1 /*
   2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.tools.internal.ws.wsdl.parser;
  27 
  28 import org.w3c.dom.Document;
  29 import org.xml.sax.ContentHandler;
  30 import org.xml.sax.EntityResolver;
  31 import org.xml.sax.ErrorHandler;
  32 import org.xml.sax.InputSource;
  33 import org.xml.sax.SAXException;
  34 
  35 import java.io.IOException;
  36 
  37 import com.sun.xml.internal.xsom.parser.XMLParser;
  38 
  39 /**
  40  * {@link XMLParser} implementation that
  41  * parses XML from a DOM forest instead of parsing it from
  42  * its original location.
  43  *
  44  * @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
  45  * @author Vivek Pandey
  46  */
  47 public class DOMForestParser implements XMLParser {
  48 
  49     /**
  50      * DOM forest to be "parsed".
  51      */
  52     private final DOMForest forest;
  53 
  54     /**
  55      * Scanner object will do the actual SAX events generation.
  56      */
  57     private final DOMForestScanner scanner;
  58 
  59     private final XMLParser fallbackParser;
  60 
  61     /**
  62      * @param fallbackParser This parser will be used when DOMForestParser needs to parse
  63      *                       documents that are not in the forest.
  64      */
  65     public DOMForestParser(DOMForest forest, XMLParser fallbackParser) {
  66         this.forest = forest;
  67         this.scanner = new DOMForestScanner(forest);
  68         this.fallbackParser = fallbackParser;
  69     }
  70 
  71 
  72     public void parse(InputSource source, ContentHandler handler,  EntityResolver entityResolver, ErrorHandler errHandler) throws SAXException, IOException {
  73 
  74     }
  75 
  76     public void parse(InputSource source, ContentHandler handler, ErrorHandler errorHandler, EntityResolver entityResolver)
  77 
  78             throws SAXException, IOException {
  79         String systemId = source.getSystemId();
  80         Document dom = forest.get(systemId);
  81 
  82         if (dom == null) {
  83             // if no DOM tree is built for it,
  84             // let the fall back parser parse the original document.
  85             //
  86             // for example, XSOM parses datatypes.xsd (XML Schema part 2)
  87             // but this will never be built into the forest.
  88             fallbackParser.parse(source, handler, errorHandler, entityResolver);
  89             return;
  90         }
  91 
  92         scanner.scan(dom, handler);
  93 
  94     }
  95 }