/*
***************************************************************************************
* 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.expression.subquery;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.epl.table.mgmt.TableMetadata;
import com.espertech.esper.event.EventBeanUtility;
import java.util.Collection;
public class SubselectEvalStrategyRowFilteredUnselectedTable extends SubselectEvalStrategyRowFilteredUnselected {
private final TableMetadata tableMetadata;
public SubselectEvalStrategyRowFilteredUnselectedTable(TableMetadata tableMetadata) {
this.tableMetadata = tableMetadata;
}
@Override
public Object evaluate(EventBean[] eventsPerStream, boolean newData, Collection<EventBean> matchingEvents, ExprEvaluatorContext exprEvaluatorContext, ExprSubselectRowNode parent) {
EventBean[] eventsZeroBased = EventBeanUtility.allocatePerStreamShift(eventsPerStream);
EventBean subSelectResult = ExprSubselectRowNodeUtility.evaluateFilterExpectSingleMatch(eventsZeroBased, newData, matchingEvents, exprEvaluatorContext, parent);
if (subSelectResult == null) {
return null;
}
return tableMetadata.getEventToPublic().convertToUnd(subSelectResult, eventsPerStream, newData, exprEvaluatorContext);
}
}