/*
 * 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.control;

import java.io.Serializable;
import java.util.Collections;

/**
 * A controller that runs its children each at most once, but in a random order.
 */
public class RandomOrderController extends GenericController implements Serializable {

    private static final long serialVersionUID = 240L;

    public RandomOrderController() {
    }

    /**
     * @see GenericController#initialize()
     */
    @Override
    public void initialize() {
        super.initialize();
        this.reorder();
    }

    /**
     * @see GenericController#reInitialize()
     */
    @Override
    protected void reInitialize() {
        super.reInitialize();
        this.reorder();
    }

    /**
     * Replace the subControllersAndSamplers list with a reordered ArrayList.
     */
    private void reorder() {
        Collections.shuffle(subControllersAndSamplers);
    }
}
