JMeter example source code file (ComparisonVisualizer.java)

This example JMeter source code file (ComparisonVisualizer.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

awt, compareassertionresult, defaultmutabletreenode, defaultmutabletreenode, defaulttreemodel, event, gridlayout, gui, jcomponent, jpanel, jscrollpane, jscrollpane, jtextpane, jtextpane, jtree, jtree, non-nls-1, non-nls-1, swing, tree

The JMeter ComparisonVisualizer.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.visualizers;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;

import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import org.apache.jmeter.assertions.AssertionResult;
import org.apache.jmeter.assertions.CompareAssertionResult;
import org.apache.jmeter.samplers.Clearable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jmeter.visualizers.gui.AbstractVisualizer;

public class ComparisonVisualizer extends AbstractVisualizer implements Clearable {
    private static final long serialVersionUID = 240L;

    private JTree resultsTree;

    private DefaultTreeModel treeModel;

    private DefaultMutableTreeNode root;

    private JTextPane base, secondary;

    public ComparisonVisualizer() {
        super();
        init();
    }

    public void add(SampleResult sample) {

        DefaultMutableTreeNode currNode = new DefaultMutableTreeNode(sample);
        treeModel.insertNodeInto(currNode, root, root.getChildCount());
        if (root.getChildCount() == 1) {
            resultsTree.expandPath(new TreePath(root));
        }
    }

    public String getLabelResource() {
        return "comparison_visualizer_title"; //$NON-NLS-1$
    }

    private void init() {
        setLayout(new BorderLayout());
        setBorder(makeBorder());
        add(makeTitlePanel(), BorderLayout.NORTH);
        JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
        split.add(getTreePanel());
        split.add(getSideBySidePanel());
        add(split, BorderLayout.CENTER);
    }

    private JComponent getSideBySidePanel() {
        JPanel main = new JPanel(new GridLayout(1, 2));
        JScrollPane base = new JScrollPane(getBaseTextPane());
        base.setPreferredSize(base.getMinimumSize());
        JScrollPane secondary = new JScrollPane(getSecondaryTextPane());
        secondary.setPreferredSize(secondary.getMinimumSize());
        main.add(base);
        main.add(secondary);
        main.setPreferredSize(main.getMinimumSize());
        return main;
    }

    private JTextPane getBaseTextPane() {
        base = new JTextPane();
        base.setEditable(false);
        base.setBackground(getBackground());
        return base;
    }

    private JTextPane getSecondaryTextPane() {
        secondary = new JTextPane();
        secondary.setEditable(false);
        return secondary;
    }

    private JComponent getTreePanel() {
        root = new DefaultMutableTreeNode("Root"); //$NON-NLS-1$
        treeModel = new DefaultTreeModel(root);
        resultsTree = new JTree(treeModel);
        resultsTree.setCellRenderer(new TreeNodeRenderer());
        resultsTree.setCellRenderer(new TreeNodeRenderer());
        resultsTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
        resultsTree.addTreeSelectionListener(new Selector());
        resultsTree.setRootVisible(false);
        resultsTree.setShowsRootHandles(true);

        JScrollPane treePane = new JScrollPane(resultsTree);
        treePane.setPreferredSize(new Dimension(150, 50));
        JPanel panel = new JPanel(new GridLayout(1, 1));
        panel.add(treePane);
        return panel;
    }

    private class Selector implements TreeSelectionListener {
        /**
         * {@inheritDoc}
         */
        public void valueChanged(TreeSelectionEvent e) {
            try {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) resultsTree.getLastSelectedPathComponent();
                SampleResult sr = (SampleResult) node.getUserObject();
                AssertionResult[] results = sr.getAssertionResults();
                CompareAssertionResult result = null;
                for (AssertionResult r : results) {
                    if (r instanceof CompareAssertionResult) {
                        result = (CompareAssertionResult) r;
                        break;
                    }
                }
                if (result == null)
                    result = new CompareAssertionResult(getName());
                base.setText(result.getBaseResult());
                secondary.setText(result.getSecondaryResult());
            } catch (Exception err) {
                base.setText(JMeterUtils.getResString("comparison_invalid_node") + err); //$NON-NLS-1$
                secondary.setText(JMeterUtils.getResString("comparison_invalid_node") + err); //$NON-NLS-1$
            }
            base.setCaretPosition(0);
            secondary.setCaretPosition(0);
        }
    }

    public void clearData() {
        while (root.getChildCount() > 0) {
            // the child to be removed will always be 0 'cos as the nodes are
            // removed the nth node will become (n-1)th
            treeModel.removeNodeFromParent((DefaultMutableTreeNode) root.getChildAt(0));
            base.setText(""); //$NON-NLS-1$
            secondary.setText(""); //$NON-NLS-1$
        }
    }

}