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1
27 package ch.ethz.prose.query;
28
29 import ch.ethz.jvmai.JVMAspectInterface;
31 import ch.ethz.prose.AspectManager;
32 import ch.ethz.prose.Aspect;
33 import ch.ethz.prose.crosscut.Crosscut;
34
35 import java.util.List  ;
36 import java.util.Vector ;
37 import java.util.Iterator ;
38 import java.util.Comparator ;
39 import java.util.Collections ;
40 import java.util.Set ;
41 import java.util.HashSet ;
42
43 import ch.ethz.prose.engine.ExceptionThrowRequest;
44 import ch.ethz.prose.engine.FieldAccessRequest;
45 import ch.ethz.prose.engine.FieldModificationRequest;
46 import ch.ethz.prose.engine.JoinPointRequest;
47 import ch.ethz.prose.engine.MethodEntryRequest;
48 import ch.ethz.prose.engine.MethodExitRequest;
49 import ch.ethz.prose.engine.JoinPointManager;
50
51 import ch.ethz.jvmai.MethodEntryJoinPoint;
52 import ch.ethz.jvmai.MethodExitJoinPoint;
53 import ch.ethz.jvmai.FieldAccessJoinPoint;
54 import ch.ethz.jvmai.FieldModificationJoinPoint;
55 import ch.ethz.jvmai.ExceptionJoinPoint;
56
57
58
59
65 public class QueryManager
66 {
67
68
69 public static final int SELECT_ASPECT = 0x01; public static final int SELECT_CROSSCUT = 0x02;
71 public static final int SELECT_JOINPOINT = 0x04;
72 public static final int GROUP_BY_ASPECT = 0x01;
73 public static final int GROUP_BY_CROSSCUT = 0x02;
74 public static final int GROUP_BY_JOINPOINT = 0x04;
75 public static final int SELECT_ALL = SELECT_ASPECT | SELECT_CROSSCUT | SELECT_JOINPOINT;
76
77 AspectManager aspectMgr = null;
78 JoinPointManager jpMgr = null;
79 public QueryManager(AspectManager am)
80 {
81 if (am == null)
82 throw new IllegalArgumentException ("QueryManager.init: null am");
83 aspectMgr = am;
84 jpMgr = am.getJoinPointManager();
85 }
86
87
112 public List queryAspects(List aspectList, int selectFields, int groupBy)
113 {
114 if (selectFields == 0)
115 return new Vector ();
116
117 HashSet result = new HashSet ();
118 Iterator i = aspectList.iterator();
119 while (i.hasNext())
120 {
121 AspectSurrogate as = (AspectSurrogate)i.next();
122 Aspect crtAspect = reconstructAspect(as);
123 if (crtAspect != null)
124 {
125 Iterator j = crtAspect.getCrosscuts().iterator();
126 if (!j.hasNext()) result.add(createTuple(as,null,null,selectFields));
127 while (j.hasNext())
128 {
129 Crosscut crtCrosscut = (Crosscut)j.next();
130 Iterator k = jpMgr.getJoinpoints(crtCrosscut).iterator();
131 CrosscutSurrogate cs = new CrosscutSurrogate(as,crtCrosscut);
132 if (!k.hasNext()) result.add(createTuple(as,cs,null,selectFields));
133 while (k.hasNext())
134 {
135 JoinPointRequest crtJpr = (JoinPointRequest)k.next();
136 result.add(createTuple(as,cs,crtJpr,selectFields));
137 }
138
139 }
140 }
141 }
142 return sortTupleList(new Vector (result),groupBy);
143 }
144
145 public List queryCrosscuts(List crosscutList, int selectFields, int groupBy)
146 {
147 if (selectFields == 0)
148 return new Vector ();
149
150 HashSet result = new HashSet ();
151 Iterator i = crosscutList.iterator();
152 while (i.hasNext())
153 {
154 try
155 {
156 CrosscutSurrogate cs = (CrosscutSurrogate)i.next();
157 AspectSurrogate as = cs.getOwnerSurrogate();
158
159 Crosscut crtCrosscut = reconstructCrosscut(cs);
160 Iterator k = jpMgr.getJoinpoints(crtCrosscut).iterator();
161 if (!k.hasNext()) result.add(createTuple(as,cs,null,selectFields));
162 while (k.hasNext())
163 {
164 JoinPointRequest crtJpr = (JoinPointRequest)k.next();
165 result.add(createTuple(as,cs,crtJpr,selectFields));
166 }
167 }
168 catch (ClassNotFoundException e)
169 {
170 }
176
177 }
178 return sortTupleList(new Vector (result),groupBy);
179 }
180
181 public List queryJoinpoints(List jpList, int selectFields, int groupBy)
182 {
183 if (selectFields == 0)
184 return new Vector ();
185
186 HashSet result = new HashSet ();
187 Iterator i = new HashSet (jpList).iterator();
188 while (i.hasNext())
189 {
190 try
191 {
192 JoinPointRequestSurrogate jprs = (JoinPointRequestSurrogate)i.next();
193 JoinPointRequest jpr = reconstructRequest(jprs);
194 Iterator j = jpMgr.getCrosscuts(jpr).iterator();
195 while (j.hasNext())
196 {
197 Crosscut crtCrosscut = (Crosscut)j.next();
198 Aspect crtAspect = crtCrosscut.getOwner();
199 result.add(createTuple(crtAspect,crtCrosscut,jprs,selectFields));
200 }
201 }
202
203 catch (ClassNotFoundException e)
209 {}
210 catch (NoSuchMethodException e)
211 {}
212 catch (NoSuchFieldException e)
213 {}
214
215 }
216 return sortTupleList(new Vector (result),groupBy);
217 }
218
219
220 public List queryAllJoinpoints()
221 {
222 Set jpSur = new HashSet ();
223 Iterator i = jpMgr.allJoinpoints().iterator();
224 while (i.hasNext())
225 jpSur.add(new JoinPointRequestSurrogate((JoinPointRequest)i.next()));
226
227 List jpSurList = new Vector (jpSur);
228 return jpSurList;
229 }
230
231 public List queryAllAspects()
232 {
233 Set apSur = new HashSet ();
234 Iterator i = aspectMgr.getAllAspects().iterator();
235 while (i.hasNext())
236 apSur.add(new AspectSurrogate((Aspect)i.next()));
237
238 return new Vector (apSur);
239 }
240
241
242
243 private List sortTupleList(List lst, int groupBy)
244 {
245 if (groupBy != 0)
246 Collections.sort(lst,new TupleComparator(groupBy));
247
248 return lst;
249 }
250
251 static class TupleComparator implements Comparator
252 {
253 int groupBy;
254 TupleComparator(int groupBy)
255 {
256 this.groupBy=groupBy;
257 }
258
259 private int doHashCode(Object o)
260 {
261 if (o == null)
262 return 0;
263 else
264 return o.hashCode();
265 }
266
267 private int doEquals(Object o1, Object o2)
268 {
269 int compareVal = doHashCode(o1) - doHashCode(o2);
270 if (compareVal != 0)
271 return compareVal;
272
273 if (o1 != null && o1.equals(o2))
274 return 0;
275 else
276 return 1;
277 }
278
279
280 public int compare(Object o1, Object o2)
281 {
282 int hvalCompare;
283 Tuple t1 = (Tuple)o1;
284 Tuple t2 = (Tuple)o2;
285 switch (groupBy)
286 {
287 case GROUP_BY_ASPECT:
288 hvalCompare =
289 doEquals(t1.getAspectSurrogate(),t2.getAspectSurrogate());
290 break;
291 case GROUP_BY_JOINPOINT:
292 hvalCompare =
293 doEquals(t1.getRequestSurrogate(),t2.getRequestSurrogate());
294 break;
295 case GROUP_BY_CROSSCUT:
296 hvalCompare =
297 doEquals(t1.getAspectSurrogate(),t2.getAspectSurrogate());
298 if (hvalCompare == 0)
299 hvalCompare = doEquals(t1.getCrosscutSurrogate(),t2.getCrosscutSurrogate());
300 break;
301 default:
302 throw new IllegalArgumentException ("Illegal groupByValue");
303 }
304 return hvalCompare;
306 }
307 }
308
309 protected Tuple createTuple(AspectSurrogate as, CrosscutSurrogate cs, JoinPointRequest jpr, int selectFields)
310 {
311 Tuple result = new Tuple();
312 if ( (selectFields & SELECT_ASPECT) != 0 )
313 result.setAspectSurrogate(as);
314 if ( (selectFields & SELECT_CROSSCUT) != 0 )
315 result.setCrosscutSurrogate(cs);
316 if ( (selectFields & SELECT_JOINPOINT) != 0)
317 {
318 if (jpr == null)
319 result.setRequestSurrogate(null);
320 else
321 result.setRequestSurrogate(new JoinPointRequestSurrogate(jpr));
322 }
323
324 return result;
325 }
326
327 protected Tuple createTuple(Aspect a, Crosscut c, JoinPointRequestSurrogate jprs, int selectFields)
328 {
329 Tuple result = new Tuple();
330 AspectSurrogate as = null;
331 if ( (selectFields & SELECT_ASPECT) != 0 )
332 {
333 if (a!= null)
334 as = new AspectSurrogate(a);
335 else
336 as = null;
337 result.setAspectSurrogate(as);
338 }
339
340 if ( (selectFields & SELECT_CROSSCUT) != 0 )
341 {
342 if (as == null)
343 {
344 if (a != null)
345 as = new AspectSurrogate(a);
346 else
347 as = null;
348 }
349 result.setCrosscutSurrogate( new CrosscutSurrogate(as,c));
350 }
351
352 if ( (selectFields & SELECT_JOINPOINT) != 0)
353 result.setRequestSurrogate(jprs);
354 return result;
355 }
356
357
358
359
360
361
362 public Aspect reconstructAspect(AspectSurrogate as)
363 {
364 List lst = aspectMgr.getAllAspects();
365 Iterator i = lst.iterator();
366 while (i.hasNext())
367 {
368 Aspect crtAsp = (Aspect)(i.next());
369 if (crtAsp.getAssociatedObject().equals(as.getAssociatedObject()) &&
370 crtAsp.getClass().getName().equals(as.getAspectClassName()))
371 return crtAsp;
372 }
373 return null;
374 }
375
376 protected Crosscut reconstructCrosscut(CrosscutSurrogate cs) throws ClassNotFoundException
377 {
378 Aspect a = reconstructAspect(cs.getOwnerSurrogate());
379 if (a == null)
380 return null;
381 return (Crosscut)a.getCrosscuts().get(cs.getIndex());
382 }
383
384
385
395 protected JoinPointRequest reconstructRequest(JoinPointRequestSurrogate jprs)
396 throws ClassNotFoundException , NoSuchMethodException , NoSuchFieldException
397 {
398 return jpMgr.createJoinPointRequest(jprs.getKind(),jprs.getMember().toRealInstance());
399 }
400
401
402 }
403
404
405 |
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