| /* |
| * 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.drill.jdbc; |
| |
| import static org.hamcrest.CoreMatchers.equalTo; |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.core.StringContains.containsString; |
| import static org.junit.Assert.assertNull; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import java.sql.Connection; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| |
| import org.apache.drill.categories.SlowTest; |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.categories.JdbcTest; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.rules.ExpectedException; |
| |
| @Category({SlowTest.class, JdbcTest.class}) |
| public class DrillResultSetTest extends JdbcTestBase { |
| |
| // TODO: Move Jetty status server disabling to DrillTest. |
| private static final String STATUS_SERVER_PROPERTY_NAME = |
| ExecConstants.HTTP_ENABLE; |
| |
| private static final String origStatusServerPropValue = |
| System.getProperty(STATUS_SERVER_PROPERTY_NAME, "true"); |
| |
| @Rule |
| public ExpectedException thrown = ExpectedException.none(); |
| |
| // Disable Jetty status server so unit tests run (outside Maven setup). |
| // (TODO: Move this to base test class and/or have Jetty try other ports.) |
| @BeforeClass |
| public static void setUpClass() { |
| System.setProperty(STATUS_SERVER_PROPERTY_NAME, "false"); |
| } |
| |
| @AfterClass |
| public static void tearDownClass() { |
| System.setProperty(STATUS_SERVER_PROPERTY_NAME, origStatusServerPropValue); |
| } |
| |
| |
| @Test |
| public void test_next_blocksFurtherAccessAfterEnd() |
| throws SQLException { |
| Connection connection = connect(); |
| Statement statement = connection.createStatement(); |
| ResultSet resultSet = |
| statement.executeQuery("SELECT 1 AS x \n" + |
| "FROM cp.`donuts.json` \n" + |
| "LIMIT 2"); |
| |
| // Advance to first row; confirm can access data. |
| assertThat(resultSet.next(), is(true)); |
| assertThat(resultSet.getInt(1), is(1)); |
| |
| // Advance from first to second (last) row, confirming data access. |
| assertThat(resultSet.next(), is(true)); |
| assertThat(resultSet.getInt(1), is(1)); |
| |
| // Now advance past last row. |
| assertThat(resultSet.next(), is(false)); |
| |
| // Main check: That row data access methods now throw SQLException. |
| thrown.expect(InvalidCursorStateSqlException.class); |
| thrown.expectMessage(containsString("Result set cursor is already positioned past all rows.")); |
| resultSet.getInt(1); |
| |
| assertThat(resultSet.next(), is(false)); |
| |
| // TODO: Ideally, test all other accessor methods. |
| } |
| |
| @Test |
| public void test_next_blocksFurtherAccessWhenNoRows() |
| throws Exception { |
| Connection connection = connect(); |
| Statement statement = connection.createStatement(); |
| ResultSet resultSet = |
| statement.executeQuery("SELECT 'Hi' AS x \n" + |
| "FROM cp.`donuts.json` \n" + |
| "WHERE false"); |
| |
| // Do initial next(). (Advance from before results to next possible |
| // position (after the set of zero rows). |
| assertThat(resultSet.next(), is(false)); |
| |
| // Main check: That row data access methods throw SQLException. |
| thrown.expect(InvalidCursorStateSqlException.class); |
| thrown.expectMessage(containsString("Result set cursor is already positioned past all rows.")); |
| resultSet.getString(1); |
| |
| assertThat(resultSet.next(), is(false)); |
| |
| // TODO: Ideally, test all other accessor methods. |
| } |
| |
| @Test |
| public void test_getRow_isOneBased() |
| throws Exception { |
| Connection connection = connect(); |
| Statement statement = connection.createStatement(); |
| ResultSet resultSet = |
| statement.executeQuery("VALUES (1), (2)"); |
| |
| // Expect 0 when before first row: |
| assertThat("getRow() before first next()", resultSet.getRow(), equalTo(0)); |
| |
| resultSet.next(); |
| |
| // Expect 1 at first row: |
| assertThat("getRow() at first row", resultSet.getRow(), equalTo(1)); |
| |
| resultSet.next(); |
| |
| // Expect 2 at second row: |
| assertThat("getRow() at second row", resultSet.getRow(), equalTo(2)); |
| |
| resultSet.next(); |
| |
| // Expect 0 again when after last row: |
| assertThat("getRow() after last row", resultSet.getRow(), equalTo(0)); |
| resultSet.next(); |
| assertThat("getRow() after last row", resultSet.getRow(), equalTo(0)); |
| } |
| |
| @Test |
| public void testGetObjectNull() throws SQLException { |
| Connection connection = connect(); |
| Statement statement = connection.createStatement(); |
| ResultSet resultSet = |
| statement.executeQuery( |
| "select coalesce(a1, b1) " + |
| "from cp.`testGetObjectNull.parquet` " + |
| "limit 1"); |
| resultSet.next(); |
| assertNull(resultSet.getObject(1)); |
| } |
| |
| // TODO: Ideally, test other methods. |
| |
| } |