| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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.io.Serializable; |
| import java.util.Collection; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.commons.jexl.Expression; |
| import org.apache.commons.jexl.ExpressionFactory; |
| import org.apache.commons.jexl.JexlContext; |
| import org.apache.commons.jexl.JexlHelper; |
| import org.apache.jmeter.engine.util.CompoundVariable; |
| import org.apache.jmeter.samplers.SampleResult; |
| import org.apache.jmeter.samplers.Sampler; |
| import org.apache.jorphan.logging.LoggingManager; |
| import org.apache.log.Logger; |
| |
| /** |
| * A function which understands Commons JEXL. <br> |
| * |
| * The following variables are set before the script is executed: <br> |
| * <ul> |
| * <li>ctx - the current JMeter context variable</li> |
| * <li>vars - the current JMeter variables</li> |
| * <li>threadName - the threadName</li> |
| * <li>sampler - the current Sampler, if any</li> |
| * <li>sampleResult - the current SampleResult, if any</li> |
| * </ul> |
| */ |
| public class Jexl extends AbstractFunction implements Serializable |
| { |
| /** |
| * <code>serialVersionUID</code> |
| */ |
| private static final long serialVersionUID = 3546359539474968625L; |
| |
| private static Logger log = LoggingManager.getLoggerForClass(); |
| |
| private static final String KEY = "__jexl"; |
| |
| private static final List desc = new LinkedList(); |
| |
| static |
| { |
| desc.add("expression"); |
| } |
| |
| private Object[] values; |
| |
| public String execute(SampleResult result, Sampler sampler) |
| throws InvalidVariableException |
| { |
| String str = ""; |
| |
| CompoundVariable var = (CompoundVariable) values[0]; |
| String exp = var.getRawParameters(); |
| |
| try |
| { |
| Expression e = ExpressionFactory.createExpression(exp); |
| JexlContext jc = JexlHelper.createContext(); |
| jc.getVars().put("ctx", sampler.getThreadContext()); |
| jc.getVars().put("vars", getVariables()); |
| jc.getVars().put("threadName", sampler.getThreadName()); |
| jc.getVars().put("sampler", sampler); |
| jc.getVars().put("sampleResult", result); |
| |
| // Now evaluate the expression, getting the result |
| Object o = e.evaluate(jc); |
| if (o != null) |
| { |
| str = o.toString(); |
| } |
| } catch (Exception e) |
| { |
| log.error("An error occurred while evaluating the expression \"" |
| + exp + "\""); |
| } |
| return str; |
| } |
| |
| public List getArgumentDesc() |
| { |
| return desc; |
| } |
| |
| public String getReferenceKey() |
| { |
| return KEY; |
| } |
| |
| public void setParameters(Collection parameters) |
| throws InvalidVariableException |
| { |
| values = parameters.toArray(); |
| if (values.length != 1) |
| { |
| throw new InvalidVariableException("it only accepts one parameter"); |
| } |
| } |
| |
| } |