/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* 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.pentaho.di.trans.step;
import org.pentaho.di.trans.Trans;
/**
* This listener informs the audience of the various states of a step.
*
* @author matt
*
*/
public interface StepListener {
/**
* This method is called when a step goes from being idle to being active.
*
* @param trans
* @param stepMeta
* @param step
*/
public void stepActive( Trans trans, StepMeta stepMeta, StepInterface step );
/**
* This method is called when a step completes all work and is finished.
*
* @param trans
* @param stepMeta
* @param step
*/
public void stepFinished( Trans trans, StepMeta stepMeta, StepInterface step );
}