01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.ejb.entity;
30:
31: import com.caucho.amber.AmberQuery;
32:
33: import java.sql.ResultSet;
34: import java.util.AbstractMap;
35: import java.util.HashMap;
36: import java.util.Set;
37:
38: /**
39: * Represents a lazy collection.
40: */
41: abstract public class CmpMapImpl extends AbstractMap {
42: private HashMap _base = new HashMap();
43: private AmberQuery _query;
44:
45: protected void fill(AmberQuery query) {
46: try {
47: _query = query;
48:
49: _base.clear();
50:
51: ResultSet rs = query.executeQuery();
52:
53: while (rs.next()) {
54: _base.put(rs.getObject(1), rs.getObject(2));
55: }
56: } catch (RuntimeException e) {
57: throw e;
58: } catch (Exception e) {
59: throw new RuntimeException(e);
60: }
61: }
62:
63: /**
64: * Returns the value for a getter.
65: */
66: protected Object getImpl(Object key) {
67: return null;
68: }
69:
70: /**
71: * Returns the entry set.
72: */
73: public Set entrySet() {
74: return _base.entrySet();
75: }
76: }
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