1 /* 2 * Copyright (c) 2005, 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 26 package javax.xml.bind.annotation; 27 28 import org.w3c.dom.Document; 29 import org.w3c.dom.DocumentFragment; 30 import org.w3c.dom.Element; 31 import org.w3c.dom.Node; 32 33 import javax.xml.bind.ValidationEventHandler; 34 import javax.xml.parsers.DocumentBuilder; 35 import javax.xml.transform.Source; 36 import javax.xml.transform.dom.DOMResult; 37 import javax.xml.transform.dom.DOMSource; 38 39 /** 40 * {@link DomHandler} implementation for W3C DOM (<code>org.w3c.dom</code> package.) 41 * 42 * @author Kohsuke Kawaguchi 43 * @since JAXB2.0 44 */ 45 public class W3CDomHandler implements DomHandler<Element,DOMResult> { 46 47 private DocumentBuilder builder; 48 49 /** 50 * Default constructor. 51 * 52 * It is up to a JAXB provider to decide which DOM implementation 53 * to use or how that is configured. 54 */ 55 public W3CDomHandler() { 56 this.builder = null; 57 } 58 59 /** 60 * Constructor that allows applications to specify which DOM implementation 61 * to be used. 62 * 63 * @param builder 64 * must not be null. JAXB uses this {@link DocumentBuilder} to create 65 * a new element. 66 */ 67 public W3CDomHandler(DocumentBuilder builder) { 68 if(builder==null) 69 throw new IllegalArgumentException(); 70 this.builder = builder; 71 } 72 73 public DocumentBuilder getBuilder() { 74 return builder; 75 } 76 77 public void setBuilder(DocumentBuilder builder) { 78 this.builder = builder; 79 } 80 81 public DOMResult createUnmarshaller(ValidationEventHandler errorHandler) { 82 if(builder==null) 83 return new DOMResult(); 84 else 85 return new DOMResult(builder.newDocument()); 86 } 87 88 public Element getElement(DOMResult r) { 89 // JAXP spec is ambiguous about what really happens in this case, 90 // so work defensively 91 Node n = r.getNode(); 92 if( n instanceof Document ) { 93 return ((Document)n).getDocumentElement(); 94 } 95 if( n instanceof Element ) 96 return (Element)n; 97 if( n instanceof DocumentFragment ) 98 return (Element)n.getChildNodes().item(0); 99 100 // if the result object contains something strange, 101 // it is not a user problem, but it is a JAXB provider's problem. 102 // That's why we throw a runtime exception. 103 throw new IllegalStateException(n.toString()); 104 } 105 106 public Source marshal(Element element, ValidationEventHandler errorHandler) { 107 return new DOMSource(element); 108 } 109 }