[21] | 1 | /* |
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| 2 | * Cloud9: A MapReduce Library for Hadoop |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you |
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| 5 | * may not use this file except in compliance with the License. You may |
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| 6 | * obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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| 13 | * implied. See the License for the specific language governing |
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| 14 | * permissions and limitations under the License. |
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| 15 | */ |
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| 16 | |
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| 17 | package tw.org.nchc.demo; |
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| 18 | |
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| 19 | import java.io.IOException; |
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| 20 | |
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| 21 | import tw.org.nchc.tuple.Tuple; |
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| 22 | import tw.org.nchc.util.LocalTupleRecordReader; |
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| 23 | |
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| 24 | /** |
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| 25 | * Demo that illustrates how to read records from a local SequenceFile. Dumps |
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| 26 | * the contents of the SequenceFile generated by {@link DemoPackRecords2}. |
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| 27 | */ |
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| 28 | public class DemoReadPackedRecords2 { |
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| 29 | private DemoReadPackedRecords2() { |
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| 30 | } |
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| 31 | |
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| 32 | private static final Tuple tuple = new Tuple(); |
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| 33 | |
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| 34 | /** |
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| 35 | * Runs the demo. |
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| 36 | */ |
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| 37 | public static void main(String[] args) throws IOException { |
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| 38 | String file = "../umd-hadoop-dist/sample-input/bible+shakes.nopunc.packed2"; |
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| 39 | |
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| 40 | // open local records file |
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| 41 | LocalTupleRecordReader reader = new LocalTupleRecordReader(file); |
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| 42 | // iterate over all tuples |
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| 43 | while (reader.read(tuple)) { |
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| 44 | // print out each tuple |
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| 45 | System.out.println(tuple); |
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| 46 | } |
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| 47 | reader.close(); |
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| 48 | |
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| 49 | System.out.println("Read " + reader.getRecordCount() + " records."); |
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| 50 | } |
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| 51 | |
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| 52 | } |
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