/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* 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.core.context.stmt;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.collection.ArrayWrap;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.epl.expression.ExprPreviousEvalStrategy;
import java.util.Collection;
public class AIRegistryPreviousMultiPerm implements AIRegistryPrevious, ExprPreviousEvalStrategy {
private final ArrayWrap<ExprPreviousEvalStrategy> strategies;
private int count;
public AIRegistryPreviousMultiPerm() {
strategies = new ArrayWrap<ExprPreviousEvalStrategy>(ExprPreviousEvalStrategy.class, 10);
}
public void assignService(int num, ExprPreviousEvalStrategy value) {
if (num > strategies.getArray().length - 1) {
strategies.expand(100);
}
strategies.getArray()[num] = value;
count++;
}
public void deassignService(int num) {
strategies.getArray()[num] = null;
count--;
}
public int getAgentInstanceCount() {
return count;
}
public Object evaluate(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext) {
int agentInstanceId = exprEvaluatorContext.getAgentInstanceIds()[0];
ExprPreviousEvalStrategy strategy = strategies.getArray()[agentInstanceId];
return strategy.evaluate(eventsPerStream, exprEvaluatorContext);
}
public Collection<EventBean> evaluateGetCollEvents(EventBean[] eventsPerStream, ExprEvaluatorContext context) {
int agentInstanceId = context.getAgentInstanceIds()[0];
ExprPreviousEvalStrategy strategy = strategies.getArray()[agentInstanceId];
return strategy.evaluateGetCollEvents(eventsPerStream, context);
}
public Collection evaluateGetCollScalar(EventBean[] eventsPerStream, ExprEvaluatorContext context) {
int agentInstanceId = context.getAgentInstanceIds()[0];
ExprPreviousEvalStrategy strategy = strategies.getArray()[agentInstanceId];
return strategy.evaluateGetCollScalar(eventsPerStream, context);
}
public EventBean evaluateGetEventBean(EventBean[] eventsPerStream, ExprEvaluatorContext context) {
int agentInstanceId = context.getAgentInstanceIds()[0];
ExprPreviousEvalStrategy strategy = strategies.getArray()[agentInstanceId];
return strategy.evaluateGetEventBean(eventsPerStream, context);
}
}