| /** |
| * 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.pig.piggybank.test.storage; |
| |
| import java.io.File; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.pig.piggybank.storage.partition.PathPartitioner; |
| import org.apache.pig.test.Util; |
| import org.junit.Test; |
| |
| /** |
| * |
| * Tests that the PathPartitioner can:<br/> |
| * <ul> |
| * <li>Read keys from a partitioned file path</li> |
| * <li>Read keys and values from a partitioned file path</li> |
| * </ul> |
| * |
| */ |
| public class TestPathPartitioner extends TestCase { |
| |
| private static Configuration conf = null; |
| |
| File baseDir; |
| File partition1; |
| File partition2; |
| File partition3; |
| |
| @Override |
| protected void tearDown() throws Exception { |
| |
| Util.deleteDirectory(baseDir); |
| |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| conf = new Configuration(false); |
| conf.addResource("core-default.xml"); |
| |
| baseDir = createDir(null, |
| "testPathPartitioner-testGetKeys-" + System.currentTimeMillis()); |
| |
| partition1 = createDir(baseDir, "year=2010"); |
| partition2 = createDir(partition1, "month=01"); |
| partition3 = createDir(partition2, "day=01"); |
| |
| File file = new File(partition3, "testfile-" |
| + System.currentTimeMillis()); |
| file.createNewFile(); |
| |
| } |
| |
| @Test |
| public void testGetKeyValues() throws Exception { |
| PathPartitioner partitioner = new PathPartitioner(); |
| |
| Map<String, String> map = partitioner |
| .getPathPartitionKeyValues(partition3.getAbsolutePath().replaceAll("\\\\", "/")); |
| |
| String[] keys = map.keySet().toArray(new String[] {}); |
| |
| assertEquals("2010", map.get(keys[0])); |
| assertEquals("01", map.get(keys[1])); |
| assertEquals("01", map.get(keys[2])); |
| |
| } |
| |
| @Test |
| public void testGetKeys() throws Exception { |
| |
| PathPartitioner pathPartitioner = new PathPartitioner(); |
| Set<String> keys = pathPartitioner.getPartitionKeys( |
| baseDir.getAbsolutePath(), conf); |
| |
| assertNotNull(keys); |
| assertEquals(3, keys.size()); |
| |
| String[] keyArr = keys.toArray(new String[] {}); |
| |
| assertEquals("year", keyArr[0]); |
| assertEquals("month", keyArr[1]); |
| assertEquals("day", keyArr[2]); |
| |
| } |
| |
| @Test |
| public void testGetKeysForEmptyDir() throws Exception { |
| |
| File baseDir = createDir(null, "testPathPartitioner-testGetKeys-" + System.currentTimeMillis()); |
| |
| File partition1 = createDir(baseDir, "year=2010"); |
| File partition2 = createDir(partition1, "month=01"); |
| File emptyPartition = createDir(partition2, "day=01"); |
| |
| PathPartitioner pathPartitioner = new PathPartitioner(); |
| Set<String> keys = pathPartitioner.getPartitionKeys(baseDir.getAbsolutePath(), conf); |
| |
| assertNotNull(keys); |
| assertEquals(3, keys.size()); |
| |
| String[] keyArr = keys.toArray(new String[] {}); |
| |
| assertEquals("year", keyArr[0]); |
| assertEquals("month", keyArr[1]); |
| assertEquals("day", keyArr[2]); |
| |
| } |
| |
| private File createDir(File parent, String name) { |
| File file = new File(parent, name); |
| file.mkdirs(); |
| return file; |
| } |
| |
| } |