[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.mapred.join; |
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| 19 | |
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| 20 | import java.io.ByteArrayInputStream; |
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| 21 | import java.io.ByteArrayOutputStream; |
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| 22 | import java.io.DataInputStream; |
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| 23 | import java.io.DataOutputStream; |
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| 24 | |
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| 25 | import java.util.Arrays; |
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| 26 | import java.util.Random; |
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| 27 | |
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| 28 | import junit.framework.TestCase; |
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| 29 | |
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| 30 | import org.apache.hadoop.io.BooleanWritable; |
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| 31 | import org.apache.hadoop.io.BytesWritable; |
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| 32 | import org.apache.hadoop.io.FloatWritable; |
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| 33 | import org.apache.hadoop.io.IntWritable; |
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| 34 | import org.apache.hadoop.io.LongWritable; |
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| 35 | import org.apache.hadoop.io.Text; |
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| 36 | import org.apache.hadoop.io.Writable; |
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| 37 | |
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| 38 | public class TestTupleWritable extends TestCase { |
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| 39 | |
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| 40 | private TupleWritable makeTuple(Writable[] writs) { |
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| 41 | Writable[] sub1 = { writs[1], writs[2] }; |
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| 42 | Writable[] sub3 = { writs[4], writs[5] }; |
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| 43 | Writable[] sub2 = { writs[3], new TupleWritable(sub3), writs[6] }; |
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| 44 | Writable[] vals = { writs[0], new TupleWritable(sub1), |
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| 45 | new TupleWritable(sub2), writs[7], writs[8], |
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| 46 | writs[9] }; |
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| 47 | // [v0, [v1, v2], [v3, [v4, v5], v6], v7, v8, v9] |
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| 48 | TupleWritable ret = new TupleWritable(vals); |
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| 49 | for (int i = 0; i < 6; ++i) { |
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| 50 | ret.setWritten(i); |
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| 51 | } |
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| 52 | ((TupleWritable)sub2[1]).setWritten(0); |
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| 53 | ((TupleWritable)sub2[1]).setWritten(1); |
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| 54 | ((TupleWritable)vals[1]).setWritten(0); |
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| 55 | ((TupleWritable)vals[1]).setWritten(1); |
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| 56 | for (int i = 0; i < 3; ++i) { |
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| 57 | ((TupleWritable)vals[2]).setWritten(i); |
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| 58 | } |
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| 59 | return ret; |
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| 60 | } |
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| 61 | |
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| 62 | private int verifIter(Writable[] writs, TupleWritable t, int i) { |
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| 63 | for (Writable w : t) { |
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| 64 | if (w instanceof TupleWritable) { |
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| 65 | i = verifIter(writs, ((TupleWritable)w), i); |
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| 66 | continue; |
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| 67 | } |
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| 68 | assertTrue("Bad value", w.equals(writs[i++])); |
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| 69 | } |
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| 70 | return i; |
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| 71 | } |
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| 72 | |
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| 73 | public void testIterable() throws Exception { |
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| 74 | Random r = new Random(); |
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| 75 | Writable[] writs = { |
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| 76 | new BooleanWritable(r.nextBoolean()), |
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| 77 | new FloatWritable(r.nextFloat()), |
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| 78 | new FloatWritable(r.nextFloat()), |
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| 79 | new IntWritable(r.nextInt()), |
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| 80 | new LongWritable(r.nextLong()), |
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| 81 | new BytesWritable("dingo".getBytes()), |
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| 82 | new LongWritable(r.nextLong()), |
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| 83 | new IntWritable(r.nextInt()), |
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| 84 | new BytesWritable("yak".getBytes()), |
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| 85 | new IntWritable(r.nextInt()) |
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| 86 | }; |
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| 87 | TupleWritable t = new TupleWritable(writs); |
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| 88 | for (int i = 0; i < 6; ++i) { |
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| 89 | t.setWritten(i); |
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| 90 | } |
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| 91 | verifIter(writs, t, 0); |
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| 92 | } |
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| 93 | |
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| 94 | public void testNestedIterable() throws Exception { |
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| 95 | Random r = new Random(); |
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| 96 | Writable[] writs = { |
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| 97 | new BooleanWritable(r.nextBoolean()), |
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| 98 | new FloatWritable(r.nextFloat()), |
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| 99 | new FloatWritable(r.nextFloat()), |
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| 100 | new IntWritable(r.nextInt()), |
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| 101 | new LongWritable(r.nextLong()), |
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| 102 | new BytesWritable("dingo".getBytes()), |
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| 103 | new LongWritable(r.nextLong()), |
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| 104 | new IntWritable(r.nextInt()), |
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| 105 | new BytesWritable("yak".getBytes()), |
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| 106 | new IntWritable(r.nextInt()) |
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| 107 | }; |
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| 108 | TupleWritable sTuple = makeTuple(writs); |
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| 109 | assertTrue("Bad count", writs.length == verifIter(writs, sTuple, 0)); |
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| 110 | } |
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| 111 | |
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| 112 | public void testWritable() throws Exception { |
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| 113 | Random r = new Random(); |
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| 114 | Writable[] writs = { |
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| 115 | new BooleanWritable(r.nextBoolean()), |
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| 116 | new FloatWritable(r.nextFloat()), |
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| 117 | new FloatWritable(r.nextFloat()), |
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| 118 | new IntWritable(r.nextInt()), |
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| 119 | new LongWritable(r.nextLong()), |
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| 120 | new BytesWritable("dingo".getBytes()), |
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| 121 | new LongWritable(r.nextLong()), |
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| 122 | new IntWritable(r.nextInt()), |
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| 123 | new BytesWritable("yak".getBytes()), |
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| 124 | new IntWritable(r.nextInt()) |
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| 125 | }; |
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| 126 | TupleWritable sTuple = makeTuple(writs); |
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| 127 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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| 128 | sTuple.write(new DataOutputStream(out)); |
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| 129 | ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray()); |
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| 130 | TupleWritable dTuple = new TupleWritable(); |
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| 131 | dTuple.readFields(new DataInputStream(in)); |
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| 132 | assertTrue("Failed to write/read tuple", sTuple.equals(dTuple)); |
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| 133 | } |
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| 134 | |
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| 135 | public void testWideTuple() throws Exception { |
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| 136 | Text emptyText = new Text("Should be empty"); |
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| 137 | Writable[] values = new Writable[64]; |
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| 138 | Arrays.fill(values,emptyText); |
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| 139 | values[42] = new Text("Number 42"); |
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| 140 | |
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| 141 | TupleWritable tuple = new TupleWritable(values); |
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| 142 | tuple.setWritten(42); |
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| 143 | |
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| 144 | for (int pos=0; pos<tuple.size();pos++) { |
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| 145 | boolean has = tuple.has(pos); |
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| 146 | if (pos == 42) { |
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| 147 | assertTrue(has); |
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| 148 | } |
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| 149 | else { |
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| 150 | assertFalse("Tuple position is incorrectly labelled as set: " + pos, has); |
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| 151 | } |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | public void testWideTuple2() throws Exception { |
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| 156 | Text emptyText = new Text("Should be empty"); |
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| 157 | Writable[] values = new Writable[64]; |
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| 158 | Arrays.fill(values,emptyText); |
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| 159 | values[9] = new Text("Number 9"); |
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| 160 | |
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| 161 | TupleWritable tuple = new TupleWritable(values); |
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| 162 | tuple.setWritten(9); |
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| 163 | |
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| 164 | for (int pos=0; pos<tuple.size();pos++) { |
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| 165 | boolean has = tuple.has(pos); |
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| 166 | if (pos == 9) { |
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| 167 | assertTrue(has); |
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| 168 | } |
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| 169 | else { |
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| 170 | assertFalse("Tuple position is incorrectly labelled as set: " + pos, has); |
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| 171 | } |
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| 172 | } |
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| 173 | } |
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| 174 | } |
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