org.apache.asterix.installer.command.AbstractCommand Maven / Gradle / Ivy

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/*
 * 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.asterix.installer.command;

import org.apache.log4j.Logger;
import org.kohsuke.args4j.CmdLineParser;

public abstract class AbstractCommand implements ICommand {

    protected static final Logger LOGGER = Logger.getLogger(AbstractCommand.class.getName());

    protected CommandConfig config;

    protected String usageDescription;

    public void execute(String[] args) throws Exception {
        String[] cmdArgs = new String[args.length - 1];
        System.arraycopy(args, 1, cmdArgs, 0, cmdArgs.length);
        config = getCommandConfig();
        CmdLineParser parser = new CmdLineParser(config);
        parser.parseArgument(cmdArgs);
        execCommand();
    }

    abstract protected void execCommand() throws Exception;

    abstract protected String getUsageDescription();

    abstract protected CommandConfig getCommandConfig();
}