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    package org.apache.xbean.command;
018    
019    import java.io.InputStream;
020    import java.io.PrintStream;
021    
022    public interface Command {
023    
024        /**
025         * HRC: if we really want to simulate a command line style environment,
026         * I think think entry point needs more context data: an std error print stream and 
027         * a environment map.
028         * 
029         * @param args
030         * @param in
031         * @param out
032         * @return
033         */
034        public int main(String[] args, InputStream in, PrintStream out);
035    
036    }