Mercurial > jdk8-mips64-public > jaxws / file comparison

comparison: src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/DomLoader.java

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/DomLoader.java

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1 /*
2 * Copyright (c) 1997, 2011, 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.xml.internal.bind.v2.runtime.unmarshaller;
27
28 import com.sun.xml.internal.bind.v2.WellKnownNamespace;
29 import javax.xml.bind.annotation.DomHandler;
30 import javax.xml.transform.Result;
31 import javax.xml.transform.sax.TransformerHandler;
32 import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
33 import org.xml.sax.SAXException;
34
35 /**
36 * Loads a DOM.
37 *
38 * @author Kohsuke Kawaguchi
39 */
40 public class DomLoader<ResultT extends Result> extends Loader {
41
42 private final DomHandler<?,ResultT> dom;
43
44 /**
45 * Used to capture the state.
46 *
47 * This instance is created for each unmarshalling episode.
48 */
49 private final class State {
50 /** This handler will receive SAX events. */
51 private final TransformerHandler handler = JAXBContextImpl.createTransformerHandler();
52
53 /** {@link #handler} will produce this result. */
54 private final ResultT result;
55
56 // nest level of elements.
57 int depth = 1;
58
59 public State( UnmarshallingContext context ) throws SAXException {
60 result = dom.createUnmarshaller(context);
61
62 handler.setResult(result);
63
64 // emulate the start of documents
65 try {
66 handler.setDocumentLocator(context.getLocator());
67 handler.startDocument();
68 declarePrefixes( context, context.getAllDeclaredPrefixes() );
69 } catch( SAXException e ) {
70 context.handleError(e);
71 throw e;
72 }
73 }
74
75 public Object getElement() {
76 return dom.getElement(result);
77 }
78
79 private void declarePrefixes( UnmarshallingContext context, String[] prefixes ) throws SAXException {
80 for( int i=prefixes.length-1; i>=0; i-- ) {
81 String nsUri = context.getNamespaceURI(prefixes[i]);
82 if(nsUri==null) throw new IllegalStateException("prefix \'"+prefixes[i]+"\' isn't bound");
83 handler.startPrefixMapping(prefixes[i],nsUri );
84 }
85 }
86
87 private void undeclarePrefixes( String[] prefixes ) throws SAXException {
88 for( int i=prefixes.length-1; i>=0; i-- )
89 handler.endPrefixMapping( prefixes[i] );
90 }
91 }
92
93 public DomLoader(DomHandler<?, ResultT> dom) {
94 super(true);
95 this.dom = dom;
96 }
97
98 @Override
99 public void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
100 UnmarshallingContext context = state.getContext();
101 if (state.target == null)
102 state.target = new State(context);
103
104 State s = (State) state.target;
105 try {
106 s.declarePrefixes(context, context.getNewlyDeclaredPrefixes());
107 s.handler.startElement(ea.uri, ea.local, ea.getQname(), ea.atts);
108 } catch (SAXException e) {
109 context.handleError(e);
110 throw e;
111 }
112 }
113
114 @Override
115 public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
116 state.loader = this;
117 State s = (State) state.prev.target;
118 s.depth++;
119 state.target = s;
120 }
121
122 @Override
123 public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException {
124 if(text.length()==0)
125 return; // there's no point in creating an empty Text node in DOM.
126 try {
127 State s = (State) state.target;
128 s.handler.characters(text.toString().toCharArray(),0,text.length());
129 } catch( SAXException e ) {
130 state.getContext().handleError(e);
131 throw e;
132 }
133 }
134
135 @Override
136 public void leaveElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
137 State s = (State) state.target;
138 UnmarshallingContext context = state.getContext();
139
140 try {
141 s.handler.endElement(ea.uri, ea.local, ea.getQname());
142 s.undeclarePrefixes(context.getNewlyDeclaredPrefixes());
143 } catch( SAXException e ) {
144 context.handleError(e);
145 throw e;
146 }
147
148 if((--s.depth)==0) {
149 // emulate the end of the document
150 try {
151 s.undeclarePrefixes(context.getAllDeclaredPrefixes());
152 s.handler.endDocument();
153 } catch( SAXException e ) {
154 context.handleError(e);
155 throw e;
156 }
157
158 // we are done
159 state.target = s.getElement();
160 }
161 }
162
163 }

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