blob: 6afb0fa9bc77f6663939d9be2cc2ad8ae6c58b43 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
package spark
import org.scalatest.{ BeforeAndAfter, FunSuite }
import spark.SparkContext._
import spark.rdd.JdbcRDD
import java.sql._
class JdbcRDDSuite extends FunSuite with BeforeAndAfter with LocalSparkContext {
before {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver")
val conn = DriverManager.getConnection("jdbc:derby:target/JdbcRDDSuiteDb;create=true")
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
} 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)
}
after {
try {
DriverManager.getConnection("jdbc:derby:;shutdown=true")
} catch {
case se: SQLException if se.getSQLState == "XJ015" =>
// normal shutdown
}
}
}
|
