src/java.sql.rowset/share/classes/javax/sql/rowset/package-info.java
changeset 50444 db65921e9a9b
parent 47216 71c04702a3d5
child 54057 687e10fefa11
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.sql.rowset/share/classes/javax/sql/rowset/package-info.java	Thu Jun 07 06:27:09 2018 -0400
@@ -0,0 +1,286 @@
+/*
+ * Copyright (c)  2017, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Standard interfaces and base classes for JDBC <code>RowSet</code>
+ * implementations. This package contains interfaces and classes
+ * that a standard <code>RowSet</code> implementation either implements or extends.
+ *
+ * <h2>Table of Contents</h2>
+ * <ul>
+ * <li><a href="#pkgspec">1.0 Package Specification</a>
+ * <li><a href="#stdrowset">2.0 Standard RowSet Definitions</a>
+ * <li><a href="#impl">3.0 Implementer's Guide</a>
+ * <li><a href="#relspec">4.0 Related Specifications</a>
+ * <li><a href="#reldocs">5.0 Related Documentation</a>
+ * </ul>
+ *
+ * <h3><a id="pkgspec">1.0 Package Specification</a></h3>
+ * This package specifies five standard JDBC <code>RowSet</code> interfaces.
+ * All five extend the
+ * <a href="{@docRoot}/java.sql/javax/sql/RowSet.html">RowSet</a> interface described in the JDBC 3.0
+ * specification.  It is anticipated that additional definitions
+ * of more specialized JDBC <code>RowSet</code> types will emerge as this technology
+ * matures. Future definitions <i>should</i> be specified as subinterfaces using
+ * inheritance similar to the way it is used in this specification.
+ * <p>
+ * <i>Note:</i> The interface definitions provided in this package form the basis for
+ * all compliant JDBC <code>RowSet</code> implementations. Vendors and more advanced
+ * developers who intend to provide their own compliant <code>RowSet</code> implementations
+ * should pay particular attention to the assertions detailed in specification
+ * interfaces.
+ *
+ * <h3><a id="stdrowset">2.0 Standard RowSet Definitions</a></h3>
+ * <ul>
+ * <li><a href="JdbcRowSet.html"><b><code>JdbcRowSet</code></b></a> - A wrapper around
+ * a <code>ResultSet</code> object that makes it possible to use the result set as a
+ * JavaBeans&trade; component. Thus,
+ * a <code>JdbcRowSet</code> object can be a Bean that any tool
+ * makes available for assembling an application as part of a component based
+ * architecture. A <code>JdbcRowSet</code> object is a connected <code>RowSet</code>
+ * object, that is, it
+ * <b>must</b> continually maintain its connection to its data source using a JDBC
+ * technology-enabled driver ("JDBC driver"). In addition, a <code>JdbcRowSet</code>
+ * object provides a fully updatable and scrollable tabular
+ * data structure as defined in the JDBC 3.0 specification.
+ *
+ * <li><a href="CachedRowSet.html">
+ * <b><code>CachedRowSet</code>&trade;</b></a>
+ *  - A <code>CachedRowSet</code> object is a JavaBeans&trade;
+ * component that is scrollable, updatable, serializable, and generally disconnected from
+ * the source of its data. A <code>CachedRowSet</code> object
+ * typically contains rows from a result set, but it can also contain rows from any
+ * file with a tabular format, such as a spreadsheet. <code>CachedRowSet</code> implementations
+ * <b>must</b> use the <code>SyncFactory</code> to manage and obtain pluggable
+ * <code>SyncProvider</code> objects to provide synchronization between the
+ * disconnected <code>RowSet</code> object and the originating data source.
+ * Typically a <code>SyncProvider</code> implementation relies upon a JDBC
+ * driver to obtain connectivity to a particular data source.
+ * Further details on this mechanism are discussed in the <a
+ * href="spi/package-summary.html"><code>javax.sql.rowset.spi</code></a> package
+ * specification.
+ *
+ * <li><a href="WebRowSet.html"><b><code>WebRowSet</code></b></a> - A
+ * <code>WebRowSet</code> object is an extension of <code>CachedRowSet</code>
+ * that can read and write a <code>RowSet</code> object in a well formed XML format.
+ * This class calls an <a href="spi/XmlReader.html"><code>XmlReader</code></a> object
+ * (an extension of the <a href="{@docRoot}/java.sql/javax/sql/RowSetReader.html"><code>RowSetReader</code></a>
+ * interface) to read a rowset in XML format. It calls an
+ * <a href="spi/XmlWriter.html"><code>XmlWriter</code></a> object (an extension of the
+ * <a href="{@docRoot}/java.sql/javax/sql/RowSetWriter.html"><code>RowSetWriter</code></a> interface)
+ * to write a rowset in XML format. The reader and writer required by
+ * <code>WebRowSet</code> objects are provided by the
+ * <code>SyncFactory</code> in the form of <code>SyncProvider</code>
+ * implementations. In order to ensure well formed XML usage, a standard generic XML
+ * Schema is defined and published at
+ * <a href="http://java.sun.com/xml/ns/jdbc/webrowset.xsd">
+ * <code>http://java.sun.com/xml/ns/jdbc/webrowset.xsd</code></a>.
+ *
+ * <li><a href="FilteredRowSet.html"><b><code>FilteredRowSet</code></b></a> - A
+ * <code>FilteredRowSet</code> object provides filtering functionality in a programmatic
+ * and extensible way. There are many instances when a <code>RowSet</code> <code>object</code>
+ * has a need to provide filtering in its contents without sacrificing the disconnected
+ * environment, thus saving the expense of having to create a connection to the data source.
+ * Solutions to this need vary from providing heavyweight full scale
+ * SQL query abilities, to portable components, to more lightweight
+ * approaches. A <code>FilteredRowSet</code> object consumes
+ * an implementation of the <a href="Predicate.html"><code>Predicate</code></a>
+ * interface, which <b>may</b> define a filter at run time. In turn, a
+ * <code>FilteredRowSet</code> object is tasked with enforcing the set filter for both
+ * inbound and outbound read and write operations. That is, all filters can be
+ * considered as bi-directional. No standard filters are defined;
+ * however, sufficient mechanics are specified to permit any required filter to be
+ * implemented.
+ *
+ * <li><a href="JoinRowSet.html"><b><code>JoinRowSet</code></b></a> - The <code>JoinRowSet</code>
+ * interface  describes a mechanism by which relationships can be established between
+ * two or more standard <code>RowSet</code> implementations. Any number of <code>RowSet</code>
+ * objects can be added to a <code>JoinRowSet</code> object provided  the <code>RowSet</code>objects
+ * can be related  in a SQL <code>JOIN</code> like fashion. By definition, the SQL <code>JOIN</code>
+ * statement  is used to combine the data contained in two (<i>or more</i>) relational
+ * database tables based upon a common attribute. By establishing and then enforcing
+ * column matches, a <code>JoinRowSet</code> object establishes relationships between
+ * <code>RowSet</code> instances without the need to touch the originating data source.
+ * </ul>
+ *
+ * <h3><a id="impl">3.0 Implementer's Guide</a></h3>
+ * Compliant implementations of JDBC <code>RowSet</code> Implementations
+ * <b>must</b> follow the assertions described in this specification. In accordance
+ * with the terms of the <a href="http://www.jcp.org">Java Community Process</a>, a
+ * Test Compatibility Kit (TCK) can be licensed to ensure compatibility with the
+ * specification. The following paragraphs outline a number of starting points for
+ * implementers of the standard JDBC <code>RowSet</code> definitions. Implementers
+ * should also consult the <i>Implementer's Guide</i> in the <a
+ * href="spi/package-summary.html">javax.sql.rowset.spi</a> package for guidelines
+ * on <a href="spi/SyncProvider.html"><code>SyncProvider</code></a> implementations.
+ *
+ * <ul>
+ * <li><b>3.1 Constructor</b>
+ * <p>
+ *   All <code>RowSet</code> implementations <strong>must</strong> provide a
+ * no-argument constructor.
+ * </li>
+ * <li><b>3.2 Role of the <code>BaseRowSet</code> Class</b>
+ * <p>
+ * A compliant JDBC <code>RowSet</code> implementation <b>must</b> implement one or more
+ * standard interfaces specified in this package and <b>may</b> extend the
+ * <a href="BaseRowSet.html"><code>BaseRowSet</code></a> abstract class. For example, a
+ * <code>CachedRowSet</code> implementation must implement the <code>CachedRowSet</code>
+ * interface and extend the <code>BaseRowSet</code> abstract class. The
+ * <code>BaseRowSet</code> class provides the standard architecture on which all
+ * <code>RowSet</code> implementations should be built, regardless of whether the
+ * <code>RowSet</code> objects exist in a connected or disconnected environment.
+ * The <code>BaseRowSet</code> abstract class provides any <code>RowSet</code> implementation
+ * with its base functionality, including property manipulation and event notification
+ * that is fully compliant with <a href="http://java.sun.com/products/javabeans">JavaBeans</a>
+ * component requirements. As an example, all implementations provided in the
+ * reference implementations (contained in the <code>com.sun.rowset</code> package) use
+ * the <code>BaseRowSet</code> class as a basis for their implementations.
+ * <P>
+ * The following table illustrates the features that the <code>BaseRowSet</code>
+ * abstract class provides.
+ * <blockquote>
+ *   <table class="striped" style="vertical-align:top; width:75%">
+ *     <caption>Features in <code>BaseRowSet</code></caption>
+ *         <thead>
+ *           <tr>
+ *             <th scope="col">Feature</th>
+ *             <th scope="col">Details</th>
+ *           </tr>
+ *         </thead>
+ *         <tbody>
+ *           <tr>
+ *             <th scope="row">Properties</th>
+ *             <td>Provides standard JavaBeans property manipulation
+ * mechanisms to allow applications to get and set <code>RowSet</code> command and
+ * property  values. Refer to the   documentation of the <code>javax.sql.RowSet</code>
+ * interface  (available in the JDBC 3.0 specification) for more details on
+ * the standard  <code>RowSet</code> properties.</td>
+ *           </tr>
+ *           <tr>
+ *             <th scope="row">Event notification</th>
+ *             <td>Provides standard JavaBeans event notifications
+ * to registered event listeners. Refer to the documentation of <code>javax.sql.RowSetEvent</code>
+ * interface (available in the JDBC 3.0 specification) for
+ * more details on how  to register and handle standard RowSet events generated
+ * by  compliant implementations.</td>
+ *           </tr>
+ *           <tr>
+ *             <th scope="row">Setters for a RowSet object's command</th>
+ *             <td>Provides a complete set of setter methods
+ *                for setting RowSet command parameters.</td>
+ *           </tr>
+ *           <tr>
+ *             <th scope="row">Streams</th>
+ *             <td>Provides fields for storing of stream instances
+ * in addition to providing a set of constants for stream type designation.</td>
+ *           </tr>
+ *     </tbody>
+ *   </table>
+ *   </blockquote>
+ *
+ * <li><b>3.3 Connected RowSet Requirements</b>
+ * <p>
+ * The <code>JdbcRowSet</code> describes a <code>RowSet</code> object that <b>must</b> always
+ * be connected to the originating data source. Implementations of the <code>JdbcRowSet</code>
+ * should ensure that this connection is provided solely by a JDBC driver.
+ * Furthermore, <code>RowSet</code> objects that are implementations of the
+ * <code>JdbcRowSet</code> interface and are therefore operating in a connected environment
+ * do not use the <code>SyncFactory</code> to obtain a <code>RowSetReader</code> object
+ * or a <code>RowSetWriter</code> object. They can safely rely on the JDBC driver to
+ * supply their needs by virtue of the presence of an underlying updatable and scrollable
+ * <code>ResultSet</code> implementation.
+ *
+ * <li>
+ * <b>3.4 Disconnected RowSet Requirements</b>
+ * <p>
+ * A disconnected <code>RowSet</code> object, such as a <code>CachedRowSet</code> object,
+ * <b>should</b> delegate
+ * connection management to a <code>SyncProvider</code> object provided by the
+ * <code>SyncFactory</code>. To ensure fully disconnected semantics, all
+ * disconnected <code>RowSet</code> objects <b>must</b> ensure
+ * that the original connection made to the data source to populate the <code>RowSet</code>
+ * object is closed to permit the garbage collector to recover and release resources. The
+ * <code>SyncProvider</code> object ensures that the critical JDBC properties are
+ * maintained in order to re-establish a connection to the data source when a
+ * synchronization is required. A disconnected <code>RowSet</code> object should
+ * therefore ensure that no
+ * extraneous references remain on the <code>Connection</code> object.
+ *
+ * <li><b>3.5 Role of RowSetMetaDataImpl</b>
+ * <p>
+ * The <code>RowsetMetaDataImpl</code> class is a utility class that provides an implementation of the
+ * <a href="{@docRoot}/java.sql/javax/sql/RowSetMetaData.html">RowSetMetaData</a> interface, supplying standard setter
+ * method implementations for metadata for both connected and disconnected
+ * <code>RowSet</code> objects. All implementations are free to use this standard
+ * implementation but are not required to do so.
+ *
+ * <li><b>3.6 RowSetWarning Class</b>
+ * <p>
+ * The <code>RowSetWarning</code> class provides warnings that can be set
+ * on <code>RowSet</code> implementations.
+ * Similar to <a href="{@docRoot}/java.sql/java/sql/SQLWarning.html">SQLWarning</a> objects,
+ * <code>RowSetWarning</code>  objects are silently chained to the object whose method
+ * caused the warning to be thrown. All <code>RowSet</code> implementations <b>should</b>
+ * ensure that this chaining occurs if a warning is generated and also ensure that the
+ * warnings are available via the <code>getRowSetWarnings</code> method defined in either
+ * the <code>JdbcRowSet</code> interface or the <code>CachedRowSet</code> interface.
+ * After a warning has been retrieved with one of the
+ * <code>getRowSetWarnings</code> methods, the <code>RowSetWarning</code> method
+ * <code>getNextWarning</code> can be called on it to retrieve any warnings that might
+ * be chained on it.  If a warning is returned, <code>getNextWarning</code> can be called
+ * on it, and so on until there are no more warnings.
+ *
+ * <li><b>3.7 The Joinable Interface</b>
+ * <P>
+ * The <code>Joinable</code> interface provides both connected and disconnected
+ * <code>RowSet</code> objects with the capability to be added to a
+ * <code>JoinRowSet</code> object in an SQL <code>JOIN</code> operation.
+ * A <code>RowSet</code> object that has  implemented the <code>Joinable</code>
+ * interface can set a match column, retrieve a match column, or unset a match column.
+ * A <code>JoinRowSet</code> object can then use the <code>RowSet</code> object's
+ * match column as a basis for adding the <code>RowSet</code> object.
+ * </li>
+ *
+ * <li><b>3.8 The RowSetFactory Interface</b>
+ *   <p>
+ *       A <code>RowSetFactory</code> implementation <strong>must</strong>
+ *       be provided.
+ * </li>
+ * </ul>
+ *
+ * <h3><a id="relspec">4.0 Related Specifications</a></h3>
+ * <ul>
+ * <li><a href="https://jcp.org/en/jsr/detail?id=221">JDBC 4.3 Specification</a>
+ * <li><a href="http://www.w3.org/XML/Schema">XML Schema</a>
+ * </ul>
+ *
+ * <h3><a id="reldocs">5.0 Related Documentation</a></h3>
+ * <ul>
+ * <li><a href="http://docs.oracle.com/javase/tutorial/jdbc/basics/rowset.html">
+ * JDBC RowSet Tutorial</a>
+ *</ul>
+ */
+package javax.sql.rowset;