Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/1612#discussion_r17279109
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/jdbc/JdbcResultSetRDDSuite.scala
---
@@ -0,0 +1,75 @@
+/*
+ * 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.sql.jdbc
+
+import java.sql._
+
+import org.scalatest.BeforeAndAfter
+import org.apache.spark.sql.QueryTest
+import org.apache.spark.sql.test.TestSQLContext._
+
+class JdbcResultSetRDDSuite extends QueryTest with BeforeAndAfter {
+
+ before {
+ Class.forName("org.apache.derby.jdbc.EmbeddedDriver")
+ val conn =
DriverManager.getConnection("jdbc:derby:target/JdbcSchemaRDDSuiteDb;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") {
+ val jdbcResultSetRDD =
jdbcResultSet("jdbc:derby:target/JdbcSchemaRDDSuiteDb", "SELECT DATA FROM FOO")
+ jdbcResultSetRDD.registerAsTable("foo")
+
+ checkAnswer(
+ sql("select count(*) from foo"),
+ 100
+ )
+ checkAnswer(
+ sql("select sum(DATA) from foo"),
+ 10100
+ )
+ }
+
+ after {
+ try {
+ DriverManager.getConnection("jdbc:derby:;shutdown=true")
+ } catch {
+ case se: SQLException if se.getSQLState == "XJ015" =>
--- End diff --
Hmm, yeah good question... Perhaps @koeninger, who wrote the original test,
could enlighten us?
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