LocalBundle.java :  » OSGi » i-osgi » org » iosgi » ie » process » Java Open Source

/*  
 * i-OSGi - Tunable Bundle Isolation for OSGi
 * Copyright (C) 2011  Sven Schulz
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.iosgi.ie.process;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;

import org.osgi.framework.Bundle;

/**
 * @author Sven Schulz
 */
public class LocalBundle implements InvocationHandler {

  private static <K, V> Dictionary<K, V> copy(Dictionary<K, V> src) {
    Hashtable<K, V> copy = new Hashtable<K, V>();
    for (Enumeration<K> e = src.keys(); e.hasMoreElements();) {
      K k = e.nextElement();
      copy.put(k, src.get(k));
    }
    return copy;
  }

  private final Bundle bundle;

  LocalBundle(Bundle b) {
    this.bundle = b;
  }

  @SuppressWarnings("unchecked")
  @Override
  public Object invoke(Object proxy, Method method, Object[] args)
      throws Throwable {
    String methodName = method.getName();
    if (methodName.equals("getHeaders")) {
      Dictionary<String, Object> headers = (Dictionary<String, Object>) method
          .invoke(bundle, args);
      return copy(headers);
    }
    return method.invoke(bundle, args);
  }

}