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package javax.xml.bind.annotation;

import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

import javax.xml.bind.ValidationEventHandler;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;

DomHandler implementation for W3C DOM (org.w3c.dom package.)
Author:Kohsuke Kawaguchi
Since:1.6, JAXB 2.0
/** * {@link DomHandler} implementation for W3C DOM (<code>org.w3c.dom</code> package.) * * @author Kohsuke Kawaguchi * @since 1.6, JAXB 2.0 */
public class W3CDomHandler implements DomHandler<Element,DOMResult> { private DocumentBuilder builder;
Default constructor. It is up to a JAXB provider to decide which DOM implementation to use or how that is configured.
/** * Default constructor. * * It is up to a JAXB provider to decide which DOM implementation * to use or how that is configured. */
public W3CDomHandler() { this.builder = null; }
Constructor that allows applications to specify which DOM implementation to be used.
Params:
  • builder – must not be null. JAXB uses this DocumentBuilder to create a new element.
/** * Constructor that allows applications to specify which DOM implementation * to be used. * * @param builder * must not be null. JAXB uses this {@link DocumentBuilder} to create * a new element. */
public W3CDomHandler(DocumentBuilder builder) { if(builder==null) throw new IllegalArgumentException(); this.builder = builder; } public DocumentBuilder getBuilder() { return builder; } public void setBuilder(DocumentBuilder builder) { this.builder = builder; } public DOMResult createUnmarshaller(ValidationEventHandler errorHandler) { if(builder==null) return new DOMResult(); else return new DOMResult(builder.newDocument()); } public Element getElement(DOMResult r) { // JAXP spec is ambiguous about what really happens in this case, // so work defensively Node n = r.getNode(); if( n instanceof Document ) { return ((Document)n).getDocumentElement(); } if( n instanceof Element ) return (Element)n; if( n instanceof DocumentFragment ) return (Element)n.getChildNodes().item(0); // if the result object contains something strange, // it is not a user problem, but it is a JAXB provider's problem. // That's why we throw a runtime exception. throw new IllegalStateException(n.toString()); } public Source marshal(Element element, ValidationEventHandler errorHandler) { return new DOMSource(element); } }