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JMeter example source code file (FunctionHelper.java)

This example JMeter source code file (FunctionHelper.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

arguments, awt, class, class, event, function, gui, helplistener, illegalaccessexception, instantiationexception, io, jbutton, jpanel, jpanel, non-nls-1, non-nls-1, string, string, swing, util

The JMeter FunctionHelper.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.gui;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.apache.jmeter.config.Argument;
import org.apache.jmeter.config.Arguments;
import org.apache.jmeter.config.gui.ArgumentsPanel;
import org.apache.jmeter.functions.Function;
import org.apache.jmeter.gui.action.ActionRouter;
import org.apache.jmeter.gui.action.Help;
import org.apache.jmeter.testelement.property.PropertyIterator;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.gui.ComponentUtil;
import org.apache.jorphan.gui.JLabeledChoice;
import org.apache.jorphan.gui.JLabeledTextField;
import org.apache.jorphan.reflect.ClassFinder;

public class FunctionHelper extends JDialog implements ActionListener, ChangeListener {
    private static final long serialVersionUID = 240L;

    private JLabeledChoice functionList;

    private ArgumentsPanel parameterPanel;

    private JLabeledTextField cutPasteFunction;

    // Not modified after initial setup
    private final Map<String, Class functionMap = new HashMap>();

    private JButton generateButton;

    public FunctionHelper() {
        super((JFrame) null, JMeterUtils.getResString("function_helper_title"), false); //$NON-NLS-1$
        init();
    }

    private void init() {
        parameterPanel = new ArgumentsPanel(JMeterUtils.getResString("function_params")); //$NON-NLS-1$
        initializeFunctionList();
        this.getContentPane().setLayout(new BorderLayout(10, 10));
        JPanel comboPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
        comboPanel.add(functionList);
        JButton helpButton = new JButton(JMeterUtils.getResString("help")); //$NON-NLS-1$
        helpButton.addActionListener(new HelpListener());
        comboPanel.add(helpButton);
        this.getContentPane().add(comboPanel, BorderLayout.NORTH);
        this.getContentPane().add(parameterPanel, BorderLayout.CENTER);
        JPanel resultsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
        cutPasteFunction = new JLabeledTextField(JMeterUtils.getResString("cut_paste_function"), 35); //$NON-NLS-1$
        resultsPanel.add(cutPasteFunction);
        generateButton = new JButton(JMeterUtils.getResString("generate")); //$NON-NLS-1$
        generateButton.addActionListener(this);
        resultsPanel.add(generateButton);
        this.getContentPane().add(resultsPanel, BorderLayout.SOUTH);
        this.pack();
        ComponentUtil.centerComponentInWindow(this);
    }

    private void initializeFunctionList() {
        try {
            List<String> functionClasses = ClassFinder.findClassesThatExtend(JMeterUtils.getSearchPaths(),
                    new Class[] { Function.class }, true);
            Iterator<String> iter = functionClasses.iterator();
            String[] functionNames = new String[functionClasses.size()];
            int count = 0;
            while (iter.hasNext()) {
                Class<?> cl = Class.forName(iter.next());
                functionNames[count] = ((Function) cl.newInstance()).getReferenceKey();
                functionMap.put(functionNames[count], cl);
                count++;
            }
            functionList = new JLabeledChoice(JMeterUtils.getResString("choose_function"), functionNames); //$NON-NLS-1$
            functionList.addChangeListener(this);
        } catch (IOException e) {
        } catch (ClassNotFoundException e) {
        } catch (InstantiationException e) {
        } catch (IllegalAccessException e) {
        }
    }

    public void stateChanged(ChangeEvent event) {
        try {
            Arguments args = new Arguments();
            Function function = (Function) ((Class<?>) functionMap.get(functionList.getText())).newInstance();
            List<String> argumentDesc = function.getArgumentDesc();
            Iterator<String> iter = argumentDesc.iterator();
            while (iter.hasNext()) {
                String help = iter.next();
                args.addArgument(help, ""); //$NON-NLS-1$
            }
            parameterPanel.configure(args);
            parameterPanel.revalidate();
            getContentPane().remove(parameterPanel);
            this.pack();
            getContentPane().add(parameterPanel, BorderLayout.CENTER);
            this.pack();
            this.validate();
            this.repaint();
        } catch (InstantiationException e) {
        } catch (IllegalAccessException e) {
        }
    }

    public void actionPerformed(ActionEvent e) {
        StringBuilder functionCall = new StringBuilder("${");
        functionCall.append(functionList.getText());
        Arguments args = (Arguments) parameterPanel.createTestElement();
        if (args.getArguments().size() > 0) {
            functionCall.append("(");
            PropertyIterator iter = args.iterator();
            boolean first = true;
            while (iter.hasNext()) {
                Argument arg = (Argument) iter.next().getObjectValue();
                if (!first) {
                    functionCall.append(",");
                }
                functionCall.append(arg.getValue());
                first = false;
            }
            functionCall.append(")");
        }
        functionCall.append("}");
        cutPasteFunction.setText(functionCall.toString());
    }

    private class HelpListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            String[] source = new String[] { Help.HELP_FUNCTIONS, functionList.getText() };
            ActionEvent helpEvent = new ActionEvent(source, e.getID(), "help"); //$NON-NLS-1$
            ActionRouter.getInstance().actionPerformed(helpEvent);
        }
    }
}

Other JMeter examples (source code examples)

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