Java tutorial
package com.github.xdev; /* * Copyright 2001-2005 The Apache Software Foundation. * * 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. */ import org.apache.maven.plugin.AbstractMojo; import org.apache.maven.plugin.MojoExecutionException; import org.apache.maven.plugins.annotations.Mojo; import org.apache.maven.plugins.annotations.Parameter; import org.joda.time.DateTime; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.text.MessageFormat; @Mojo(name = "new") public class MigrationsPluginMojo extends AbstractMojo { private static final String VERSION_PATTERN = "yyyyMMddHHmmssSSS"; private static final String FLYWAY_DB_MIGRATION_PATTERN = "V{0}__{1}.sql"; @Parameter(defaultValue = "${project.basedir}/src/main/resources/db/migration", property = "migrationsDir", required = true) private File migrationsDirectory; @Parameter(property = "name", defaultValue = "new_migration") private String name; public void execute() throws MojoExecutionException { getLog().info("Migrations location is " + migrationsDirectory.getAbsolutePath()); if (!migrationsDirectory.exists()) { getLog().info("Migrations location not found. Creating migrations directory"); migrationsDirectory.mkdirs(); } name = name.replaceAll("\\s", "_").toLowerCase(); String timeStamp = DateTime.now().toString(VERSION_PATTERN); String migrationName = MessageFormat.format(FLYWAY_DB_MIGRATION_PATTERN, timeStamp, name); getLog().info("Creating new migration: " + migrationName); FileWriter writer = null; try { File migration = new File(migrationsDirectory, migrationName); writer = new FileWriter(migration); //Write name comment writer.write("# " + name); getLog().info("Migration created " + migration.getAbsolutePath()); } catch (IOException ex) { throw new MojoExecutionException("Error creating new migration file", ex); } finally { if (writer != null) { try { writer.close(); } catch (IOException ex) { //Ignore } } } } }