/*
***************************************************************************************
* 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.eval;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.core.SelectExprProcessor;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.epl.expression.core.ExprValidationException;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.event.WrapperEventType;
import com.espertech.esper.util.JavaClassHelper;
import java.util.Collections;
public class EvalInsertBeanWrapRecast implements SelectExprProcessor {
private final WrapperEventType eventType;
private final EventAdapterService eventAdapterService;
private final int streamNumber;
public EvalInsertBeanWrapRecast(WrapperEventType targetType, EventAdapterService eventAdapterService, int streamNumber, EventType[] typesPerStream)
throws ExprValidationException {
this.eventType = targetType;
this.eventAdapterService = eventAdapterService;
this.streamNumber = streamNumber;
EventType sourceType = typesPerStream[streamNumber];
Class sourceClass = sourceType.getUnderlyingType();
Class targetClass = targetType.getUnderlyingEventType().getUnderlyingType();
if (!JavaClassHelper.isSubclassOrImplementsInterface(sourceClass, targetClass)) {
throw EvalInsertUtil.makeEventTypeCastException(sourceType, targetType);
}
}
public EventBean process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext) {
EventBean theEvent = eventsPerStream[streamNumber];
EventBean recast = eventAdapterService.adapterForTypedBean(theEvent.getUnderlying(), eventType.getUnderlyingEventType());
return eventAdapterService.adapterForTypedWrapper(recast, Collections.<String, Object>emptyMap(), eventType);
}
public EventType getResultEventType() {
return eventType;
}
}