| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| EOGenericRecord |
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| 1.2222222222222223;1.222 |
| 1 | /* |
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| 2 | Wotonomy: OpenStep design patterns for pure Java applications. |
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| 3 | Copyright (C) 2001 Intersect Software Corporation |
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| 4 | ||
| 5 | This library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | ||
| 10 | This library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with this library; if not, see http://www.gnu.org |
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| 17 | */ |
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| 18 | ||
| 19 | package net.wotonomy.control; |
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| 20 | ||
| 21 | import net.wotonomy.foundation.NSMutableDictionary; |
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| 22 | import net.wotonomy.foundation.NSNull; |
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| 23 | ||
| 24 | /** |
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| 25 | * EOGenericRecord extends EOCustomObject to provide a |
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| 26 | * general-purpose implementation, relying entirely on the |
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| 27 | * class description for entity-specific behavior, and |
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| 28 | * storing data in a dictionary. |
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| 29 | * |
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| 30 | * @author michael@mpowers.net |
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| 31 | * @author $Author: cgruber $ |
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| 32 | * @version $Revision: 894 $ |
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| 33 | */ |
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| 34 | public class EOGenericRecord extends EOCustomObject |
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| 35 | { |
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| 36 | private EOClassDescription classDescription; |
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| 37 | private NSMutableDictionary dataDictionary; |
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| 38 | ||
| 39 | /** |
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| 40 | * Default constructor. |
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| 41 | */ |
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| 42 | 0 | protected EOGenericRecord() |
| 43 | 0 | { |
| 44 | 0 | classDescription = null; |
| 45 | 0 | dataDictionary = new NSMutableDictionary(); |
| 46 | 0 | } |
| 47 | ||
| 48 | /** |
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| 49 | * Preferred constructor. |
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| 50 | */ |
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| 51 | public EOGenericRecord( EOClassDescription aDescription ) |
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| 52 | { |
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| 53 | 0 | this(); |
| 54 | 0 | classDescription = aDescription; |
| 55 | 0 | } |
| 56 | ||
| 57 | /** |
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| 58 | * Overridden to return true so that deferred faults are used. |
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| 59 | */ |
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| 60 | public static boolean usesDeferredFaultCreation() |
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| 61 | { |
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| 62 | 0 | return true; |
| 63 | } |
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| 64 | ||
| 65 | /** |
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| 66 | * Compatibility constructor: aContext and anID are ignored. |
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| 67 | */ |
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| 68 | public EOGenericRecord( |
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| 69 | EOEditingContext aContext, EOClassDescription aDescription, EOGlobalID anID ) |
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| 70 | { |
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| 71 | 0 | this( aDescription ); |
| 72 | 0 | } |
| 73 | ||
| 74 | /** |
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| 75 | * Returns a class description for this object. |
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| 76 | * Overridden to return the class description passed |
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| 77 | * into the constructor. |
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| 78 | */ |
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| 79 | public EOClassDescription classDescription() |
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| 80 | { |
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| 81 | 0 | return classDescription; |
| 82 | } |
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| 83 | ||
| 84 | // interface EOKeyValueCoding |
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| 85 | ||
| 86 | /** |
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| 87 | * Calls storedValueForKey. |
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| 88 | */ |
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| 89 | public Object valueForKey( String aKey ) |
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| 90 | { |
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| 91 | 0 | return storedValueForKey( aKey ); |
| 92 | } |
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| 93 | ||
| 94 | /** |
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| 95 | * Calls willChange and then calls takeStoredValueForKey. |
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| 96 | */ |
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| 97 | public void takeValueForKey( Object aValue, String aKey ) |
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| 98 | { |
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| 99 | 0 | willChange(); |
| 100 | 0 | takeStoredValueForKey( aValue, aKey ); |
| 101 | 0 | } |
| 102 | ||
| 103 | /** |
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| 104 | * Calls willRead for the specified key, |
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| 105 | * and returns the corresponding value from |
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| 106 | * the data dictionary. Keys that do not |
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| 107 | * exist will return null. |
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| 108 | */ |
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| 109 | public Object storedValueForKey( String aKey ) |
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| 110 | { |
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| 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 | } |
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| 116 | ||
| 117 | /** |
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| 118 | * Writes the specified value into the data dictionary |
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| 119 | * for the specified key. Nulls are stored as NSNulls |
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| 120 | * in the dictionary. |
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| 121 | * No checking is performed to determine whether the |
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| 122 | * key is a valid attribute key. |
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| 123 | */ |
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| 124 | public void takeStoredValueForKey( Object aValue, String aKey ) |
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| 125 | { |
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| 126 | 0 | if ( aValue == null ) aValue = NSNull.nullValue(); |
| 127 | 0 | dataDictionary.setObjectForKey( aValue, aKey ); |
| 128 | 0 | } |
| 129 | ||
| 130 | } |
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| 131 | ||
| 132 | /* |
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| 133 | * $Log$ |
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| 134 | * Revision 1.2 2006/02/16 16:47:14 cgruber |
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| 135 | * Move some classes in to "internal" packages and re-work imports, etc. |
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| 136 | * |
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| 137 | * Also use UnsupportedOperationExceptions where appropriate, instead of WotonomyExceptions. |
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| 138 | * |
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| 139 | * Revision 1.1 2006/02/16 13:19:57 cgruber |
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| 140 | * Check in all sources in eclipse-friendly maven-enabled packages. |
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| 141 | * |
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| 142 | * Revision 1.2 2003/08/06 23:07:52 chochos |
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| 143 | * general code cleanup (mostly, removing unused imports) |
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| 144 | * |
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| 145 | * Revision 1.1 2001/11/18 18:57:10 mpowers |
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| 146 | * Implemented EOGenericRecord. |
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| 147 | * |
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| 148 | * |
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| 149 | */ |
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| 150 | ||
| 151 |