updateflowfileutils.java

一个java写的business process management系统

/*
 * Copyright (c) 2003-2004, Alexander Greif
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Flow4J-Eclipse project nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.orthanc.flow4j.flows.updateflowfile;

import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;

/**
 * Class UpdateFlowFileUtils. SOme Utility methods for the updating of flow files.
 * @author greifa
 * 
 */
public class UpdateFlowFileUtils {

	/**
	 * 
	 * Renames a DOM element. Creates a new element. Copies all the contents and the 
	 * attributes too.
	 * @param doc the DOM document
	 * @param oldElem the element to be renamed
	 * @param newName the new name of the element
	 * @return the renamed Element
	 */
	static Element renameElement(Document doc, Element oldElem, String newName) {
		// Create an element with the new name
		Element newElem = doc.createElement(newName);
		// Copy the attributes to the new element
		NamedNodeMap attrs = oldElem.getAttributes();
		for (int i = 0; i < attrs.getLength(); i++) {
			Attr attr2 = (Attr) doc.importNode(attrs.item(i), true);
			newElem.getAttributes().setNamedItem(attr2);
		}
		//	Move all the children
		while (oldElem.hasChildNodes()) {
			newElem.appendChild(oldElem.getFirstChild());
		}
		//	Replace the old node with the new node
		oldElem.getParentNode().replaceChild(newElem, oldElem);
		
		return newElem;
	}


}