OGRErr FGdbDriver::CommitTransaction(OGRDataSource*& poDSInOut, int& bOutHasReopenedDS)
{
CPLMutexHolderOptionalLockD(hMutex);
bOutHasReopenedDS = FALSE;
OGRMutexedDataSource* poMutexedDS = (OGRMutexedDataSource*)poDSInOut;
FGdbDataSource* poDS = (FGdbDataSource* )poMutexedDS->GetBaseDataSource();
FGdbDatabaseConnection* pConnection = poDS->GetConnection();
if( !pConnection->IsLocked() )
{
CPLError(CE_Failure, CPLE_NotSupported,
"No transaction in progress");
return OGRERR_FAILURE;
}
bOutHasReopenedDS = TRUE;
CPLString osName(poMutexedDS->GetName());
CPLString osNameOri(osName);
if( osName[osName.size()-1] == '/' || osName[osName.size()-1] == '\\' )
osName.resize(osName.size()-1);
#ifndef WIN32
int bPerLayerCopyingForTransaction = poDS->HasPerLayerCopyingForTransaction();
#endif
pConnection->m_nRefCount ++;
delete poDSInOut;
poDSInOut = NULL;
poMutexedDS = NULL;
poDS = NULL;
pConnection->CloseGeodatabase();
CPLString osEditedName(osName);
osEditedName += ".ogredited";
#ifndef WIN32
if( bPerLayerCopyingForTransaction )
{
int bError = FALSE;
char** papszFiles;
std::vector<CPLString> aosTmpFilesToClean;
// Check for files present in original copy that are not in edited copy
// That is to say deleted layers
papszFiles = VSIReadDir(osName);
for(char** papszIter = papszFiles; !bError && *papszIter; ++papszIter)
{
if( strcmp(*papszIter, ".") == 0 || strcmp(*papszIter, "..") == 0 )
continue;
VSIStatBufL sStat;
if( (*papszIter)[0] == 'a' &&
VSIStatL( CPLFormFilename(osEditedName, *papszIter, NULL), &sStat ) != 0 )
{
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE1") ||
VSIRename( CPLFormFilename(osName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, "tmp") ) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot rename %s to %s",
CPLFormFilename(osName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, "tmp"));
bError = TRUE;
}
else
aosTmpFilesToClean.push_back(CPLFormFilename(osName, *papszIter, "tmp"));
}
}
CSLDestroy(papszFiles);
// Move modified files from edited directory to main directory
papszFiles = VSIReadDir(osEditedName);
for(char** papszIter = papszFiles; !bError && *papszIter; ++papszIter)
{
if( strcmp(*papszIter, ".") == 0 || strcmp(*papszIter, "..") == 0 )
continue;
struct stat sStat;
if( lstat( CPLFormFilename(osEditedName, *papszIter, NULL), &sStat ) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot stat %s",
CPLFormFilename(osEditedName, *papszIter, NULL));
bError = TRUE;
}
else if( !S_ISLNK(sStat.st_mode) )
{
// If there was such a file in original directory, first rename it
// as a temporary file
if( lstat( CPLFormFilename(osName, *papszIter, NULL), &sStat ) == 0 )
{
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE2") ||
VSIRename( CPLFormFilename(osName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, "tmp") ) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot rename %s to %s",
CPLFormFilename(osName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, "tmp"));
bError = TRUE;
}
else
aosTmpFilesToClean.push_back(CPLFormFilename(osName, *papszIter, "tmp"));
}
if( !bError )
{
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE3") ||
CPLMoveFile( CPLFormFilename(osName, *papszIter, NULL),
CPLFormFilename(osEditedName, *papszIter, NULL) ) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot move %s to %s",
CPLFormFilename(osEditedName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, NULL));
bError = TRUE;
}
else
CPLDebug("FileGDB", "Move %s to %s",
CPLFormFilename(osEditedName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, NULL));
}
}
}
CSLDestroy(papszFiles);
if( !bError )
{
for(size_t i=0;i<aosTmpFilesToClean.size();i++)
{
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE4") ||
VSIUnlink(aosTmpFilesToClean[i]) != 0 )
{
CPLError(CE_Warning, CPLE_AppDefined,
"Cannot remove %s. Manual cleanup required", aosTmpFilesToClean[i].c_str());
}
}
}
if( bError )
{
CPLError(CE_Failure, CPLE_AppDefined,
"An error occurred while moving files from %s back to %s. "
"Manual cleaning must be done and dataset should be closed",
osEditedName.c_str(),
osName.c_str());
pConnection->SetLocked(FALSE);
Release(osName);
return OGRERR_FAILURE;
}
else if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE5") ||
CPLUnlinkTree(osEditedName) != 0 )
{
CPLError(CE_Warning, CPLE_AppDefined,
"Cannot remove %s. Manual cleanup required", osEditedName.c_str());
}
}
else
#endif
{
CPLString osTmpName(osName);
osTmpName += ".ogrtmp";
/* Install the backup copy as the main database in 3 steps : */
/* first rename the main directory in .tmp */
/* then rename the edited copy under regular name */
/* and finally dispose the .tmp directory */
/* That way there's no risk definitely losing data */
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE1") ||
VSIRename(osName, osTmpName) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot rename %s to %s. Edited database during transaction is in %s"
"Dataset should be closed",
osName.c_str(), osTmpName.c_str(), osEditedName.c_str());
pConnection->SetLocked(FALSE);
Release(osName);
return OGRERR_FAILURE;
}
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE2") ||
VSIRename(osEditedName, osName) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot rename %s to %s. The original geodatabase is in '%s'. "
"Dataset should be closed",
osEditedName.c_str(), osName.c_str(), osTmpName.c_str());
pConnection->SetLocked(FALSE);
Release(osName);
return OGRERR_FAILURE;
}
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE3") ||
CPLUnlinkTree(osTmpName) != 0 )
{
CPLError(CE_Warning, CPLE_AppDefined,
"Cannot remove %s. Manual cleanup required", osTmpName.c_str());
}
}
pConnection->m_pGeodatabase = new Geodatabase;
long hr = ::OpenGeodatabase(StringToWString(osName), *(pConnection->m_pGeodatabase));
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE_REOPEN") || FAILED(hr))
{
delete pConnection->m_pGeodatabase;
pConnection->m_pGeodatabase = NULL;
pConnection->SetLocked(FALSE);
Release(osName);
GDBErr(hr, "Failed to re-open Geodatabase. Dataset should be closed");
return OGRERR_FAILURE;
}
FGdbDataSource* pDS = new FGdbDataSource(this, pConnection);
pDS->Open(osNameOri, TRUE, NULL);
//pDS->SetPerLayerCopyingForTransaction(bPerLayerCopyingForTransaction);
poDSInOut = new OGRMutexedDataSource(pDS, TRUE, hMutex, TRUE);
pConnection->SetLocked(FALSE);
return OGRERR_NONE;
}
OGRErr FGdbDriver::StartTransaction(OGRDataSource*& poDSInOut, int& bOutHasReopenedDS)
{
CPLMutexHolderOptionalLockD(hMutex);
bOutHasReopenedDS = FALSE;
OGRMutexedDataSource* poMutexedDS = (OGRMutexedDataSource*)poDSInOut;
FGdbDataSource* poDS = (FGdbDataSource* )poMutexedDS->GetBaseDataSource();
if( !poDS->GetUpdate() )
return OGRERR_FAILURE;
FGdbDatabaseConnection* pConnection = poDS->GetConnection();
if( pConnection->GetRefCount() != 1 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot start transaction as database is opened in another connection");
return OGRERR_FAILURE;
}
if( pConnection->IsLocked() )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Transaction is already in progress");
return OGRERR_FAILURE;
}
bOutHasReopenedDS = TRUE;
CPLString osName(poMutexedDS->GetName());
CPLString osNameOri(osName);
if( osName[osName.size()-1] == '/' || osName[osName.size()-1] == '\\' )
osName.resize(osName.size()-1);
#ifndef WIN32
int bPerLayerCopyingForTransaction = poDS->HasPerLayerCopyingForTransaction();
#endif
pConnection->m_nRefCount ++;
delete poDSInOut;
poDSInOut = NULL;
poMutexedDS = NULL;
poDS = NULL;
pConnection->CloseGeodatabase();
CPLString osEditedName(osName);
osEditedName += ".ogredited";
CPLPushErrorHandler(CPLQuietErrorHandler);
CPL_IGNORE_RET_VAL(CPLUnlinkTree(osEditedName));
CPLPopErrorHandler();
OGRErr eErr = OGRERR_NONE;
CPLString osDatabaseToReopen;
#ifndef WIN32
if( bPerLayerCopyingForTransaction )
{
int bError = FALSE;
if( VSIMkdir( osEditedName, 0755 ) != 0 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Cannot create directory '%s'.",
osEditedName.c_str() );
bError = TRUE;
}
// Only copy a0000000X.Y files with X >= 1 && X <= 8, gdb and timestamps
// and symlink others
char** papszFiles = VSIReadDir(osName);
for(char** papszIter = papszFiles; !bError && *papszIter; ++papszIter)
{
if( strcmp(*papszIter, ".") == 0 || strcmp(*papszIter, "..") == 0 )
continue;
if( ((*papszIter)[0] == 'a' && atoi((*papszIter)+1) >= 1 &&
atoi((*papszIter)+1) <= 8) || EQUAL(*papszIter, "gdb") ||
EQUAL(*papszIter, "timestamps") )
{
if( CPLCopyFile(CPLFormFilename(osEditedName, *papszIter, NULL),
CPLFormFilename(osName, *papszIter, NULL)) != 0 )
{
bError = TRUE;
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot copy %s", *papszIter);
}
}
else
{
CPLString osSourceFile;
if( CPLIsFilenameRelative(osName) )
osSourceFile = CPLFormFilename(CPLSPrintf("../%s", CPLGetFilename(osName.c_str())), *papszIter, NULL);
else
osSourceFile = osName;
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE1") ||
CPLSymlink( osSourceFile,
CPLFormFilename(osEditedName.c_str(), *papszIter, NULL),
NULL ) != 0 )
{
bError = TRUE;
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot symlink %s", *papszIter);
}
}
}
CSLDestroy(papszFiles);
if( bError )
{
eErr = OGRERR_FAILURE;
osDatabaseToReopen = osName;
}
else
osDatabaseToReopen = osEditedName;
}
else
#endif
{
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE1") ||
CPLCopyTree( osEditedName, osName ) != 0 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot backup geodatabase");
eErr = OGRERR_FAILURE;
osDatabaseToReopen = osName;
}
else
osDatabaseToReopen = osEditedName;
}
pConnection->m_pGeodatabase = new Geodatabase;
long hr = ::OpenGeodatabase(StringToWString(osDatabaseToReopen), *(pConnection->m_pGeodatabase));
if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE2") || FAILED(hr))
{
delete pConnection->m_pGeodatabase;
pConnection->m_pGeodatabase = NULL;
Release(osName);
GDBErr(hr, CPLSPrintf("Failed to open %s. Dataset should be closed",
osDatabaseToReopen.c_str()));
return OGRERR_FAILURE;
}
FGdbDataSource* pDS = new FGdbDataSource(this, pConnection);
pDS->Open(osDatabaseToReopen, TRUE, osNameOri);
#ifndef WIN32
if( eErr == OGRERR_NONE && bPerLayerCopyingForTransaction )
{
pDS->SetPerLayerCopyingForTransaction(bPerLayerCopyingForTransaction);
pDS->SetSymlinkFlagOnAllLayers();
}
#endif
poDSInOut = new OGRMutexedDataSource(pDS, TRUE, hMutex, TRUE);
if( eErr == OGRERR_NONE )
pConnection->SetLocked(TRUE);
return eErr;
}