Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
EOGenericRecord |
|
| 1.2222222222222223;1.222 |
1 | /* |
|
2 | Wotonomy: OpenStep design patterns for pure Java applications. |
|
3 | Copyright (C) 2001 Intersect Software Corporation |
|
4 | ||
5 | This library is free software; you can redistribute it and/or |
|
6 | modify it under the terms of the GNU Lesser General Public |
|
7 | License as published by the Free Software Foundation; either |
|
8 | version 2.1 of the License, or (at your option) any later version. |
|
9 | ||
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, see http://www.gnu.org |
|
17 | */ |
|
18 | ||
19 | package net.wotonomy.control; |
|
20 | ||
21 | import net.wotonomy.foundation.NSMutableDictionary; |
|
22 | import net.wotonomy.foundation.NSNull; |
|
23 | ||
24 | /** |
|
25 | * EOGenericRecord extends EOCustomObject to provide a |
|
26 | * general-purpose implementation, relying entirely on the |
|
27 | * class description for entity-specific behavior, and |
|
28 | * storing data in a dictionary. |
|
29 | * |
|
30 | * @author michael@mpowers.net |
|
31 | * @author $Author: cgruber $ |
|
32 | * @version $Revision: 894 $ |
|
33 | */ |
|
34 | public class EOGenericRecord extends EOCustomObject |
|
35 | { |
|
36 | private EOClassDescription classDescription; |
|
37 | private NSMutableDictionary dataDictionary; |
|
38 | ||
39 | /** |
|
40 | * Default constructor. |
|
41 | */ |
|
42 | 0 | protected EOGenericRecord() |
43 | 0 | { |
44 | 0 | classDescription = null; |
45 | 0 | dataDictionary = new NSMutableDictionary(); |
46 | 0 | } |
47 | ||
48 | /** |
|
49 | * Preferred constructor. |
|
50 | */ |
|
51 | public EOGenericRecord( EOClassDescription aDescription ) |
|
52 | { |
|
53 | 0 | this(); |
54 | 0 | classDescription = aDescription; |
55 | 0 | } |
56 | ||
57 | /** |
|
58 | * Overridden to return true so that deferred faults are used. |
|
59 | */ |
|
60 | public static boolean usesDeferredFaultCreation() |
|
61 | { |
|
62 | 0 | return true; |
63 | } |
|
64 | ||
65 | /** |
|
66 | * Compatibility constructor: aContext and anID are ignored. |
|
67 | */ |
|
68 | public EOGenericRecord( |
|
69 | EOEditingContext aContext, EOClassDescription aDescription, EOGlobalID anID ) |
|
70 | { |
|
71 | 0 | this( aDescription ); |
72 | 0 | } |
73 | ||
74 | /** |
|
75 | * Returns a class description for this object. |
|
76 | * Overridden to return the class description passed |
|
77 | * into the constructor. |
|
78 | */ |
|
79 | public EOClassDescription classDescription() |
|
80 | { |
|
81 | 0 | return classDescription; |
82 | } |
|
83 | ||
84 | // interface EOKeyValueCoding |
|
85 | ||
86 | /** |
|
87 | * Calls storedValueForKey. |
|
88 | */ |
|
89 | public Object valueForKey( String aKey ) |
|
90 | { |
|
91 | 0 | return storedValueForKey( aKey ); |
92 | } |
|
93 | ||
94 | /** |
|
95 | * Calls willChange and then calls takeStoredValueForKey. |
|
96 | */ |
|
97 | public void takeValueForKey( Object aValue, String aKey ) |
|
98 | { |
|
99 | 0 | willChange(); |
100 | 0 | takeStoredValueForKey( aValue, aKey ); |
101 | 0 | } |
102 | ||
103 | /** |
|
104 | * Calls willRead for the specified key, |
|
105 | * and returns the corresponding value from |
|
106 | * the data dictionary. Keys that do not |
|
107 | * exist will return null. |
|
108 | */ |
|
109 | public Object storedValueForKey( String aKey ) |
|
110 | { |
|
111 | 0 | willRead( aKey ); |
112 | 0 | Object result = dataDictionary.objectForKey( aKey ); |
113 | 0 | if ( NSNull.nullValue().equals( result ) ) result = null; |
114 | 0 | return result; |
115 | } |
|
116 | ||
117 | /** |
|
118 | * Writes the specified value into the data dictionary |
|
119 | * for the specified key. Nulls are stored as NSNulls |
|
120 | * in the dictionary. |
|
121 | * No checking is performed to determine whether the |
|
122 | * key is a valid attribute key. |
|
123 | */ |
|
124 | public void takeStoredValueForKey( Object aValue, String aKey ) |
|
125 | { |
|
126 | 0 | if ( aValue == null ) aValue = NSNull.nullValue(); |
127 | 0 | dataDictionary.setObjectForKey( aValue, aKey ); |
128 | 0 | } |
129 | ||
130 | } |
|
131 | ||
132 | /* |
|
133 | * $Log$ |
|
134 | * Revision 1.2 2006/02/16 16:47:14 cgruber |
|
135 | * Move some classes in to "internal" packages and re-work imports, etc. |
|
136 | * |
|
137 | * Also use UnsupportedOperationExceptions where appropriate, instead of WotonomyExceptions. |
|
138 | * |
|
139 | * Revision 1.1 2006/02/16 13:19:57 cgruber |
|
140 | * Check in all sources in eclipse-friendly maven-enabled packages. |
|
141 | * |
|
142 | * Revision 1.2 2003/08/06 23:07:52 chochos |
|
143 | * general code cleanup (mostly, removing unused imports) |
|
144 | * |
|
145 | * Revision 1.1 2001/11/18 18:57:10 mpowers |
|
146 | * Implemented EOGenericRecord. |
|
147 | * |
|
148 | * |
|
149 | */ |
|
150 | ||
151 |