/*
***************************************************************************************
* 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.view;
import com.espertech.esper.client.EventType;
import com.espertech.esper.core.context.util.AgentInstanceContext;
import com.espertech.esper.core.service.StatementContext;
import com.espertech.esper.epl.core.ResultSetProcessor;
import com.espertech.esper.epl.core.ResultSetProcessorHelperFactory;
import com.espertech.esper.epl.expression.time.ExprTimePeriod;
import com.espertech.esper.event.EventBeanReader;
import com.espertech.esper.event.EventBeanReaderDefaultImpl;
import com.espertech.esper.event.EventTypeSPI;
/**
* Output process view that does not enforce any output policies and may simply
* hand over events to child views, but works with distinct and after-output policies
*/
public class OutputProcessViewDirectDistinctOrAfterFactory extends OutputProcessViewDirectFactory {
private final boolean isDistinct;
protected final ExprTimePeriod afterTimePeriod;
protected final Integer afterConditionNumberOfEvents;
private EventBeanReader eventBeanReader;
public OutputProcessViewDirectDistinctOrAfterFactory(StatementContext statementContext, OutputStrategyPostProcessFactory postProcessFactory, ResultSetProcessorHelperFactory resultSetProcessorHelperFactory, boolean distinct, ExprTimePeriod afterTimePeriod, Integer afterConditionNumberOfEvents, EventType resultEventType) {
super(statementContext, postProcessFactory, resultSetProcessorHelperFactory);
isDistinct = distinct;
this.afterTimePeriod = afterTimePeriod;
this.afterConditionNumberOfEvents = afterConditionNumberOfEvents;
if (isDistinct) {
if (resultEventType instanceof EventTypeSPI) {
EventTypeSPI eventTypeSPI = (EventTypeSPI) resultEventType;
eventBeanReader = eventTypeSPI.getReader();
}
if (eventBeanReader == null) {
eventBeanReader = new EventBeanReaderDefaultImpl(resultEventType);
}
}
}
@Override
public OutputProcessViewBase makeView(ResultSetProcessor resultSetProcessor, AgentInstanceContext agentInstanceContext) {
boolean isAfterConditionSatisfied = true;
Long afterConditionTime = null;
if (afterConditionNumberOfEvents != null) {
isAfterConditionSatisfied = false;
} else if (afterTimePeriod != null) {
isAfterConditionSatisfied = false;
long delta = afterTimePeriod.nonconstEvaluator().deltaUseEngineTime(null, agentInstanceContext);
afterConditionTime = agentInstanceContext.getStatementContext().getTimeProvider().getTime() + delta;
}
if (super.postProcessFactory == null) {
return new OutputProcessViewDirectDistinctOrAfter(resultSetProcessorHelperFactory, agentInstanceContext, resultSetProcessor, afterConditionTime, afterConditionNumberOfEvents, isAfterConditionSatisfied, this);
}
OutputStrategyPostProcess postProcess = postProcessFactory.make(agentInstanceContext);
return new OutputProcessViewDirectDistinctOrAfterPostProcess(resultSetProcessorHelperFactory, agentInstanceContext, resultSetProcessor, afterConditionTime, afterConditionNumberOfEvents, isAfterConditionSatisfied, this, postProcess);
}
public boolean isDistinct() {
return isDistinct;
}
public EventBeanReader getEventBeanReader() {
return eventBeanReader;
}
}