1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/DomLoader.java Tue Mar 06 16:09:35 2012 -0800
1.3 @@ -0,0 +1,163 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.xml.internal.bind.v2.runtime.unmarshaller;
1.30 +
1.31 +import com.sun.xml.internal.bind.v2.WellKnownNamespace;
1.32 +import javax.xml.bind.annotation.DomHandler;
1.33 +import javax.xml.transform.Result;
1.34 +import javax.xml.transform.sax.TransformerHandler;
1.35 +import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
1.36 +import org.xml.sax.SAXException;
1.37 +
1.38 +/**
1.39 + * Loads a DOM.
1.40 + *
1.41 + * @author Kohsuke Kawaguchi
1.42 + */
1.43 +public class DomLoader<ResultT extends Result> extends Loader {
1.44 +
1.45 + private final DomHandler<?,ResultT> dom;
1.46 +
1.47 + /**
1.48 + * Used to capture the state.
1.49 + *
1.50 + * This instance is created for each unmarshalling episode.
1.51 + */
1.52 + private final class State {
1.53 + /** This handler will receive SAX events. */
1.54 + private final TransformerHandler handler = JAXBContextImpl.createTransformerHandler();
1.55 +
1.56 + /** {@link #handler} will produce this result. */
1.57 + private final ResultT result;
1.58 +
1.59 + // nest level of elements.
1.60 + int depth = 1;
1.61 +
1.62 + public State( UnmarshallingContext context ) throws SAXException {
1.63 + result = dom.createUnmarshaller(context);
1.64 +
1.65 + handler.setResult(result);
1.66 +
1.67 + // emulate the start of documents
1.68 + try {
1.69 + handler.setDocumentLocator(context.getLocator());
1.70 + handler.startDocument();
1.71 + declarePrefixes( context, context.getAllDeclaredPrefixes() );
1.72 + } catch( SAXException e ) {
1.73 + context.handleError(e);
1.74 + throw e;
1.75 + }
1.76 + }
1.77 +
1.78 + public Object getElement() {
1.79 + return dom.getElement(result);
1.80 + }
1.81 +
1.82 + private void declarePrefixes( UnmarshallingContext context, String[] prefixes ) throws SAXException {
1.83 + for( int i=prefixes.length-1; i>=0; i-- ) {
1.84 + String nsUri = context.getNamespaceURI(prefixes[i]);
1.85 + if(nsUri==null) throw new IllegalStateException("prefix \'"+prefixes[i]+"\' isn't bound");
1.86 + handler.startPrefixMapping(prefixes[i],nsUri );
1.87 + }
1.88 + }
1.89 +
1.90 + private void undeclarePrefixes( String[] prefixes ) throws SAXException {
1.91 + for( int i=prefixes.length-1; i>=0; i-- )
1.92 + handler.endPrefixMapping( prefixes[i] );
1.93 + }
1.94 + }
1.95 +
1.96 + public DomLoader(DomHandler<?, ResultT> dom) {
1.97 + super(true);
1.98 + this.dom = dom;
1.99 + }
1.100 +
1.101 + @Override
1.102 + public void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
1.103 + UnmarshallingContext context = state.getContext();
1.104 + if (state.target == null)
1.105 + state.target = new State(context);
1.106 +
1.107 + State s = (State) state.target;
1.108 + try {
1.109 + s.declarePrefixes(context, context.getNewlyDeclaredPrefixes());
1.110 + s.handler.startElement(ea.uri, ea.local, ea.getQname(), ea.atts);
1.111 + } catch (SAXException e) {
1.112 + context.handleError(e);
1.113 + throw e;
1.114 + }
1.115 + }
1.116 +
1.117 + @Override
1.118 + public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
1.119 + state.loader = this;
1.120 + State s = (State) state.prev.target;
1.121 + s.depth++;
1.122 + state.target = s;
1.123 + }
1.124 +
1.125 + @Override
1.126 + public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException {
1.127 + if(text.length()==0)
1.128 + return; // there's no point in creating an empty Text node in DOM.
1.129 + try {
1.130 + State s = (State) state.target;
1.131 + s.handler.characters(text.toString().toCharArray(),0,text.length());
1.132 + } catch( SAXException e ) {
1.133 + state.getContext().handleError(e);
1.134 + throw e;
1.135 + }
1.136 + }
1.137 +
1.138 + @Override
1.139 + public void leaveElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
1.140 + State s = (State) state.target;
1.141 + UnmarshallingContext context = state.getContext();
1.142 +
1.143 + try {
1.144 + s.handler.endElement(ea.uri, ea.local, ea.getQname());
1.145 + s.undeclarePrefixes(context.getNewlyDeclaredPrefixes());
1.146 + } catch( SAXException e ) {
1.147 + context.handleError(e);
1.148 + throw e;
1.149 + }
1.150 +
1.151 + if((--s.depth)==0) {
1.152 + // emulate the end of the document
1.153 + try {
1.154 + s.undeclarePrefixes(context.getAllDeclaredPrefixes());
1.155 + s.handler.endDocument();
1.156 + } catch( SAXException e ) {
1.157 + context.handleError(e);
1.158 + throw e;
1.159 + }
1.160 +
1.161 + // we are done
1.162 + state.target = s.getElement();
1.163 + }
1.164 + }
1.165 +
1.166 +}
