JMeter example source code file (LongSum.java)

This example JMeter source code file (LongSum.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

abstractfunction, invalidvariableexception, jmetervariables, key, key, list, longsum, non-nls-1, non-nls-1, override, override, string, string, testplan, util

The JMeter LongSum.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.functions;

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

import org.apache.jmeter.engine.util.CompoundVariable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.samplers.Sampler;
import org.apache.jmeter.threads.JMeterVariables;
import org.apache.jmeter.util.JMeterUtils;

/**
 * Provides a longSum function that adds two or more long values.
 * @see IntSum
 */
public class LongSum extends AbstractFunction {

    private static final List<String> desc = new LinkedList();

    private static final String KEY = "__longSum"; //$NON-NLS-1$

    static {
        desc.add(JMeterUtils.getResString("longsum_param_1")); //$NON-NLS-1$
        desc.add(JMeterUtils.getResString("longsum_param_2")); //$NON-NLS-1$
        desc.add(JMeterUtils.getResString("function_name_paropt")); //$NON-NLS-1$
    }

    private Object[] values;

    /**
     * No-arg constructor.
     */
    public LongSum() {
    }

    /** {@inheritDoc} */
    @Override
    public synchronized String execute(SampleResult previousResult, Sampler currentSampler)
            throws InvalidVariableException {

        JMeterVariables vars = getVariables();

        long sum = 0;
        String varName = ((CompoundVariable) values[values.length - 1]).execute().trim();

        for (int i = 0; i < values.length - 1; i++) {
            sum += Long.parseLong(((CompoundVariable) values[i]).execute());
        }

        try {
            sum += Long.parseLong(varName);
            varName = null; // there is no variable name
        } catch (NumberFormatException ignored) {
        }

        String totalString = Long.toString(sum);
        if (vars != null && varName != null && varName.length() > 0){// vars will be null on TestPlan
            vars.put(varName, totalString);
        }

        return totalString;

    }

    /** {@inheritDoc} */
    @Override
    public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException {
        checkMinParameterCount(parameters, 2);
        values = parameters.toArray();
    }

    /** {@inheritDoc} */
    @Override
    public String getReferenceKey() {
        return KEY;
    }

    /** {@inheritDoc} */
    public List<String> getArgumentDesc() {
        return desc;
    }
}