01: /*
02: * FindBugs - Find Bugs in Java programs
03: * Copyright (C) 2003-2007 University of Maryland
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library; if not, write to the Free Software
17: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: */
19:
20: package edu.umd.cs.findbugs.util;
21:
22: import java.util.HashMap;
23: import java.util.Map;
24:
25: /**
26: * @author pugh
27: */
28: public class TripleKeyHashMap<K1, K2, K3, V> {
29: Map<K1, DualKeyHashMap<K2, K3, V>> map = new HashMap<K1, DualKeyHashMap<K2, K3, V>>();
30:
31: public V get(K1 k1, K2 k2, K3 k3) {
32: DualKeyHashMap<K2, K3, V> m = map.get(k1);
33: if (m == null)
34: return null;
35: return m.get(k2, k3);
36: }
37:
38: public V put(K1 k1, K2 k2, K3 k3, V v) {
39: DualKeyHashMap<K2, K3, V> m = map.get(k1);
40: if (m == null) {
41: m = new DualKeyHashMap<K2, K3, V>();
42: map.put(k1, m);
43: }
44: return m.put(k2, k3, v);
45: }
46:
47: }
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