int OGRIngresDataSource::FetchSRSId( OGRSpatialReference * poSRS )
{
char **papszRow;
char szCommand[10000];
char *pszWKT = NULL;
char *pszProj4 = NULL;
const char *pszAuthName;
const char *pszAuthID;
int nSRSId;
if( poSRS == NULL )
return -1;
/* -------------------------------------------------------------------- */
/* If it is a EPSG Spatial Reference, search with special type */
/* -------------------------------------------------------------------- */
pszAuthName = poSRS->GetAuthorityName(NULL);
pszAuthID = poSRS->GetAuthorityCode(NULL);
if (pszAuthName && pszAuthID && EQUAL(pszAuthName, "EPSG"))
{
sprintf( szCommand,
"SELECT srid FROM spatial_ref_sys WHERE auth_name = 'EPSG' and auth_srid= %s",
pszAuthID );
OGRIngresStatement oStateSRID(GetConn());
oStateSRID.ExecuteSQL(szCommand);
papszRow = oStateSRID.GetRow();
if (papszRow == NULL)
{
CPLDebug("INGRES", "No rows exists matching EPSG:%s in spatial_ref_sys", pszAuthID );
}
else if( papszRow != NULL && papszRow[0] != NULL )
{
nSRSId = *((II_INT4 *)papszRow[0]);
return nSRSId;
}
}
/* -------------------------------------------------------------------- */
/* Translate SRS to WKT. */
/* -------------------------------------------------------------------- */
if( poSRS->exportToWkt( &pszWKT ) != OGRERR_NONE )
return -1;
/* -------------------------------------------------------------------- */
/* Translate SRS to Proj4. */
/* -------------------------------------------------------------------- */
if( poSRS->exportToProj4( &pszProj4 ) != OGRERR_NONE )
return -1;
CPLAssert( strlen(pszProj4) + strlen(pszWKT) < sizeof(szCommand) - 500 );
/* -------------------------------------------------------------------- */
/* Try to find in the existing table. */
/* -------------------------------------------------------------------- */
sprintf( szCommand,
"SELECT srid FROM spatial_ref_sys WHERE srtext = '%s'",
pszWKT );
{
OGRIngresStatement oStateSRID(GetConn());
oStateSRID.ExecuteSQL(szCommand);
papszRow = oStateSRID.GetRow();
if (papszRow == NULL)
{
CPLDebug("INGRES", "No rows exist currently exist in spatial_ref_sys");
}
else if( papszRow != NULL && papszRow[0] != NULL )
{
nSRSId = *((II_INT4 *)papszRow[0]);
return nSRSId;
}
}
/* -------------------------------------------------------------------- */
/* Get the current maximum srid in the srs table. */
/* -------------------------------------------------------------------- */
sprintf( szCommand,
"SELECT MAX(srid) FROM spatial_ref_sys");
{
OGRIngresStatement oStateMaxSRID(GetConn());
oStateMaxSRID.ExecuteSQL(szCommand);
papszRow = oStateMaxSRID.GetRow();
// The spatial reference created by user must be greater than
// the 10000. The below are system maintained.
#define USER_DEFINED_SR_START 10000
if( papszRow != NULL && papszRow[0] != NULL )
{
// if there is no row in spatial reference, a random value
// will be return, how to judge?
nSRSId = *((II_INT4 *)papszRow[0]) ;
if (nSRSId <= 0)
{
nSRSId = USER_DEFINED_SR_START+1;
}
else
{
nSRSId = *((II_INT4 *)papszRow[0]) + 1;
}
}
else
nSRSId = USER_DEFINED_SR_START+1;
}
if(pszAuthName == NULL || strlen(pszAuthName) == 0)
{
poSRS->AutoIdentifyEPSG();
pszAuthName = poSRS->GetAuthorityName(NULL);
if (pszAuthName != NULL && EQUAL(pszAuthName, "EPSG"))
{
const char* pszAuthorityCode = poSRS->GetAuthorityCode(NULL);
if ( pszAuthorityCode != NULL && strlen(pszAuthorityCode) > 0 )
{
/* Import 'clean' SRS */
poSRS->importFromEPSG( atoi(pszAuthorityCode) );
pszAuthName = poSRS->GetAuthorityName(NULL);
pszAuthID = poSRS->GetAuthorityCode(NULL);
}
}
}
/* -------------------------------------------------------------------- */
/* Try adding the SRS to the SRS table. */
/* -------------------------------------------------------------------- */
if(pszAuthName != NULL)
{
sprintf( szCommand,
"INSERT INTO spatial_ref_sys (srid,auth_name,auth_srid,"
"srtext,proj4text) VALUES (%d,'%s',%s,'%s','%s')",
nSRSId, pszAuthName, pszAuthID, pszWKT, pszProj4 );
}
else
{
sprintf( szCommand,
"INSERT INTO spatial_ref_sys (srid,auth_name,auth_srid,"
"srtext,proj4text) VALUES (%d,NULL,NULL,'%s','%s')",
nSRSId, pszWKT, pszProj4 );
}
{
OGRIngresStatement oStateNewSRID(GetConn());
if(!oStateNewSRID.ExecuteSQL(szCommand))
{
CPLDebug("INGRES", "Failed to create new spatial reference system");
}
}
return nSRSId;
}
int OGRIngresDataSource::FetchSRSId( OGRSpatialReference * poSRS )
{
char **papszRow;
char szCommand[10000];
char *pszWKT = NULL;
char *pszProj4 = NULL;
const char *pszAuthName;
const char *pszAuthID;
int nSRSId;
if( poSRS == NULL )
return -1;
/* -------------------------------------------------------------------- */
/* Translate SRS to WKT. */
/* -------------------------------------------------------------------- */
if( poSRS->exportToWkt( &pszWKT ) != OGRERR_NONE )
return -1;
/* -------------------------------------------------------------------- */
/* Translate SRS to Proj4. */
/* -------------------------------------------------------------------- */
if( poSRS->exportToProj4( &pszProj4 ) != OGRERR_NONE )
return -1;
CPLAssert( strlen(pszProj4) + strlen(pszWKT) < sizeof(szCommand) - 500 );
/* -------------------------------------------------------------------- */
/* Try to find in the existing table. */
/* -------------------------------------------------------------------- */
sprintf( szCommand,
"SELECT srid FROM spatial_ref_sys WHERE srtext = '%s'",
pszWKT );
{
OGRIngresStatement oStateSRID(GetConn());
oStateSRID.ExecuteSQL(szCommand);
papszRow = oStateSRID.GetRow();
if (papszRow == NULL)
{
CPLDebug("INGRES", "No rows exist currently exist in spatial_ref_sys");
}
else if( papszRow != NULL && papszRow[0] != NULL )
{
nSRSId = *((II_INT4 *)papszRow[0]);
return nSRSId;
}
}
/* -------------------------------------------------------------------- */
/* Get the current maximum srid in the srs table. */
/* -------------------------------------------------------------------- */
sprintf( szCommand,
"SELECT MAX(srid) FROM spatial_ref_sys");
{
OGRIngresStatement oStateMaxSRID(GetConn());
oStateMaxSRID.ExecuteSQL(szCommand);
papszRow = oStateMaxSRID.GetRow();
if( papszRow != NULL && papszRow[0] != NULL )
{
nSRSId = *((II_INT4 *)papszRow[0]) + 1;
}
else
nSRSId = 1;
}
pszAuthName = poSRS->GetAuthorityName(NULL);
pszAuthID = poSRS->GetAuthorityCode(NULL);
if(pszAuthName == NULL || strlen(pszAuthName) == 0)
{
poSRS->AutoIdentifyEPSG();
pszAuthName = poSRS->GetAuthorityName(NULL);
if (pszAuthName != NULL && EQUAL(pszAuthName, "EPSG"))
{
const char* pszAuthorityCode = poSRS->GetAuthorityCode(NULL);
if ( pszAuthorityCode != NULL && strlen(pszAuthorityCode) > 0 )
{
/* Import 'clean' SRS */
poSRS->importFromEPSG( atoi(pszAuthorityCode) );
pszAuthName = poSRS->GetAuthorityName(NULL);
pszAuthID = poSRS->GetAuthorityCode(NULL);
}
}
}
/* -------------------------------------------------------------------- */
/* Try adding the SRS to the SRS table. */
/* -------------------------------------------------------------------- */
if(pszAuthName != NULL)
{
sprintf( szCommand,
"INSERT INTO spatial_ref_sys (srid,auth_name,auth_srid,"
"srtext,proj4text) VALUES (%d,'%s',%s,'%s','%s')",
nSRSId, pszAuthName, pszAuthID, pszWKT, pszProj4 );
}
else
{
sprintf( szCommand,
"INSERT INTO spatial_ref_sys (srid,auth_name,auth_srid,"
"srtext,proj4text) VALUES (%d,NULL,NULL,'%s','%s')",
nSRSId, pszWKT, pszProj4 );
}
{
OGRIngresStatement oStateNewSRID(GetConn());
if(!oStateNewSRID.ExecuteSQL(szCommand))
{
CPLDebug("INGRES", "Failed to create new spatial reference system");
}
}
return nSRSId;
}