STEER/AliCDBGrid.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  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                 AliWarning(Form("A NEW object is being stored with version %d",
 211                                         id.GetVersion()));
 212                 AliWarning(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