Update to shuttle classes (Alberto)
[u/mrichter/AliRoot.git] / STEER / AliCDBGrid.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
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15
16 /////////////////////////////////////////////////////////////////////////////////////////////////
17 //                                                                                             //
18 // AliCDBGrid                                                                                  //
19 // access class to a DataBase in an AliEn storage                                              //
20 //                                                                                             //
21 /////////////////////////////////////////////////////////////////////////////////////////////////
22
23
24 #include <TGrid.h>
25 #include <TGridResult.h>
26 #include <TFile.h>
27 #include <TKey.h>
28 #include <TROOT.h>
29 #include <TSystem.h>
30 #include <TObjArray.h>
31 #include <TObjString.h>
32 #include <TRegexp.h>
33
34 #include "AliLog.h"
35 #include "AliCDBEntry.h"
36 #include "AliCDBGrid.h"
37
38
39 ClassImp(AliCDBGrid)
40
41 //_____________________________________________________________________________
42 AliCDBGrid::AliCDBGrid(const char *gridUrl, const char *user, const char *dbFolder, const char *se) :
43 AliCDBStorage(),
44 fGridUrl(gridUrl),
45 fUser(user),
46 fDBFolder(dbFolder),
47 fSE(se)
48 {
49 // constructor //
50
51         // if the same Grid is alreay active, skip connection
52         if (!gGrid || fGridUrl != gGrid->GridUrl()  
53              || (( fUser != "" ) && ( fUser != gGrid->GetUser() )) ) {
54                 // connection to the Grid
55                 AliInfo("Connection to the Grid!!!!");
56                 if(gGrid){
57                         AliInfo(Form("gGrid = %x; fGridUrl = %s; gGrid->GridUrl() = %s",gGrid,fGridUrl.Data(), gGrid->GridUrl()));
58                         AliInfo(Form("fUser = %s; gGrid->GetUser() = %s",fUser.Data(), gGrid->GetUser()));
59                 }
60                 TGrid::Connect(fGridUrl.Data(),fUser.Data());
61         }
62
63         if(!gGrid) {
64                 AliError("Connection failed!");
65                 return;
66         }
67
68         TString initDir(gGrid->Pwd(0));
69         if (fDBFolder[0] != '/') {
70                 fDBFolder.Prepend(initDir);
71         }
72
73         // check DBFolder: trying to cd to DBFolder; if it does not exist, create it
74         if(!gGrid->Cd(fDBFolder.Data(),0)){
75                 AliDebug(2,Form("Creating new folder <%s> ...",fDBFolder.Data()));
76                 if(!gGrid->Mkdir(fDBFolder.Data(),"",0)){
77                         AliError(Form("Cannot create folder <%s> !",fDBFolder.Data())); 
78                 }
79         } else {
80                 AliDebug(2,Form("Folder <%s> found",fDBFolder.Data()));
81         }
82
83         // removes any '/' at the end of path, then append one '/'
84         while(fDBFolder.EndsWith("/")) fDBFolder.Remove(fDBFolder.Last('/')); 
85         fDBFolder+="/";
86
87         // return to the initial directory
88         gGrid->Cd(initDir.Data(),0);
89 }
90
91 //_____________________________________________________________________________
92 AliCDBGrid::~AliCDBGrid()
93 {
94 // destructor
95
96 }
97
98 //_____________________________________________________________________________
99 Bool_t AliCDBGrid::FilenameToId(const char* filename, AliCDBRunRange& runRange, 
100                                 Int_t& gridVersion) {
101 // build AliCDBId from filename numbers
102
103         Ssiz_t mSize;
104         
105         // valid filename: Run#firstRun_#lastRun_v#version.root
106         TRegexp keyPattern("^Run[0-9]+_[0-9]+_v[0-9]+.root$");
107         keyPattern.Index(filename, &mSize);
108         if (!mSize) {
109                 AliDebug(2,Form("Bad filename <%s>.", filename));
110                 return kFALSE;
111         }
112
113         TString idString(filename);
114         idString.Resize(idString.Length() - sizeof(".root") + 1);
115
116         TObjArray* strArray = (TObjArray*) idString.Tokenize("_");
117
118         TString firstRunString(((TObjString*) strArray->At(0))->GetString());
119         runRange.SetFirstRun(atoi(firstRunString.Data() + 3));
120         runRange.SetLastRun(atoi(((TObjString*) strArray->At(1))->GetString()));
121         
122         TString verString(((TObjString*) strArray->At(2))->GetString());
123         gridVersion = atoi(verString.Data() + 1);
124
125         delete strArray;
126
127         return kTRUE;
128 }
129
130 //_____________________________________________________________________________
131 Bool_t AliCDBGrid::IdToFilename(const AliCDBRunRange& runRange, Int_t gridVersion, 
132                                  TString& filename) {
133 // build file name from AliCDBId data (run range, version)
134
135         if (!runRange.IsValid()) {
136                 AliDebug(2,Form("Invalid run range <%d, %d>.", 
137                         runRange.GetFirstRun(), runRange.GetLastRun()));
138                 return kFALSE;
139         }
140
141         if (gridVersion < 0) {
142                 AliDebug(2,Form("Invalid version <%d>.", gridVersion));
143                 return kFALSE;
144         }
145  
146         filename += "Run";
147         filename += runRange.GetFirstRun();
148         filename += "_";
149         filename += runRange.GetLastRun();
150         filename += "_v";
151         filename += gridVersion;
152         filename += ".root";
153
154         return kTRUE;
155 }
156
157 //_____________________________________________________________________________
158 Bool_t AliCDBGrid::PrepareId(AliCDBId& id) {
159 // prepare id (version) of the object that will be stored (called by PutEntry)
160
161         TString initDir(gGrid->Pwd(0));
162         TString pathName= id.GetPath();
163
164         TString dirName(fDBFolder);
165
166         Bool_t dirExist=kFALSE;
167  
168         // go to the path; if directory does not exist, create it
169         TObjArray *arrName=pathName.Tokenize("/");
170         for(int i=0;i<arrName->GetEntries();i++){
171                 TString buffer((arrName->At(i))->GetName());
172                 dirName+=buffer; dirName+="/";
173                 dirExist=gGrid->Cd(dirName,0);
174                 if (!dirExist) {
175                         AliDebug(2,Form("Creating new folder <%s> ...",dirName.Data()));
176                         if(!gGrid->Mkdir(dirName,"",0)){
177                                 AliError(Form("Cannot create directory <%s> !",dirName.Data()));
178                                 gGrid->Cd(initDir.Data());
179                         return kFALSE;
180                         }
181                 }
182         }
183         delete arrName;
184         gGrid->Cd(initDir,0);
185
186         const char* filename;
187         AliCDBRunRange aRunRange; // the runRange got from filename 
188         AliCDBRunRange lastRunRange(-1,-1); // highest runRange found
189         Int_t aVersion; // the version got from filename 
190         Int_t lastVersion=0; // highest version found
191
192         TGridResult *res = gGrid->Ls(dirName);
193
194         //loop on the files in the directory, look for highest version
195         for(int i=0; i < res->GetEntries(); i++){
196                 filename=res->GetFileName(i);
197                 if (!FilenameToId(filename, aRunRange, aVersion)) continue;
198                 if (aRunRange.Overlaps(id.GetAliCDBRunRange()) && aVersion > lastVersion) {
199                         lastVersion = aVersion;
200                         lastRunRange = aRunRange;
201                 }
202
203         }
204         delete res; 
205  
206         id.SetVersion(lastVersion + 1);
207
208         TString lastStorage = id.GetLastStorage();
209         if(lastStorage.Contains(TString("new"), TString::kIgnoreCase) && id.GetVersion() > 1 ){
210                 AliDebug(2, Form("A NEW object is being stored with version %d",
211                                         id.GetVersion()));
212                 AliDebug(2, Form("and it will hide previously stored object with version %d!",
213                                         id.GetVersion()-1));
214         }
215
216         if(!lastRunRange.IsAnyRange() && !(lastRunRange.IsEqual(&id.GetAliCDBRunRange()))) 
217                 AliWarning(Form("Run range modified w.r.t. previous version (Run%d_%d_v%d)",
218                         lastRunRange.GetFirstRun(), lastRunRange.GetLastRun(), id.GetVersion()));
219     
220         return kTRUE;
221 }
222
223 //_____________________________________________________________________________
224 Bool_t AliCDBGrid::GetId(const AliCDBId& query, AliCDBId& result) {
225 // look for filename matching query (called by GetEntry)
226
227         TString initDir(gGrid->Pwd(0));
228
229         TString dirName(fDBFolder);
230         dirName += query.GetPath(); // dirName = fDBFolder/idPath
231
232         if (!gGrid->Cd(dirName,0)) {
233                 AliDebug(2,Form("Directory <%s> not found", (query.GetPath()).Data()));
234                 AliDebug(2,Form("in DB folder %s", fDBFolder.Data()));
235                 return kFALSE;
236         }
237  
238         TGridResult *res = gGrid->Ls(dirName);
239
240         const char* filename;
241         AliCDBRunRange aRunRange; // the runRange got from filename
242         Int_t aVersion; // the version got from filename
243  
244         for(int i=0; i < res->GetEntries(); i++){
245                 filename=res->GetFileName(i);
246                 if (!FilenameToId(filename, aRunRange, aVersion)) continue;
247                 // aRunRange and aVersion filled from filename
248                 
249                 if (!aRunRange.Comprises(query.GetAliCDBRunRange())) continue; 
250                 // aRunRange contains requested run!
251
252                 if (!query.HasVersion()){ // look for highest version
253                         if(result.GetVersion() > aVersion) continue;
254                         if(result.GetVersion() == aVersion) {
255                                 AliDebug(2,Form("More than one object valid for run %d, version %d!", 
256                                         query.GetFirstRun(), aVersion));
257                         return kFALSE; 
258                         }
259                         result.SetVersion(aVersion);
260                         result.SetFirstRun(aRunRange.GetFirstRun());
261                         result.SetLastRun(aRunRange.GetLastRun());
262
263                 } else { // look for specified version
264                         if(query.GetVersion() != aVersion) continue;
265                         if(result.GetVersion() == aVersion){
266                                 AliDebug(2,Form("More than one object valid for run %d, version %d!", 
267                                         query.GetFirstRun(), aVersion));
268                                         return kFALSE; 
269                         }
270                         result.SetVersion(aVersion);
271                         result.SetFirstRun(aRunRange.GetFirstRun());
272                         result.SetLastRun(aRunRange.GetLastRun());
273                 }
274         } // end loop on filenames
275         delete res;
276         
277         gGrid->Cd(initDir.Data(),0);
278  
279         return kTRUE;
280 }
281
282 //_____________________________________________________________________________
283 AliCDBEntry* AliCDBGrid::GetEntry(const AliCDBId& queryId) {
284 // get AliCDBEntry from the database
285
286         AliCDBId dataId(queryId.GetAliCDBPath(), -1, -1, -1, -1);
287         Bool_t result;
288         
289         // look for a filename matching query requests (path, runRange, version, subVersion)
290         if (!queryId.HasVersion()) {
291                 // if version is not specified, first check the selection criteria list
292                 AliCDBId selectedId(queryId);
293                 GetSelection(&selectedId);
294                 result = GetId(selectedId,dataId);
295         } else {
296                 result = GetId(queryId,dataId);
297         }
298
299         if (!result || !dataId.IsSpecified()) return NULL;
300
301         TString filename;
302         if (!IdToFilename(dataId.GetAliCDBRunRange(), dataId.GetVersion(),filename)) {
303                 AliDebug(2,Form("Bad data ID encountered! Subnormal error!"));
304                 return NULL;
305         }
306
307         filename.Prepend("/alien" + fDBFolder + queryId.GetPath() + '/');
308         filename += "?se="; filename += fSE.Data(); 
309
310         AliDebug(2,Form("Opening file: %s",filename.Data()));
311         TFile *file = TFile::Open(filename);
312         if (!file) {
313                 AliDebug(2,Form("Can't open file <%s>!", filename.Data()));
314                 return NULL;
315         }
316
317         // get the only AliCDBEntry object from the file
318         // the object in the file is an AliCDBEntry entry named "AliCDBEntry"
319
320         TObject* anObject = file->Get("AliCDBEntry");
321
322         if (!anObject) {
323                 AliDebug(2,Form("Bad storage data: NULL entry object!"));
324                 return NULL;
325         }
326
327         if (AliCDBEntry::Class() != anObject->IsA()) {
328                 AliDebug(2,Form("Bad storage data: Invalid entry object!"));
329                 return NULL;
330         }
331
332         AliCDBId entryId = ((AliCDBEntry* ) anObject)->GetId();
333  
334         // The object's Id is not reset during storage
335         // If object's Id runRange or version do not match with filename,
336         // it means that someone renamed file by hand. In this case a warning msg is issued.
337  
338         ((AliCDBEntry*) anObject)->SetLastStorage("grid");
339  
340         if(!((entryId.GetAliCDBRunRange()).IsEqual(&dataId.GetAliCDBRunRange())) || 
341                 entryId.GetVersion() != dataId.GetVersion()){
342                 AliWarning(Form("Either RunRange or gridVersion in the object's metadata do noth match with fileName numbers:"));
343                 AliWarning(Form("someone renamed file by hand!"));
344         }
345
346         // close file, return retieved entry
347         file->Close(); delete file; file=0;
348         return (AliCDBEntry*) anObject;
349 }
350
351 //_____________________________________________________________________________
352 void AliCDBGrid::GetEntriesForLevel0(const char* level0,
353         const AliCDBId& queryId, TList* result) {
354 // multiple request (AliCDBStorage::GetAll)
355
356         TString level0Dir=fDBFolder;
357         level0Dir += level0;
358
359         if (!gGrid->Cd(level0Dir,0)) {
360                 AliDebug(2,Form("Level0 directory <%s> not found", level0Dir.Data()));
361                 return;
362         }
363
364         TGridResult *res = gGrid->Ls(level0Dir);
365         TString level1;
366         for(int i=0; i < res->GetEntries(); i++){
367                 level1=res->GetFileName(i);
368         if (queryId.GetAliCDBPath().Level1Comprises(level1))
369                 GetEntriesForLevel1(level0, level1, queryId, result);
370         }
371         delete res;
372 }
373
374 //_____________________________________________________________________________
375 void AliCDBGrid::GetEntriesForLevel1(const char* level0, const char* level1,
376         const AliCDBId& queryId, TList* result) {
377 // multiple request (AliCDBStorage::GetAll)
378
379         TString level1Dir=fDBFolder;
380         level1Dir += level0;
381         level1Dir += '/';
382         level1Dir += level1;
383
384         if (!gGrid->Cd(level1Dir,0)) {
385                 AliDebug(2,Form("Level1 directory <%s> not found", level1Dir.Data()));
386                 return;
387         }
388
389         TGridResult *res = gGrid->Ls(level1Dir);
390         TString level2;
391         for(int i=0; i < res->GetEntries(); i++){
392                 level2=res->GetFileName(i);
393                 if (queryId.GetAliCDBPath().Level2Comprises(level2)){
394                         AliCDBPath entryPath(level0, level1, level2);
395                         AliCDBId entryId(entryPath, 
396                                 queryId.GetAliCDBRunRange(),
397                                 queryId.GetVersion(), 
398                                 queryId.GetSubVersion());
399
400                         AliCDBEntry* anEntry = GetEntry(entryId);
401                         if (anEntry) result->Add(anEntry);
402
403                 }
404         }
405         delete res;
406 }
407
408 //_____________________________________________________________________________
409 TList* AliCDBGrid::GetEntries(const AliCDBId& queryId) {
410 // multiple request (AliCDBStorage::GetAll)
411
412         TList* result = new TList();
413         result->SetOwner();
414
415         TString initDir(gGrid->Pwd(0));
416
417         TGridResult *res = gGrid->Ls(fDBFolder);
418         TString level0;
419
420         for(int i=0; i < res->GetEntries(); i++){
421                 level0=res->GetFileName(i);
422                 if (queryId.GetAliCDBPath().Level0Comprises(level0)) 
423                         GetEntriesForLevel0(level0, queryId, result);                               
424         }        
425         delete res;
426  
427         gGrid->Cd(initDir.Data(),0);
428         return result;  
429 }
430
431 //_____________________________________________________________________________
432 Bool_t AliCDBGrid::PutEntry(AliCDBEntry* entry) {
433 // put an AliCDBEntry object into the database
434         
435         AliCDBId& id = entry->GetId();
436
437         // set version for the entry to be stored
438         if (!PrepareId(id)) return kFALSE;       
439
440         // build filename from entry's id
441         TString filename;
442         if (!IdToFilename(id.GetAliCDBRunRange(), id.GetVersion(), filename)) {
443                 AliError("Bad ID encountered! Subnormal error!");
444                 return kFALSE;
445         } 
446
447         filename.Prepend("/alien" + fDBFolder + id.GetPath() + '/');
448         TString filenameCopy(filename);
449         filename += "?se="; filename += fSE.Data(); 
450  
451         TDirectory* saveDir = gDirectory;
452
453         // open file
454         TFile *file = TFile::Open(filename,"CREATE");
455         if(!file || !file->IsWritable()){
456                 AliError(Form("Can't open file <%s>!", filename.Data()));    
457                 if(file && !file->IsWritable()) file->Close(); delete file; file=0;
458                 return kFALSE;
459         }
460   
461         file->cd(); 
462
463         entry->SetVersion(id.GetVersion());
464
465         // write object (key name: "AliCDBEntry")
466         Bool_t result = (entry->Write("AliCDBEntry") != 0); 
467         if (!result) AliError(Form("Can't write entry to file <%s>!",filename.Data()));
468
469
470         if (saveDir) saveDir->cd(); else gROOT->cd();
471         file->Close(); delete file; file=0;
472         if(result) {
473                 AliInfo(Form("CDB object stored into file %s",filenameCopy.Data()));
474                 AliInfo(Form("using S.E. %s", fSE.Data()));
475         }
476  
477         return result;
478 }
479
480 //_____________________________________________________________________________
481 TList* AliCDBGrid::GetIdListFromFile(const char* fileName){
482
483         TString turl(fileName);
484         turl.Prepend("/alien" + fDBFolder);
485         turl += "?se="; turl += fSE.Data(); 
486         TFile *file = TFile::Open(turl);
487         if (!file) {
488                 AliError(Form("Can't open selection file <%s>!", turl.Data()));
489                 return NULL;
490         }
491
492         TList *list = new TList();
493         list->SetOwner();
494         int i=0;
495         TString keycycle;
496         
497         AliCDBId *id;
498         while(1){
499                 i++;
500                 keycycle = "AliCDBId;";
501                 keycycle+=i;
502                 
503                 id = (AliCDBId*) file->Get(keycycle);
504                 if(!id) break;
505                 list->AddFirst(id);
506         }
507         file->Close(); delete file; file=0;
508         
509         return list;
510
511
512 }
513
514 //_____________________________________________________________________________
515 Bool_t AliCDBGrid::Contains(const char* path) const{
516 // check for path in storage's DBFolder
517
518         TString initDir(gGrid->Pwd(0));
519         TString dirName(fDBFolder);
520         dirName += path; // dirName = fDBFolder/path
521         Bool_t result=kFALSE;
522         if (gGrid->Cd(dirName,0)) result=kTRUE;
523         gGrid->Cd(initDir.Data(),0);
524         return result;
525 }
526
527 /////////////////////////////////////////////////////////////////////////////////////////////////
528 //                                                                                             //
529 // AliCDBGrid factory                                                                          //
530 //                                                                                             //
531 /////////////////////////////////////////////////////////////////////////////////////////////////
532
533 ClassImp(AliCDBGridFactory)
534
535 //_____________________________________________________________________________
536 Bool_t AliCDBGridFactory::Validate(const char* gridString) {
537 // check if the string is valid Grid URI
538
539         // pattern: alien://hostName:Port;user;dbPath;SE
540         // example of a valid pattern:
541         // "alien://aliendb4.cern.ch:9000;colla;DBTest;ALICE::CERN::Server"
542 //        TRegexp gridPattern("^alien://.+:[0-9]+;[a-zA-Z0-9_-.]+;.+;.+$");
543         TRegexp gridPattern("^alien://.+$");
544
545         return TString(gridString).Contains(gridPattern);
546 }
547
548 //_____________________________________________________________________________
549 AliCDBParam* AliCDBGridFactory::CreateParameter(const char* gridString) {
550 // create AliCDBGridParam class from the URI string
551
552         if (!Validate(gridString)) {
553                 return NULL;
554         }
555         //TString buffer(gridString + sizeof("alien://") - 1);
556         TString buffer(gridString);
557  
558         TString gridUrl         = "alien://"; 
559         TString user            = "";
560         TString dbFolder        = "DBGrid";
561         TString se              = "ALICE::CERN::se01";
562
563         TObjArray *arr = buffer.Tokenize('?');
564         TIter iter(arr);
565         TObjString *str;
566         
567         while((str = (TObjString*) iter.Next())){
568                 TString entry(str->String());
569                 Int_t indeq = entry.Index('=');
570                 if(indeq == -1) {
571                         if(entry.BeginsWith("alien://")) { // maybe it's a gridUrl!
572                                 gridUrl = entry;
573                                 continue;
574                         } else {
575                                 AliError(Form("Invalid entry! %s",entry.Data()));
576                                 continue;
577                         }
578                 }
579                 
580                 TString key = entry(0,indeq);
581                 TString value = entry(indeq+1,entry.Length()-indeq);
582
583                 if(key.Contains("grid",TString::kIgnoreCase)) {
584                         gridUrl += value;
585                 } 
586                 else if (key.Contains("user",TString::kIgnoreCase)){
587                         user = value;
588                 }
589                 else if (key.Contains("folder",TString::kIgnoreCase)){
590                         dbFolder = value;
591                 }
592                 else if (key.Contains("se",TString::kIgnoreCase)){
593                         se = value;
594                 }
595                 else{
596                         AliError(Form("Invalid entry! %s",entry.Data()));
597                 }
598         }
599         delete arr; arr=0;
600                 
601         AliInfo(Form("gridUrl:  %s",gridUrl.Data()));
602         AliInfo(Form("user:     %s",user.Data()));
603         AliInfo(Form("dbFolder: %s",dbFolder.Data()));
604         AliInfo(Form("s.e.:     %s",se.Data()));
605
606         return new AliCDBGridParam(gridUrl, user, dbFolder, se);       
607 }
608
609 //_____________________________________________________________________________
610 AliCDBStorage* AliCDBGridFactory::Create(const AliCDBParam* param) {
611 // create AliCDBGrid storage instance from parameters
612         
613         if (AliCDBGridParam::Class() == param->IsA()) {
614                 
615                 const AliCDBGridParam* gridParam = (const AliCDBGridParam*) param;
616                 AliCDBGrid *grid = new AliCDBGrid(gridParam->GridUrl(), 
617                                       gridParam->GetUser(), gridParam->GetDBFolder(),
618                                       gridParam->GetSE()); 
619
620                 if(gGrid) return grid;
621         }
622
623         return NULL;
624 }
625
626 /////////////////////////////////////////////////////////////////////////////////////////////////
627 //                                                                                             //
628 // AliCDBGrid Parameter class                                                                  //                                          //
629 //                                                                                             //
630 /////////////////////////////////////////////////////////////////////////////////////////////////
631
632 ClassImp(AliCDBGridParam)
633
634 //_____________________________________________________________________________
635 AliCDBGridParam::AliCDBGridParam() {
636 // default constructor
637
638 }
639
640 //_____________________________________________________________________________
641 AliCDBGridParam::AliCDBGridParam(const char* gridUrl, 
642                                 const char* user, 
643                                 const char* dbFolder, 
644                                 const char* se):
645  fGridUrl(gridUrl),
646  fUser(user),
647  fDBFolder(dbFolder),
648  fSE(se)
649 {
650 // constructor
651         
652         SetType("alien");
653
654         TString uri;
655         uri+=fGridUrl; uri+="?";
656         uri+="User=";   uri+=fUser; uri+="?"; 
657         uri+="DBFolder="; uri+=fDBFolder; uri+="?";
658         uri+="SE=";     uri+=fSE;
659         
660         SetURI(uri);
661 }
662
663 //_____________________________________________________________________________
664 AliCDBGridParam::~AliCDBGridParam() {
665 // destructor
666
667 }
668
669 //_____________________________________________________________________________
670 AliCDBParam* AliCDBGridParam::CloneParam() const {
671 // clone parameter
672
673         return new AliCDBGridParam(fGridUrl, fUser, fDBFolder, fSE);
674 }
675
676 //_____________________________________________________________________________
677 ULong_t AliCDBGridParam::Hash() const {
678 // return Hash function
679
680         return fGridUrl.Hash()+fUser.Hash()+fDBFolder.Hash()+fSE.Hash();
681 }
682
683 //_____________________________________________________________________________
684 Bool_t AliCDBGridParam::IsEqual(const TObject* obj) const {
685 // check if this object is equal to AliCDBParam obj
686
687         if (this == obj) {
688                 return kTRUE;
689         }
690
691         if (AliCDBGridParam::Class() != obj->IsA()) {
692                 return kFALSE;
693         }
694
695         AliCDBGridParam* other = (AliCDBGridParam*) obj;
696
697         if(fGridUrl != other->fGridUrl) return kFALSE;
698         if(fUser != other->fUser) return kFALSE;
699         if(fDBFolder != other->fDBFolder) return kFALSE;
700         if(fSE != other->fSE) return kFALSE;
701         return kTRUE;
702 }
703