/*
***************************************************************************************
* 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.core;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
/**
* Interface for processors of select-clause items, implementors are computing results based on matching events.
*/
public class SelectExprProcessorWDeliveryCallback implements SelectExprProcessor {
private final EventType eventType;
private final BindProcessor bindProcessor;
private final SelectExprProcessorDeliveryCallback selectExprProcessorCallback;
public SelectExprProcessorWDeliveryCallback(EventType eventType, BindProcessor bindProcessor, SelectExprProcessorDeliveryCallback selectExprProcessorCallback) {
this.eventType = eventType;
this.bindProcessor = bindProcessor;
this.selectExprProcessorCallback = selectExprProcessorCallback;
}
public EventType getResultEventType() {
return eventType;
}
public EventBean process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext) {
Object[] columns = bindProcessor.process(eventsPerStream, isNewData, exprEvaluatorContext);
return selectExprProcessorCallback.selected(columns);
}
}