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
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.el;
import java.beans.FeatureDescriptor;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
public class ResourceBundleELResolver extends ELResolver {
public ResourceBundleELResolver() {
super();
}
@Override
public Object getValue(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ResourceBundle) {
context.setPropertyResolved(base, property);
if (property != null) {
try {
return ((ResourceBundle) base).getObject(property
.toString());
} catch (MissingResourceException mre) {
return "???" + property.toString() + "???";
}
}
}
return null;
}
@Override
public Class<?> getType(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ResourceBundle) {
context.setPropertyResolved(base, property);
}
return null;
}
@Override
public void setValue(ELContext context, Object base, Object property,
Object value) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ResourceBundle) {
context.setPropertyResolved(base, property);
throw new PropertyNotWritableException(Util.message(context,
"resolverNotWriteable", base.getClass().getName()));
}
}
@Override
public boolean isReadOnly(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ResourceBundle) {
context.setPropertyResolved(base, property);
return true;
}
return false;
}
@Override
public Iterator<FeatureDescriptor> getFeatureDescriptors(
ELContext context, Object base) {
if (base instanceof ResourceBundle) {
List<FeatureDescriptor> feats = new ArrayList<>();
Enumeration<String> e = ((ResourceBundle) base).getKeys();
FeatureDescriptor feat;
String key;
while (e.hasMoreElements()) {
key = e.nextElement();
feat = new FeatureDescriptor();
feat.setDisplayName(key);
feat.setShortDescription("");
feat.setExpert(false);
feat.setHidden(false);
feat.setName(key);
feat.setPreferred(true);
feat.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
feat.setValue(TYPE, String.class);
feats.add(feat);
}
return feats.iterator();
}
return null;
}
@Override
public Class<?> getCommonPropertyType(ELContext context, Object base) {
if (base instanceof ResourceBundle) {
return String.class;
}
return null;
}
}
|
