/*
* *************************************************************************************
* 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.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.ExprEvaluatorContext;
import com.espertech.esper.event.DecoratingEventBean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.HashMap;
import java.util.Map;
public class EvalSelectWildcardSSWrapper extends EvalBase implements SelectExprProcessor {
private static final Log log = LogFactory.getLog(EvalSelectWildcardSSWrapper.class);
public EvalSelectWildcardSSWrapper(SelectExprContext selectExprContext, EventType resultEventType) {
super(selectExprContext, resultEventType);
}
public EventBean processSpecific(Map<String, Object> props, EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext)
{
// In case of a wildcard and single stream that is itself a
// wrapper bean, we also need to add the map properties
DecoratingEventBean wrapper = (DecoratingEventBean)eventsPerStream[0];
if(wrapper != null)
{
Map<String, Object> map = wrapper.getDecoratingProperties();
if ((super.getExprNodes().length == 0) && (!map.isEmpty()))
{
props = new HashMap<String, Object>(map);
}
else
{
props.putAll(map);
}
}
EventBean event = eventsPerStream[0];
// Using a wrapper bean since we cannot use the same event type else same-type filters match.
// Wrapping it even when not adding properties is very inexpensive.
return super.getEventAdapterService().adapterForTypedWrapper(event, props, super.getResultEventType());
}
}