1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 package org.apache.commons.exec.launcher;
20
21 import java.io.IOException;
22 import java.util.Map;
23
24 import org.apache.commons.exec.CommandLine;
25
26 /**
27 * A command launcher that proxies another command launcher. Sub-classes
28 * override exec(args, env, workdir)
29 */
30 public abstract class CommandLauncherProxy extends CommandLauncherImpl {
31
32 public CommandLauncherProxy(final CommandLauncher launcher) {
33 myLauncher = launcher;
34 }
35
36 private final CommandLauncher myLauncher;
37
38 /**
39 * Launches the given command in a new process. Delegates this method to the
40 * proxied launcher
41 *
42 * @param cmd
43 * the command line to execute as an array of strings
44 * @param env
45 * the environment to set as an array of strings
46 * @throws IOException
47 * forwarded from the exec method of the command launcher
48 */
49 public Process exec(final CommandLine cmd, final Map env)
50 throws IOException {
51 return myLauncher.exec(cmd, env);
52 }
53 }