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JMeter example source code file (

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

Java - JMeter tags/keywords

collection, hashmap, hashtree, hashtree, hashtreetraverser, hashtreetraverser, linkedlist, list, listedhashtree, listedhashtree, map, searchbyclass, searchbyclass, todo, util

The JMeter 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.jorphan.collections;

import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

 * Useful for finding all nodes in the tree that represent objects of a
 * particular type. For instance, if your tree contains all strings, and a few
 * StringBuilder objects, you can use the SearchByClass traverser to find all the
 * StringBuilder objects in your tree.
 * <p>
 * Usage is simple. Given a {@link HashTree} object "tree", and a SearchByClass
 * object:
 * <pre>
 * HashTree tree = new HashTree();
 * // ... tree gets filled with objects
 * SearchByClass searcher = new SearchByClass(StringBuilder.class);
 * tree.traverse(searcher);
 * Iterator iter = searcher.getSearchResults().iterator();
 * while (iter.hasNext()) {
 *  StringBuilder foundNode = (StringBuilder);
 *  HashTree subTreeOfFoundNode = searcher.getSubTree(foundNode);
 *  //  .... do something with node and subTree...
 * }
 * </pre>
 * @see HashTree
 * @see HashTreeTraverser
 * @version $Revision: 882000 $
public class SearchByClass<T> implements HashTreeTraverser {
    private final List<T> objectsOfClass = new LinkedList();

    private final Map<Object, ListedHashTree> subTrees = new HashMap();

    private final Class<T> searchClass;

     * Creates an instance of SearchByClass, and sets the Class to be searched
     * for.
     * @param searchClass
    public SearchByClass(Class<T> searchClass) {
        this.searchClass = searchClass;

     * After traversing the HashTree, call this method to get a collection of
     * the nodes that were found.
     * @return Collection All found nodes of the requested type
    public Collection<T> getSearchResults() { // TODO specify collection type without breaking callers
        return objectsOfClass;

     * Given a specific found node, this method will return the sub tree of that
     * node.
     * @param root
     *            the node for which the sub tree is requested
     * @return HashTree
    public HashTree getSubTree(Object root) {
        return subTrees.get(root);

    /** {@inheritDoc} */
    public void addNode(Object node, HashTree subTree) {
        if (searchClass.isAssignableFrom(node.getClass())) {
            objectsOfClass.add((T) node);
            ListedHashTree tree = new ListedHashTree(node);
            tree.set(node, subTree);
            subTrees.put(node, tree);

    /** {@inheritDoc} */
    public void subtractNode() {

    /** {@inheritDoc} */
    public void processPath() {

Other JMeter examples (source code examples)

Here is a short list of links related to this JMeter source code file:

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