org.apache.usergrid.tools.Command.java Source code

Introduction

Here is the source code for org.apache.usergrid.tools.Command.java

Source

/*
 * 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.usergrid.tools;

import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;

import org.springframework.util.StringUtils;

import org.apache.commons.beanutils.MethodUtils;

public class Command {

    /**
     * @param args
     */
    public static void main(String[] args) {

        if ((args == null) || (args.length < 1)) {
            System.out.println("No command specified");
            return;
        }

        String command = args[0];

        Class<?> clazz = null;

        try {
            clazz = Class.forName(command);
        } catch (ClassNotFoundException e) {
        }

        if (clazz == null) {
            try {
                clazz = Class.forName("org.apache.usergrid.tools." + command);
            } catch (ClassNotFoundException e) {
            }
        }

        if (clazz == null) {
            try {
                clazz = Class.forName("org.apache.usergrid.tools." + StringUtils.capitalize(command));
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
        }

        if (clazz == null) {
            System.out.println("Unable to find command");
            return;
        }

        args = Arrays.copyOfRange(args, 1, args.length);

        try {
            if (ToolBase.class.isAssignableFrom(clazz)) {
                ToolBase tool = (ToolBase) clazz.newInstance();
                tool.startTool(args);
            } else {
                MethodUtils.invokeStaticMethod(clazz, "main", (Object) args);
            }
        } catch (NoSuchMethodException e) {
            System.out.println("Unable to invoke command");
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            System.out.println("Unable to invoke command");
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            System.out.println("Error while invoking command");
            e.printStackTrace();
        } catch (InstantiationException e) {
            System.out.println("Error while instantiating tool object");
            e.printStackTrace();
        }
    }
}