com.azaptree.services.command.impl.CommandChainSupport.java Source code

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Here is the source code for com.azaptree.services.command.impl.CommandChainSupport.java

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package com.azaptree.services.command.impl;

/*
 * #%L
 * AZAPTREE-COMMAND-SERVICE
 * %%
 * Copyright (C) 2012 AZAPTREE.COM
 * %%
 * Licensed 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.
 * #L%
 */

import org.apache.commons.chain.Context;
import org.apache.commons.chain.impl.ChainBase;
import org.springframework.util.Assert;

import com.azaptree.services.command.Command;
import com.azaptree.services.command.CommandChain;
import com.azaptree.services.command.CommandException;

public abstract class CommandChainSupport extends CommandSupport implements CommandChain {
    private final ChainBase chain = new ChainBase();

    private final Command[] commands;

    public CommandChainSupport(final Command... commands) {
        super();
        Assert.notEmpty(commands);
        this.commands = commands;
        initChain();
    }

    public CommandChainSupport(final String name, final Command... commands) {
        super(name);
        Assert.notEmpty(commands);
        this.commands = commands;
        initChain();
    }

    private void initChain() {
        for (final Command c : commands) {
            chain.addCommand(c);
        }
    }

    @Override
    protected boolean executeCommand(final Context ctx) {
        try {
            return chain.execute(ctx);
        } catch (final Exception e) {
            throw new CommandException(e);
        }
    }

    @Override
    public Command[] getCommands() {
        return commands;
    }

    /**
     * throws UnsupportedOperationException
     * 
     */
    @Override
    public void addCommand(org.apache.commons.chain.Command command) {
        throw new UnsupportedOperationException();
    }

}