/*
***************************************************************************************
* 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.lookup;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.epl.join.table.PropertyIndexedEventTable;
import com.espertech.esper.util.JavaClassHelper;
/**
* Index lookup strategy that coerces the key values before performing a lookup.
*/
public class SubordIndexedTableLookupStrategyCoercingNW extends SubordIndexedTableLookupStrategyExprNW {
private Class[] coercionTypes;
public SubordIndexedTableLookupStrategyCoercingNW(ExprEvaluator[] evaluators, PropertyIndexedEventTable index, Class[] coercionTypes, LookupStrategyDesc strategyDesc) {
super(evaluators, index, strategyDesc);
this.coercionTypes = coercionTypes;
}
protected Object[] getKeys(EventBean[] eventsPerStream, ExprEvaluatorContext context) {
Object[] keys = super.getKeys(eventsPerStream, context);
for (int i = 0; i < keys.length; i++) {
Object value = keys[i];
Class coercionType = coercionTypes[i];
if ((value != null) && (!value.getClass().equals(coercionType))) {
if (value instanceof Number) {
value = JavaClassHelper.coerceBoxed((Number) value, coercionTypes[i]);
}
keys[i] = value;
}
}
return keys;
}
}