/*! ******************************************************************************
*
* 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.analyticquery;
import java.util.concurrent.ConcurrentLinkedQueue;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.trans.step.BaseStepData;
import org.pentaho.di.trans.step.StepDataInterface;
/**
* @author ngoodman
* @since 27-jan-2009
*
*/
public class AnalyticQueryData extends BaseStepData implements StepDataInterface {
// Grouped Field Indexes (faster than looking up by strings)
public int[] groupnrs;
public RowMetaInterface inputRowMeta;
public RowMetaInterface outputRowMeta;
// Two Integers for our processing
// Window Size (the largest N we need to skip forward/back)
public int window_size;
// Queue Size (the size of our data queue (Window Size * 2 ) + 1)
public int queue_size;
// / Queue Cursor (the current processing location in the queue) reset with every group
public int queue_cursor;
// Queue for keeping the data. We will push data onto the queue
// and pop it off as we process rows. The queue of data is required
// to get the second previous row and the second ahead row, etc.
public ConcurrentLinkedQueue<Object[]> data;
public Object[] previous;
public AnalyticQueryData() {
super();
}
}