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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *   http://www.apache.org/licenses/LICENSE-2.0
   10    *
   11    * Unless required by applicable law or agreed to in writing, software
   12    * distributed under the License is distributed on an "AS IS" BASIS,
   13    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   14    * See the License for the specific language governing permissions and
   15    * limitations under the License.
   16    *
   17    */
   18   
   19   package org.apache.jmeter.functions;
   20   
   21   import java.util.Collection;
   22   import java.util.LinkedList;
   23   import java.util.List;
   24   
   25   import org.apache.jmeter.samplers.SampleResult;
   26   import org.apache.jmeter.samplers.Sampler;
   27   
   28   /**
   29    * Function to return the current thread number.
   30    */
   31   public class ThreadNumber extends AbstractFunction {
   32   
   33       private static final String KEY = "__threadNum"; //$NON-NLS-1$
   34   
   35       private static final List desc = new LinkedList();
   36   
   37       /*
   38        * (non-Javadoc)
   39        *
   40        * @see org.apache.jmeter.functions.Function#execute(SampleResult, Sampler)
   41        */
   42       public String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException {
   43           return Thread.currentThread().getName().substring(Thread.currentThread().getName().lastIndexOf("-") + 1); //$NON-NLS-1$
   44       }
   45   
   46       /*
   47        * (non-Javadoc)
   48        *
   49        * @see org.apache.jmeter.functions.Function#setParameters(Collection)
   50        */
   51       public void setParameters(Collection parameters) throws InvalidVariableException {
   52           checkParameterCount(parameters,0,0);
   53       }
   54   
   55       /*
   56        * (non-Javadoc)
   57        *
   58        * @see org.apache.jmeter.functions.Function#getReferenceKey()
   59        */
   60       public String getReferenceKey() {
   61           return KEY;
   62       }
   63   
   64       /*
   65        * (non-Javadoc)
   66        *
   67        * @see org.apache.jmeter.functions.Function#getArgumentDesc()
   68        */
   69       public List getArgumentDesc() {
   70           return desc;
   71       }
   72   }

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