| /** |
| * 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.hadoop.mapreduce.lib.db; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.io.IOException; |
| import java.math.BigDecimal; |
| import java.sql.ResultSet; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| import org.apache.hadoop.mapreduce.MRJobConfig; |
| import org.apache.hadoop.mapreduce.lib.db.DataDrivenDBInputFormat.DataDrivenDBInputSplit; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Test Splitters. Splitters should build parts of sql sentences for split result. |
| */ |
| public class TestSplitters { |
| |
| private Configuration configuration; |
| |
| @Before |
| public void setup() { |
| configuration = new Configuration(); |
| configuration.setInt(MRJobConfig.NUM_MAPS, 2); |
| } |
| |
| @Test(timeout=2000) |
| public void testBooleanSplitter() throws Exception{ |
| BooleanSplitter splitter = new BooleanSplitter(); |
| ResultSet result = mock(ResultSet.class); |
| when(result.getString(1)).thenReturn("result1"); |
| |
| List<InputSplit> splits=splitter.split(configuration, result, "column"); |
| assertSplits(new String[] {"column = FALSE column = FALSE", |
| "column IS NULL column IS NULL"}, splits); |
| |
| when(result.getString(1)).thenReturn("result1"); |
| when(result.getString(2)).thenReturn("result2"); |
| when(result.getBoolean(1)).thenReturn(true); |
| when(result.getBoolean(2)).thenReturn(false); |
| |
| splits=splitter.split(configuration, result, "column"); |
| assertEquals(0, splits.size()); |
| |
| when(result.getString(1)).thenReturn("result1"); |
| when(result.getString(2)).thenReturn("result2"); |
| when(result.getBoolean(1)).thenReturn(false); |
| when(result.getBoolean(2)).thenReturn(true); |
| |
| splits = splitter.split(configuration, result, "column"); |
| assertSplits(new String[] { |
| "column = FALSE column = FALSE", ".*column = TRUE"}, splits); |
| } |
| |
| @Test(timeout=2000) |
| public void testFloatSplitter() throws Exception{ |
| FloatSplitter splitter = new FloatSplitter(); |
| |
| ResultSet results = mock(ResultSet.class); |
| |
| List<InputSplit> splits = splitter.split(configuration, results, "column"); |
| assertSplits(new String[] {".*column IS NULL"}, splits); |
| |
| when(results.getString(1)).thenReturn("result1"); |
| when(results.getString(2)).thenReturn("result2"); |
| when(results.getDouble(1)).thenReturn(5.0); |
| when(results.getDouble(2)).thenReturn(7.0); |
| |
| splits = splitter.split(configuration, results, "column1"); |
| assertSplits(new String[] {"column1 >= 5.0 column1 < 6.0", |
| "column1 >= 6.0 column1 <= 7.0"}, splits); |
| } |
| |
| @Test(timeout=2000) |
| public void testBigDecimalSplitter() throws Exception{ |
| BigDecimalSplitter splitter = new BigDecimalSplitter(); |
| ResultSet result = mock(ResultSet.class); |
| |
| List<InputSplit> splits = splitter.split(configuration, result, "column"); |
| assertSplits(new String[] {".*column IS NULL"}, splits); |
| |
| when(result.getString(1)).thenReturn("result1"); |
| when(result.getString(2)).thenReturn("result2"); |
| when(result.getBigDecimal(1)).thenReturn(new BigDecimal(10)); |
| when(result.getBigDecimal(2)).thenReturn(new BigDecimal(12)); |
| |
| splits = splitter.split(configuration, result, "column1"); |
| assertSplits(new String[] {"column1 >= 10 column1 < 11", |
| "column1 >= 11 column1 <= 12"}, splits); |
| } |
| |
| @Test(timeout=2000) |
| public void testIntegerSplitter() throws Exception{ |
| IntegerSplitter splitter = new IntegerSplitter(); |
| ResultSet result = mock(ResultSet.class); |
| |
| List<InputSplit> splits = splitter.split(configuration, result, "column"); |
| assertSplits(new String[] {".*column IS NULL"}, splits); |
| |
| when(result.getString(1)).thenReturn("result1"); |
| when(result.getString(2)).thenReturn("result2"); |
| when(result.getLong(1)).thenReturn(8L); |
| when(result.getLong(2)).thenReturn(19L); |
| |
| splits = splitter.split(configuration, result, "column1"); |
| assertSplits(new String[] {"column1 >= 8 column1 < 13", |
| "column1 >= 13 column1 < 18", "column1 >= 18 column1 <= 19"}, splits); |
| } |
| |
| @Test(timeout=2000) |
| public void testTextSplitter() throws Exception{ |
| TextSplitter splitter = new TextSplitter(); |
| ResultSet result = mock(ResultSet.class); |
| |
| List<InputSplit> splits = splitter.split(configuration, result, "column"); |
| assertSplits(new String[] {"column IS NULL column IS NULL"}, splits); |
| |
| when(result.getString(1)).thenReturn("result1"); |
| when(result.getString(2)).thenReturn("result2"); |
| |
| splits = splitter.split(configuration, result, "column1"); |
| assertSplits(new String[] {"column1 >= 'result1' column1 < 'result1.'", |
| "column1 >= 'result1' column1 <= 'result2'"}, splits); |
| } |
| |
| private void assertSplits(String[] expectedSplitRE, |
| List<InputSplit> splits) throws IOException { |
| assertEquals(expectedSplitRE.length, splits.size()); |
| for (int i = 0; i < expectedSplitRE.length; i++) { |
| DataDrivenDBInputSplit split = (DataDrivenDBInputSplit) splits.get(i); |
| String actualExpr = split.getLowerClause() + " " + split.getUpperClause(); |
| assertTrue("Split #" + (i+1) + " expression is wrong." |
| + " Expected " + expectedSplitRE[i] |
| + " Actual " + actualExpr, |
| Pattern.matches(expectedSplitRE[i], actualExpr)); |
| } |
| } |
| |
| } |