STEER/AliCDBLocal.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 // AliCDBLocal                                                                                 //
  19 // access class to a DataBase in a local storage                                               //
  20 //                                                                                             //
  21 /////////////////////////////////////////////////////////////////////////////////////////////////
  22
  23 #include <TSystem.h>
  24 #include <TObjString.h>
  25 #include <TRegexp.h>
  26 #include <TFile.h>
  27 #include <TKey.h>
  28
  29 #include "AliCDBLocal.h"
  30 #include "AliCDBEntry.h"
  31 #include "AliLog.h"
  32
  33 ClassImp(AliCDBLocal)
  34
  35 //_____________________________________________________________________________
  36 AliCDBLocal::AliCDBLocal(const char* baseDir):
  37 fBaseDirectory(baseDir)
  38 {
  39 // constructor
  40
  41         // check baseDire: trying to cd to baseDir; if it does not exist, create it
  42         void* dir = gSystem->OpenDirectory(baseDir);
  43         if (dir == NULL) {
  44                 if (gSystem->mkdir(baseDir, kTRUE)) {
  45                         AliError(Form("Can't open directory <%s>!", baseDir));
  46                 }
  47
  48         } else {
  49                 AliDebug(2,Form("Folder <%s> found",fBaseDirectory.Data()));
  50                 gSystem->FreeDirectory(dir);
  51         }
  52 }
  53
  54 //_____________________________________________________________________________
  55 AliCDBLocal::~AliCDBLocal() {
  56 // destructor
  57
  58 }
  59
  60
  61 //_____________________________________________________________________________
  62 Bool_t AliCDBLocal::FilenameToId(const char* filename, AliCDBRunRange& runRange,
  63 // build AliCDBId from filename numbers
  64
  65         Int_t& version, Int_t& subVersion) {
  66
  67         Ssiz_t mSize;
  68
  69         // valid filename: Run#firstRun_#lastRun_v#version_s#subVersion.root
  70         TRegexp keyPattern("^Run[0-9]+_[0-9]+_v[0-9]+_s[0-9]+.root$");
  71         keyPattern.Index(filename, &mSize);
  72         if (!mSize) {
  73                 AliDebug(2, Form("Bad filename <%s>.", filename));
  74                 return kFALSE;
  75         }
  76
  77         TString idString(filename);
  78         idString.Resize(idString.Length() - sizeof(".root") + 1);
  79
  80         TObjArray* strArray = (TObjArray*) idString.Tokenize("_");
  81
  82         TString firstRunString(((TObjString*) strArray->At(0))->GetString());
  83         runRange.SetFirstRun(atoi(firstRunString.Data() + 3));
  84         runRange.SetLastRun(atoi(((TObjString*) strArray->At(1))->GetString()));
  85
  86         TString verString(((TObjString*) strArray->At(2))->GetString());
  87         version = atoi(verString.Data() + 1);
  88
  89         TString subVerString(((TObjString*) strArray->At(3))->GetString());
  90         subVersion = atoi(subVerString.Data() + 1);
  91
  92         delete strArray;
  93
  94         return kTRUE;
  95 }
  96
  97
  98 //_____________________________________________________________________________
  99 Bool_t AliCDBLocal::IdToFilename(const AliCDBRunRange& runRange, Int_t version,
 100         Int_t subVersion, TString& filename) {
 101 // build file name from AliCDBId data (run range, version, subVersion)
 102
 103         if (!runRange.IsValid()) {
 104                 AliWarning(Form("Invalid run range <%d, %d>.",
 105                         runRange.GetFirstRun(), runRange.GetLastRun()));
 106                 return kFALSE;
 107         }
 108
 109         if (version < 0) {
 110                 AliWarning(Form("Invalid version <%d>.", version));
 111                 return kFALSE;
 112         }
 113
 114         if (subVersion < 0) {
 115                 AliWarning(Form("Invalid subversion <%s>.", subVersion));
 116                 return kFALSE;
 117         }
 118
 119         filename += "Run";
 120         filename += runRange.GetFirstRun();
 121         filename += "_";
 122         filename += runRange.GetLastRun();
 123         filename += "_v";
 124         filename += version;
 125         filename += "_s";
 126         filename += subVersion;
 127         filename += ".root";
 128
 129         return kTRUE;
 130 }
 131
 132 //_____________________________________________________________________________
 133 Bool_t AliCDBLocal::PrepareId(AliCDBId& id) {
 134 // prepare id (version, subVersion) of the object that will be stored (called by PutEntry)
 135
 136         TString dirName;
 137         dirName += fBaseDirectory;
 138         dirName += '/';
 139         dirName += id.GetPath();
 140
 141         // go to the path; if directory does not exist, create it
 142         void* dirPtr = gSystem->OpenDirectory(dirName);
 143         if (!dirPtr) {
 144                 gSystem->mkdir(dirName, kTRUE);
 145                 dirPtr = gSystem->OpenDirectory(dirName);
 146
 147                 if (!dirPtr) {
 148                         AliError(Form("Can't create directory <%s>!",
 149                                         dirName.Data()));
 150                         return kFALSE;
 151                 }
 152         }
 153
 154         const char* filename;
 155         AliCDBRunRange aRunRange; // the runRange got from filename
 156         AliCDBRunRange lastRunRange(-1,-1); // highest runRange found
 157         Int_t aVersion, aSubVersion; // the version subVersion got from filename
 158         Int_t lastVersion = 0, lastSubVersion = -1; // highest version and subVersion found
 159
 160         if (!id.HasVersion()) { // version not specified: look for highest version & subVersion
 161
 162                 while ((filename = gSystem->GetDirEntry(dirPtr))) { // loop on the files
 163
 164                         TString aString(filename);
 165                         if (aString == "." || aString == "..") continue;
 166
 167                         if (!FilenameToId(filename, aRunRange, aVersion,
 168                                 aSubVersion)) {
 169                                 AliWarning(Form(
 170                                         "Bad filename <%s>! I'll skip it.",
 171                                         filename));
 172                                 continue;
 173                         }
 174
 175                         if (!aRunRange.Overlaps(id.GetAliCDBRunRange())) continue;
 176                         if(aVersion < lastVersion) continue;
 177                         if(aVersion > lastVersion) lastSubVersion = -1;
 178                         if(aSubVersion < lastSubVersion) continue;
 179                         lastVersion = aVersion;
 180                         lastSubVersion = aSubVersion;
 181                         lastRunRange = aRunRange;
 182                 }
 183
 184                 id.SetVersion(lastVersion);
 185                 id.SetSubVersion(lastSubVersion + 1);
 186
 187         } else { // version specified, look for highest subVersion only
 188
 189                 while ((filename = gSystem->GetDirEntry(dirPtr))) { // loop on the files
 190
 191                         TString aString(filename);
 192                         if (aString == "." || aString == "..") {
 193                                 continue;
 194                         }
 195
 196                         if (!FilenameToId(filename, aRunRange, aVersion,
 197                                 aSubVersion)) {
 198                                 AliWarning(Form(
 199                                         "Bad filename <%s>!I'll skip it.",
 200                                         filename));
 201                                 continue;
 202                         }
 203
 204                         if (aRunRange.Overlaps(id.GetAliCDBRunRange())
 205                                 && aVersion == id.GetVersion()
 206                                 && aSubVersion > lastSubVersion) {
 207                                 lastSubVersion = aSubVersion;
 208                                 lastRunRange = aRunRange;
 209                         }
 210
 211                 }
 212
 213                 id.SetSubVersion(lastSubVersion + 1);
 214         }
 215
 216         gSystem->FreeDirectory(dirPtr);
 217
 218         TString lastStorage = id.GetLastStorage();
 219         if(lastStorage.Contains(TString("grid"), TString::kIgnoreCase) &&
 220            id.GetSubVersion() > 0 ){
 221                 AliError(Form("Grid to Local Storage error! local object with version v%d_s%d found:",id.GetVersion(), id.GetSubVersion()-1));
 222                 AliError(Form("This object has been already transferred from Grid (check v%d_s0)!",id.GetVersion()));
 223                 return kFALSE;
 224         }
 225
 226         if(lastStorage.Contains(TString("new"), TString::kIgnoreCase) &&
 227            id.GetSubVersion() > 0 ){
 228                 AliWarning(Form("*** WARNING! a NEW object is being stored with version v%d_s%d",
 229                                         id.GetVersion(),id.GetSubVersion()));
 230                 AliWarning(Form("and it will hide previously stored object with v%d_s%d!",
 231                                         id.GetVersion(),id.GetSubVersion()-1));
 232         }
 233
 234         if(!lastRunRange.IsAnyRange() && !(lastRunRange.IsEqual(& id.GetAliCDBRunRange())))
 235                 AliWarning(Form("Run range modified w.r.t. previous version (Run%d_%d_v%d_s%d)",
 236                         lastRunRange.GetFirstRun(), lastRunRange.GetLastRun(),
 237                         id.GetVersion(), id.GetSubVersion()-1));
 238
 239         return kTRUE;
 240 }
 241
 242 //_____________________________________________________________________________
 243 AliCDBId AliCDBLocal::GetId(const AliCDBId& query) {
 244 // look for filename matching query (called by GetEntry)
 245
 246         AliCDBId result(query.GetAliCDBPath(), -1, -1, -1, -1);
 247
 248         TString dirName;
 249         dirName += fBaseDirectory;
 250         dirName += '/';
 251         dirName += query.GetPath(); // dirName = fDBPath/idPath
 252
 253         void* dirPtr = gSystem->OpenDirectory(dirName);
 254         if (!dirPtr) {
 255                 AliError(Form("Directory <%s> not found", (query.GetPath()).Data()));
 256                 AliError(Form("in DB folder %s", fBaseDirectory.Data()));
 257                 return result;
 258         }
 259
 260         const char* filename;
 261
 262         AliCDBRunRange aRunRange; // the runRange got from filename
 263         Int_t aVersion, aSubVersion; // the version and subVersion got from filename
 264
 265         if (!query.HasVersion()) { // neither version and subversion specified -> look for highest version and subVersion
 266
 267                 while ((filename = gSystem->GetDirEntry(dirPtr))) { // loop on files
 268
 269                         TString aString(filename);
 270                         if (aString == "." || aString == "..") continue;
 271
 272                         if (!FilenameToId(filename, aRunRange, aVersion, aSubVersion)) continue;
 273                         // aRunRange, aVersion, aSubVersion filled from filename
 274
 275                         if (!aRunRange.Comprises(query.GetAliCDBRunRange())) continue;
 276                         // aRunRange contains requested run!
 277
 278                         if (result.GetVersion() < aVersion) {
 279                                 result.SetVersion(aVersion);
 280                                 result.SetSubVersion(aSubVersion);
 281
 282                                 result.SetFirstRun(
 283                                         aRunRange.GetFirstRun());
 284                                 result.SetLastRun(
 285                                         aRunRange.GetLastRun());
 286
 287                         } else if (result.GetVersion() == aVersion
 288                                 && result.GetSubVersion()
 289                                         < aSubVersion) {
 290
 291                                 result.SetSubVersion(aSubVersion);
 292
 293                                 result.SetFirstRun(
 294                                         aRunRange.GetFirstRun());
 295                                 result.SetLastRun(
 296                                         aRunRange.GetLastRun());
 297                         } else if (result.GetVersion() == aVersion
 298                                 && result.GetSubVersion() == aSubVersion){
 299                                 AliError(Form("More than one object valid for run %d, version %d_%d!",
 300                                         query.GetFirstRun(), aVersion, aSubVersion));
 301                                 result.SetRunRange(-1,-1); result.SetVersion(-1); result.SetSubVersion(-1);
 302                                 return result;
 303                                 }
 304                 }
 305
 306         } else if (!query.HasSubVersion()) { // version specified but not subversion -> look for highest subVersion
 307
 308                 result.SetVersion(query.GetVersion());
 309
 310                 while ((filename = gSystem->GetDirEntry(dirPtr))) { // loop on files
 311
 312                         TString aString(filename);
 313                         if (aString == "." || aString == "..") continue;
 314
 315                         if (!FilenameToId(filename, aRunRange, aVersion, aSubVersion)) continue;
 316                         // aRunRange, aVersion, aSubVersion filled from filename
 317
 318                         if (!aRunRange.Comprises(query.GetAliCDBRunRange())) continue;
 319                         // aRunRange contains requested run!
 320
 321                         if(query.GetVersion() != aVersion) continue;
 322                         // aVersion is requested version!
 323
 324                         if(result.GetSubVersion() == aSubVersion){
 325                                 AliError(Form("More than one object valid for run %d, version %d_%d!",
 326                                         query.GetFirstRun(), aVersion, aSubVersion));
 327                                 result.SetRunRange(-1,-1); result.SetVersion(-1); result.SetSubVersion(-1);
 328                                 return result;
 329                         }
 330                         if( result.GetSubVersion() < aSubVersion) {
 331
 332                                 result.SetSubVersion(aSubVersion);
 333
 334                                 result.SetFirstRun(
 335                                         aRunRange.GetFirstRun());
 336                                 result.SetLastRun(
 337                                         aRunRange.GetLastRun());
 338                         }
 339                 }
 340
 341         } else { // both version and subversion specified
 342
 343                 while ((filename = gSystem->GetDirEntry(dirPtr))) { // loop on files
 344
 345                         TString aString(filename);
 346                         if (aString == "." || aString == "..") continue;
 347
 348                         if (!FilenameToId(filename, aRunRange, aVersion, aSubVersion)) continue;
 349                         // aRunRange, aVersion, aSubVersion filled from filename
 350
 351                         if (!aRunRange.Comprises(query.GetAliCDBRunRange())) continue;
 352                         // aRunRange contains requested run!
 353
 354                         if(query.GetVersion() != aVersion || query.GetSubVersion() != aSubVersion) continue;
 355                         // aVersion and aSubVersion are requested version and subVersion!
 356
 357                         if(result.GetVersion() == aVersion && result.GetSubVersion() == aSubVersion){
 358                                 AliError(Form("More than one object valid for run %d, version %d_%d!",
 359                                         query.GetFirstRun(), aVersion, aSubVersion));
 360                                 result.SetRunRange(-1,-1); result.SetVersion(-1); result.SetSubVersion(-1);
 361                                 return result;
 362                         }
 363                         result.SetVersion(aVersion);
 364                         result.SetSubVersion(aSubVersion);
 365                         result.SetFirstRun(aRunRange.GetFirstRun());
 366                         result.SetLastRun(aRunRange.GetLastRun());
 367
 368                 }
 369         }
 370
 371         gSystem->FreeDirectory(dirPtr);
 372
 373         return result;
 374 }
 375
 376 //_____________________________________________________________________________
 377 AliCDBEntry* AliCDBLocal::GetEntry(const AliCDBId& queryId) {
 378 // get AliCDBEntry from the database
 379
 380         AliCDBId dataId;
 381
 382         // look for a filename matching query requests (path, runRange, version, subVersion)
 383         if (!queryId.HasVersion()) {
 384                 // if version is not specified, first check the selection criteria list
 385                 dataId = GetId(GetSelection(queryId));
 386         } else {
 387                 dataId = GetId(queryId);
 388         }
 389
 390         if (!dataId.IsSpecified()) return NULL;
 391
 392         TString filename;
 393         if (!IdToFilename(dataId.GetAliCDBRunRange(), dataId.GetVersion(),
 394                  dataId.GetSubVersion(), filename)) {
 395
 396                 AliError("Bad data ID encountered! Subnormal error!");
 397                 return NULL;
 398         }
 399
 400         filename.Prepend((fBaseDirectory +'/' + queryId.GetPath() + '/'));
 401
 402         TFile file(filename, "READ"); // open file
 403         if (!file.IsOpen()) {
 404                 AliError(Form("Can't open file <%s>!", filename.Data()));
 405                 return NULL;
 406         }
 407
 408         // get the only AliCDBEntry object from the file
 409         // the object in the file is an AliCDBEntry entry named "AliCDBEntry"
 410
 411         TObject* anObject = file.Get("AliCDBEntry");
 412         if (!anObject) {
 413                 AliError("Bad storage data: NULL entry object!");
 414                 return NULL;
 415         }
 416
 417         if (AliCDBEntry::Class() != anObject->IsA()) {
 418                 AliError("Bad storage data: Invalid entry object!");
 419                 return NULL;
 420         }
 421
 422         AliCDBId entryId = ((AliCDBEntry* ) anObject)->GetId();
 423
 424         // The object's Id are not reset during storage
 425         // If object's Id runRange or version do not match with filename,
 426         // it means that someone renamed file by hand. In this case a warning msg is issued.
 427
 428         ((AliCDBEntry*) anObject)-> SetLastStorage("local");
 429
 430         if(!((entryId.GetAliCDBRunRange()).IsEqual(& dataId.GetAliCDBRunRange())) ||
 431                 (entryId.GetVersion() != dataId.GetVersion()) || (entryId.GetSubVersion() != dataId.GetSubVersion())){
 432                 AliWarning(Form("Either object Id's RunRange or version do noth match with file name:"));
 433                 AliWarning("someone renamed file by hand!");
 434         }
 435
 436         // close file, return retieved entry
 437         file.Close();
 438         return (AliCDBEntry*) anObject;
 439 }
 440
 441 //_____________________________________________________________________________
 442 void AliCDBLocal::GetEntriesForLevel0(const char* level0,
 443         const AliCDBId& queryId, TList* result) {
 444 // multiple request (AliCDBStorage::GetAll)
 445
 446         TString level0Dir;
 447         level0Dir += fBaseDirectory;
 448         level0Dir += '/';
 449         level0Dir += level0;
 450
 451         void* level0DirPtr = gSystem->OpenDirectory(level0Dir);
 452         if (!level0DirPtr) {
 453                 AliError(Form("Can't open level0 directory <%s>!",
 454                         level0Dir.Data()));
 455                 return;
 456         }
 457
 458         const char* level1;
 459         while ((level1 = gSystem->GetDirEntry(level0DirPtr))) {
 460
 461                 TString level1Str(level1);
 462                 if (level1Str == "." || level1Str == "..") {
 463                         continue;
 464                 }
 465
 466                 if (queryId.GetAliCDBPath().Level1Comprises(level1)) {
 467                         GetEntriesForLevel1(level0, level1, queryId, result);
 468                 }
 469         }
 470
 471         gSystem->FreeDirectory(level0DirPtr);
 472 }
 473
 474 //_____________________________________________________________________________
 475 void AliCDBLocal::GetEntriesForLevel1(const char* level0, const char* level1,
 476         const AliCDBId& queryId, TList* result) {
 477 // multiple request (AliCDBStorage::GetAll)
 478
 479         TString level1Dir;
 480         level1Dir += fBaseDirectory;
 481         level1Dir += '/';
 482         level1Dir += level0;
 483         level1Dir += '/';
 484         level1Dir += level1;
 485
 486         void* level1DirPtr = gSystem->OpenDirectory(level1Dir);
 487         if (!level1DirPtr) {
 488                 AliError(Form("Can't open level1 directory <%s>!",
 489                         level1Dir.Data()));
 490                 return;
 491         }
 492
 493         const char* level2;
 494         while ((level2 = gSystem->GetDirEntry(level1DirPtr))) {
 495
 496                 TString level2Str(level2);
 497                 if (level2Str == "." || level2Str == "..") {
 498                         continue;
 499                 }
 500
 501                 if (queryId.GetAliCDBPath().Level2Comprises(level2)) {
 502
 503                         AliCDBPath entryPath(level0, level1, level2);
 504                         AliCDBId entryId(entryPath, queryId.GetAliCDBRunRange(),
 505                                 queryId.GetVersion(), queryId.GetSubVersion());
 506
 507                         AliCDBEntry* anEntry = GetEntry(entryId);
 508                         if (anEntry) {
 509                                 result->Add(anEntry);
 510                         }
 511                 }
 512         }
 513
 514         gSystem->FreeDirectory(level1DirPtr);
 515 }
 516
 517 //_____________________________________________________________________________
 518 TList* AliCDBLocal::GetEntries(const AliCDBId& queryId) {
 519 // multiple request (AliCDBStorage::GetAll)
 520
 521         void* storageDirPtr = gSystem->OpenDirectory(fBaseDirectory);
 522         if (!storageDirPtr) {
 523                 AliError(Form("Can't open storage directory <%s>",
 524                         fBaseDirectory.Data()));
 525                 return NULL;
 526         }
 527
 528         TList* result = new TList();
 529         result->SetOwner();
 530
 531         const char* level0;
 532         while ((level0 = gSystem->GetDirEntry(storageDirPtr))) {
 533
 534                 TString level0Str(level0);
 535                 if (level0Str == "." || level0Str == "..") {
 536                         continue;
 537                 }
 538
 539                 if (queryId.GetAliCDBPath().Level0Comprises(level0)) {
 540                         GetEntriesForLevel0(level0, queryId, result);
 541                 }
 542         }
 543
 544         gSystem->FreeDirectory(storageDirPtr);
 545
 546         return result;
 547 }
 548
 549 //_____________________________________________________________________________
 550 Bool_t AliCDBLocal::PutEntry(AliCDBEntry* entry) {
 551 // put an AliCDBEntry object into the database
 552
 553         AliCDBId& id = entry->GetId();
 554
 555         // set version and subVersion for the entry to be stored
 556         if (!PrepareId(id)) return kFALSE;
 557
 558
 559         // build filename from entry's id
 560         TString filename;
 561         if (!IdToFilename(id.GetAliCDBRunRange(), id.GetVersion(),
 562                 id.GetSubVersion(), filename)) {
 563
 564                 AliError("Bad ID encountered! Subnormal error!");
 565                 return kFALSE;
 566         }
 567
 568         filename.Prepend(fBaseDirectory +'/' + id.GetPath() + '/');
 569
 570         // open file
 571         TFile file(filename, "CREATE");
 572         if (!file.IsOpen()) {
 573                 AliError(Form("Can't open file <%s>!", filename.Data()));
 574                 return kFALSE;
 575         }
 576
 577         entry->SetVersion(id.GetVersion());
 578         entry->SetSubVersion(id.GetSubVersion());
 579
 580         // write object (key name: "AliCDBEntry")
 581         Bool_t result = file.WriteTObject(entry, "AliCDBEntry");
 582         if (!result) AliError(Form("Can't write entry to file: %s", filename.Data()));
 583
 584         file.Close();
 585         if(result) AliInfo(Form("AliCDBEntry stored into file %s",filename.Data()));
 586
 587         return result;
 588 }
 589
 590 /////////////////////////////////////////////////////////////////////////////////////////////////
 591 //                                                                                             //
 592 // AliCDBLocal factory                                                                         //
 593 //                                                                                             //
 594 /////////////////////////////////////////////////////////////////////////////////////////////////
 595
 596 ClassImp(AliCDBLocalFactory)
 597
 598 //_____________________________________________________________________________
 599 Bool_t AliCDBLocalFactory::Validate(const char* dbString) {
 600 // check if the string is valid local URI
 601
 602         TRegexp dbPattern("^local://.+$");
 603
 604         return TString(dbString).Contains(dbPattern);
 605 }
 606
 607 //_____________________________________________________________________________
 608 AliCDBParam* AliCDBLocalFactory::CreateParameter(const char* dbString) {
 609 // create AliCDBLocalParam class from the URI string
 610
 611         if (!Validate(dbString)) {
 612                 return NULL;
 613         }
 614
 615         TString pathname(dbString + sizeof("local://") - 1);
 616
 617         gSystem->ExpandPathName(pathname);
 618
 619         if (pathname[0] != '/') {
 620                 pathname.Prepend(TString(gSystem->WorkingDirectory()) + '/');
 621         }
 622
 623         AliInfo(pathname);
 624
 625         return new AliCDBLocalParam(pathname);
 626 }
 627
 628 //_____________________________________________________________________________
 629 AliCDBStorage* AliCDBLocalFactory::Create(const AliCDBParam* param) {
 630 // create AliCDBLocal storage instance from parameters
 631
 632         if (AliCDBLocalParam::Class() == param->IsA()) {
 633
 634                 const AliCDBLocalParam* localParam =
 635                         (const AliCDBLocalParam*) param;
 636
 637                 return new AliCDBLocal(localParam->GetPath());
 638         }
 639
 640         return NULL;
 641 }
 642
 643 /////////////////////////////////////////////////////////////////////////////////////////////////
 644 //                                                                                             //
 645 // AliCDBLocal Parameter class                                                                 //                                          //
 646 //                                                                                             //
 647 /////////////////////////////////////////////////////////////////////////////////////////////////
 648
 649 ClassImp(AliCDBLocalParam)
 650
 651 //_____________________________________________________________________________
 652 AliCDBLocalParam::AliCDBLocalParam() {
 653 // default constructor
 654
 655 }
 656
 657 //_____________________________________________________________________________
 658 AliCDBLocalParam::AliCDBLocalParam(const char* dbPath):
 659 fDBPath(dbPath)
 660 {
 661 // constructor
 662
 663         SetType("local");
 664         SetURI(TString("local://") + dbPath);
 665 }
 666
 667 //_____________________________________________________________________________
 668 AliCDBLocalParam::~AliCDBLocalParam() {
 669 // destructor
 670
 671 }
 672
 673 //_____________________________________________________________________________
 674 AliCDBParam* AliCDBLocalParam::CloneParam() const {
 675 // clone parameter
 676
 677         return new AliCDBLocalParam(fDBPath);
 678 }
 679
 680 //_____________________________________________________________________________
 681 ULong_t AliCDBLocalParam::Hash() const {
 682 // return Hash function
 683
 684        return fDBPath.Hash();
 685 }
 686
 687 //_____________________________________________________________________________
 688 Bool_t AliCDBLocalParam::IsEqual(const TObject* obj) const {
 689 // check if this object is equal to AliCDBParam obj
 690
 691         if (this == obj) {
 692                 return kTRUE;
 693         }
 694
 695         if (AliCDBLocalParam::Class() != obj->IsA()) {
 696                 return kFALSE;
 697         }
 698
 699         AliCDBLocalParam* other = (AliCDBLocalParam*) obj;
 700
 701         return fDBPath == other->fDBPath;
 702 }
 703