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1
17
18 package org.objectweb.jac.aspects.integrity;
19
20 import org.aopalliance.intercept.ConstructorInvocation;
21 import org.aopalliance.intercept.MethodInvocation;
22 import org.apache.log4j.Logger;
23 import org.objectweb.jac.core.AspectComponent;
24 import org.objectweb.jac.core.Collaboration;
25 import org.objectweb.jac.core.Interaction;
26 import org.objectweb.jac.core.Wrapper;
27 import org.objectweb.jac.core.rtti.ClassItem;
28 import org.objectweb.jac.core.rtti.CollectionItem;
29 import org.objectweb.jac.core.rtti.FieldItem;
30 import org.objectweb.jac.core.rtti.MethodItem;
31 import org.objectweb.jac.core.rtti.RttiAC;
32
33
36
37 public class RoleWrapper extends Wrapper {
38 static final Logger logger = Logger.getLogger("integrity");
39
40 public RoleWrapper(AspectComponent ac) {
41 super(ac);
42 }
43
44
48 public Object  updateOppositeRole(Interaction interaction) {
49 logger.debug("updateOppositeRoles " + interaction.method + "...");
50 if (attr("rtti.updateOpposite") != null ||
51 attr(IntegrityAC.DISABLE_ROLE_UPDATES)!=null)
52 return interaction.proceed();
53
54 doUpdate(interaction);
55
56 Object result = interaction.proceed();
57 return result;
58 }
59
60 protected void doUpdate(Interaction interaction) {
61 logger.debug(
62 "updateOppositeRoles "+interaction.wrappee+"."+
63 interaction.method+"("+interaction.args[0]+")");
64 ClassItem cli = interaction.getClassItem();
65 MethodItem method = (MethodItem) interaction.method;
66
67 FieldItem[] fields = method.getWrittenFields();
69 FieldItem opposite;
70 Object newValue = interaction.args[0];
71 for (int i = 0; fields != null && i < fields.length; i++) {
72 FieldItem field = fields[i];
73 Object currentValue = field.getThroughAccessor(interaction.wrappee);
74 opposite = (FieldItem) field.getAttribute(RttiAC.OPPOSITE_ROLE);
75 if (opposite != null) {
76 try {
77 attrdef("rtti.updateOpposite", opposite);
78 logger.debug(
79 "UpdateOppositeRole in "+interaction.method+" : "+
80 fields[i].getName()+" -> "+opposite.getName());
81 logger.debug(
82 "wrappee = "+interaction.wrappee+" ; "+
83 "currentValue = "+currentValue);
84 if (opposite instanceof CollectionItem) {
85 CollectionItem oppositeCollection =
86 (CollectionItem) opposite;
87 if (currentValue != null)
88 oppositeCollection.removeThroughRemover(
89 currentValue,
90 interaction.wrappee);
91 if (newValue != null
92 && !oppositeCollection.contains(
93 newValue,
94 interaction.wrappee))
95 oppositeCollection.addThroughAdder(
96 newValue,
97 interaction.wrappee);
98 } else {
99 if (currentValue != null) {
100 opposite.setThroughWriter(currentValue, null);
101 }
102 if (newValue!=null)
103 opposite.setThroughWriter(
104 newValue,
105 interaction.wrappee);
106 }
107 } catch (Exception e) {
108 logger.error(
109 "Failed to update opposite role "+opposite.getLongName()+" of "+
110 field.getLongName()+" on "+interaction.wrappee,e);
111 } finally {
112 attrdef("rtti.updateOpposite", null);
113 }
114 }
115 }
116
117 CollectionItem[] collections = method.getAddedCollections();
119 Object addedValue = interaction.args[0];
120 for (int i = 0; collections != null && i < collections.length; i++) {
121 CollectionItem collection = collections[i];
122 opposite =
123 (FieldItem) collection.getAttribute(RttiAC.OPPOSITE_ROLE);
124 if (opposite == null) {
125 logger.debug(
126 collection.getParent().getName()+"."+collection.toString()+
127 " has no opposite role");
128 continue;
129 }
130 logger.debug(
131 "UpdateOppositeRole #"+i+" in "+interaction.method+" : "+
132 collection.getName()+" -> "+opposite.getName());
133 try {
134 attrdef("rtti.updateOpposite", opposite);
135 if (opposite instanceof CollectionItem) {
136 CollectionItem oppositeCollection =
137 (CollectionItem) opposite;
138 if (addedValue != null
139 && !oppositeCollection.contains(
140 addedValue,
141 interaction.wrappee))
142 oppositeCollection.addThroughAdder(
143 addedValue,
144 interaction.wrappee);
145 } else {
146 if (addedValue != null) {
147 Object currentValue = opposite.get(addedValue);
148 logger.debug(" currentValue="+currentValue+
149 ", interaction.wrappee="+interaction.wrappee);
150 if (currentValue != null &&
151 currentValue != interaction.wrappee) {
152 collection.removeThroughRemover(
153 currentValue,
154 addedValue);
155 }
156 opposite.setThroughWriter(
157 addedValue,
158 interaction.wrappee);
159 }
160 }
161 } catch (Exception e) {
162 logger.error(
163 "Failed to update opposite role "+opposite.getLongName()+" of "+
164 collection.getLongName()+" on "+interaction.wrappee,e);
165 } finally {
166 attrdef("rtti.updateOpposite", null);
167 }
168 }
169
170 collections = method.getRemovedCollections();
172 Object removedValue = interaction.args[0];
173 for (int i = 0; collections != null && i < collections.length; i++) {
174 CollectionItem collection = collections[i];
175 logger.debug("removed collection " + collection);
176 opposite =
177 (FieldItem) collection.getAttribute(RttiAC.OPPOSITE_ROLE);
178 try {
179 attrdef("rtti.updateOpposite", opposite);
180 if (opposite == null) {
181 logger.debug(
182 collection.getParent().getName()+"."+collection.toString()+
183 " has no opposite role");
184 continue;
185 }
186 logger.debug(
187 "UpdateOppositeRole in "+interaction.method+" : "+collection.getName()+
188 " -> "+opposite.getName());
189 if (removedValue != null) {
190 if (opposite instanceof CollectionItem) {
191 ((CollectionItem) opposite).removeThroughRemover(
192 removedValue,
193 interaction.wrappee);
194 } else {
195 opposite.setThroughWriter(removedValue, null);
196 }
197 }
198 } catch (Exception e) {
199 logger.error("Failed to update opposite role "+opposite.getLongName()+" of "
200 +collection.getLongName()+" on "+interaction.wrappee,e);
201 } finally {
202 attrdef("rtti.updateOpposite", null);
203 }
204
205 }
206 }
207
208
213 public Object initAutoCreatedObject(Interaction interaction) {
214 Object result = interaction.proceed();
215 Collaboration collab = Collaboration.get();
216 Interaction reason =
217 (Interaction) collab.getAttribute("GuiAC.AUTOCREATE_REASON");
218 if (reason != null) {
219 logger.debug(
220 "initAutoCreatedObject for "
221 + interaction + " because of " + reason);
222 reason.args[0] = interaction.wrappee;
223 collab.removeAttribute("GuiAC.AUTOCREATE_REASON");
227 doUpdate(reason);
228 }
229 return result;
230 }
231
232
236 public static void disableRoleUpdate(FieldItem role) {
237 Collaboration.get().addAttribute("rtti.updateOpposite", role);
238 }
239
240 public static void enableRoleUpdate(FieldItem role) {
241 Collaboration.get().removeAttribute("rtti.updateOpposite");
242 }
243
244 public Object invoke(MethodInvocation invocation) throws Throwable {
245 return this.updateOppositeRole((Interaction) invocation);
246 }
247
248 public Object construct(ConstructorInvocation invocation)
249 throws Throwable
250 {
251 return this.initAutoCreatedObject((Interaction) invocation);
252 }
253 }
254 |
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