/*
***************************************************************************************
* 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.event.bean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
public class BeanInstantiatorByCtor implements BeanInstantiator {
private static Logger log = LoggerFactory.getLogger(BeanInstantiatorByCtor.class);
private final Constructor ctor;
public BeanInstantiatorByCtor(Constructor ctor) {
this.ctor = ctor;
}
public Object instantiate() {
try {
return ctor.newInstance();
} catch (InvocationTargetException e) {
String message = "Unexpected exception encountered invoking constructor '" + ctor.getName() + "' on class '" + ctor.getDeclaringClass().getName() + "': " + e.getTargetException().getMessage();
log.error(message, e);
return null;
} catch (IllegalAccessException ex) {
return handle(ex);
} catch (InstantiationException ex) {
return handle(ex);
}
}
private Object handle(Exception e) {
String message = "Unexpected exception encountered invoking newInstance on class '" + ctor.getDeclaringClass().getName() + "': " + e.getMessage();
log.error(message, e);
return null;
}
}