blob: 96cadddf53a9a4d0fdbe20e24969a33d5a68f981 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
package de.lmu.ifi.dbs.elki.database.datastore.memory;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2011
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap;
import de.lmu.ifi.dbs.elki.database.datastore.WritableDataStore;
import de.lmu.ifi.dbs.elki.database.ids.DBID;
/**
* A class to answer representation queries using the stored Array.
*
* @author Erich Schubert
*
* @apiviz.composedOf de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap
*
* @param <T> Representation object typ
*/
public class ArrayStore<T> implements WritableDataStore<T> {
/**
* Data array
*/
private Object[] data;
/**
* DBID to index map
*/
private DataStoreIDMap idmap;
/**
* Constructor.
*/
public ArrayStore(Object[] data, DataStoreIDMap idmap) {
super();
this.data = data;
this.idmap = idmap;
}
@SuppressWarnings("unchecked")
@Override
public T get(DBID id) {
try {
return (T) data[idmap.map(id)];
}
catch(ArrayIndexOutOfBoundsException e) {
return null;
}
catch(NullPointerException e) {
return null;
}
catch(ClassCastException e) {
return null;
}
}
@Override
public T put(DBID id, T value) {
T ret = get(id);
data[idmap.map(id)] = value;
return ret;
}
@Override
public void destroy() {
data = null;
idmap = null;
}
@Override
public void delete(DBID id) {
throw new UnsupportedOperationException("Can't delete from a static array storage.");
}
@Override
public String getLongName() {
return "raw";
}
@Override
public String getShortName() {
return "raw";
}
}
|
