| /* |
| * 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.shell; |
| |
| import java.io.PrintStream; |
| |
| /** |
| * This interface is used to define commands for the Felix impl |
| * service. Any bundle wishing to create commands for the |
| * impl service simply needs to create a service object that |
| * implements this interface and then register it with the OSGi |
| * framework. The impl service automatically includes any |
| * registered command services in its list of available commands. |
| **/ |
| public interface Command |
| { |
| /** |
| * Returns the name of the command that is implemented by the |
| * interface. The command name should not contain whitespace |
| * and should also be unique. |
| * @return the name of the command. |
| **/ |
| public String getName(); |
| |
| /** |
| * Returns the usage string for the command. The usage string is |
| * a short string that illustrates how to use the command on the |
| * command line. This information is used when generating command |
| * help information. An example usage string for the <tt>install</tt> |
| * command is: |
| * <pre> |
| * install <URL> [<URL> ...] |
| * </pre> |
| * @return the usage string for the command. |
| **/ |
| public String getUsage(); |
| |
| /** |
| * Returns a short description of the command; this description |
| * should be as short as possible. This information is used when |
| * generating the command help information. |
| * @return a short description of the command. |
| **/ |
| public String getShortDescription(); |
| |
| /** |
| * Executes the command using the supplied command line, output |
| * print stream, and error print stream. |
| * @param line the complete command line, including the command name. |
| * @param out the print stream to use for standard output. |
| * @param err the print stream to use for standard error. |
| **/ |
| public void execute(String line, PrintStream out, PrintStream err); |
| } |