/***********************************************************************************************************************
*
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.api.java.record.io.jdbc;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import junit.framework.Assert;
import org.junit.After;
import org.junit.BeforeClass;
import org.junit.Test;
import eu.stratosphere.configuration.Configuration;
import eu.stratosphere.types.DoubleValue;
import eu.stratosphere.types.FloatValue;
import eu.stratosphere.types.IntValue;
import eu.stratosphere.types.Record;
import eu.stratosphere.types.StringValue;
import eu.stratosphere.types.Value;
public class JDBCOutputFormatTest {
private JDBCInputFormat jdbcInputFormat;
private JDBCOutputFormat jdbcOutputFormat;
private static Connection conn;
static final Value[][] dbData = {
{new IntValue(1001), new StringValue("Java for dummies"), new StringValue("Tan Ah Teck"), new DoubleValue(11.11), new IntValue(11)},
{new IntValue(1002), new StringValue("More Java for dummies"), new StringValue("Tan Ah Teck"), new DoubleValue(22.22), new IntValue(22)},
{new IntValue(1003), new StringValue("More Java for more dummies"), new StringValue("Mohammad Ali"), new DoubleValue(33.33), new IntValue(33)},
{new IntValue(1004), new StringValue("A Cup of Java"), new StringValue("Kumar"), new DoubleValue(44.44), new IntValue(44)},
{new IntValue(1005), new StringValue("A Teaspoon of Java"), new StringValue("Kevin Jones"), new DoubleValue(55.55), new IntValue(55)}};
@BeforeClass
public static void setUpClass() {
try {
System.setProperty("derby.stream.error.field", "eu.stratosphere.api.java.record.io.jdbc.DevNullLogStream.DEV_NULL");
prepareDerbyInputDatabase();
prepareDerbyOutputDatabase();
} catch (ClassNotFoundException e) {
e.printStackTrace();
Assert.fail();
}
}
private static void cleanUpDerbyDatabases() {
try {
String dbURL = "jdbc:derby:memory:ebookshop;create=true";
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
conn = DriverManager.getConnection(dbURL);
Statement stat = conn.createStatement();
stat.executeUpdate("DROP TABLE books");
stat.executeUpdate("DROP TABLE newbooks");
stat.close();
conn.close();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
private static void prepareDerbyInputDatabase() throws ClassNotFoundException {
try {
String dbURL = "jdbc:derby:memory:ebookshop;create=true";
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
conn = DriverManager.getConnection(dbURL);
createTableBooks();
insertDataToSQLTables();
conn.close();
} catch (ClassNotFoundException e) {
e.printStackTrace();
Assert.fail();
} catch (SQLException e) {
e.printStackTrace();
Assert.fail();
}
}
private static void prepareDerbyOutputDatabase() throws ClassNotFoundException {
try {
String dbURL = "jdbc:derby:memory:ebookshop;create=true";
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
conn = DriverManager.getConnection(dbURL);
createTableNewBooks();
conn.close();
} catch (ClassNotFoundException e) {
e.printStackTrace();
Assert.fail();
} catch (SQLException e) {
e.printStackTrace();
Assert.fail();
}
}
private static void createTableBooks() throws SQLException {
StringBuilder sqlQueryBuilder = new StringBuilder("CREATE TABLE books (");
sqlQueryBuilder.append("id INT NOT NULL DEFAULT 0,");
sqlQueryBuilder.append("title VARCHAR(50) DEFAULT NULL,");
sqlQueryBuilder.append("author VARCHAR(50) DEFAULT NULL,");
sqlQueryBuilder.append("price FLOAT DEFAULT NULL,");
sqlQueryBuilder.append("qty INT DEFAULT NULL,");
sqlQueryBuilder.append("PRIMARY KEY (id))");
Statement stat = conn.createStatement();
stat.executeUpdate(sqlQueryBuilder.toString());
stat.close();
}
private static void createTableNewBooks() throws SQLException {
StringBuilder sqlQueryBuilder = new StringBuilder("CREATE TABLE newbooks (");
sqlQueryBuilder.append("id INT NOT NULL DEFAULT 0,");
sqlQueryBuilder.append("title VARCHAR(50) DEFAULT NULL,");
sqlQueryBuilder.append("author VARCHAR(50) DEFAULT NULL,");
sqlQueryBuilder.append("price FLOAT DEFAULT NULL,");
sqlQueryBuilder.append("qty INT DEFAULT NULL,");
sqlQueryBuilder.append("PRIMARY KEY (id))");
Statement stat = conn.createStatement();
stat.executeUpdate(sqlQueryBuilder.toString());
stat.close();
}
private static void insertDataToSQLTables() throws SQLException {
StringBuilder sqlQueryBuilder = new StringBuilder("INSERT INTO books (id, title, author, price, qty) VALUES ");
sqlQueryBuilder.append("(1001, 'Java for dummies', 'Tan Ah Teck', 11.11, 11),");
sqlQueryBuilder.append("(1002, 'More Java for dummies', 'Tan Ah Teck', 22.22, 22),");
sqlQueryBuilder.append("(1003, 'More Java for more dummies', 'Mohammad Ali', 33.33, 33),");
sqlQueryBuilder.append("(1004, 'A Cup of Java', 'Kumar', 44.44, 44),");
sqlQueryBuilder.append("(1005, 'A Teaspoon of Java', 'Kevin Jones', 55.55, 55)");
Statement stat = conn.createStatement();
stat.execute(sqlQueryBuilder.toString());
stat.close();
}
@After
public void tearDown() {
jdbcOutputFormat = null;
cleanUpDerbyDatabases();
}
@Test
public void testJDBCOutputFormat() throws IOException {
String sourceTable = "books";
String targetTable = "newbooks";
String driverPath = "org.apache.derby.jdbc.EmbeddedDriver";
String dbUrl = "jdbc:derby:memory:ebookshop";
Configuration cfg = new Configuration();
cfg.setString("driver", driverPath);
cfg.setString("url", dbUrl);
cfg.setString("query", "insert into " + targetTable + " (id, title, author, price, qty) values (?,?,?,?,?)");
cfg.setInteger("fields", 5);
cfg.setClass("type0", IntValue.class);
cfg.setClass("type1", StringValue.class);
cfg.setClass("type2", StringValue.class);
cfg.setClass("type3", FloatValue.class);
cfg.setClass("type4", IntValue.class);
jdbcOutputFormat = new JDBCOutputFormat();
jdbcOutputFormat.configure(cfg);
jdbcOutputFormat.open(0,1);
jdbcInputFormat = new JDBCInputFormat(
driverPath,
dbUrl,
"select * from " + sourceTable);
jdbcInputFormat.configure(null);
Record record = new Record();
while (!jdbcInputFormat.reachedEnd()) {
jdbcInputFormat.nextRecord(record);
jdbcOutputFormat.writeRecord(record);
}
jdbcOutputFormat.close();
jdbcInputFormat.close();
jdbcInputFormat = new JDBCInputFormat(
driverPath,
dbUrl,
"select * from " + targetTable);
jdbcInputFormat.configure(null);
int recordCount = 0;
while (!jdbcInputFormat.reachedEnd()) {
jdbcInputFormat.nextRecord(record);
Assert.assertEquals(5, record.getNumFields());
Assert.assertEquals("Field 0 should be int", IntValue.class, record.getField(0, IntValue.class).getClass());
Assert.assertEquals("Field 1 should be String", StringValue.class, record.getField(1, StringValue.class).getClass());
Assert.assertEquals("Field 2 should be String", StringValue.class, record.getField(2, StringValue.class).getClass());
Assert.assertEquals("Field 3 should be float", DoubleValue.class, record.getField(3, DoubleValue.class).getClass());
Assert.assertEquals("Field 4 should be int", IntValue.class, record.getField(4, IntValue.class).getClass());
int[] pos = {0, 1, 2, 3, 4};
Value[] values = {new IntValue(), new StringValue(), new StringValue(), new DoubleValue(), new IntValue()};
Assert.assertTrue(record.equalsFields(pos, dbData[recordCount], values));
recordCount++;
}
Assert.assertEquals(5, recordCount);
jdbcInputFormat.close();
}
}