| 1 | /******************************************************************************
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| 2 | *
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| 3 | * A component of the Greenstone digital library software from the New Zealand
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| 4 | * Digital Library Project at the # University of Waikato, New Zealand.
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| 5 | * Copyright (C) 2006 New Zealand Digital Library Project
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or modify it
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| 8 | * under the terms of the GNU General Public License as published by the Free
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| 9 | * Software Foundation; either version 2 of the License, or (at your option)
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| 10 | * any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful, but
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| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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| 14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 15 | * for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License along
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| 18 | * with this program; if not, write to the Free Software Foundation, Inc.,
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| 19 | * 675 Mass Ave, Cambridge, MA 02139, USA.
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| 20 | *****************************************************************************/
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| 21 | /** @author jmt12, GSDL **/
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| 22 |
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| 23 | package org.nzdl.gsdl;
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| 24 |
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| 25 | /** Imports */
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| 26 | import org.apache.hadoop.io.Text;
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| 27 | import org.apache.hadoop.io.WritableComparable;
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| 28 | import org.apache.hadoop.io.WritableComparator;
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| 29 |
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| 30 | /** @class GSGroupingComparator
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| 31 | */
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| 32 | public class GSGroupingComparator
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| 33 | extends WritableComparator
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| 34 | {
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| 35 |
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| 36 | /** @function constructor
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| 37 | */
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| 38 | public GSGroupingComparator()
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| 39 | {
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| 40 | super(Text.class, true);
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| 41 | }
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| 42 | /** constructor **/
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| 43 |
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| 44 |
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| 45 | /** @function compare(WritableComparable, WritableComparable)
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| 46 | */
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| 47 | @Override
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| 48 | public int compare(WritableComparable w1, WritableComparable w2)
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| 49 | {
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| 50 | String s1 = w1.toString();
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| 51 | String[] s1_parts = s1.split(" ");
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| 52 | Text t1 = new Text(s1_parts[0]);
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| 53 | String s2 = w2.toString();
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| 54 | String[] s2_parts = s2.split(" ");
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| 55 | Text t2 = new Text(s2_parts[0]);
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| 56 | return t1.compareTo(t2);
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| 57 | }
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| 58 | /** compare(WritableComparable, WritableComparable) **/
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| 59 |
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| 60 | }
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| 61 | /** class GSGroupingComparator **/ |
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