1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
|
19 | |
package org.apache.myfaces.el.unified.resolver; |
20 | |
|
21 | |
import org.apache.myfaces.context.servlet.StartupServletExternalContextImpl; |
22 | |
|
23 | |
import javax.el.ELContext; |
24 | |
import javax.el.ELException; |
25 | |
import javax.el.ELResolver; |
26 | |
import javax.el.PropertyNotFoundException; |
27 | |
import javax.el.PropertyNotWritableException; |
28 | |
import javax.faces.component.UIViewRoot; |
29 | |
import javax.faces.context.ExternalContext; |
30 | |
import javax.faces.context.FacesContext; |
31 | |
import java.beans.FeatureDescriptor; |
32 | |
import java.util.ArrayList; |
33 | |
import java.util.Iterator; |
34 | |
import java.util.List; |
35 | |
import java.util.Map; |
36 | |
|
37 | |
|
38 | |
|
39 | |
|
40 | |
|
41 | |
|
42 | |
public class ScopedAttributeResolver extends ELResolver |
43 | |
{ |
44 | |
|
45 | |
|
46 | |
|
47 | |
|
48 | |
public ScopedAttributeResolver() |
49 | 0 | { |
50 | 0 | } |
51 | |
|
52 | |
@Override |
53 | |
public void setValue(final ELContext context, final Object base, final Object property, final Object value) |
54 | |
throws NullPointerException, PropertyNotFoundException, PropertyNotWritableException, ELException |
55 | |
{ |
56 | 0 | if (base != null) |
57 | |
{ |
58 | 0 | return; |
59 | |
} |
60 | |
|
61 | 0 | if (property == null) |
62 | |
{ |
63 | 0 | throw new PropertyNotFoundException(); |
64 | |
} |
65 | |
|
66 | 0 | final Map<String, Object> scopedMap = findScopedMap(facesContext(context), property); |
67 | 0 | if (scopedMap != null) |
68 | |
{ |
69 | 0 | scopedMap.put((String)property, value); |
70 | |
} |
71 | |
else |
72 | |
{ |
73 | 0 | externalContext(context).getRequestMap().put((String)property, value); |
74 | |
} |
75 | |
|
76 | 0 | context.setPropertyResolved(true); |
77 | 0 | } |
78 | |
|
79 | |
@Override |
80 | |
public boolean isReadOnly(final ELContext context, final Object base, final Object property) |
81 | |
throws NullPointerException, PropertyNotFoundException, ELException |
82 | |
{ |
83 | 0 | if (base == null) |
84 | |
{ |
85 | 0 | context.setPropertyResolved(true); |
86 | |
} |
87 | |
|
88 | 0 | return false; |
89 | |
} |
90 | |
|
91 | |
@Override |
92 | |
public Object getValue(final ELContext context, final Object base, final Object property) |
93 | |
throws NullPointerException, PropertyNotFoundException, ELException |
94 | |
{ |
95 | 0 | if (base != null) |
96 | |
{ |
97 | 0 | return null; |
98 | |
} |
99 | |
|
100 | 0 | if (property == null) |
101 | |
{ |
102 | 0 | throw new PropertyNotFoundException(); |
103 | |
} |
104 | |
|
105 | 0 | context.setPropertyResolved(true); |
106 | |
|
107 | 0 | final Map<String, Object> scopedMap = findScopedMap(facesContext(context), property); |
108 | 0 | if (scopedMap != null) |
109 | |
{ |
110 | 0 | return scopedMap.get(property); |
111 | |
} |
112 | |
|
113 | 0 | return null; |
114 | |
} |
115 | |
|
116 | |
@Override |
117 | |
public Class<?> getType(final ELContext context, final Object base, final Object property) |
118 | |
throws NullPointerException, PropertyNotFoundException, ELException |
119 | |
{ |
120 | |
|
121 | 0 | if (base != null) |
122 | |
{ |
123 | 0 | return null; |
124 | |
} |
125 | 0 | if (property == null) |
126 | |
{ |
127 | 0 | throw new PropertyNotFoundException(); |
128 | |
} |
129 | |
|
130 | 0 | context.setPropertyResolved(true); |
131 | 0 | return Object.class; |
132 | |
} |
133 | |
|
134 | |
@Override |
135 | |
public Iterator<FeatureDescriptor> getFeatureDescriptors(final ELContext context, final Object base) |
136 | |
{ |
137 | |
|
138 | 0 | if (base != null) |
139 | |
{ |
140 | 0 | return null; |
141 | |
} |
142 | |
|
143 | 0 | final List<FeatureDescriptor> descriptorList = new ArrayList<FeatureDescriptor>(); |
144 | 0 | final ExternalContext extContext = externalContext(context); |
145 | 0 | addDescriptorsToList(descriptorList, extContext.getRequestMap()); |
146 | 0 | addDescriptorsToList(descriptorList, extContext.getSessionMap()); |
147 | 0 | addDescriptorsToList(descriptorList, extContext.getApplicationMap()); |
148 | |
|
149 | 0 | return descriptorList.iterator(); |
150 | |
} |
151 | |
|
152 | |
@Override |
153 | |
public Class<?> getCommonPropertyType(final ELContext context, final Object base) |
154 | |
{ |
155 | |
|
156 | 0 | if (base != null) |
157 | |
{ |
158 | 0 | return null; |
159 | |
} |
160 | |
|
161 | 0 | return String.class; |
162 | |
} |
163 | |
|
164 | |
|
165 | |
private static void addDescriptorsToList(final List<FeatureDescriptor> descriptorList, |
166 | |
final Map<String, Object> scopeMap) |
167 | |
{ |
168 | 0 | for (Object name : scopeMap.keySet()) |
169 | |
{ |
170 | 0 | String strName = (String)name; |
171 | 0 | Class<?> runtimeType = scopeMap.get(strName).getClass(); |
172 | 0 | descriptorList.add(makeDescriptor(strName, runtimeType)); |
173 | 0 | } |
174 | 0 | } |
175 | |
|
176 | |
private static FeatureDescriptor makeDescriptor(final String name, final Class<?> runtimeType) |
177 | |
{ |
178 | 0 | FeatureDescriptor fd = new FeatureDescriptor(); |
179 | 0 | fd.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE); |
180 | 0 | fd.setValue(ELResolver.TYPE, runtimeType); |
181 | 0 | fd.setName(name); |
182 | 0 | fd.setDisplayName(name); |
183 | 0 | fd.setShortDescription(name); |
184 | 0 | fd.setExpert(false); |
185 | 0 | fd.setHidden(false); |
186 | 0 | fd.setPreferred(true); |
187 | 0 | return fd; |
188 | |
} |
189 | |
|
190 | |
|
191 | |
private static Map<String, Object> findScopedMap(final FacesContext facesContext, final Object property) |
192 | |
{ |
193 | 0 | if (facesContext == null) |
194 | |
{ |
195 | 0 | return null; |
196 | |
} |
197 | |
|
198 | 0 | final ExternalContext extContext = facesContext.getExternalContext(); |
199 | 0 | if (extContext == null) |
200 | |
{ |
201 | 0 | return null; |
202 | |
} |
203 | |
|
204 | 0 | final boolean startup = (extContext instanceof StartupServletExternalContextImpl); |
205 | |
Map<String, Object> scopedMap; |
206 | |
|
207 | |
|
208 | 0 | if (!startup) |
209 | |
{ |
210 | 0 | scopedMap = extContext.getRequestMap(); |
211 | 0 | if (scopedMap.containsKey(property)) |
212 | |
{ |
213 | 0 | return scopedMap; |
214 | |
} |
215 | |
} |
216 | |
|
217 | |
|
218 | 0 | UIViewRoot root = facesContext.getViewRoot(); |
219 | 0 | if (root != null) |
220 | |
{ |
221 | 0 | scopedMap = root.getViewMap(false); |
222 | 0 | if (scopedMap != null && scopedMap.containsKey(property)) |
223 | |
{ |
224 | 0 | return scopedMap; |
225 | |
} |
226 | |
} |
227 | |
|
228 | |
|
229 | 0 | if (!startup) |
230 | |
{ |
231 | 0 | scopedMap = extContext.getSessionMap(); |
232 | 0 | if (scopedMap.containsKey(property)) |
233 | |
{ |
234 | 0 | return scopedMap; |
235 | |
} |
236 | |
} |
237 | |
|
238 | |
|
239 | 0 | scopedMap = extContext.getApplicationMap(); |
240 | 0 | if (scopedMap.containsKey(property)) |
241 | |
{ |
242 | 0 | return scopedMap; |
243 | |
} |
244 | |
|
245 | |
|
246 | 0 | return null; |
247 | |
} |
248 | |
|
249 | |
|
250 | |
private static FacesContext facesContext(final ELContext context) |
251 | |
{ |
252 | 0 | return (FacesContext)context.getContext(FacesContext.class); |
253 | |
} |
254 | |
|
255 | |
private static ExternalContext externalContext(final ELContext context) |
256 | |
{ |
257 | 0 | FacesContext facesContext = facesContext(context); |
258 | 0 | if (facesContext != null) |
259 | |
{ |
260 | 0 | return facesContext(context).getExternalContext(); |
261 | |
} |
262 | |
|
263 | 0 | return null; |
264 | |
} |
265 | |
|
266 | |
} |