[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.lib; |
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| 19 | |
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| 20 | import org.apache.commons.logging.Log; |
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| 21 | import org.apache.commons.logging.LogFactory; |
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| 22 | |
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| 23 | import junit.framework.TestCase; |
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| 24 | |
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| 25 | public class TestKeyFieldHelper extends TestCase { |
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| 26 | private static final Log LOG = LogFactory.getLog(TestKeyFieldHelper.class); |
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| 27 | /** |
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| 28 | * Test is key-field-helper's parse option. |
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| 29 | */ |
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| 30 | public void testparseOption() throws Exception { |
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| 31 | KeyFieldHelper helper = new KeyFieldHelper(); |
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| 32 | helper.setKeyFieldSeparator("\t"); |
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| 33 | String keySpecs = "-k1.2,3.4"; |
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| 34 | String eKeySpecs = keySpecs; |
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| 35 | helper.parseOption(keySpecs); |
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| 36 | String actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 37 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 38 | |
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| 39 | // test -k a.b |
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| 40 | keySpecs = "-k 1.2"; |
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| 41 | eKeySpecs = "-k1.2,0.0"; |
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| 42 | helper = new KeyFieldHelper(); |
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| 43 | helper.parseOption(keySpecs); |
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| 44 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 45 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 46 | |
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| 47 | keySpecs = "-nr -k1.2,3.4"; |
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| 48 | eKeySpecs = "-k1.2,3.4nr"; |
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| 49 | helper = new KeyFieldHelper(); |
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| 50 | helper.parseOption(keySpecs); |
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| 51 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 52 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 53 | |
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| 54 | keySpecs = "-nr -k1.2,3.4n"; |
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| 55 | eKeySpecs = "-k1.2,3.4n"; |
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| 56 | helper = new KeyFieldHelper(); |
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| 57 | helper.parseOption(keySpecs); |
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| 58 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 59 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 60 | |
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| 61 | keySpecs = "-nr -k1.2,3.4r"; |
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| 62 | eKeySpecs = "-k1.2,3.4r"; |
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| 63 | helper = new KeyFieldHelper(); |
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| 64 | helper.parseOption(keySpecs); |
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| 65 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 66 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 67 | |
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| 68 | keySpecs = "-nr -k1.2,3.4 -k5.6,7.8n -k9.10,11.12r -k13.14,15.16nr"; |
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| 69 | //1st |
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| 70 | eKeySpecs = "-k1.2,3.4nr"; |
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| 71 | helper = new KeyFieldHelper(); |
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| 72 | helper.parseOption(keySpecs); |
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| 73 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 74 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 75 | // 2nd |
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| 76 | eKeySpecs = "-k5.6,7.8n"; |
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| 77 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 78 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 79 | //3rd |
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| 80 | eKeySpecs = "-k9.10,11.12r"; |
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| 81 | actKeySpecs = helper.keySpecs().get(2).toString(); |
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| 82 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 83 | //4th |
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| 84 | eKeySpecs = "-k13.14,15.16nr"; |
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| 85 | actKeySpecs = helper.keySpecs().get(3).toString(); |
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| 86 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 87 | |
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| 88 | keySpecs = "-k1.2n,3.4"; |
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| 89 | eKeySpecs = "-k1.2,3.4n"; |
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| 90 | helper = new KeyFieldHelper(); |
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| 91 | helper.parseOption(keySpecs); |
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| 92 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 93 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 94 | |
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| 95 | keySpecs = "-k1.2r,3.4"; |
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| 96 | eKeySpecs = "-k1.2,3.4r"; |
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| 97 | helper = new KeyFieldHelper(); |
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| 98 | helper.parseOption(keySpecs); |
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| 99 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 100 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 101 | |
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| 102 | keySpecs = "-k1.2nr,3.4"; |
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| 103 | eKeySpecs = "-k1.2,3.4nr"; |
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| 104 | helper = new KeyFieldHelper(); |
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| 105 | helper.parseOption(keySpecs); |
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| 106 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 107 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 108 | |
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| 109 | keySpecs = "-k1.2,3.4n"; |
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| 110 | eKeySpecs = "-k1.2,3.4n"; |
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| 111 | helper = new KeyFieldHelper(); |
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| 112 | helper.parseOption(keySpecs); |
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| 113 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 114 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 115 | |
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| 116 | keySpecs = "-k1.2,3.4r"; |
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| 117 | eKeySpecs = "-k1.2,3.4r"; |
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| 118 | helper = new KeyFieldHelper(); |
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| 119 | helper.parseOption(keySpecs); |
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| 120 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 121 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 122 | |
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| 123 | keySpecs = "-k1.2,3.4nr"; |
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| 124 | eKeySpecs = "-k1.2,3.4nr"; |
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| 125 | helper = new KeyFieldHelper(); |
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| 126 | helper.parseOption(keySpecs); |
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| 127 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 128 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 129 | |
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| 130 | keySpecs = "-nr -k1.2,3.4 -k5.6,7.8"; |
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| 131 | eKeySpecs = "-k1.2,3.4nr"; |
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| 132 | helper = new KeyFieldHelper(); |
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| 133 | helper.parseOption(keySpecs); |
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| 134 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 135 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 136 | eKeySpecs = "-k5.6,7.8nr"; |
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| 137 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 138 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 139 | |
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| 140 | keySpecs = "-n -k1.2,3.4 -k5.6,7.8"; |
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| 141 | eKeySpecs = "-k1.2,3.4n"; |
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| 142 | helper = new KeyFieldHelper(); |
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| 143 | helper.parseOption(keySpecs); |
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| 144 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 145 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 146 | eKeySpecs = "-k5.6,7.8n"; |
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| 147 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 148 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 149 | |
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| 150 | keySpecs = "-r -k1.2,3.4 -k5.6,7.8"; |
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| 151 | eKeySpecs = "-k1.2,3.4r"; |
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| 152 | helper = new KeyFieldHelper(); |
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| 153 | helper.parseOption(keySpecs); |
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| 154 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 155 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 156 | eKeySpecs = "-k5.6,7.8r"; |
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| 157 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 158 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 159 | |
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| 160 | keySpecs = "-k1.2,3.4n -k5.6,7.8"; |
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| 161 | eKeySpecs = "-k1.2,3.4n"; |
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| 162 | helper = new KeyFieldHelper(); |
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| 163 | helper.parseOption(keySpecs); |
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| 164 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 165 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 166 | eKeySpecs = "-k5.6,7.8"; |
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| 167 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 168 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 169 | |
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| 170 | keySpecs = "-k1.2,3.4r -k5.6,7.8"; |
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| 171 | eKeySpecs = "-k1.2,3.4r"; |
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| 172 | helper = new KeyFieldHelper(); |
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| 173 | helper.parseOption(keySpecs); |
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| 174 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 175 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 176 | eKeySpecs = "-k5.6,7.8"; |
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| 177 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 178 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 179 | |
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| 180 | keySpecs = "-k1.2,3.4nr -k5.6,7.8"; |
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| 181 | eKeySpecs = "-k1.2,3.4nr"; |
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| 182 | helper = new KeyFieldHelper(); |
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| 183 | helper.parseOption(keySpecs); |
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| 184 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 185 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 186 | eKeySpecs = "-k5.6,7.8"; |
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| 187 | actKeySpecs = helper.keySpecs().get(1).toString(); |
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| 188 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 189 | |
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| 190 | keySpecs = "-n"; |
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| 191 | eKeySpecs = "-k1.1,0.0n"; |
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| 192 | helper = new KeyFieldHelper(); |
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| 193 | helper.parseOption(keySpecs); |
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| 194 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 195 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 196 | |
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| 197 | keySpecs = "-r"; |
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| 198 | eKeySpecs = "-k1.1,0.0r"; |
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| 199 | helper = new KeyFieldHelper(); |
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| 200 | helper.parseOption(keySpecs); |
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| 201 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 202 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 203 | |
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| 204 | keySpecs = "-nr"; |
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| 205 | eKeySpecs = "-k1.1,0.0nr"; |
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| 206 | helper = new KeyFieldHelper(); |
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| 207 | helper.parseOption(keySpecs); |
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| 208 | actKeySpecs = helper.keySpecs().get(0).toString(); |
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| 209 | assertEquals("KeyFieldHelper's parsing is garbled", eKeySpecs, actKeySpecs); |
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| 210 | } |
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| 211 | |
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| 212 | /** |
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| 213 | * Test is key-field-helper's getWordLengths. |
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| 214 | */ |
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| 215 | public void testGetWordLengths() throws Exception { |
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| 216 | KeyFieldHelper helper = new KeyFieldHelper(); |
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| 217 | helper.setKeyFieldSeparator("\t"); |
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| 218 | // test getWordLengths with unspecified key-specifications |
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| 219 | String input = "hi"; |
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| 220 | int[] result = helper.getWordLengths(input.getBytes(), 0, 2); |
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| 221 | assertTrue(equals(result, new int[] {1})); |
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| 222 | |
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| 223 | // set the key specs |
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| 224 | helper.setKeyFieldSpec(1, 2); |
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| 225 | |
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| 226 | // test getWordLengths with 3 words |
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| 227 | input = "hi\thello there"; |
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| 228 | result = helper.getWordLengths(input.getBytes(), 0, input.length()); |
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| 229 | assertTrue(equals(result, new int[] {2, 2, 11})); |
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| 230 | |
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| 231 | // test getWordLengths with 4 words but with a different separator |
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| 232 | helper.setKeyFieldSeparator(" "); |
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| 233 | input = "hi hello\tthere you"; |
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| 234 | result = helper.getWordLengths(input.getBytes(), 0, input.length()); |
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| 235 | assertTrue(equals(result, new int[] {3, 2, 11, 3})); |
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| 236 | |
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| 237 | // test with non zero start index |
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| 238 | input = "hi hello there you where me there"; |
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| 239 | // ..................... |
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| 240 | result = helper.getWordLengths(input.getBytes(), 10, 33); |
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| 241 | assertTrue(equals(result, new int[] {5, 4, 3, 5, 2, 3})); |
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| 242 | |
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| 243 | input = "hi hello there you where me "; |
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| 244 | // .................. |
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| 245 | result = helper.getWordLengths(input.getBytes(), 10, input.length()); |
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| 246 | assertTrue(equals(result, new int[] {5, 4, 3, 5, 2, 0})); |
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| 247 | |
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| 248 | input = ""; |
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| 249 | result = helper.getWordLengths(input.getBytes(), 0, 0); |
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| 250 | assertTrue(equals(result, new int[] {1, 0})); |
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| 251 | |
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| 252 | input = " abc"; |
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| 253 | result = helper.getWordLengths(input.getBytes(), 0, 5); |
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| 254 | assertTrue(equals(result, new int[] {3, 0, 0, 3})); |
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| 255 | |
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| 256 | input = " abc"; |
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| 257 | result = helper.getWordLengths(input.getBytes(), 0, 2); |
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| 258 | assertTrue(equals(result, new int[] {3, 0, 0, 0})); |
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| 259 | |
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| 260 | input = " abc "; |
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| 261 | result = helper.getWordLengths(input.getBytes(), 0, 2); |
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| 262 | assertTrue(equals(result, new int[] {2, 0, 1})); |
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| 263 | |
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| 264 | helper.setKeyFieldSeparator("abcd"); |
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| 265 | input = "abc"; |
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| 266 | result = helper.getWordLengths(input.getBytes(), 0, 3); |
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| 267 | assertTrue(equals(result, new int[] {1, 3})); |
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| 268 | } |
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| 269 | |
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| 270 | /** |
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| 271 | * Test is key-field-helper's getStartOffset/getEndOffset. |
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| 272 | */ |
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| 273 | public void testgetStartEndOffset() throws Exception { |
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| 274 | KeyFieldHelper helper = new KeyFieldHelper(); |
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| 275 | helper.setKeyFieldSeparator("\t"); |
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| 276 | // test getStartOffset with -k1,2 |
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| 277 | helper.setKeyFieldSpec(1, 2); |
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| 278 | String input = "hi\thello"; |
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| 279 | String expectedOutput = input; |
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| 280 | testKeySpecs(input, expectedOutput, helper); |
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| 281 | |
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| 282 | // test getStartOffset with -k1.0,0 .. should result into start = -1 |
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| 283 | helper = new KeyFieldHelper(); |
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| 284 | helper.setKeyFieldSeparator("\t"); |
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| 285 | helper.parseOption("-k1.0,0"); |
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| 286 | testKeySpecs(input, null, helper); |
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| 287 | |
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| 288 | // test getStartOffset with -k1,0 |
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| 289 | helper = new KeyFieldHelper(); |
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| 290 | helper.setKeyFieldSeparator("\t"); |
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| 291 | helper.parseOption("-k1,0"); |
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| 292 | expectedOutput = input; |
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| 293 | testKeySpecs(input, expectedOutput, helper); |
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| 294 | |
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| 295 | // test getStartOffset with -k1.2,0 |
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| 296 | helper = new KeyFieldHelper(); |
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| 297 | helper.setKeyFieldSeparator("\t"); |
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| 298 | helper.parseOption("-k1.2,0"); |
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| 299 | expectedOutput = "i\thello"; |
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| 300 | testKeySpecs(input, expectedOutput, helper); |
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| 301 | |
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| 302 | // test getWordLengths with -k1.0,2.3 |
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| 303 | helper = new KeyFieldHelper(); |
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| 304 | helper.setKeyFieldSeparator("\t"); |
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| 305 | helper.parseOption("-k1.1,2.3"); |
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| 306 | expectedOutput = "hi\thel"; |
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| 307 | testKeySpecs(input, expectedOutput, helper); |
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| 308 | |
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| 309 | // test getWordLengths with -k1.2,2.3 |
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| 310 | helper = new KeyFieldHelper(); |
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| 311 | helper.setKeyFieldSeparator("\t"); |
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| 312 | helper.parseOption("-k1.2,2.3"); |
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| 313 | expectedOutput = "i\thel"; |
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| 314 | testKeySpecs(input, expectedOutput, helper); |
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| 315 | |
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| 316 | // test getStartOffset with -k1.2,3.0 |
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| 317 | helper = new KeyFieldHelper(); |
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| 318 | helper.setKeyFieldSeparator("\t"); |
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| 319 | helper.parseOption("-k1.2,3.0"); |
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| 320 | expectedOutput = "i\thello"; |
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| 321 | testKeySpecs(input, expectedOutput, helper); |
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| 322 | |
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| 323 | // test getStartOffset with -k2,2 |
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| 324 | helper = new KeyFieldHelper(); |
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| 325 | helper.setKeyFieldSeparator("\t"); |
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| 326 | helper.parseOption("-k2,2"); |
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| 327 | expectedOutput = "hello"; |
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| 328 | testKeySpecs(input, expectedOutput, helper); |
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| 329 | |
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| 330 | // test getStartOffset with -k3.0,4.0 |
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| 331 | helper = new KeyFieldHelper(); |
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| 332 | helper.setKeyFieldSeparator("\t"); |
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| 333 | helper.parseOption("-k3.1,4.0"); |
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| 334 | testKeySpecs(input, null, helper); |
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| 335 | |
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| 336 | // test getStartOffset with -k2.1 |
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| 337 | helper = new KeyFieldHelper(); |
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| 338 | input = "123123123123123hi\thello\thow"; |
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| 339 | helper.setKeyFieldSeparator("\t"); |
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| 340 | helper.parseOption("-k2.1"); |
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| 341 | expectedOutput = "hello\thow"; |
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| 342 | testKeySpecs(input, expectedOutput, helper, 15, input.length()); |
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| 343 | |
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| 344 | // test getStartOffset with -k2.1,4 with end ending on \t |
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| 345 | helper = new KeyFieldHelper(); |
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| 346 | input = "123123123123123hi\thello\t\thow\tare"; |
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| 347 | helper.setKeyFieldSeparator("\t"); |
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| 348 | helper.parseOption("-k2.1,3"); |
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| 349 | expectedOutput = "hello\t"; |
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| 350 | testKeySpecs(input, expectedOutput, helper, 17, input.length()); |
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| 351 | |
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| 352 | // test getStartOffset with -k2.1 with end ending on \t |
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| 353 | helper = new KeyFieldHelper(); |
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| 354 | input = "123123123123123hi\thello\thow\tare"; |
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| 355 | helper.setKeyFieldSeparator("\t"); |
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| 356 | helper.parseOption("-k2.1"); |
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| 357 | expectedOutput = "hello\thow\t"; |
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| 358 | testKeySpecs(input, expectedOutput, helper, 17, 28); |
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| 359 | |
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| 360 | // test getStartOffset with -k2.1,3 with smaller length |
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| 361 | helper = new KeyFieldHelper(); |
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| 362 | input = "123123123123123hi\thello\thow"; |
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| 363 | helper.setKeyFieldSeparator("\t"); |
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| 364 | helper.parseOption("-k2.1,3"); |
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| 365 | expectedOutput = "hello"; |
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| 366 | testKeySpecs(input, expectedOutput, helper, 15, 23); |
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| 367 | } |
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| 368 | |
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| 369 | private void testKeySpecs(String input, String expectedOutput, |
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| 370 | KeyFieldHelper helper) { |
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| 371 | testKeySpecs(input, expectedOutput, helper, 0, -1); |
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| 372 | } |
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| 373 | |
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| 374 | private void testKeySpecs(String input, String expectedOutput, |
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| 375 | KeyFieldHelper helper, int s1, int e1) { |
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| 376 | LOG.info("input : " + input); |
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| 377 | String keySpecs = helper.keySpecs().get(0).toString(); |
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| 378 | LOG.info("keyspecs : " + keySpecs); |
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| 379 | byte[] inputBytes = input.getBytes(); // get the input bytes |
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| 380 | if (e1 == -1) { |
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| 381 | e1 = inputBytes.length; |
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| 382 | } |
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| 383 | LOG.info("length : " + e1); |
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| 384 | // get the word lengths |
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| 385 | int[] indices = helper.getWordLengths(inputBytes, s1, e1); |
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| 386 | // get the start index |
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| 387 | int start = helper.getStartOffset(inputBytes, s1, e1, indices, |
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| 388 | helper.keySpecs().get(0)); |
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| 389 | LOG.info("start : " + start); |
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| 390 | if (expectedOutput == null) { |
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| 391 | assertEquals("Expected -1 when the start index is invalid", -1, start); |
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| 392 | return; |
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| 393 | } |
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| 394 | // get the end index |
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| 395 | int end = helper.getEndOffset(inputBytes, s1, e1, indices, |
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| 396 | helper.keySpecs().get(0)); |
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| 397 | LOG.info("end : " + end); |
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| 398 | //my fix |
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| 399 | end = (end >= inputBytes.length) ? inputBytes.length -1 : end; |
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| 400 | int length = end + 1 - start; |
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| 401 | LOG.info("length : " + length); |
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| 402 | byte[] outputBytes = new byte[length]; |
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| 403 | System.arraycopy(inputBytes, start, outputBytes, 0, length); |
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| 404 | String output = new String(outputBytes); |
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| 405 | LOG.info("output : " + output); |
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| 406 | LOG.info("expected-output : " + expectedOutput); |
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| 407 | assertEquals(keySpecs + " failed on input '" + input + "'", |
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| 408 | expectedOutput, output); |
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| 409 | } |
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| 410 | |
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| 411 | // check for equality of 2 int arrays |
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| 412 | private boolean equals(int[] test, int[] expected) { |
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| 413 | // check array length |
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| 414 | if (test[0] != expected[0]) { |
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| 415 | return false; |
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| 416 | } |
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| 417 | // if length is same then check the contents |
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| 418 | for (int i = 0; i < test[0] && i < expected[0]; ++i) { |
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| 419 | if (test[i] != expected[i]) { |
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| 420 | return false; |
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| 421 | } |
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| 422 | } |
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| 423 | return true; |
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| 424 | } |
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| 425 | } |
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