Thu, 31 Aug 2017 15:18:52 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import javax.xml.bind.annotation.DomHandler; |
aoqi@0 | 29 | import javax.xml.transform.Result; |
aoqi@0 | 30 | import javax.xml.transform.sax.TransformerHandler; |
aoqi@0 | 31 | import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl; |
aoqi@0 | 32 | import org.xml.sax.SAXException; |
aoqi@0 | 33 | |
aoqi@0 | 34 | /** |
aoqi@0 | 35 | * Loads a DOM. |
aoqi@0 | 36 | * |
aoqi@0 | 37 | * @author Kohsuke Kawaguchi |
aoqi@0 | 38 | */ |
aoqi@0 | 39 | public class DomLoader<ResultT extends Result> extends Loader { |
aoqi@0 | 40 | |
aoqi@0 | 41 | private final DomHandler<?,ResultT> dom; |
aoqi@0 | 42 | |
aoqi@0 | 43 | /** |
aoqi@0 | 44 | * Used to capture the state. |
aoqi@0 | 45 | * |
aoqi@0 | 46 | * This instance is created for each unmarshalling episode. |
aoqi@0 | 47 | */ |
aoqi@0 | 48 | private final class State { |
aoqi@0 | 49 | |
aoqi@0 | 50 | /** This handler will receive SAX events. */ |
aoqi@0 | 51 | private TransformerHandler handler = null; |
aoqi@0 | 52 | |
aoqi@0 | 53 | /** {@link #handler} will produce this result. */ |
aoqi@0 | 54 | private final ResultT result; |
aoqi@0 | 55 | |
aoqi@0 | 56 | // nest level of elements. |
aoqi@0 | 57 | int depth = 1; |
aoqi@0 | 58 | |
aoqi@0 | 59 | public State( UnmarshallingContext context ) throws SAXException { |
aoqi@0 | 60 | handler = JAXBContextImpl.createTransformerHandler(context.getJAXBContext().disableSecurityProcessing); |
aoqi@0 | 61 | result = dom.createUnmarshaller(context); |
aoqi@0 | 62 | |
aoqi@0 | 63 | handler.setResult(result); |
aoqi@0 | 64 | |
aoqi@0 | 65 | // emulate the start of documents |
aoqi@0 | 66 | try { |
aoqi@0 | 67 | handler.setDocumentLocator(context.getLocator()); |
aoqi@0 | 68 | handler.startDocument(); |
aoqi@0 | 69 | declarePrefixes( context, context.getAllDeclaredPrefixes() ); |
aoqi@0 | 70 | } catch( SAXException e ) { |
aoqi@0 | 71 | context.handleError(e); |
aoqi@0 | 72 | throw e; |
aoqi@0 | 73 | } |
aoqi@0 | 74 | } |
aoqi@0 | 75 | |
aoqi@0 | 76 | public Object getElement() { |
aoqi@0 | 77 | return dom.getElement(result); |
aoqi@0 | 78 | } |
aoqi@0 | 79 | |
aoqi@0 | 80 | private void declarePrefixes( UnmarshallingContext context, String[] prefixes ) throws SAXException { |
aoqi@0 | 81 | for( int i=prefixes.length-1; i>=0; i-- ) { |
aoqi@0 | 82 | String nsUri = context.getNamespaceURI(prefixes[i]); |
aoqi@0 | 83 | if(nsUri==null) throw new IllegalStateException("prefix \'"+prefixes[i]+"\' isn't bound"); |
aoqi@0 | 84 | handler.startPrefixMapping(prefixes[i],nsUri ); |
aoqi@0 | 85 | } |
aoqi@0 | 86 | } |
aoqi@0 | 87 | |
aoqi@0 | 88 | private void undeclarePrefixes( String[] prefixes ) throws SAXException { |
aoqi@0 | 89 | for( int i=prefixes.length-1; i>=0; i-- ) |
aoqi@0 | 90 | handler.endPrefixMapping( prefixes[i] ); |
aoqi@0 | 91 | } |
aoqi@0 | 92 | } |
aoqi@0 | 93 | |
aoqi@0 | 94 | public DomLoader(DomHandler<?, ResultT> dom) { |
aoqi@0 | 95 | super(true); |
aoqi@0 | 96 | this.dom = dom; |
aoqi@0 | 97 | } |
aoqi@0 | 98 | |
aoqi@0 | 99 | @Override |
aoqi@0 | 100 | public void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
aoqi@0 | 101 | UnmarshallingContext context = state.getContext(); |
aoqi@0 | 102 | if (state.target == null) |
aoqi@0 | 103 | state.target = new State(context); |
aoqi@0 | 104 | |
aoqi@0 | 105 | State s = (State) state.target; |
aoqi@0 | 106 | try { |
aoqi@0 | 107 | s.declarePrefixes(context, context.getNewlyDeclaredPrefixes()); |
aoqi@0 | 108 | s.handler.startElement(ea.uri, ea.local, ea.getQname(), ea.atts); |
aoqi@0 | 109 | } catch (SAXException e) { |
aoqi@0 | 110 | context.handleError(e); |
aoqi@0 | 111 | throw e; |
aoqi@0 | 112 | } |
aoqi@0 | 113 | } |
aoqi@0 | 114 | |
aoqi@0 | 115 | @Override |
aoqi@0 | 116 | public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
aoqi@0 | 117 | state.loader = this; |
aoqi@0 | 118 | State s = (State) state.prev.target; |
aoqi@0 | 119 | s.depth++; |
aoqi@0 | 120 | state.target = s; |
aoqi@0 | 121 | } |
aoqi@0 | 122 | |
aoqi@0 | 123 | @Override |
aoqi@0 | 124 | public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException { |
aoqi@0 | 125 | if(text.length()==0) |
aoqi@0 | 126 | return; // there's no point in creating an empty Text node in DOM. |
aoqi@0 | 127 | try { |
aoqi@0 | 128 | State s = (State) state.target; |
aoqi@0 | 129 | s.handler.characters(text.toString().toCharArray(),0,text.length()); |
aoqi@0 | 130 | } catch( SAXException e ) { |
aoqi@0 | 131 | state.getContext().handleError(e); |
aoqi@0 | 132 | throw e; |
aoqi@0 | 133 | } |
aoqi@0 | 134 | } |
aoqi@0 | 135 | |
aoqi@0 | 136 | @Override |
aoqi@0 | 137 | public void leaveElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
aoqi@0 | 138 | State s = (State) state.target; |
aoqi@0 | 139 | UnmarshallingContext context = state.getContext(); |
aoqi@0 | 140 | |
aoqi@0 | 141 | try { |
aoqi@0 | 142 | s.handler.endElement(ea.uri, ea.local, ea.getQname()); |
aoqi@0 | 143 | s.undeclarePrefixes(context.getNewlyDeclaredPrefixes()); |
aoqi@0 | 144 | } catch( SAXException e ) { |
aoqi@0 | 145 | context.handleError(e); |
aoqi@0 | 146 | throw e; |
aoqi@0 | 147 | } |
aoqi@0 | 148 | |
aoqi@0 | 149 | if((--s.depth)==0) { |
aoqi@0 | 150 | // emulate the end of the document |
aoqi@0 | 151 | try { |
aoqi@0 | 152 | s.undeclarePrefixes(context.getAllDeclaredPrefixes()); |
aoqi@0 | 153 | s.handler.endDocument(); |
aoqi@0 | 154 | } catch( SAXException e ) { |
aoqi@0 | 155 | context.handleError(e); |
aoqi@0 | 156 | throw e; |
aoqi@0 | 157 | } |
aoqi@0 | 158 | |
aoqi@0 | 159 | // we are done |
aoqi@0 | 160 | state.target = s.getElement(); |
aoqi@0 | 161 | } |
aoqi@0 | 162 | } |
aoqi@0 | 163 | |
aoqi@0 | 164 | } |