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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.rdd
import java.sql._
import org.scalatest.BeforeAndAfter
import org.apache.spark.{LocalSparkContext, SparkContext, SparkFunSuite}
class JdbcRDDSuite extends SparkFunSuite with BeforeAndAfter with LocalSparkContext {
before {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver")
val conn = DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb;create=true")
try {
try {
val create = conn.createStatement
create.execute("""
CREATE TABLE FOO(
ID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1),
DATA INTEGER
)""")
create.close()
val insert = conn.prepareStatement("INSERT INTO FOO(DATA) VALUES(?)")
(1 to 100).foreach { i =>
insert.setInt(1, i * 2)
insert.executeUpdate
}
insert.close()
} catch {
case e: SQLException if e.getSQLState == "X0Y32" =>
// table exists
}
try {
val create = conn.createStatement
create.execute("CREATE TABLE BIGINT_TEST(ID BIGINT NOT NULL, DATA INTEGER)")
create.close()
val insert = conn.prepareStatement("INSERT INTO BIGINT_TEST VALUES(?,?)")
(1 to 100).foreach { i =>
insert.setLong(1, 100000000000000000L + 4000000000000000L * i)
insert.setInt(2, i)
insert.executeUpdate
}
insert.close()
} catch {
case e: SQLException if e.getSQLState == "X0Y32" =>
// table exists
}
} finally {
conn.close()
}
}
test("basic functionality") {
sc = new SparkContext("local", "test")
val rdd = new JdbcRDD(
sc,
() => { DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb") },
"SELECT DATA FROM FOO WHERE ? <= ID AND ID <= ?",
1, 100, 3,
(r: ResultSet) => { r.getInt(1) } ).cache()
assert(rdd.count === 100)
assert(rdd.reduce(_ + _) === 10100)
}
test("large id overflow") {
sc = new SparkContext("local", "test")
val rdd = new JdbcRDD(
sc,
() => { DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb") },
"SELECT DATA FROM BIGINT_TEST WHERE ? <= ID AND ID <= ?",
1131544775L, 567279358897692673L, 20,
(r: ResultSet) => { r.getInt(1) } ).cache()
assert(rdd.count === 100)
assert(rdd.reduce(_ + _) === 5050)
}
after {
try {
DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb;shutdown=true")
} catch {
case se: SQLException if se.getSQLState == "08006" =>
// Normal single database shutdown
// https://db.apache.org/derby/docs/10.2/ref/rrefexcept71493.html
}
}
}
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