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
26package com.sun.tools.internal.ws.wsdl.parser;
27
28import org.w3c.dom.Document;
29import org.xml.sax.ContentHandler;
30import org.xml.sax.EntityResolver;
31import org.xml.sax.ErrorHandler;
32import org.xml.sax.InputSource;
33import org.xml.sax.SAXException;
34
35import java.io.IOException;
36
37import 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 */
47public 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}
96