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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2001 Intersect Software Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/
package net.wotonomy.control;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import net.wotonomy.foundation.NSArray;
import net.wotonomy.foundation.NSDictionary;
import net.wotonomy.foundation.NSMutableArray;
import net.wotonomy.foundation.internal.WotonomyException;
/**
* EOAndQualifier contains other EOQualifiers, evaluating as true only if all of
* the contained qualifiers evaluate as true.
*
* @author michael@mpowers.net
* @author yjcheung@intersectsoft.com
* @author $Author: cgruber $
* @version $Revision: 894 $
*/
public class EOAndQualifier extends EOQualifier implements EOKeyValueArchiving, EOQualifierEvaluation {
private List qualifiers;
public EOAndQualifier(List aQualifierList) {
qualifiers = new LinkedList(aQualifierList);
}
/**
* Returns a List of qualifiers contained by this qualifier.
*/
public NSArray qualifiers() {
return new NSArray(qualifiers);
}
/**
* Add a new qualifier to the list.
*/
public void addQualifier(EOQualifier qualifier) {
qualifiers.add(qualifier);
}
/**
* Evaluates this qualifier for the specified object, and returns whether the
* object is qualified. selector() is invoked on the value for key() on the
* specified object, with value() as the parameter.
*
* Note: this has the lazy "and" implementation. Ex. Qal1 and Qal2. If the Qal1
* is evaluated to be false, then it returns false without evaluating Qa12.
*/
public boolean evaluateWithObject(Object anObject) {
boolean retVal = true;
Iterator it = qualifiers.iterator();
while (it.hasNext() && retVal) {
retVal = ((EOQualifier) it.next()).evaluateWithObject(anObject);
}
return retVal;
}
/**
* Returns a string representation of this qualifier.
*/
public String toString() {
StringBuffer myBuf = new StringBuffer("(");
Iterator it = qualifiers.iterator();
while (it.hasNext()) {
myBuf = myBuf.append(((EOQualifier) it.next()).toString()).append(" and ");
}
String myStr = myBuf.toString();
myStr = myStr.substring(0, myStr.lastIndexOf(" and")).concat(")");
return myStr;
}
public static Object decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver arch) {
NSArray a = (NSArray) arch.decodeObjectForKey("qualifiers");
if (a == null)
return null;
NSMutableArray l = new NSMutableArray();
for (int i = 0; i < a.count(); i++) {
NSDictionary d = (NSDictionary) a.objectAtIndex(i);
EOKeyValueUnarchiver ua = new EOKeyValueUnarchiver(d);
EOQualifier q = (EOQualifier) EOQualifier.decodeWithKeyValueUnarchiver(ua);
if (q != null)
l.addObject(q);
}
return new EOAndQualifier(l);
}
public void encodeWithKeyValueArchiver(EOKeyValueArchiver arch) {
arch.encodeObject("EOAndQualifier", "class");
NSMutableArray arr = new NSMutableArray(qualifiers.size());
for (int i = 0; i < qualifiers.size(); i++) {
EOQualifier q = (EOQualifier) qualifiers.get(i);
if (q instanceof EOKeyValueArchiving) {
EOKeyValueArchiver ar2 = new EOKeyValueArchiver();
((EOKeyValueArchiving) q).encodeWithKeyValueArchiver(ar2);
arr.addObject(ar2.dictionary());
} else
throw new WotonomyException("Cannot archive instance of " + q.getClass().getName());
}
arch.encodeObject(arr, "qualifiers");
}
}
/*
* $Log$ Revision 1.2 2006/02/16 16:47:14 cgruber Move some classes in to
* "internal" packages and re-work imports, etc.
*
* Also use UnsupportedOperationExceptions where appropriate, instead of
* WotonomyExceptions.
*
* Revision 1.1 2006/02/16 13:19:57 cgruber Check in all sources in
* eclipse-friendly maven-enabled packages.
*
* Revision 1.6 2003/08/12 01:43:04 chochos formally implement
* EOQualifierEvaluation
*
* Revision 1.5 2003/08/09 01:22:51 chochos qualifiers implement
* EOKeyValueArchiving
*
* Revision 1.4 2003/08/06 23:07:52 chochos general code cleanup (mostly,
* removing unused imports)
*
* Revision 1.3 2001/10/31 15:25:14 mpowers Cleanup of qualifiers.
*
* Revision 1.2 2001/10/30 22:57:28 mpowers EOQualifier framework is now
* working.
*
* Revision 1.1 2001/09/13 15:25:56 mpowers Started implementation of the
* EOQualifier framework.
*
*
*/
|
