| /* |
| * 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.felix.gogo.runtime; |
| |
| import java.util.List; |
| |
| import org.apache.felix.service.command.CommandSession; |
| import org.apache.felix.service.command.Function; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceReference; |
| |
| public class CommandProxy implements Function |
| { |
| private BundleContext context; |
| private ServiceReference reference; |
| private String function; |
| private Object target; |
| |
| public CommandProxy(BundleContext context, ServiceReference reference, String function) |
| { |
| this.context = context; |
| this.reference = reference; |
| this.function = function; |
| } |
| |
| public CommandProxy(Object target, String function) |
| { |
| this.function = function; |
| this.target = target; |
| } |
| |
| public Object getTarget() |
| { |
| return (context != null ? context.getService(reference) : target); |
| } |
| |
| public void ungetTarget() |
| { |
| if (context != null) |
| { |
| try |
| { |
| context.ungetService(reference); |
| } |
| catch (IllegalStateException e) |
| { |
| // ignore - probably due to shutdown |
| // java.lang.IllegalStateException: BundleContext is no longer valid |
| } |
| } |
| } |
| |
| public Object execute(CommandSession session, List<Object> arguments) |
| throws Exception |
| { |
| Object tgt = getTarget(); |
| |
| try |
| { |
| if (tgt instanceof Function) |
| { |
| return ((Function) tgt).execute(session, arguments); |
| } |
| else |
| { |
| return Reflective.invoke(session, tgt, function, arguments); |
| } |
| } |
| finally |
| { |
| ungetTarget(); |
| } |
| } |
| } |