JMeter example source code file (UserParameterXMLContentHandler.java)

This example JMeter source code file (UserParameterXMLContentHandler.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

attributes, chararraywriter, contenthandler, hashmap, hashmap, io, linkedlist, list, list, map, sax, saxexception, saxexception, string, string, userparameterxmlcontenthandler, util

The JMeter UserParameterXMLContentHandler.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.protocol.http.modifier;

import java.io.CharArrayWriter;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;

/**
 * The handler used to read in XML parameter data.
 *
 * @version $Revision: 810036 $
 */
public class UserParameterXMLContentHandler implements ContentHandler {
    // -------------------------------------------
    // Constants and Data Members
    // -------------------------------------------

    // Note UserParameterXML accesses this variable
    // to obtain the Set data via method getParsedParameters()
    private List<Map userThreads = new LinkedList>();

    private String paramname = "";

    private String paramvalue = "";

    private Map<String, String> nameValuePair = new HashMap();

    /** Buffer for collecting data from the "characters" SAX event. */
    private CharArrayWriter contents = new CharArrayWriter();

    // -------------------------------------------
    // Methods
    // -------------------------------------------

    /*-------------------------------------------------------------------------
     * Methods implemented from org.xml.sax.ContentHandler
     *----------------------------------------------------------------------- */
    public void setDocumentLocator(Locator locator) {
    }

    public void startDocument() throws SAXException {
    }

    public void endDocument() throws SAXException {
    }

    public void startPrefixMapping(String prefix, String uri) throws SAXException {
    }

    public void endPrefixMapping(String prefix) throws SAXException {
    }

    public void startElement(String namespaceURL, String localName, String qName, Attributes atts) throws SAXException {

        contents.reset();

        // haven't got to reset paramname & paramvalue
        // but did it to keep the code looking correct
        if (qName.equals("parameter")) {
            paramname = "";
            paramvalue = "";
        }

        // must create a new object,
        // or else end up with a set full of the same Map object
        if (qName.equals("thread")) {
            nameValuePair = new HashMap<String, String>();
        }

    }

    public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
        if (qName.equals("paramname")) {
            paramname = contents.toString();
        }
        if (qName.equals("paramvalue")) {
            paramvalue = contents.toString();
        }
        if (qName.equals("parameter")) {
            nameValuePair.put(paramname, paramvalue);
        }
        if (qName.equals("thread")) {
            userThreads.add(nameValuePair);
        }
    }

    public void characters(char ch[], int start, int length) throws SAXException {
        contents.write(ch, start, length);
    }

    public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
    }

    public void processingInstruction(String target, String date) throws SAXException {
    }

    public void skippedEntity(String name) throws SAXException {
    }

    /*-------------------------------------------------------------------------
     * Methods (used by UserParameterXML to get XML parameters from XML file)
     *----------------------------------------------------------------------- */

    /**
     * results of parsing all user parameter data defined in XML file.
     *
     * @return all users name value pairs obtained from XML file
     */
    public List<Map getParsedParameters() {
        return userThreads;
    }
}