I have been trying to import nodes from a Xindice DOM (produced from an XMLResource retrieved from the Xindice Database) into a DOM created with the Xerces parser.
This works well until I include attributes in the xml (http://www.w3.org/XML/1998/namespace) namespace (eg xml:lang) but do not explicitly declare the mapping from that namespace to the xml prefix using an xmlns:xml="http://www.w3.org/XML/1998/namespace";. When I do include such attributes, I get the error message: org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces. at org.apache.xerces.dom.CoreDocumentImpl.checkDOMNSErr(Unknown Source) at org.apache.xerces.dom.AttrNSImpl.setName(Unknown Source) ... I have attached a patch to the version of the Xindice code base that I checked out of SVN this morning that includes a new unit test that shows this behaviour. Regards Geoff Shuetrim
Index: java/tests/src/org/apache/xindice/xml/dom/NodeImportTest.java =================================================================== --- java/tests/src/org/apache/xindice/xml/dom/NodeImportTest.java +++ java/tests/src/org/apache/xindice/xml/dom/NodeImportTest.java @@ -0,0 +1,118 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * $Id: ImportTest.java 2008-02-28 12:41:00 +0000 (Thu, 28 Feb 2008) gshuetrim $ + */ + +package org.apache.xindice.xml.dom; + +import java.io.BufferedReader; +import java.io.FileInputStream; +import java.io.InputStreamReader; +import java.io.StringReader; + +import javax.xml.parsers.DocumentBuilder; +import javax.xml.parsers.DocumentBuilderFactory; + +import junit.framework.TestCase; + +import org.w3c.dom.Document; +import org.xml.sax.InputSource; + +/** + * Tests NodeImpl class + * @version $Revision: 518852 $, $Date: 2007-03-16 03:35:49 +0000 (Fri, 16 Mar 2007) $ + */ +public class NodeImportTest extends TestCase { + + private Document okXindiceDoc; + private Document okXercesDoc; + + private Document problemXindiceDoc; + private Document problemXercesDoc; + + protected void setUp() throws Exception { + super.setUp(); + okXindiceDoc = getXindiceDocument(getOKXml()); + okXercesDoc = getXercesDocument(getOKXml()); + problemXindiceDoc = getXindiceDocument(getProblemXml()); + problemXercesDoc = getXercesDocument(getProblemXml()); + } + + private String getProblemXml() { + return "<?xml version='1.0' encoding='UTF-8'?>" + + "<root xml:lang='en'/>"; + } + + private String getOKXml() { + return "<?xml version='1.0' encoding='UTF-8'?>" + + "<root xmlns:xml='http://www.w3.org/XML/1998/namespace' xml:lang='en'/>"; + } + + public void testExplicitlyDeclaredXMLNamespace() { + try { + okXercesDoc.importNode(okXindiceDoc.getDocumentElement(),true); + } catch (Exception e) { + e.printStackTrace(); + fail("Unexpected exception."); + } + } + + public void testImplicitlyDeclaredXMLNamespace() { + try { + problemXercesDoc.importNode(problemXindiceDoc.getDocumentElement(),true); + } catch (Exception e) { + e.printStackTrace(); + fail("Unexpected exception."); + } + } + + // DOM Builders + + private Document getXercesDocument(String xml) throws Exception { + DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); + factory.setNamespaceAware(true); + factory.setValidating(false); + DocumentBuilder builder = factory.newDocumentBuilder(); + return builder.parse(new InputSource(new StringReader(xml))); + } + + + private Document getXindiceDocument(String xml) throws Exception { + return DOMParser.toDocument(xml); + } + + private String file = "/home/geoff/test.xml"; + private String readFile(String file) { + String thisLine; + StringBuffer strb = new StringBuffer("") ; + + try { + FileInputStream fin = new FileInputStream(file); + BufferedReader myInput = new BufferedReader(new InputStreamReader(fin)); + while ((thisLine = myInput.readLine()) != null) { + strb.append(thisLine+"\n"); + } + String result = strb.toString(); + } + catch (Exception e) { + e.printStackTrace(); + } + return strb.toString(); + } + +} +
