com.sun.tools.xjc.reader.internalizer.DOMForestParser Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jaxb-xjc

Old JAXB Binding Compiler. Contains source code needed for binding customization files into java sources. In other words: the *tool* to generate java classes for the given xml representation.

There is a newer version: 4.0.5

Show newest version

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package com.sun.tools.xjc.reader.internalizer;

import java.io.IOException;

import com.sun.xml.xsom.parser.XMLParser;

import org.w3c.dom.Document;
import org.xml.sax.ContentHandler;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;


/**
 * {@link XMLParser} implementation that 
 * parses XML from a DOM forest instead of parsing it from
 * its original location.
 * 
 * @author
 *     Kohsuke Kawaguchi ([email protected])
 */
class DOMForestParser implements XMLParser {
    
    /** DOM forest to be "parsed". */
    private final DOMForest forest;
    
    /** Scanner object will do the actual SAX events generation. */
    private final DOMForestScanner scanner;
    
    private final XMLParser fallbackParser;
    
    /**
     * @param fallbackParser
     *      This parser will be used when DOMForestParser needs to parse
     *      documents that are not in the forest.
     */
    DOMForestParser( DOMForest forest, XMLParser fallbackParser ) {
        this.forest = forest;
        this.scanner = new DOMForestScanner(forest);
        this.fallbackParser = fallbackParser;
    }

    public void parse(
        InputSource source,
        ContentHandler contentHandler,
        ErrorHandler errorHandler,
        EntityResolver entityResolver )
        throws SAXException, IOException {
        
        String systemId = source.getSystemId();
        Document dom = forest.get(systemId);
        
        if(dom==null) {
            // if no DOM tree is built for it,
            // let the fall back parser parse the original document.
            //
            // for example, XSOM parses datatypes.xsd (XML Schema part 2)
            // but this will never be built into the forest.
            fallbackParser.parse( source, contentHandler, errorHandler, entityResolver );
            return;
        }
        
        scanner.scan( dom, contentHandler );
    }
}