/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.epl.agg.access;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.epl.table.mgmt.TableMetadata;
/**
* Represents the aggregation accessor that provides the result for the "maxBy" aggregation function.
*/
public class AggregationAccessorMinMaxByTable extends AggregationAccessorMinMaxByBase {
private final TableMetadata tableMetadata;
public AggregationAccessorMinMaxByTable(boolean max, TableMetadata tableMetadata) {
super(max);
this.tableMetadata = tableMetadata;
}
public Object getValue(AggregationState state, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
EventBean event = getEnumerableEvent(state, eventsPerStream, isNewData, context);
if (event == null) {
return null;
}
return tableMetadata.getEventToPublic().convertToUnd(event, eventsPerStream, isNewData, context);
}
}