/*
* The MIT License
*
* Copyright (c) 2014, Mahmoud Ben Hassine (md.benhassine@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.easybatch.tutorials.advanced;
import org.easybatch.core.api.EasyBatchReport;
import org.easybatch.core.impl.EasyBatchEngine;
import org.easybatch.core.impl.EasyBatchEngineBuilder;
import org.easybatch.flatfile.FlatFileRecordReader;
import org.easybatch.flatfile.dsv.DelimitedRecordMapper;
import org.easybatch.jdbc.JdbcRecordMapper;
import org.easybatch.jdbc.JdbcRecordReader;
import org.easybatch.xml.XmlRecordMapper;
import org.easybatch.xml.XmlRecordReader;
import java.io.File;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
/**
* Main class to run the advanced ETL tutorial.
*
* @author Mahmoud Ben Hassine (md.benhassine@gmail.com)
*/
public class Launcher {
public static void main(String[] args) throws Exception {
//do not let hsqldb reconfigure java.util.logging used by easy batch
System.setProperty("hsqldb.reconfig_logging", "false");
/*
* Start embedded database server
*/
DatabaseUtil.startEmbeddedDatabase();
DatabaseUtil.initializeSessionFactory();
// Build an easy batch engine to read greetings from csv file
EasyBatchEngine easyBatchCsvEngine = new EasyBatchEngineBuilder()
.registerRecordReader(new FlatFileRecordReader(new File(args[0])))
.registerRecordMapper(new DelimitedRecordMapper<Greeting>(Greeting.class, new String[]{"id","name"}))
.registerRecordProcessor(new GreetingDataLoader())
.build();
// Build an easy batch engine to read greetings from xml file
EasyBatchEngine easyBatchXmlEngine = new EasyBatchEngineBuilder()
.registerRecordReader(new XmlRecordReader("greeting", new File(args[1])))
.registerRecordMapper(new XmlRecordMapper<Greeting>(Greeting.class))
.registerRecordProcessor(new GreetingDataLoader())
.build();
//create a 2 threads pool to call Easy Batch engines in parallel
ExecutorService executorService = Executors.newFixedThreadPool(2);
Future<EasyBatchReport> easyBatchReport1 = executorService.submit(easyBatchCsvEngine);
Future<EasyBatchReport> easyBatchReport2 = executorService.submit(easyBatchXmlEngine);
easyBatchReport1.get();
easyBatchReport2.get();
executorService.shutdown();
// Build an easy batch engine to generate JSON products data from the database
EasyBatchEngine easyBatchJsonEngine = new EasyBatchEngineBuilder()
.registerRecordReader(new JdbcRecordReader(DatabaseUtil.getDatabaseConnection(), "select * from greeting"))
.registerRecordMapper(new JdbcRecordMapper<Greeting>(Greeting.class))
.registerRecordProcessor(new GreetingJsonGenerator())
.build();
easyBatchJsonEngine.call();
//close database session factory
DatabaseUtil.closeSessionFactory();
}
}