| /* |
| * 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.exec.store.hive.inspectors; |
| |
| import org.apache.drill.exec.store.hive.readers.inspectors.SkipFooterRecordsInspector; |
| import org.apache.drill.test.BaseTest; |
| import org.apache.hadoop.mapred.RecordReader; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| public class SkipFooterRecordsInspectorTest extends BaseTest { |
| |
| private static RecordReader<Object, Object> recordReader; |
| |
| @BeforeClass |
| @SuppressWarnings("unchecked") |
| public static void init() { |
| recordReader = mock(RecordReader.class); |
| when(recordReader.createValue()).thenReturn(new Object()); |
| } |
| |
| @Test |
| public void testHolderReUsage() { |
| SkipFooterRecordsInspector inspector = new SkipFooterRecordsInspector(recordReader, 1); |
| // store first value holder |
| Object firstHolder = inspector.getValueHolder(); |
| |
| // return null since one record was buffered as footer |
| assertNull(inspector.getNextValue()); |
| |
| // store first value holder |
| Object secondHolder = inspector.getValueHolder(); |
| |
| // return value stored in first holder now second holder is buffering the footer |
| assertEquals(secondHolder, inspector.getValueHolder()); |
| assertEquals(firstHolder, inspector.getNextValue()); |
| |
| // return value stored in second holder, as now first holder is buffering the footer |
| assertEquals(firstHolder, inspector.getValueHolder()); |
| assertEquals(secondHolder, inspector.getNextValue()); |
| } |
| |
| @Test |
| public void testReset() { |
| SkipFooterRecordsInspector inspector = new SkipFooterRecordsInspector(recordReader, 2); |
| assertEquals(0, inspector.getProcessedRecordCount()); |
| |
| // store second holder |
| inspector.getNextValue(); |
| Object secondHolder = inspector.getValueHolder(); |
| inspector.getNextValue(); |
| |
| // process n records and increment count, so we stop at second holder |
| for (int i = 0; i < 4; i++) { |
| inspector.getNextValue(); |
| inspector.incrementProcessedRecordCount(); |
| } |
| assertEquals(4, inspector.getProcessedRecordCount()); |
| assertEquals(secondHolder, inspector.getValueHolder()); |
| |
| // reset and make sure we start from the last available holder |
| inspector.reset(); |
| assertEquals(0, inspector.getProcessedRecordCount()); |
| assertEquals(secondHolder, inspector.getValueHolder()); |
| } |
| } |