// $Header: /home/cvs/jakarta-jmeter/src/core/org/apache/jmeter/engine/util/ValueTransformer.java,v 1.4 2004/02/14 03:34:28 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.
 * 
*/

/*
 * Created on May 4, 2003
 */
package org.apache.jmeter.engine.util;

import java.util.Map;

import org.apache.jmeter.functions.InvalidVariableException;
import org.apache.jmeter.testelement.property.JMeterProperty;

/**
 * @author ano ano
 *
 * @version $Revision: 1.4 $
 */
interface ValueTransformer
{
    /**
     * Transform the given property and return the new version.
     * @param property
     * @return the transformed property
     */
    public JMeterProperty transformValue(JMeterProperty property)
        throws InvalidVariableException;
    
    /**
     * Set the master function for the value transformer.  This handles
     * converting strings to functions.
     * @param masterFunction
     */
    public void setMasterFunction(CompoundVariable masterFunction);
    
    /**
     * Set the variable names and values used to reverse replace functions
     * with strings, and undo functions to raw values.
     * @param vars
     */
    public void setVariables(Map vars);
}