
504 |
* @param other |
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diff
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|
505 |
* the path string to resolve against this path |
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|
506 |
* |
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diff
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|
507 |
* @return the resulting path |
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|
508 |
* |
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|
509 |
* @throws InvalidPathException |
8158 | 510 |
* if the path string cannot be converted to a Path. |
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|
511 |
* |
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|
512 |
* @see FileSystem#getPath |
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|
513 |
*/ |
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|
514 |
default Path resolve(String other) { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
515 |
return resolve(getFileSystem().getPath(other)); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
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diff
changeset
|
516 |
} |
8158 | 517 |
|
518 |
/** |
|
519 |
* Resolves the given path against this path's {@link #getParent parent} |
|
520 |
* path. This is useful where a file name needs to be <i>replaced</i> with |
|
521 |
* another file name. For example, suppose that the name separator is |
|
522 |
* "{@code /}" and a path represents "{@code dir1/dir2/foo}", then invoking |
|
523 |
* this method with the {@code Path} "{@code bar}" will result in the {@code |
|
524 |
* Path} "{@code dir1/dir2/bar}". If this path does not have a parent path, |
|
525 |
* or {@code other} is {@link #isAbsolute() absolute}, then this method |
|
526 |
* returns {@code other}. If {@code other} is an empty path then this method |
|
527 |
* returns this path's parent, or where this path doesn't have a parent, the |
|
528 |
* empty path. |
|
529 |
* |
|
28244
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8030090: (fs) Add default methods to Path for derived methods
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|
530 |
* @implSpec |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
531 |
* The default implementation is equivalent for this path to: |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
532 |
* <pre>{@code |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
533 |
* (getParent() == null) ? other : getParent().resolve(other); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
534 |
* }</pre> |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
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diff
changeset
|
535 |
* unless {@code other == null}, in which case a |
1b52033818b1
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parents:
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diff
changeset
|
536 |
* {@code NullPointerException} is thrown. |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
537 |
* |
8158 | 538 |
* @param other |
539 |
* the path to resolve against this path's parent |
|
540 |
* |
|
541 |
* @return the resulting path |
|
542 |
* |
|
543 |
* @see #resolve(Path) |
|
544 |
*/ |
|
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
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changeset
|
545 |
default Path resolveSibling(Path other) { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
546 |
if (other == null) |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
547 |
throw new NullPointerException(); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
548 |
Path parent = getParent(); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
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diff
changeset
|
549 |
return (parent == null) ? other : parent.resolve(other); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
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diff
changeset
|
550 |
} |
8158 | 551 |
|
552 |
/** |
|
553 |
* Converts a given path string to a {@code Path} and resolves it against |
|
554 |
* this path's {@link #getParent parent} path in exactly the manner |
|
555 |
* specified by the {@link #resolveSibling(Path) resolveSibling} method. |
|
556 |
* |
|
28244
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diff
changeset
|
557 |
* @implSpec |
1b52033818b1
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bpb
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diff
changeset
|
558 |
* The default implementation is equivalent for this path to: |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
559 |
* <pre>{@code |
1b52033818b1
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bpb
parents:
27777
diff
changeset
|
560 |
* resolveSibling(getFileSystem().getPath(other)); |
1b52033818b1
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bpb
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diff
changeset
|
561 |
* }</pre> |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
562 |
* |
8158 | 563 |
* @param other |
564 |
* the path string to resolve against this path's parent |
|
565 |
* |
|
566 |
* @return the resulting path |
|
567 |
* |
|
568 |
* @throws InvalidPathException |
|
569 |
* if the path string cannot be converted to a Path. |
|
570 |
* |
|
571 |
* @see FileSystem#getPath |
|
572 |
*/ |
|
28244
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changeset
|
573 |
default Path resolveSibling(String other) { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
574 |
return resolveSibling(getFileSystem().getPath(other)); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
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changeset
|
575 |
} |
2057
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|
576 |
|
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
577 |
/** |
3acf8e5e2ca0
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parents:
diff
changeset
|
578 |
* Constructs a relative path between this path and a given path. |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
579 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
580 |
* <p> Relativization is the inverse of {@link #resolve(Path) resolution}. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
581 |
* This method attempts to construct a {@link #isAbsolute relative} path |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
582 |
* that when {@link #resolve(Path) resolved} against this path, yields a |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
583 |
* path that locates the same file as the given path. For example, on UNIX, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
584 |
* if this path is {@code "/a/b"} and the given path is {@code "/a/b/c/d"} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
585 |
* then the resulting relative path would be {@code "c/d"}. Where this |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
586 |
* path and the given path do not have a {@link #getRoot root} component, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
587 |
* then a relative path can be constructed. A relative path cannot be |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
588 |
* constructed if only one of the paths have a root component. Where both |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
589 |
* paths have a root component then it is implementation dependent if a |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
590 |
* relative path can be constructed. If this path and the given path are |
8158 | 591 |
* {@link #equals equal} then an <i>empty path</i> is returned. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
592 |
* |
8158 | 593 |
* <p> For any two {@link #normalize normalized} paths <i>p</i> and |
594 |
* <i>q</i>, where <i>q</i> does not have a root component, |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
595 |
* <blockquote> |
32143
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8133459: replace <tt> tags (obsolete in html5) in java.nio docs
avstepan
parents:
29986
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changeset
|
596 |
* <i>p</i>{@code .relativize(}<i>p</i> |
394ab6a6658d
8133459: replace <tt> tags (obsolete in html5) in java.nio docs
avstepan
parents:
29986
diff
changeset
|
597 |
* {@code .resolve(}<i>q</i>{@code )).equals(}<i>q</i>{@code )} |
2057
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
598 |
* </blockquote> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
599 |
* |
3215
c0e689b106bf
6857287: (file) Clarifications for symbolic link related javadoc
martin
parents:
3065
diff
changeset
|
600 |
* <p> When symbolic links are supported, then whether the resulting path, |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
601 |
* when resolved against this path, yields a path that can be used to locate |
8158 | 602 |
* the {@link Files#isSameFile same} file as {@code other} is implementation |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
603 |
* dependent. For example, if this path is {@code "/a/b"} and the given |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
604 |
* path is {@code "/a/x"} then the resulting relative path may be {@code |
3215
c0e689b106bf
6857287: (file) Clarifications for symbolic link related javadoc
martin
parents:
3065
diff
changeset
|
605 |
* "../x"}. If {@code "b"} is a symbolic link then is implementation |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
606 |
* dependent if {@code "a/b/../x"} would locate the same file as {@code "/a/x"}. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
607 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
608 |
* @param other |
4059
e838ac118185
6884480: (file) Path.relativize has typo in parameter description
alanb
parents:
3419
diff
changeset
|
609 |
* the path to relativize against this path |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
610 |
* |
8158 | 611 |
* @return the resulting relative path, or an empty path if both paths are |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
612 |
* equal |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
613 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
614 |
* @throws IllegalArgumentException |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
615 |
* if {@code other} is not a {@code Path} that can be relativized |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
616 |
* against this path |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
617 |
*/ |
8158 | 618 |
Path relativize(Path other); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
619 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
620 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
621 |
* Returns a URI to represent this path. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
622 |
* |
9789
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
623 |
* <p> This method constructs an absolute {@link URI} with a {@link |
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
624 |
* URI#getScheme() scheme} equal to the URI scheme that identifies the |
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
625 |
* provider. The exact form of the scheme specific part is highly provider |
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
626 |
* dependent. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
627 |
* |
9789
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
628 |
* <p> In the case of the default provider, the URI is hierarchical with |
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
629 |
* a {@link URI#getPath() path} component that is absolute. The query and |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
630 |
* fragment components are undefined. Whether the authority component is |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
631 |
* defined or not is implementation dependent. There is no guarantee that |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
632 |
* the {@code URI} may be used to construct a {@link java.io.File java.io.File}. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
633 |
* In particular, if this path represents a Universal Naming Convention (UNC) |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
634 |
* path, then the UNC server name may be encoded in the authority component |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
635 |
* of the resulting URI. In the case of the default provider, and the file |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
636 |
* exists, and it can be determined that the file is a directory, then the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
637 |
* resulting {@code URI} will end with a slash. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
638 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
639 |
* <p> The default provider provides a similar <em>round-trip</em> guarantee |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
640 |
* to the {@link java.io.File} class. For a given {@code Path} <i>p</i> it |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
641 |
* is guaranteed that |
32143
394ab6a6658d
8133459: replace <tt> tags (obsolete in html5) in java.nio docs
avstepan
parents:
29986
diff
changeset
|
642 |
* <blockquote> |
49285
4d2e3f5abb48
8194746: (fs) Add equivalents of Paths.get to Path interface
bpb
parents:
47216
diff
changeset
|
643 |
* {@link Path#of(URI) Path.of}{@code (}<i>p</i>{@code .toUri()).equals(}<i>p</i> |
32143
394ab6a6658d
8133459: replace <tt> tags (obsolete in html5) in java.nio docs
avstepan
parents:
29986
diff
changeset
|
644 |
* {@code .}{@link #toAbsolutePath() toAbsolutePath}{@code ())} |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
645 |
* </blockquote> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
646 |
* so long as the original {@code Path}, the {@code URI}, and the new {@code |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
647 |
* Path} are all created in (possibly different invocations of) the same |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
648 |
* Java virtual machine. Whether other providers make any guarantees is |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
649 |
* provider specific and therefore unspecified. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
650 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
651 |
* <p> When a file system is constructed to access the contents of a file |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
652 |
* as a file system then it is highly implementation specific if the returned |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
653 |
* URI represents the given path in the file system or it represents a |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
654 |
* <em>compound</em> URI that encodes the URI of the enclosing file system. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
655 |
* A format for compound URIs is not defined in this release; such a scheme |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
656 |
* may be added in a future release. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
657 |
* |
9789
49d6dba0d66b
7050358: (fs spec) Path.toUri doesn't allow custom providers to use opaque URIs
alanb
parents:
9679
diff
changeset
|
658 |
* @return the URI representing this path |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
659 |
* |
3065
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
alanb
parents:
2589
diff
changeset
|
660 |
* @throws java.io.IOError |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
661 |
* if an I/O error occurs obtaining the absolute path, or where a |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
662 |
* file system is constructed to access the contents of a file as |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
663 |
* a file system, and the URI of the enclosing file system cannot be |
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
664 |
* obtained |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
665 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
666 |
* @throws SecurityException |
2589 | 667 |
* In the case of the default provider, and a security manager |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
668 |
* is installed, the {@link #toAbsolutePath toAbsolutePath} method |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
669 |
* throws a security exception. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
670 |
*/ |
8158 | 671 |
URI toUri(); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
672 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
673 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
674 |
* Returns a {@code Path} object representing the absolute path of this |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
675 |
* path. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
676 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
677 |
* <p> If this path is already {@link Path#isAbsolute absolute} then this |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
678 |
* method simply returns this path. Otherwise, this method resolves the path |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
679 |
* in an implementation dependent manner, typically by resolving the path |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
680 |
* against a file system default directory. Depending on the implementation, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
681 |
* this method may throw an I/O error if the file system is not accessible. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
682 |
* |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
683 |
* @return a {@code Path} object representing the absolute path |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
684 |
* |
14014 | 685 |
* @throws java.io.IOError |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
686 |
* if an I/O error occurs |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
687 |
* @throws SecurityException |
3065
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
alanb
parents:
2589
diff
changeset
|
688 |
* In the case of the default provider, a security manager |
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
alanb
parents:
2589
diff
changeset
|
689 |
* is installed, and this path is not absolute, then the security |
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
alanb
parents:
2589
diff
changeset
|
690 |
* manager's {@link SecurityManager#checkPropertyAccess(String) |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
691 |
* checkPropertyAccess} method is invoked to check access to the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
692 |
* system property {@code user.dir} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
693 |
*/ |
8158 | 694 |
Path toAbsolutePath(); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
695 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
696 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
697 |
* Returns the <em>real</em> path of an existing file. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
698 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
699 |
* <p> The precise definition of this method is implementation dependent but |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
700 |
* in general it derives from this path, an {@link #isAbsolute absolute} |
8158 | 701 |
* path that locates the {@link Files#isSameFile same} file as this path, but |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
702 |
* with name elements that represent the actual name of the directories |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
703 |
* and the file. For example, where filename comparisons on a file system |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
704 |
* are case insensitive then the name elements represent the names in their |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
705 |
* actual case. Additionally, the resulting path has redundant name |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
706 |
* elements removed. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
707 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
708 |
* <p> If this path is relative then its absolute path is first obtained, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
709 |
* as if by invoking the {@link #toAbsolutePath toAbsolutePath} method. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
710 |
* |
9025
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
711 |
* <p> The {@code options} array may be used to indicate how symbolic links |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
712 |
* are handled. By default, symbolic links are resolved to their final |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
713 |
* target. If the option {@link LinkOption#NOFOLLOW_LINKS NOFOLLOW_LINKS} is |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
714 |
* present then this method does not resolve symbolic links. |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
715 |
* |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
716 |
* Some implementations allow special names such as "{@code ..}" to refer to |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
717 |
* the parent directory. When deriving the <em>real path</em>, and a |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
718 |
* "{@code ..}" (or equivalent) is preceded by a non-"{@code ..}" name then |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
719 |
* an implementation will typically cause both names to be removed. When |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
720 |
* not resolving symbolic links and the preceding name is a symbolic link |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
721 |
* then the names are only removed if it guaranteed that the resulting path |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
722 |
* will locate the same file as this path. |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
723 |
* |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
724 |
* @param options |
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
725 |
* options indicating how symbolic links are handled |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
726 |
* |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
727 |
* @return an absolute path represent the <em>real</em> path of the file |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
728 |
* located by this object |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
729 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
730 |
* @throws IOException |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
731 |
* if the file does not exist or an I/O error occurs |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
732 |
* @throws SecurityException |
2589 | 733 |
* In the case of the default provider, and a security manager |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
734 |
* is installed, its {@link SecurityManager#checkRead(String) checkRead} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
735 |
* method is invoked to check read access to the file, and where |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
736 |
* this path is not absolute, its {@link SecurityManager#checkPropertyAccess(String) |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
737 |
* checkPropertyAccess} method is invoked to check access to the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
738 |
* system property {@code user.dir} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
739 |
*/ |
9025
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
8808
diff
changeset
|
740 |
Path toRealPath(LinkOption... options) throws IOException; |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
741 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
742 |
/** |
8158 | 743 |
* Returns a {@link File} object representing this path. Where this {@code |
744 |
* Path} is associated with the default provider, then this method is |
|
745 |
* equivalent to returning a {@code File} object constructed with the |
|
746 |
* {@code String} representation of this path. |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
747 |
* |
8158 | 748 |
* <p> If this path was created by invoking the {@code File} {@link |
749 |
* File#toPath toPath} method then there is no guarantee that the {@code |
|
750 |
* File} object returned by this method is {@link #equals equal} to the |
|
751 |
* original {@code File}. |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
752 |
* |
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
753 |
* @implSpec |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
754 |
* The default implementation is equivalent for this path to: |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
755 |
* <pre>{@code |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
756 |
* new File(toString()); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
757 |
* }</pre> |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
758 |
* if the {@code FileSystem} which created this {@code Path} is the default |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
759 |
* file system; otherwise an {@code UnsupportedOperationException} is |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
760 |
* thrown. |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
761 |
* |
8158 | 762 |
* @return a {@code File} object representing this path |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
763 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
764 |
* @throws UnsupportedOperationException |
8158 | 765 |
* if this {@code Path} is not associated with the default provider |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
766 |
*/ |
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
767 |
default File toFile() { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
768 |
if (getFileSystem() == FileSystems.getDefault()) { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
769 |
return new File(toString()); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
770 |
} else { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
771 |
throw new UnsupportedOperationException("Path not associated with " |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
772 |
+ "default file system."); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
773 |
} |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
774 |
} |
3065
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
alanb
parents:
2589
diff
changeset
|
775 |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
776 |
// -- watchable -- |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
777 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
778 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
779 |
* Registers the file located by this path with a watch service. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
780 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
781 |
* <p> In this release, this path locates a directory that exists. The |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
782 |
* directory is registered with the watch service so that entries in the |
8158 | 783 |
* directory can be watched. The {@code events} parameter is the events to |
784 |
* register and may contain the following events: |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
785 |
* <ul> |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9676
diff
changeset
|
786 |
* <li>{@link StandardWatchEventKinds#ENTRY_CREATE ENTRY_CREATE} - |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
787 |
* entry created or moved into the directory</li> |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9676
diff
changeset
|
788 |
* <li>{@link StandardWatchEventKinds#ENTRY_DELETE ENTRY_DELETE} - |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
789 |
* entry deleted or moved out of the directory</li> |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9676
diff
changeset
|
790 |
* <li>{@link StandardWatchEventKinds#ENTRY_MODIFY ENTRY_MODIFY} - |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
791 |
* entry in directory was modified</li> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
792 |
* </ul> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
793 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
794 |
* <p> The {@link WatchEvent#context context} for these events is the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
795 |
* relative path between the directory located by this path, and the path |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
796 |
* that locates the directory entry that is created, deleted, or modified. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
797 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
798 |
* <p> The set of events may include additional implementation specific |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9676
diff
changeset
|
799 |
* event that are not defined by the enum {@link StandardWatchEventKinds} |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
800 |
* |
8158 | 801 |
* <p> The {@code modifiers} parameter specifies <em>modifiers</em> that |
802 |
* qualify how the directory is registered. This release does not define any |
|
803 |
* <em>standard</em> modifiers. It may contain implementation specific |
|
804 |
* modifiers. |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
805 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
806 |
* <p> Where a file is registered with a watch service by means of a symbolic |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
807 |
* link then it is implementation specific if the watch continues to depend |
3215
c0e689b106bf
6857287: (file) Clarifications for symbolic link related javadoc
martin
parents:
3065
diff
changeset
|
808 |
* on the existence of the symbolic link after it is registered. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
809 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
810 |
* @param watcher |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
811 |
* the watch service to which this object is to be registered |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
812 |
* @param events |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
813 |
* the events for which this object should be registered |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
814 |
* @param modifiers |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
815 |
* the modifiers, if any, that modify how the object is registered |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
816 |
* |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
817 |
* @return a key representing the registration of this object with the |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
818 |
* given watch service |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
819 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
820 |
* @throws UnsupportedOperationException |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
821 |
* if unsupported events or modifiers are specified |
2057
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parents:
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changeset
|
822 |
* @throws IllegalArgumentException |
2072
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alanb
parents:
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changeset
|
823 |
* if an invalid combination of events or modifiers is specified |
2057
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
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changeset
|
824 |
* @throws ClosedWatchServiceException |
2072
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alanb
parents:
2057
diff
changeset
|
825 |
* if the watch service is closed |
2057
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alanb
parents:
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changeset
|
826 |
* @throws NotDirectoryException |
2072
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alanb
parents:
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diff
changeset
|
827 |
* if the file is registered to watch the entries in a directory |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
828 |
* and the file is not a directory <i>(optional specific exception)</i> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
829 |
* @throws IOException |
2072
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6809132: (file) Javadoc style and consistency issues
alanb
parents:
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changeset
|
830 |
* if an I/O error occurs |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
831 |
* @throws SecurityException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
832 |
* In the case of the default provider, and a security manager is |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
833 |
* installed, the {@link SecurityManager#checkRead(String) checkRead} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
834 |
* method is invoked to check read access to the file. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
835 |
*/ |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
836 |
@Override |
8158 | 837 |
WatchKey register(WatchService watcher, |
838 |
WatchEvent.Kind<?>[] events, |
|
839 |
WatchEvent.Modifier... modifiers) |
|
2057
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
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|
840 |
throws IOException; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
841 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
842 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
843 |
* Registers the file located by this path with a watch service. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
844 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
845 |
* <p> An invocation of this method behaves in exactly the same way as the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
846 |
* invocation |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
847 |
* <pre> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
848 |
* watchable.{@link #register(WatchService,WatchEvent.Kind[],WatchEvent.Modifier[]) register}(watcher, events, new WatchEvent.Modifier[0]); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
849 |
* </pre> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
850 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
851 |
* <p> <b>Usage Example:</b> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
852 |
* Suppose we wish to register a directory for entry create, delete, and modify |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
853 |
* events: |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
854 |
* <pre> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
855 |
* Path dir = ... |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
856 |
* WatchService watcher = ... |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
857 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
858 |
* WatchKey key = dir.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
859 |
* </pre> |
28244
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bpb
parents:
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diff
changeset
|
860 |
* |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
861 |
* @implSpec |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
862 |
* The default implementation is equivalent for this path to: |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
863 |
* <pre>{@code |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
864 |
* register(watcher, events, new WatchEvent.Modifier[0]); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
865 |
* }</pre> |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
866 |
* |
2057
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alanb
parents:
diff
changeset
|
867 |
* @param watcher |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
868 |
* The watch service to which this object is to be registered |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
869 |
* @param events |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
870 |
* The events for which this object should be registered |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
871 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
872 |
* @return A key representing the registration of this object with the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
873 |
* given watch service |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
874 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
875 |
* @throws UnsupportedOperationException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
876 |
* If unsupported events are specified |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
877 |
* @throws IllegalArgumentException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
878 |
* If an invalid combination of events is specified |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
879 |
* @throws ClosedWatchServiceException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
880 |
* If the watch service is closed |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
881 |
* @throws NotDirectoryException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
882 |
* If the file is registered to watch the entries in a directory |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
883 |
* and the file is not a directory <i>(optional specific exception)</i> |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
884 |
* @throws IOException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
885 |
* If an I/O error occurs |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
886 |
* @throws SecurityException |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
887 |
* In the case of the default provider, and a security manager is |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
888 |
* installed, the {@link SecurityManager#checkRead(String) checkRead} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
889 |
* method is invoked to check read access to the file. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
890 |
*/ |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
891 |
@Override |
28244
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8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
892 |
default WatchKey register(WatchService watcher, |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
893 |
WatchEvent.Kind<?>... events) throws IOException { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
894 |
return register(watcher, events, new WatchEvent.Modifier[0]); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
895 |
} |
2057
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alanb
parents:
diff
changeset
|
896 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
897 |
// -- Iterable -- |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
898 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
899 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
900 |
* Returns an iterator over the name elements of this path. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
901 |
* |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
902 |
* <p> The first element returned by the iterator represents the name |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
903 |
* element that is closest to the root in the directory hierarchy, the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
904 |
* second element is the next closest, and so on. The last element returned |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
905 |
* is the name of the file or directory denoted by this path. The {@link |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
906 |
* #getRoot root} component, if present, is not returned by the iterator. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
907 |
* |
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
908 |
* @implSpec |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
909 |
* The default implementation returns an {@code Iterator<Path>} which, for |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
910 |
* this path, traverses the {@code Path}s returned by |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
911 |
* {@code getName(index)}, where {@code index} ranges from zero to |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
912 |
* {@code getNameCount() - 1}, inclusive. |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
913 |
* |
2072
80dfe4469bbd
6809132: (file) Javadoc style and consistency issues
alanb
parents:
2057
diff
changeset
|
914 |
* @return an iterator over the name elements of this path. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
915 |
*/ |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
916 |
@Override |
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
917 |
default Iterator<Path> iterator() { |
29986
97167d851fc4
8078467: Update core libraries to use diamond with anonymous classes
darcy
parents:
28244
diff
changeset
|
918 |
return new Iterator<>() { |
28244
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
919 |
private int i = 0; |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
920 |
|
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
921 |
@Override |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
922 |
public boolean hasNext() { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
923 |
return (i < getNameCount()); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
924 |
} |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
925 |
|
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
926 |
@Override |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
927 |
public Path next() { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
928 |
if (i < getNameCount()) { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
929 |
Path result = getName(i); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
930 |
i++; |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
931 |
return result; |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
932 |
} else { |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
933 |
throw new NoSuchElementException(); |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
934 |
} |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
935 |
} |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
936 |
}; |
1b52033818b1
8030090: (fs) Add default methods to Path for derived methods
bpb
parents:
27777
diff
changeset
|
937 |
} |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
938 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
939 |
// -- compareTo/equals/hashCode -- |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
940 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
941 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
942 |
* Compares two abstract paths lexicographically. The ordering defined by |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
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|
943 |
* this method is provider specific, and in the case of the default |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
944 |
* provider, platform specific. This method does not access the file system |
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|
945 |
* and neither file is required to exist. |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
946 |
* |
8808 | 947 |
* <p> This method may not be used to compare paths that are associated |
948 |
* with different file system providers. |
|
949 |
* |
|
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950 |
* @param other the path compared to this path. |
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951 |
* |
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952 |
* @return zero if the argument is {@link #equals equal} to this path, a |
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953 |
* value less than zero if this path is lexicographically less than |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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954 |
* the argument, or a value greater than zero if this path is |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
955 |
* lexicographically greater than the argument |
8808 | 956 |
* |
957 |
* @throws ClassCastException |
|
958 |
* if the paths are associated with different providers |
|
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959 |
*/ |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
960 |
@Override |
8158 | 961 |
int compareTo(Path other); |
3065
452aaa2899fc
6838333: New I/O: Update file system API to jsr203/nio2-b101
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2589
diff
changeset
|
962 |
|
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|
963 |
/** |
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|
964 |
* Tests this path for equality with the given object. |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
965 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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changeset
|
966 |
* <p> If the given object is not a Path, or is a Path associated with a |
8808 | 967 |
* different {@code FileSystem}, then this method returns {@code false}. |
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|
968 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
969 |
* <p> Whether or not two path are equal depends on the file system |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
970 |
* implementation. In some cases the paths are compared without regard |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
971 |
* to case, and others are case sensitive. This method does not access the |
8158 | 972 |
* file system and the file is not required to exist. Where required, the |
973 |
* {@link Files#isSameFile isSameFile} method may be used to check if two |
|
974 |
* paths locate the same file. |
|
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|
975 |
* |
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|
976 |
* <p> This method satisfies the general contract of the {@link |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
977 |
* java.lang.Object#equals(Object) Object.equals} method. </p> |
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|
978 |
* |
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|
979 |
* @param other |
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|
980 |
* the object to which this object is to be compared |
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|
981 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
982 |
* @return {@code true} if, and only if, the given object is a {@code Path} |
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|
983 |
* that is identical to this {@code Path} |
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|
984 |
*/ |
8158 | 985 |
boolean equals(Object other); |
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|
986 |
|
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
987 |
/** |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
988 |
* Computes a hash code for this path. |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
989 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
990 |
* <p> The hash code is based upon the components of the path, and |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
991 |
* satisfies the general contract of the {@link Object#hashCode |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
992 |
* Object.hashCode} method. |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
993 |
* |
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|
994 |
* @return the hash-code value for this path |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
995 |
*/ |
8158 | 996 |
int hashCode(); |
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|
997 |
|
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
998 |
/** |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
999 |
* Returns the string representation of this path. |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
1000 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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changeset
|
1001 |
* <p> If this path was created by converting a path string using the |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
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changeset
|
1002 |
* {@link FileSystem#getPath getPath} method then the path string returned |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
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|
1003 |
* by this method may differ from the original String used to create the path. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
1004 |
* |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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changeset
|
1005 |
* <p> The returned path string uses the default name {@link |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
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changeset
|
1006 |
* FileSystem#getSeparator separator} to separate names in the path. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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|
1007 |
* |
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|
1008 |
* @return the string representation of this path |
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|
1009 |
*/ |
8158 | 1010 |
String toString(); |
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|
1011 |
} |