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1
4 package com.openedit.modules.search;
5
6 import java.io.IOException  ;
7 import java.text.ParseException ;
8 import java.text.SimpleDateFormat ;
9 import java.util.Date ;
10 import java.util.Iterator ;
11
12 import org.apache.lucene.document.DateTools;
13 import org.apache.lucene.document.Document;
14 import org.apache.lucene.search.Hit;
15 import org.apache.lucene.search.Hits;
16
17 import com.openedit.OpenEditRuntimeException;
18 import com.openedit.hittracker.HitTracker;
19 import com.openedit.hittracker.SearchQuery;
20
21
22
26 public class LuceneHitTracker extends HitTracker
27 {
28 protected Hits fieldHits;
29
30 public LuceneHitTracker()
31 {
32
33 }
34
35 public LuceneHitTracker(Hits inHits)
36 {
37 setHits(inHits);
38 }
39
40 public Hits getHits()
41 {
42 return fieldHits;
43 }
44
45 public void setHits(Hits inHits)
46 {
47 fieldHits = inHits;
48 }
49
50 public int getTotal()
51 {
52 if ( getHits() == null )
53 {
54 return 0;
55 }
56 else
57 {
58 return getHits().length();
59 }
60 }
61
62 public Object get(int count)
63 {
64 try
65 {
66 return getHits().doc(count);
67 }
68 catch ( IOException ex)
69 {
70 throw new OpenEditRuntimeException(ex);
71 }
72 }
73
74 public Iterator getAllHits()
75 {
76 return new HitIterator( getHits());
77 }
78
79 public String toDate(String inValue)
80 {
81 if ( inValue == null)
82 {
83 return null;
84 }
85 Date date = null;
86 try
87 {
88 date = DateTools.stringToDate(inValue);
89 }
90 catch (ParseException ex)
91 {
92 throw new OpenEditRuntimeException(ex);
93 }
94 return SimpleDateFormat.getDateInstance(SimpleDateFormat.SHORT).format(date);
95 }
96
97 public Integer findSelf( String inId) throws Exception
98 {
99 if( inId == null)
100 {
101 return null;
102 }
103 for (int i = 0; i < getTotal(); i++)
104 {
105 Document hit = (Document)get(i);
106 if ( inId.equals( hit.get("id")))
107 {
108 return new Integer (i);
109 }
110 }
111 return null;
112 }
113
114 public String previousId(String inId) throws Exception
115 {
116 Integer row = findSelf(inId);
117 if ( row != null && row.intValue() - 1 >= 0)
118 {
119 Document hit = (Document)get( row.intValue() - 1);
120 return hit.get("id");
121 }
122 return null;
123 }
124 public String nextId(String inId) throws Exception
125 {
126 Integer row = findSelf(inId);
127 if ( row != null && row.intValue() + 1 < getTotal())
128 {
129 Document hit = (Document)get( row.intValue() + 1);
130 return hit.get("id");
131 }
132 return null;
133 }
134
135 public boolean contains(Object inHit)
136 {
137 for (int i = 0; i < getTotal(); i++)
138 {
139 Document hit = (Document)get(i);
140 if ( hit.equals( inHit ) )
141 {
142 return true;
143 }
144 }
145 return false;
146 }
147
148
149 }
150 |
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