| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
| |
| import javax.xml.bind.annotation.DomHandler; |
| import javax.xml.transform.Result; |
| import javax.xml.transform.sax.TransformerHandler; |
| import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Loads a DOM. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| public class DomLoader<ResultT extends Result> extends Loader { |
| |
| private final DomHandler<?,ResultT> dom; |
| |
| /** |
| * Used to capture the state. |
| * |
| * This instance is created for each unmarshalling episode. |
| */ |
| private final class State { |
| |
| /** This handler will receive SAX events. */ |
| private TransformerHandler handler = null; |
| |
| /** {@link #handler} will produce this result. */ |
| private final ResultT result; |
| |
| // nest level of elements. |
| int depth = 1; |
| |
| public State( UnmarshallingContext context ) throws SAXException { |
| handler = JAXBContextImpl.createTransformerHandler(context.getJAXBContext().disableSecurityProcessing); |
| result = dom.createUnmarshaller(context); |
| |
| handler.setResult(result); |
| |
| // emulate the start of documents |
| try { |
| handler.setDocumentLocator(context.getLocator()); |
| handler.startDocument(); |
| declarePrefixes( context, context.getAllDeclaredPrefixes() ); |
| } catch( SAXException e ) { |
| context.handleError(e); |
| throw e; |
| } |
| } |
| |
| public Object getElement() { |
| return dom.getElement(result); |
| } |
| |
| private void declarePrefixes( UnmarshallingContext context, String[] prefixes ) throws SAXException { |
| for( int i=prefixes.length-1; i>=0; i-- ) { |
| String nsUri = context.getNamespaceURI(prefixes[i]); |
| if(nsUri==null) throw new IllegalStateException("prefix \'"+prefixes[i]+"\' isn't bound"); |
| handler.startPrefixMapping(prefixes[i],nsUri ); |
| } |
| } |
| |
| private void undeclarePrefixes( String[] prefixes ) throws SAXException { |
| for( int i=prefixes.length-1; i>=0; i-- ) |
| handler.endPrefixMapping( prefixes[i] ); |
| } |
| } |
| |
| public DomLoader(DomHandler<?, ResultT> dom) { |
| super(true); |
| this.dom = dom; |
| } |
| |
| @Override |
| public void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
| UnmarshallingContext context = state.getContext(); |
| if (state.getTarget() == null) |
| state.setTarget(new State(context)); |
| |
| State s = (State) state.getTarget(); |
| try { |
| s.declarePrefixes(context, context.getNewlyDeclaredPrefixes()); |
| s.handler.startElement(ea.uri, ea.local, ea.getQname(), ea.atts); |
| } catch (SAXException e) { |
| context.handleError(e); |
| throw e; |
| } |
| } |
| |
| @Override |
| public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
| state.setLoader(this); |
| State s = (State) state.getPrev().getTarget(); |
| s.depth++; |
| state.setTarget(s); |
| } |
| |
| @Override |
| public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException { |
| if(text.length()==0) |
| return; // there's no point in creating an empty Text node in DOM. |
| try { |
| State s = (State) state.getTarget(); |
| s.handler.characters(text.toString().toCharArray(),0,text.length()); |
| } catch( SAXException e ) { |
| state.getContext().handleError(e); |
| throw e; |
| } |
| } |
| |
| @Override |
| public void leaveElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
| State s = (State) state.getTarget(); |
| UnmarshallingContext context = state.getContext(); |
| |
| try { |
| s.handler.endElement(ea.uri, ea.local, ea.getQname()); |
| s.undeclarePrefixes(context.getNewlyDeclaredPrefixes()); |
| } catch( SAXException e ) { |
| context.handleError(e); |
| throw e; |
| } |
| |
| if((--s.depth)==0) { |
| // emulate the end of the document |
| try { |
| s.undeclarePrefixes(context.getAllDeclaredPrefixes()); |
| s.handler.endDocument(); |
| } catch( SAXException e ) { |
| context.handleError(e); |
| throw e; |
| } |
| |
| // we are done |
| state.setTarget(s.getElement()); |
| } |
| } |
| |
| } |