author | mkos |
Sun, 30 Dec 2012 00:00:00 +0100 | |
changeset 22678 | ac1ea46be942 |
parent 12009 | 4abb694f273a |
child 23959 | f37ffa18553c |
permissions | -rw-r--r-- |
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/* |
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8029237: Update copyright year to match last edit in jaxws repository for 2012
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* Copyright (c) 1997, 2012, 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 javax.activation; |
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/** |
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* The CommandMap class provides an interface to a registry of |
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* command objects available in the system. |
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* Developers are expected to either use the CommandMap |
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* implementation included with this package (MailcapCommandMap) or |
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* develop their own. Note that some of the methods in this class are |
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* abstract. |
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* |
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* @since 1.6 |
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*/ |
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public abstract class CommandMap { |
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private static CommandMap defaultCommandMap = null; |
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/** |
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* Get the default CommandMap. |
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* <p> |
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* |
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* <ul> |
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* <li> In cases where a CommandMap instance has been previously set |
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* to some value (via <i>setDefaultCommandMap</i>) |
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* return the CommandMap. |
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* <li> |
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* In cases where no CommandMap has been set, the CommandMap |
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* creates an instance of <code>MailcapCommandMap</code> and |
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* set that to the default, returning its value. |
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* |
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* </ul> |
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* |
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* @return the CommandMap |
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*/ |
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public static CommandMap getDefaultCommandMap() { |
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if (defaultCommandMap == null) |
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defaultCommandMap = new MailcapCommandMap(); |
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return defaultCommandMap; |
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} |
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/** |
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* Set the default CommandMap. Reset the CommandMap to the default by |
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* calling this method with <code>null</code>. |
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* |
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* @param commandMap The new default CommandMap. |
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* @exception SecurityException if the caller doesn't have permission |
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* to change the default |
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*/ |
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public static void setDefaultCommandMap(CommandMap commandMap) { |
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SecurityManager security = System.getSecurityManager(); |
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if (security != null) { |
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try { |
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// if it's ok with the SecurityManager, it's ok with me... |
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security.checkSetFactory(); |
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} catch (SecurityException ex) { |
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// otherwise, we also allow it if this code and the |
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// factory come from the same class loader (e.g., |
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// the JAF classes were loaded with the applet classes). |
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if (CommandMap.class.getClassLoader() != |
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commandMap.getClass().getClassLoader()) |
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throw ex; |
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} |
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} |
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defaultCommandMap = commandMap; |
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} |
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/** |
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* Get the preferred command list from a MIME Type. The actual semantics |
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* are determined by the implementation of the CommandMap. |
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* |
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* @param mimeType the MIME type |
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* @return the CommandInfo classes that represent the command Beans. |
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*/ |
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abstract public CommandInfo[] getPreferredCommands(String mimeType); |
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/** |
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* Get the preferred command list from a MIME Type. The actual semantics |
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* are determined by the implementation of the CommandMap. <p> |
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* |
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* The <code>DataSource</code> provides extra information, such as |
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* the file name, that a CommandMap implementation may use to further |
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* refine the list of commands that are returned. The implementation |
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* in this class simply calls the <code>getPreferredCommands</code> |
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* method that ignores this argument. |
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* |
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* @param mimeType the MIME type |
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* @param ds a DataSource for the data |
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* @return the CommandInfo classes that represent the command Beans. |
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* @since JAF 1.1 |
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*/ |
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public CommandInfo[] getPreferredCommands(String mimeType, DataSource ds) { |
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return getPreferredCommands(mimeType); |
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} |
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/** |
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* Get all the available commands for this type. This method |
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* should return all the possible commands for this MIME type. |
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* |
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* @param mimeType the MIME type |
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* @return the CommandInfo objects representing all the commands. |
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*/ |
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abstract public CommandInfo[] getAllCommands(String mimeType); |
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/** |
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* Get all the available commands for this type. This method |
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* should return all the possible commands for this MIME type. <p> |
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* |
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* The <code>DataSource</code> provides extra information, such as |
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* the file name, that a CommandMap implementation may use to further |
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* refine the list of commands that are returned. The implementation |
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* in this class simply calls the <code>getAllCommands</code> |
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* method that ignores this argument. |
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* |
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* @param mimeType the MIME type |
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* @param ds a DataSource for the data |
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* @return the CommandInfo objects representing all the commands. |
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* @since JAF 1.1 |
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*/ |
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public CommandInfo[] getAllCommands(String mimeType, DataSource ds) { |
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return getAllCommands(mimeType); |
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} |
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/** |
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* Get the default command corresponding to the MIME type. |
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* |
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* @param mimeType the MIME type |
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* @param cmdName the command name |
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* @return the CommandInfo corresponding to the command. |
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*/ |
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abstract public CommandInfo getCommand(String mimeType, String cmdName); |
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/** |
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* Get the default command corresponding to the MIME type. <p> |
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* |
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* The <code>DataSource</code> provides extra information, such as |
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* the file name, that a CommandMap implementation may use to further |
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* refine the command that is chosen. The implementation |
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* in this class simply calls the <code>getCommand</code> |
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* method that ignores this argument. |
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* |
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* @param mimeType the MIME type |
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* @param cmdName the command name |
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* @param ds a DataSource for the data |
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* @return the CommandInfo corresponding to the command. |
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* @since JAF 1.1 |
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*/ |
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public CommandInfo getCommand(String mimeType, String cmdName, |
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DataSource ds) { |
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return getCommand(mimeType, cmdName); |
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} |
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/** |
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* Locate a DataContentHandler that corresponds to the MIME type. |
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* The mechanism and semantics for determining this are determined |
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* by the implementation of the particular CommandMap. |
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* |
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* @param mimeType the MIME type |
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* @return the DataContentHandler for the MIME type |
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*/ |
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abstract public DataContentHandler createDataContentHandler(String |
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mimeType); |
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/** |
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* Locate a DataContentHandler that corresponds to the MIME type. |
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* The mechanism and semantics for determining this are determined |
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* by the implementation of the particular CommandMap. <p> |
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* |
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* The <code>DataSource</code> provides extra information, such as |
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* the file name, that a CommandMap implementation may use to further |
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* refine the choice of DataContentHandler. The implementation |
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* in this class simply calls the <code>createDataContentHandler</code> |
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* method that ignores this argument. |
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* |
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* @param mimeType the MIME type |
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* @param ds a DataSource for the data |
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* @return the DataContentHandler for the MIME type |
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* @since JAF 1.1 |
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*/ |
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public DataContentHandler createDataContentHandler(String mimeType, |
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DataSource ds) { |
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return createDataContentHandler(mimeType); |
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} |
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/** |
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* Get all the MIME types known to this command map. |
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* If the command map doesn't support this operation, |
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* null is returned. |
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* |
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* @return array of MIME types as strings, or null if not supported |
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* @since JAF 1.1 |
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*/ |
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public String[] getMimeTypes() { |
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return null; |
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} |
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} |