| /* |
| * 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.karaf.shell.commands; |
| |
| import java.lang.reflect.Method; |
| import java.util.List; |
| |
| import org.apache.felix.gogo.commands.Argument; |
| import org.apache.felix.gogo.commands.Command; |
| import org.apache.felix.gogo.commands.Option; |
| import org.apache.karaf.shell.console.AbstractAction; |
| |
| /** |
| * Execute a Java standard application. |
| * |
| * <p>By default looks for static main(String[]) to execute, but |
| * you can specify a different static method that takes a String[] |
| * to execute instead. |
| * |
| * @version $Rev: 593392 $ $Date: 2007-11-09 03:14:15 +0100 (Fri, 09 Nov 2007) $ |
| */ |
| @Command(scope = "shell", name = "java", description = "Executes a Java standard application.") |
| public class JavaAction extends AbstractAction { |
| |
| @Option(name = "-m", aliases = {"--method"}, description = "Invoke a named method", required = false, multiValued = false) |
| private String methodName = "main"; |
| |
| @Argument(index = 0, name = "className", description="The name of the class to invoke", required = true, multiValued = false) |
| private String className; |
| |
| @Argument(index = 1, name = "arguments", description="Arguments to pass to the method of the given class", required = false, multiValued = false) |
| private List<String> args; |
| |
| protected Object doExecute() throws Exception { |
| boolean info = log.isInfoEnabled(); |
| |
| Class type = Thread.currentThread().getContextClassLoader().loadClass(className); |
| if (info) { |
| log.info("Using type: " + type); |
| } |
| |
| Method method = type.getMethod(methodName, String[].class); |
| if (info) { |
| log.info("Using method: " + method); |
| } |
| |
| if (info) { |
| log.info("Invoking w/arguments: {}", args); |
| } |
| |
| Object result = method.invoke(null, args); |
| |
| if (info) { |
| log.info("Result: " + result); |
| } |
| |
| return null; |
| } |
| |
| } |