aoqi@0: /*
aoqi@0:  * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package javax.xml.bind.annotation;
aoqi@0: 
aoqi@0: import org.w3c.dom.Document;
aoqi@0: import org.w3c.dom.DocumentFragment;
aoqi@0: import org.w3c.dom.Element;
aoqi@0: import org.w3c.dom.Node;
aoqi@0: 
aoqi@0: import javax.xml.bind.ValidationEventHandler;
aoqi@0: import javax.xml.parsers.DocumentBuilder;
aoqi@0: import javax.xml.transform.Source;
aoqi@0: import javax.xml.transform.dom.DOMResult;
aoqi@0: import javax.xml.transform.dom.DOMSource;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * {@link DomHandler} implementation for W3C DOM (<code>org.w3c.dom</code> package.)
aoqi@0:  *
aoqi@0:  * @author Kohsuke Kawaguchi
aoqi@0:  * @since JAXB2.0
aoqi@0:  */
aoqi@0: public class W3CDomHandler implements DomHandler<Element,DOMResult> {
aoqi@0: 
aoqi@0:     private DocumentBuilder builder;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Default constructor.
aoqi@0:      *
aoqi@0:      * It is up to a JAXB provider to decide which DOM implementation
aoqi@0:      * to use or how that is configured.
aoqi@0:      */
aoqi@0:     public W3CDomHandler() {
aoqi@0:         this.builder = null;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Constructor that allows applications to specify which DOM implementation
aoqi@0:      * to be used.
aoqi@0:      *
aoqi@0:      * @param builder
aoqi@0:      *      must not be null. JAXB uses this {@link DocumentBuilder} to create
aoqi@0:      *      a new element.
aoqi@0:      */
aoqi@0:     public W3CDomHandler(DocumentBuilder builder) {
aoqi@0:         if(builder==null)
aoqi@0:             throw new IllegalArgumentException();
aoqi@0:         this.builder = builder;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public DocumentBuilder getBuilder() {
aoqi@0:         return builder;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void setBuilder(DocumentBuilder builder) {
aoqi@0:         this.builder = builder;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public DOMResult createUnmarshaller(ValidationEventHandler errorHandler) {
aoqi@0:         if(builder==null)
aoqi@0:             return new DOMResult();
aoqi@0:         else
aoqi@0:             return new DOMResult(builder.newDocument());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Element getElement(DOMResult r) {
aoqi@0:         // JAXP spec is ambiguous about what really happens in this case,
aoqi@0:         // so work defensively
aoqi@0:         Node n = r.getNode();
aoqi@0:         if( n instanceof Document ) {
aoqi@0:             return ((Document)n).getDocumentElement();
aoqi@0:         }
aoqi@0:         if( n instanceof Element )
aoqi@0:             return (Element)n;
aoqi@0:         if( n instanceof DocumentFragment )
aoqi@0:             return (Element)n.getChildNodes().item(0);
aoqi@0: 
aoqi@0:         // if the result object contains something strange,
aoqi@0:         // it is not a user problem, but it is a JAXB provider's problem.
aoqi@0:         // That's why we throw a runtime exception.
aoqi@0:         throw new IllegalStateException(n.toString());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Source marshal(Element element, ValidationEventHandler errorHandler) {
aoqi@0:         return new DOMSource(element);
aoqi@0:     }
aoqi@0: }