Source code: org/nzdl/gsdl/Phind/ResultItemLink.java
1 /**********************************************************************
2 *
3 * ResultItemLink.java -- a thesaurus link in the Phind applet
4 *
5 * Copyright 2000 Gordon W. Paynter
6 * Copyright 2000 The New Zealand Digital Library Project
7 *
8 * A component of the Greenstone digital library software
9 * from the New Zealand Digital Library Project at the
10 * University of Waikato, New Zealand.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 *********************************************************************/
27
28 /*********************************************************************
29
30 This class is used in the Phind java applet (Phind.java).
31
32 It contains information describing a thesaurus link.
33
34 **********************************************************************/
35
36 package org.nzdl.gsdl.Phind;
37
38 public class ResultItemLink extends ResultItem {
39
40 // The phrase number, stored as a string and as a number
41 String id;
42 int symbol;
43
44 // The text of the link is stored in the inherited text field.
45
46 // The type of thesaurus link
47 String linkType;
48
49 // The total frequency is stored in the inherited frequency field.
50
51 // The document frequency of the thesaurus item
52 int documentFrequency;
53
54 // Create a ResultItem for a thesaurus link
55 ResultItemLink(String newId, String newText, String newLinkType,
56 String tf, String df) {
57
58 kind = linkItem;
59 id = newId;
60 symbol = Integer.valueOf(newId).intValue();
61 text = newText.trim();
62 sort = sortLinkItem;
63 linkType = newLinkType;
64 frequency = Integer.valueOf(tf).intValue();
65 documentFrequency = Integer.valueOf(df).intValue();
66 }
67
68 // Is this item a phrase?
69 public boolean isLink() { return true; }
70
71 // Return the text of the item components
72 public String hiddenText() { return id; }
73 public String docsText() {
74 if (documentFrequency <= 0) { return ""; }
75 else { return Integer.toString(documentFrequency); }
76 }
77 public String prefixText() {
78 if (linkType.equals("RT")) { return "Related term"; }
79 else if (linkType.equals("BT")) { return "Broader term"; }
80 else if (linkType.equals("NT")) { return "Narrower term"; }
81 else if (linkType.equals("USE")) { return "Use"; }
82 else if (linkType.startsWith("UF")) { return "Used for"; }
83 else { return linkType; }
84 }
85 }
86