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 */
017package org.apache.xbean.command;
018
019import java.io.InputStream;
020import java.io.PrintStream;
021
022public 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}