/*
* *************************************************************************************
* 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.enummethod.dot;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.Collection;
public class ExprDotStaticMethodWrapCollection implements ExprDotStaticMethodWrap {
private static final Log log = LogFactory.getLog(ExprDotStaticMethodWrapArrayScalar.class);
private final String methodName;
private final Class componentType;
public ExprDotStaticMethodWrapCollection(String methodName, Class componentType) {
this.methodName = methodName;
this.componentType = componentType;
}
public ExprDotEvalTypeInfo getTypeInfo() {
return ExprDotEvalTypeInfo.componentColl(componentType);
}
public Collection convert(Object result) {
if (result == null) {
return null;
}
if (!(result instanceof Collection)) {
log.warn("Expected collection-type input from method '" + methodName + "' but received " + result.getClass());
return null;
}
return (Collection) result;
}
}