| /* |
| * 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; |
| |
| |
| 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 Variable |
| * |
| * Parameters: |
| * - variable name |
| * |
| * Returns: |
| * - the variable value, but if not found |
| * - the variable name itself |
| * @since 2.3RC3 |
| */ |
| public class Variable extends AbstractFunction { |
| |
| private static final List<String> desc = new LinkedList<>(); |
| |
| private static final String KEY = "__V"; //$NON-NLS-1$ |
| |
| // Number of parameters expected - used to reject invalid calls |
| private static final int MIN_PARAMETER_COUNT = 1; |
| private static final int MAX_PARAMETER_COUNT = 1; |
| |
| static { |
| desc.add(JMeterUtils.getResString("variable_name_param")); //$NON-NLS-1$ |
| } |
| |
| private Object[] values; |
| |
| public Variable() { |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String execute(SampleResult previousResult, Sampler currentSampler) |
| throws InvalidVariableException { |
| String variableName = ((CompoundVariable) values[0]).execute(); |
| String variableValue = getVariables().get(variableName); |
| return variableValue == null? variableName : variableValue; |
| |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { |
| checkParameterCount(parameters, MIN_PARAMETER_COUNT, MAX_PARAMETER_COUNT); |
| values = parameters.toArray(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String getReferenceKey() { |
| return KEY; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public List<String> getArgumentDesc() { |
| return desc; |
| } |
| |
| } |