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Moves Java JdbcRDD test case to a separate test suite
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core/src/test/java/org/apache/spark/JavaJdbcRDDSuite.java
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/* | ||
* Licensed to the Apache Software Foundation (ASF) under one or more | ||
* contributor license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright ownership. | ||
* The ASF licenses this file to You 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.apache.spark; | ||
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import java.io.Serializable; | ||
import java.sql.Connection; | ||
import java.sql.DriverManager; | ||
import java.sql.PreparedStatement; | ||
import java.sql.ResultSet; | ||
import java.sql.SQLException; | ||
import java.sql.Statement; | ||
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import org.apache.spark.api.java.JavaRDD; | ||
import org.apache.spark.api.java.JavaSparkContext; | ||
import org.apache.spark.api.java.function.Function; | ||
import org.apache.spark.api.java.function.Function2; | ||
import org.apache.spark.rdd.JdbcRDD; | ||
import org.junit.After; | ||
import org.junit.Assert; | ||
import org.junit.Before; | ||
import org.junit.Test; | ||
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public class JavaJdbcRDDSuite implements Serializable { | ||
private transient JavaSparkContext sc; | ||
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@Before | ||
public void setUp() throws ClassNotFoundException, SQLException { | ||
sc = new JavaSparkContext("local", "JavaAPISuite"); | ||
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Class.forName("org.apache.derby.jdbc.EmbeddedDriver"); | ||
Connection connection = | ||
DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb;create=true"); | ||
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try { | ||
Statement create = connection.createStatement(); | ||
create.execute( | ||
"CREATE TABLE FOO(" + | ||
"ID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1)," + | ||
"DATA INTEGER)"); | ||
create.close(); | ||
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PreparedStatement insert = connection.prepareStatement("INSERT INTO FOO(DATA) VALUES(?)"); | ||
for (int i = 1; i <= 100; i++) { | ||
insert.setInt(1, i * 2); | ||
insert.executeUpdate(); | ||
} | ||
insert.close(); | ||
} catch (SQLException e) { | ||
// If table doesn't exist... | ||
if (e.getSQLState().compareTo("X0Y32") != 0) { | ||
throw e; | ||
} | ||
} finally { | ||
connection.close(); | ||
} | ||
} | ||
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@After | ||
public void tearDown() throws SQLException { | ||
try { | ||
DriverManager.getConnection("jdbc:derby:;shutdown=true"); | ||
} catch(SQLException e) { | ||
if (e.getSQLState().compareTo("XJ015") != 0) { | ||
throw e; | ||
} | ||
} | ||
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sc.stop(); | ||
sc = null; | ||
} | ||
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@Test | ||
public void testJavaJdbcRDD() throws Exception { | ||
JavaRDD<Integer> rdd = JdbcRDD.create( | ||
sc, | ||
new JdbcRDD.ConnectionFactory() { | ||
@Override | ||
public Connection getConnection() throws SQLException { | ||
return DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb"); | ||
} | ||
}, | ||
"SELECT DATA FROM FOO WHERE ? <= ID AND ID <= ?", | ||
1, 100, 1, | ||
new Function<ResultSet, Integer>() { | ||
@Override | ||
public Integer call(ResultSet r) throws Exception { | ||
return r.getInt(1); | ||
} | ||
} | ||
).cache(); | ||
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Assert.assertEquals(100, rdd.count()); | ||
Assert.assertEquals( | ||
Integer.valueOf(10100), | ||
rdd.reduce(new Function2<Integer, Integer, Integer>() { | ||
@Override | ||
public Integer call(Integer i1, Integer i2) { | ||
return i1 + i2; | ||
} | ||
})); | ||
} | ||
} |