/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.aries.util.internal;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.osgi.framework.Bundle;
import org.osgi.framework.FrameworkUtil;
public final class FelixWorker extends DefaultWorker implements FrameworkUtilWorker
{
private static Method getCurrentModuleMethod;
private static Method getClassLoader;
private static Class<?> moduleClass;
static {
Bundle b = FrameworkUtil.getBundle(FelixWorker.class);
try {
getCurrentModuleMethod = b.getClass().getDeclaredMethod("getCurrentModule");
moduleClass = b.getClass().getClassLoader().loadClass("org.apache.felix.framework.ModuleImpl");
getClassLoader = moduleClass.getDeclaredMethod("getClassLoader");
getCurrentModuleMethod.setAccessible(true);
getClassLoader.setAccessible(true);
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
} catch (IllegalArgumentException e) {
} catch (ClassNotFoundException e) {
}
}
public ClassLoader getClassLoader(Bundle b)
{
if (getCurrentModuleMethod != null) {
try {
Object result = getCurrentModuleMethod.invoke(b);
if (result != null && moduleClass.isInstance(result)) {
Object cl = getClassLoader.invoke(result);
if (cl instanceof ClassLoader) return (ClassLoader) cl;
}
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
return null;
}
public boolean isValid()
{
return getCurrentModuleMethod != null && moduleClass != null && getClassLoader != null;
}
}