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JMeter example source code file (TreeCloner.java)

This example JMeter source code file (TreeCloner.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - JMeter tags/keywords

check, hashtree, hashtreetraverser, linkedlist, linkedlist, listedhashtree, listedhashtree, nothreadclone, testelement, testelement, treecloner, treecloner, util

The JMeter TreeCloner.java source code

/*
 * 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.
 *
 */

package org.apache.jmeter.engine;

import java.util.LinkedList;

import org.apache.jmeter.engine.util.NoThreadClone;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jorphan.collections.HashTree;
import org.apache.jorphan.collections.HashTreeTraverser;
import org.apache.jorphan.collections.ListedHashTree;

public class TreeCloner implements HashTreeTraverser {

    private final ListedHashTree newTree;

    private final LinkedList<Object> objects = new LinkedList();

    private final boolean honourNoThreadClone;

    /**
     * Clone the test tree, honouring NoThreadClone markers.
     * 
     */
    public TreeCloner() {
        this(true);
    }

    /**
     * Clone the test tree.
     * 
     * @param honourNoThreadClone set false to clone NoThreadClone nodes as well
     */
    public TreeCloner(boolean honourNoThreadClone) {
        newTree = new ListedHashTree();
        this.honourNoThreadClone = honourNoThreadClone;
    }

    public void addNode(Object node, HashTree subTree) {
        
        if ( (node instanceof TestElement) // Check can cast for clone
           // Don't clone NoThreadClone unless honourNoThreadClone == false
          && (!honourNoThreadClone || !(node instanceof NoThreadClone))
        ) {
            node = ((TestElement) node).clone();
            newTree.add(objects, node);
        } else {
            newTree.add(objects, node);
        }
        objects.addLast(node);
    }

    public void subtractNode() {
        objects.removeLast();
    }

    public ListedHashTree getClonedTree() {
        return newTree;
    }

    public void processPath() {
    }

}




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