HelpCommand.java

/*
 * 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.openejb.server.cli.command;

import java.util.Map;

@Command(name = "help", usage = "help", description = "print this help")
public class HelpCommand extends AbstractCommand {
    private Map<String, Class<?>> commands;

    @Override
    public void execute(final String cmd) {
        for (Map.Entry<String, Class<?>> command : commands.entrySet()) {
            try {
                final Class<?> clazz = command.getValue();
                final Command annotation = clazz.getAnnotation(Command.class);
                streamManager.writeOut(annotation.name() + ": " + annotation.description());
                streamManager.writeOut("\tUsage: " + annotation.usage(), "\n");
            } catch (Exception e) {
                // ignored = command not available
            }
        }
    }

    public void setCommands(Map<String, Class<?>> commands) {
        this.commands = commands;
    }
}