Java XML Element Create createElementMapping(final Document doc1, final Document doc2)

Description

Creates the element mapping for the specified documents.

License

Apache License

Parameter

Parameter	Description
doc1	the source document
doc2	the destination document

Return

the element mapping

Declaration

private static Map<Node, Node> createElementMapping(final Document doc1, final Document doc2) 

Method Source Code

//package com.java2s;
/*/*from ww  w .j  av  a  2s  .  c  o  m*/
 * 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.
 */

import java.util.HashMap;
import java.util.Map;
import org.w3c.dom.Document;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * Creates the element mapping for the specified documents. For each node in
     * the source document an entry is created pointing to the corresponding
     * node in the destination object.
     *
     * @param doc1 the source document
     * @param doc2 the destination document
     * @return the element mapping
     */
    private static Map<Node, Node> createElementMapping(final Document doc1, final Document doc2) {
        final Map<Node, Node> mapping = new HashMap<>();
        createElementMappingForNodes(doc1.getDocumentElement(), doc2.getDocumentElement(), mapping);
        return mapping;
    }

    /**
     * Creates the element mapping for the specified nodes and all their child
     * nodes.
     *
     * @param n1 node 1
     * @param n2 node 2
     * @param mapping the mapping to be filled
     */
    private static void createElementMappingForNodes(final Node n1, final Node n2, final Map<Node, Node> mapping) {
        mapping.put(n1, n2);
        final NodeList childNodes1 = n1.getChildNodes();
        final NodeList childNodes2 = n2.getChildNodes();
        final int count = Math.min(childNodes1.getLength(), childNodes2.getLength());
        for (int i = 0; i < count; i++) {
            createElementMappingForNodes(childNodes1.item(i), childNodes2.item(i), mapping);
        }
    }
}

Related

1. createElement(String tagName, String text, Document doc)
2. createElementAndText(Element parent, String elementName, String text)
3. createElementInSameNamespace(Element parent, String localName)
4. createElementInTempDocument(String name, String prefix, String namespaceURI)
5. createElementLn(Document d, String name, String value, boolean isCDATA)
6. createElementMappingForNodes(final Node n1, final Node n2, final Map mapping)
7. createElementNS(Document doc, String namespaceURI, String prefix, String nodeName)
8. createElementNS(Document root, String namespaceURI, String qualifiedName)
9. createElementNS(String namespaceURI, String qualifiedName, String text, Document doc)