246 lines
8.4 KiB
Java
246 lines
8.4 KiB
Java
/*
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* Copyright (c) 1997, 2011, 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 com.sun.tools.internal.xjc;
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import java.io.IOException;
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import java.util.Collections;
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import java.util.List;
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import com.sun.tools.internal.xjc.generator.bean.field.FieldRendererFactory;
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import com.sun.tools.internal.xjc.model.CPluginCustomization;
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import com.sun.tools.internal.xjc.model.Model;
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import com.sun.tools.internal.xjc.outline.Outline;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.SAXException;
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/**
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* Add-on that works on the generated source code.
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*
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* <p>
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* This add-on will be called after the default bean generation
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* has finished.
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*
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* @author
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* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
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*
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* @since
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* JAXB RI 2.0 EA
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*/
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public abstract class Plugin {
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/**
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* Gets the option name to turn on this add-on.
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*
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* <p>
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* For example, if "abc" is returned, "-abc" will
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* turn on this plugin. A plugin needs to be turned
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* on explicitly, or else no other methods of {@link Plugin}
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* will be invoked.
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*
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* <p>
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* Starting 2.1, when an option matches the name returned
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* from this method, XJC will then invoke {@link #parseArgument(Options, String[], int)},
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* allowing plugins to handle arguments to this option.
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*/
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public abstract String getOptionName();
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/**
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* Gets the description of this add-on. Used to generate
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* a usage screen.
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*
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* @return
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* localized description message. should be terminated by \n.
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*/
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public abstract String getUsage();
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/**
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* Parses an option <code>args[i]</code> and augment
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* the <code>opt</code> object appropriately, then return
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* the number of tokens consumed.
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*
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* <p>
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* The callee doesn't need to recognize the option that the
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* getOptionName method returns.
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*
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* <p>
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* Once a plugin is activated, this method is called
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* for options that XJC didn't recognize. This allows
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* a plugin to define additional options to customize
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* its behavior.
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*
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* <p>
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* Since options can appear in no particular order,
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* XJC allows sub-options of a plugin to show up before
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* the option that activates a plugin (one that's returned
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* by {@link #getOptionName().)
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*
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* But nevertheless a {@link Plugin} needs to be activated
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* to participate in further processing.
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*
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* @return
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* 0 if the argument is not understood.
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* Otherwise return the number of tokens that are
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* consumed, including the option itself.
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* (so if you have an option like "-foo 3", return 2.)
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* @exception BadCommandLineException
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* If the option was recognized but there's an error.
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* This halts the argument parsing process and causes
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* XJC to abort, reporting an error.
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*/
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public int parseArgument( Options opt, String[] args, int i ) throws BadCommandLineException, IOException {
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return 0;
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}
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/**
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* Returns the list of namespace URIs that are supported by this plug-in
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* as schema annotations.
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*
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* <p>
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* If a plug-in returns a non-empty list, the JAXB RI will recognize
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* these namespace URIs as vendor extensions
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* (much like "http://java.sun.com/xml/ns/jaxb/xjc"). This allows users
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* to write those annotations inside a schema, or in external binding files,
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* and later plug-ins can access those annotations as DOM nodes.
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*
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* <p>
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* See <a href="http://java.sun.com/webservices/docs/1.5/jaxb/vendorCustomizations.html">
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* http://java.sun.com/webservices/docs/1.5/jaxb/vendorCustomizations.html</a>
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* for the syntax that users need to use to enable extension URIs.
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*
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* @return
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* can be empty, be never be null.
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*/
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public List<String> getCustomizationURIs() {
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return Collections.emptyList();
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}
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/**
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* Checks if the given tag name is a valid tag name for the customization element in this plug-in.
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*
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* <p>
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* This method is invoked by XJC to determine if the user-specified customization element
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* is really a customization or not. This information is used to pick the proper error message.
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*
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* <p>
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* A plug-in is still encouraged to do the validation of the customization element in the
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* {@link #run} method before using any {@link CPluginCustomization}, to make sure that it
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* has proper child elements and attributes.
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*
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* @param nsUri
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* the namespace URI of the element. Never null.
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* @param localName
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* the local name of the element. Never null.
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*/
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public boolean isCustomizationTagName(String nsUri,String localName) {
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return false;
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}
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/**
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* Notifies a plugin that it's activated.
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*
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* <p>
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* This method is called when a plugin is activated
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* through the command line option (as specified by {@link #getOptionName()}.
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*
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* <p>
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* This is a good opportunity to use
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* {@link Options#setFieldRendererFactory(FieldRendererFactory, Plugin)}
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* if a plugin so desires.
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*
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* <p>
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* Noop by default.
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*
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* @since JAXB 2.0 EA4
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*/
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public void onActivated(Options opts) throws BadCommandLineException {
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// noop
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}
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/**
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* Performs the post-processing of the {@link Model}.
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*
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* <p>
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* This method is invoked after XJC has internally finished
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* the model construction. This is a chance for a plugin to
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* affect the way code generation is performed.
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*
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* <p>
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* Compared to the {@link #run(Outline, Options, ErrorHandler)}
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* method, this method allows a plugin to work at the higher level
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* conceptually closer to the abstract JAXB model, as opposed to
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* Java syntax level.
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*
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* <p>
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* Note that this method is invoked only when a {@link Plugin}
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* is activated.
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*
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* @param model
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* The object that represents the classes/properties to
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* be generated.
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*
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* @param errorHandler
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* Errors should be reported to this handler.
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*
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* @since JAXB 2.0.2
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*/
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public void postProcessModel(Model model, ErrorHandler errorHandler) {
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// noop
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}
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/**
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* Run the add-on.
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*
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* <p>
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* This method is invoked after XJC has internally finished
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* the code generation. Plugins can tweak some of the generated
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* code (or add more code) by using {@link Outline} and {@link Options}.
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*
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* <p>
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* Note that this method is invoked only when a {@link Plugin}
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* is activated.
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*
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* @param outline
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* This object allows access to various generated code.
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*
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* @param errorHandler
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* Errors should be reported to this handler.
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*
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* @return
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* If the add-on executes successfully, return true.
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* If it detects some errors but those are reported and
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* recovered gracefully, return false.
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*
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* @throws SAXException
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* After an error is reported to {@link ErrorHandler}, the
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* same exception can be thrown to indicate a fatal irrecoverable
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* error. {@link ErrorHandler} itself may throw it, if it chooses
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* not to recover from the error.
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*/
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public abstract boolean run(
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Outline outline, Options opt, ErrorHandler errorHandler ) throws SAXException ;
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}
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