/*! ******************************************************************************
*
* 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.core;
import java.util.concurrent.TimeUnit;
import org.pentaho.di.core.row.RowMetaInterface;
/**
* A simplified rowset for steps that always only need to only have a single row on input...
*
* @author matt
*/
public class SingleRowRowSet extends BaseRowSet implements Comparable<RowSet>, RowSet {
private Object[] row;
@Override
public Object[] getRow() {
Object[] retRow = row;
row = null;
return retRow;
}
@Override
public Object[] getRowImmediate() {
return getRow();
}
@Override
public Object[] getRowWait( long timeout, TimeUnit tu ) {
return getRow();
}
@Override
public boolean putRow( RowMetaInterface rowMeta, Object[] rowData ) {
this.rowMeta = rowMeta;
this.row = rowData;
return true;
}
@Override
public boolean putRowWait( RowMetaInterface rowMeta, Object[] rowData, long time, TimeUnit tu ) {
return putRow( rowMeta, rowData );
}
@Override
public int size() {
return row == null ? 0 : 1;
}
@Override
public void clear() {
row = null;
done.set( false );
}
}