    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     *  contributor license agreements.  See the NOTICE file distributed with
    004     *  this work for additional information regarding copyright ownership.
    005     *  The ASF licenses this file to You under the Apache License, Version 2.0
    006     *  (the "License"); you may not use this file except in compliance with
    007     *  the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     *  Unless required by applicable law or agreed to in writing, software
    012     *  distributed under the License is distributed on an "AS IS" BASIS,
    013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     *  See the License for the specific language governing permissions and
    015     *  limitations under the License.
    016     *
    017     */
    018
    019    package org.apache.commons.exec.launcher;
    020
    021    import java.io.IOException;
    022    import java.util.Map;
    023
    024    import org.apache.commons.exec.CommandLine;
    025
    026    /**
    027     * A command launcher that proxies another command launcher. Sub-classes
    028     * override exec(args, env, workdir)
    029     */
    030    public abstract class CommandLauncherProxy extends CommandLauncherImpl {
    031
    032        public CommandLauncherProxy(final CommandLauncher launcher) {
    033            myLauncher = launcher;
    034        }
    035
    036        private final CommandLauncher myLauncher;
    037
    038        /**
    039         * Launches the given command in a new process. Delegates this method to the
    040         * proxied launcher
    041         *
    042         * @param cmd
    043         *            the command line to execute as an array of strings
    044         * @param env
    045         *            the environment to set as an array of strings
    046         * @throws IOException
    047         *             forwarded from the exec method of the command launcher
    048         */
    049        public Process exec(final CommandLine cmd, final Map env)
    050                throws IOException {
    051            return myLauncher.exec(cmd, env);
    052        }
    053    }