/*
* *************************************************************************************
* 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.ExprEvaluator;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.event.EventAdapterService;
import java.util.HashMap;
import java.util.Map;
public class EvalSelectNoWildcardMap implements SelectExprProcessor {
private final SelectExprContext selectExprContext;
private final EventType resultEventType;
public EvalSelectNoWildcardMap(SelectExprContext selectExprContext, EventType resultEventType) {
this.selectExprContext = selectExprContext;
this.resultEventType = resultEventType;
}
public EventBean process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext)
{
ExprEvaluator[] expressionNodes = selectExprContext.getExpressionNodes();
String[] columnNames = selectExprContext.getColumnNames();
EventAdapterService eventAdapterService = selectExprContext.getEventAdapterService();
// Evaluate all expressions and build a map of name-value pairs
Map<String, Object> props = new HashMap<String, Object>();
for (int i = 0; i < expressionNodes.length; i++)
{
Object evalResult = expressionNodes[i].evaluate(eventsPerStream, isNewData, exprEvaluatorContext);
props.put(columnNames[i], evalResult);
}
return eventAdapterService.adapterForTypedMap(props, resultEventType);
}
public EventType getResultEventType()
{
return resultEventType;
}
}