org.mybatis.maven.mvnmigrate.DownCommandMojo Maven / Gradle / Ivy

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Migration-plugin is a Apache Maven 2 plugin that aims to integrate into the maven life cycle, the myBatis 3 Migration tool. MyBatis 3 Migration Schema is a tool that helps you to manage database schema changes.

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/*
 *    Copyright 2010 The myBatis Team
 *
 *    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.
 */
package org.mybatis.maven.mvnmigrate;

import org.apache.ibatis.migration.commands.DownCommand;
import org.apache.ibatis.migration.options.SelectedOptions;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;

/**
 * Goal which execute the ibatis migration status command.
 *
 * @version $Id$
 * @goal down
 */
public final class DownCommandMojo extends AbstractCommandMojo {

    /**
     * Steps to do. (type ALL to apply all down steps, default: 1 step)
     *
     * @parameter expression="${migration.down.steps}"
     */
    private String downSteps;

    /**
     * {@inheritDoc}
     *
     * @param options
     */
    @Override
    protected DownCommand createCommandClass(SelectedOptions options) {
        return new DownCommand(options);
    }

    /** {@inheritDoc} */
    @Override
    public void execute() throws MojoExecutionException, MojoFailureException {
        if (isSkip()) {
            return;
        }
        init();

        // default downsteps to 1 if not specified on command line
        if (downSteps == null) {
            downSteps = "1";
        }
 
        if ("ALL".equalsIgnoreCase(downSteps)) {
            downSteps = "999999";
        }

        getCommand().execute(downSteps);
    }

}