bool BlockTableExists(OWConnection* connection, std::string tableName)
{
std::ostringstream oss;
char szTable[OWNAME]= "";
oss << "select table_name from user_tables where table_name like upper('%%"<< tableName <<"%%') ";
OWStatement* statement = 0;
statement = connection->CreateStatement(oss.str().c_str());
statement->Define(szTable);
try {
statement->Execute();
} catch (std::runtime_error const& ) {
// Assume for now that an error returned here is OCI_NODATA, which means
// the table doesn't exist. If this really isn't the case, we're going
// to get more legit message further down the line.
return false;
// delete statement;
// std::ostringstream oss;
// oss << "Failed select if block table "<< tableName << " exists. Do you have rights to select?"
// << std::endl << e.what() << std::endl;
// throw std::runtime_error(oss.str());
}
return true;
}
bool IsGeographic(OWConnection* connection, long srid)
{
std::ostringstream oss;
char* kind = (char* ) malloc (OWNAME * sizeof(char));
oss << "SELECT COORD_REF_SYS_KIND from MDSYS.SDO_COORD_REF_SYSTEM WHERE SRID = :1";
OWStatement* statement = 0;
statement = connection->CreateStatement(oss.str().c_str());
long* p_srid = (long*) malloc( 1 * sizeof(long));
p_srid[0] = srid;
statement->Bind(p_srid);
statement->Define(kind);
try {
statement->Execute();
} catch (std::runtime_error const& e) {
delete statement;
std::ostringstream oss;
oss << "Failed to fetch geographicness of srid " << srid << std::endl << e.what() << std::endl;
throw std::runtime_error(oss.str());
}
if (compare_no_case(kind, "GEOGRAPHIC2D",12) == 0) {
delete statement;
free(kind);
free(p_srid);
return true;
}
if (compare_no_case(kind, "GEOGRAPHIC3D",12) == 0) {
delete statement;
free(kind);
free(p_srid);
return true;
}
free(kind);
free(p_srid);
return false;
}
const GDALRasterAttributeTable *GeoRasterRasterBand::GetDefaultRAT()
{
if( poDefaultRAT )
{
return poDefaultRAT->Clone();
}
else
{
poDefaultRAT = new GDALRasterAttributeTable();
}
GeoRasterDataset* poGDS = (GeoRasterDataset*) poDS;
// ----------------------------------------------------------
// Get the name of the VAT Table
// ----------------------------------------------------------
char* pszVATName = poGDS->poGeoRaster->GetVAT( nBand );
if( pszVATName == NULL )
{
return NULL;
}
OCIParam* phDesc = NULL;
phDesc = poGDS->poGeoRaster->poConnection->GetDescription( pszVATName );
if( phDesc == NULL )
{
return NULL;
}
// ----------------------------------------------------------
// Create the RAT and the SELECT statemet based on fields description
// ----------------------------------------------------------
int iCol = 0;
char szField[OWNAME];
int hType = 0;
int nSize = 0;
int nPrecision = 0;
signed short nScale = 0;
char szColumnList[OWTEXT];
szColumnList[0] = '\0';
while( poGDS->poGeoRaster->poConnection->GetNextField(
phDesc, iCol, szField, &hType, &nSize, &nPrecision, &nScale ) )
{
switch( hType )
{
case SQLT_FLT:
poDefaultRAT->CreateColumn( szField, GFT_Real, GFU_Generic );
break;
case SQLT_NUM:
if( nPrecision == 0 )
{
poDefaultRAT->CreateColumn( szField, GFT_Integer,
GFU_Generic );
}
else
{
poDefaultRAT->CreateColumn( szField, GFT_Real,
GFU_Generic );
}
break;
case SQLT_CHR:
case SQLT_AFC:
case SQLT_DAT:
case SQLT_DATE:
case SQLT_TIMESTAMP:
case SQLT_TIMESTAMP_TZ:
case SQLT_TIMESTAMP_LTZ:
case SQLT_TIME:
case SQLT_TIME_TZ:
poDefaultRAT->CreateColumn( szField, GFT_String,
GFU_Generic );
break;
default:
CPLDebug("GEORASTER", "VAT (%s) Column (%s) type (%d) not supported"
"as GDAL RAT", pszVATName, szField, hType );
continue;
}
strcpy( szColumnList, CPLSPrintf( "%s substr(%s,1,%d),",
szColumnList, szField, MIN(nSize,OWNAME) ) );
iCol++;
}
szColumnList[strlen(szColumnList) - 1] = '\0'; // remove the last comma
// ----------------------------------------------------------
// Read VAT and load RAT
// ----------------------------------------------------------
OWStatement* poStmt = NULL;
poStmt = poGeoRaster->poConnection->CreateStatement( CPLSPrintf (
"SELECT %s FROM %s", szColumnList, pszVATName ) );
char** papszValue = (char**) CPLMalloc( sizeof(char**) * iCol );
int i = 0;
for( i = 0; i < iCol; i++ )
{
papszValue[i] = (char*) CPLMalloc( sizeof(char*) * OWNAME );
poStmt->Define( papszValue[i] );
}
if( ! poStmt->Execute() )
{
CPLError( CE_Failure, CPLE_AppDefined, "Error reading VAT %s",
pszVATName );
return NULL;
}
int iRow = 0;
while( poStmt->Fetch() )
{
for( i = 0; i < iCol; i++ )
{
poDefaultRAT->SetValue( iRow, i, papszValue[i] );
}
iRow++;
}
for( i = 0; i < iCol; i++ )
{
CPLFree( papszValue[i] );
}
CPLFree( papszValue );
delete poStmt;
CPLFree( pszVATName );
return poDefaultRAT;
}