Java Code Examples for org.pentaho.di.trans.Trans#findBaseSteps()

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Example 1
Source File: MappingIT.java    From pentaho-kettle with Apache License 2.0 6 votes vote down vote up 
/**
 * This method runs transformations related to PDI-13545.<br/> The scenario is the following: there are two step
 * generating data, the latter of which is a Mapping step. They are followed with a Join Rows step, that has two
 * copies. The last in a row is a Dummy step, named "Last". Since both generating steps output 3 rows ([10, 20, 30]
 * and [1, 2, 3] respectively), the last step must obtain 3*3=9 rows.
 *
 * @param transPath a path to transformation file
 * @throws Exception
 */
private void runTransWhenMappingsIsFollowedByCopiedStep( String transPath ) throws Exception {
  KettleEnvironment.init();

  TransMeta transMeta = new TransMeta( transPath );
  transMeta.setTransformationType( TransMeta.TransformationType.Normal );

  Trans trans = new Trans( transMeta );
  trans.prepareExecution( null );
  trans.startThreads();
  trans.waitUntilFinished();

  assertEquals( 0, trans.getErrors() );

  List<StepInterface> list = trans.findBaseSteps( "Last" );
  assertEquals( 1, list.size() );
  assertEquals( 9, list.get( 0 ).getLinesRead() );
}
Example 2
Source File: TransDebugMeta.java    From pentaho-kettle with Apache License 2.0 6 votes vote down vote up 
public synchronized void addRowListenersToTransformation( final Trans trans ) {

    final TransDebugMeta self = this;

    // for every step in the map, add a row listener...
    //
    for ( final Map.Entry<StepMeta, StepDebugMeta> entry : stepDebugMetaMap.entrySet() ) {
      final StepMeta stepMeta = entry.getKey();
      final StepDebugMeta stepDebugMeta = entry.getValue();

      // What is the transformation thread to attach a listener to?
      //
      for ( StepInterface baseStep : trans.findBaseSteps( stepMeta.getName() ) ) {
        baseStep.addRowListener( new RowAdapter() {
          public void rowWrittenEvent( RowMetaInterface rowMeta, Object[] row ) throws KettleStepException {
            rowWrittenEventHandler( rowMeta, row, stepDebugMeta, trans, self );
          }
        } );
      }
    }
  }