DummyTrans.java

/*! ******************************************************************************
 *
 * 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.steps.dummytrans;

import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.BaseStep;
import org.pentaho.di.trans.step.StepDataInterface;
import org.pentaho.di.trans.step.StepInterface;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.trans.step.StepMetaInterface;

/**
 * Do nothing. Pass all input data to the next steps.
 *
 * @author Matt
 * @since 2-jun-2003
 */
public class DummyTrans extends BaseStep implements StepInterface {
  private static Class<?> PKG = DummyTransMeta.class; // for i18n purposes, needed by Translator2!!

  public DummyTrans( StepMeta stepMeta, StepDataInterface stepDataInterface, int copyNr, TransMeta transMeta,
    Trans trans ) {
    super( stepMeta, stepDataInterface, copyNr, transMeta, trans );
  }

  public boolean processRow( StepMetaInterface smi, StepDataInterface sdi ) throws KettleException {
    Object[] r = getRow(); // get row, set busy!
    // no more input to be expected...
    if ( r == null ) {
      setOutputDone();
      return false;
    }

    putRow( getInputRowMeta(), r ); // copy row to possible alternate rowset(s).

    if ( checkFeedback( getLinesRead() ) ) {
      if ( log.isBasic() ) {
        logBasic( BaseMessages.getString( PKG, "DummyTrans.Log.LineNumber" ) + getLinesRead() );
      }
    }

    return true;
  }
}