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The source code// $Header: /home/cvs/jakarta-jmeter/src/functions/org/apache/jmeter/functions/Property2.java,v 1.4 2004/03/30 18:07:07 sebb Exp $ /* * Copyright 2003-2004 The Apache Software Foundation. * * Licensed 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.io.Serializable; 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.util.JMeterUtils; /** * Function to get a JMeter property, or a default. * Does not offer the option to store the value, as it is just as easy * to refetch it. * This is a specialisation of the __property() function to make it * simpler to use for ThreadGroup GUI etc. The name is also shorter. * * Parameters: * - property name * - default value (optional; defaults to "1") * * Usage: * * Define the property in jmeter.properties, or on the command-line: * java ... -Jpropname=value * * Retrieve the value in the appropriate GUI by using the string: * ${__P(propname)} * $(__P(propname,default)} * * Returns: * - the property value, but if not found * - the default value, but if not present * - "1" (suitable for use in ThreadGroup GUI) * * @version $Revision: 1.4 $ Updated: $Date: 2004/03/30 18:07:07 $ */ public class Property2 extends AbstractFunction implements Serializable { private static final List desc = new LinkedList(); private static final String KEY = "__P"; // Number of parameters expected - used to reject invalid calls private static final int MIN_PARAMETER_COUNT = 1; private static final int MAX_PARAMETER_COUNT = 2; static { desc.add(JMeterUtils.getResString("property_name_param")); desc.add(JMeterUtils.getResString("property_default_param")); } private Object[] values; public Property2() { } public Object clone() { return new Property2(); } public synchronized String execute( SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException { String propertyName = ((CompoundVariable) values[0]).execute(); String propertyDefault = "1"; //$NON-NLS-1$ if (values.length > 1){ // We have a default propertyDefault= ((CompoundVariable) values[1]).execute(); } String propertyValue = JMeterUtils.getPropDefault(propertyName, propertyDefault); return propertyValue; } public void setParameters(Collection parameters) throws InvalidVariableException { values = parameters.toArray(); if ((values.length < MIN_PARAMETER_COUNT) || (values.length > MAX_PARAMETER_COUNT)) { throw new InvalidVariableException( "Parameter Count not between " + MIN_PARAMETER_COUNT + " & " + MAX_PARAMETER_COUNT); } } public String getReferenceKey() { return KEY; } public List getArgumentDesc() { return desc; } } |
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