| /* |
| * 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.wayang.jdbc.operators; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.apache.wayang.basic.data.Record; |
| import org.apache.wayang.core.api.Configuration; |
| import org.apache.wayang.core.api.Job; |
| import org.apache.wayang.core.function.PredicateDescriptor; |
| import org.apache.wayang.core.optimizer.OptimizationContext; |
| import org.apache.wayang.core.plan.executionplan.ExecutionTask; |
| import org.apache.wayang.core.plan.wayangplan.ExecutionOperator; |
| import org.apache.wayang.core.plan.wayangplan.OutputSlot; |
| import org.apache.wayang.core.platform.ChannelInstance; |
| import org.apache.wayang.core.platform.CrossPlatformExecutor; |
| import org.apache.wayang.core.profiling.FullInstrumentationStrategy; |
| import org.apache.wayang.java.channels.StreamChannel; |
| import org.apache.wayang.java.execution.JavaExecutor; |
| import org.apache.wayang.java.platform.JavaPlatform; |
| import org.apache.wayang.jdbc.channels.SqlQueryChannel; |
| import org.apache.wayang.jdbc.test.HsqldbFilterOperator; |
| import org.apache.wayang.jdbc.test.HsqldbPlatform; |
| |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| /** |
| * Test suite for {@link SqlToStreamOperator}. |
| */ |
| public class SqlToStreamOperatorTest extends OperatorTestBase { |
| |
| @Test |
| public void testWithHsqldb() throws SQLException { |
| Configuration configuration = new Configuration(); |
| |
| Job job = mock(Job.class); |
| when(job.getConfiguration()).thenReturn(configuration); |
| |
| CrossPlatformExecutor cpe = new CrossPlatformExecutor(job, new FullInstrumentationStrategy()); |
| when(job.getCrossPlatformExecutor()).thenReturn(cpe); |
| final JavaExecutor javaExecutor = new JavaExecutor(JavaPlatform.getInstance(), job); |
| |
| HsqldbPlatform hsqldbPlatform = new HsqldbPlatform(); |
| |
| // Create some test data. |
| try (Connection jdbcConnection = hsqldbPlatform.createDatabaseDescriptor(configuration).createJdbcConnection()) { |
| final Statement statement = jdbcConnection.createStatement(); |
| statement.execute("CREATE TABLE testWithHsqldb (a INT, b VARCHAR(6));"); |
| statement.execute("INSERT INTO testWithHsqldb VALUES (0, 'zero');"); |
| statement.execute("INSERT INTO testWithHsqldb VALUES (1, 'one');"); |
| statement.execute("INSERT INTO testWithHsqldb VALUES (2, 'two');"); |
| } |
| |
| final ExecutionOperator filterOperator = new HsqldbFilterOperator( |
| new PredicateDescriptor<>(x -> false, Record.class) |
| ); |
| final SqlQueryChannel sqlQueryChannel = new SqlQueryChannel( |
| HsqldbPlatform.getInstance().getSqlQueryChannelDescriptor(), |
| filterOperator.getOutput(0) |
| ); |
| SqlQueryChannel.Instance sqlQueryChannelInstance = sqlQueryChannel.createInstance( |
| hsqldbPlatform.createExecutor(job), |
| mock(OptimizationContext.OperatorContext.class), |
| 0 |
| ); |
| sqlQueryChannelInstance.setSqlQuery("SELECT * FROM testWithHsqldb;"); |
| ExecutionTask producer = new ExecutionTask(filterOperator); |
| producer.setOutputChannel(0, sqlQueryChannel); |
| |
| StreamChannel.Instance streamChannelInstance = |
| new StreamChannel(StreamChannel.DESCRIPTOR, mock(OutputSlot.class)).createInstance( |
| javaExecutor, |
| mock(OptimizationContext.OperatorContext.class), |
| 0 |
| ); |
| |
| SqlToStreamOperator sqlToStreamOperator = new SqlToStreamOperator(HsqldbPlatform.getInstance()); |
| evaluate( |
| sqlToStreamOperator, |
| new ChannelInstance[]{sqlQueryChannelInstance}, |
| new ChannelInstance[]{streamChannelInstance} |
| ); |
| |
| List<Record> output = streamChannelInstance.<Record>provideStream().collect(Collectors.toList()); |
| List<Record> expected = Arrays.asList( |
| new Record(0, "zero"), |
| new Record(1, "one"), |
| new Record(2, "two") |
| ); |
| |
| Assert.assertEquals(expected, output); |
| } |
| |
| @Test |
| public void testWithEmptyHsqldb() throws SQLException { |
| Configuration configuration = new Configuration(); |
| |
| Job job = mock(Job.class); |
| when(job.getConfiguration()).thenReturn(configuration); |
| |
| CrossPlatformExecutor cpe = new CrossPlatformExecutor(job, new FullInstrumentationStrategy()); |
| when(job.getCrossPlatformExecutor()).thenReturn(cpe); |
| final JavaExecutor javaExecutor = new JavaExecutor(JavaPlatform.getInstance(), job); |
| |
| HsqldbPlatform hsqldbPlatform = new HsqldbPlatform(); |
| |
| // Create some test data. |
| try (Connection jdbcConnection = hsqldbPlatform.createDatabaseDescriptor(configuration).createJdbcConnection()) { |
| final Statement statement = jdbcConnection.createStatement(); |
| statement.execute("CREATE TABLE testWithEmptyHsqldb (a INT, b VARCHAR(6));"); |
| } |
| |
| final ExecutionOperator filterOperator = new HsqldbFilterOperator( |
| new PredicateDescriptor<>(x -> false, Record.class) |
| ); |
| final SqlQueryChannel sqlQueryChannel = new SqlQueryChannel( |
| HsqldbPlatform.getInstance().getSqlQueryChannelDescriptor(), |
| filterOperator.getOutput(0) |
| ); |
| SqlQueryChannel.Instance sqlQueryChannelInstance = sqlQueryChannel.createInstance( |
| hsqldbPlatform.createExecutor(job), |
| mock(OptimizationContext.OperatorContext.class), |
| 0 |
| ); |
| sqlQueryChannelInstance.setSqlQuery("SELECT * FROM testWithEmptyHsqldb;"); |
| ExecutionTask producer = new ExecutionTask(filterOperator); |
| producer.setOutputChannel(0, sqlQueryChannel); |
| |
| StreamChannel.Instance streamChannelInstance = |
| new StreamChannel(StreamChannel.DESCRIPTOR, mock(OutputSlot.class)).createInstance( |
| javaExecutor, |
| mock(OptimizationContext.OperatorContext.class), |
| 0 |
| ); |
| |
| SqlToStreamOperator sqlToStreamOperator = new SqlToStreamOperator(HsqldbPlatform.getInstance()); |
| evaluate( |
| sqlToStreamOperator, |
| new ChannelInstance[]{sqlQueryChannelInstance}, |
| new ChannelInstance[]{streamChannelInstance} |
| ); |
| |
| List<Record> output = streamChannelInstance.<Record>provideStream().collect(Collectors.toList()); |
| Assert.assertTrue(output.isEmpty()); |
| } |
| |
| } |