/*
* This file is part of aion-emu <aion-emu.com>.
*
* aion-emu is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* aion-emu is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with aion-emu. If not, see <http://www.gnu.org/licenses/>.
*/
package com.aionemu.commons.scripting.classlistener;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import org.apache.log4j.Logger;
import com.aionemu.commons.scripting.metadata.OnClassLoad;
import com.aionemu.commons.scripting.metadata.OnClassUnload;
/**
* @author SoulKeeper
*/
public class DefaultClassListener implements ClassListener
{
/**
* Logger
*/
private static final Logger log = Logger.getLogger(DefaultClassListener.class);
@Override
public void postLoad(Class<?>[] classes)
{
for(Class<?> c : classes)
{
doMethodInvoke(c.getDeclaredMethods(), OnClassLoad.class);
}
}
@Override
public void preUnload(Class<?>[] classes)
{
for(Class<?> c : classes)
{
doMethodInvoke(c.getDeclaredMethods(), OnClassUnload.class);
}
}
/**
* Actually invokes method where given annotation class is present. Only static methods can be invoked
*
* @param methods
* Methods to scan for annotations
* @param annotationClass
* class of annotation to search for
*/
protected final void doMethodInvoke(Method[] methods, Class<? extends Annotation> annotationClass)
{
for(Method m : methods)
{
if(!Modifier.isStatic(m.getModifiers()))
continue;
boolean accessible = m.isAccessible();
m.setAccessible(true);
if(m.getAnnotation(annotationClass) != null)
{
try
{
m.invoke(null);
}
catch(IllegalAccessException e)
{
log.error("Can't access method " + m.getName() + " of class " + m.getDeclaringClass().getName(), e);
}
catch(InvocationTargetException e)
{
log.error("Can't invoke method " + m.getName() + " of class " + m.getDeclaringClass().getName(), e);
}
}
m.setAccessible(accessible);
}
}
}