OGRLayer * OGRWalkDataSource::ExecuteSQL( const char *pszSQLCommand,
OGRGeometry *poSpatialFilter,
const char *pszDialect )
{
/* -------------------------------------------------------------------- */
/* Use generic implementation for recognized dialects */
/* -------------------------------------------------------------------- */
if( IsGenericSQLDialect(pszDialect) )
return OGRDataSource::ExecuteSQL( pszSQLCommand,
poSpatialFilter,
pszDialect );
/* -------------------------------------------------------------------- */
/* Execute normal SQL statement in Walk. */
/* Table_name = Layer_name + Postfix */
/* Postfix: "Features", "Annotations" or "Styles" */
/* -------------------------------------------------------------------- */
CPLODBCStatement *poStmt = new CPLODBCStatement( &oSession );
CPLDebug( "Walk", "ExecuteSQL(%s) called.", pszSQLCommand );
poStmt->Append( pszSQLCommand );
if( !poStmt->ExecuteSQL() )
{
CPLError( CE_Failure, CPLE_AppDefined,
"%s", oSession.GetLastError() );
delete poStmt;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Are there result columns for this statement? */
/* -------------------------------------------------------------------- */
if( poStmt->GetColCount() == 0 )
{
delete poStmt;
CPLErrorReset();
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a results layer. It will take ownership of the */
/* statement. */
/* -------------------------------------------------------------------- */
OGRWalkSelectLayer *poLayer = NULL;
poLayer = new OGRWalkSelectLayer( this, poStmt );
if( poSpatialFilter != NULL )
poLayer->SetSpatialFilter( poSpatialFilter );
return poLayer;
}
OGRLayer * OGRODBCDataSource::ExecuteSQL( const char *pszSQLCommand,
OGRGeometry *poSpatialFilter,
const char *pszDialect )
{
/* -------------------------------------------------------------------- */
/* Use generic implementation for recognized dialects */
/* -------------------------------------------------------------------- */
if( IsGenericSQLDialect(pszDialect) )
return OGRDataSource::ExecuteSQL( pszSQLCommand,
poSpatialFilter,
pszDialect );
/* -------------------------------------------------------------------- */
/* Execute statement. */
/* -------------------------------------------------------------------- */
CPLODBCStatement *poStmt = new CPLODBCStatement( &oSession );
CPLDebug( "ODBC", "ExecuteSQL(%s) called.", pszSQLCommand );
poStmt->Append( pszSQLCommand );
if( !poStmt->ExecuteSQL() )
{
CPLError( CE_Failure, CPLE_AppDefined,
"%s", oSession.GetLastError() );
delete poStmt;
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Are there result columns for this statement? */
/* -------------------------------------------------------------------- */
if( poStmt->GetColCount() == 0 )
{
delete poStmt;
CPLErrorReset();
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Create a results layer. It will take ownership of the */
/* statement. */
/* -------------------------------------------------------------------- */
OGRODBCSelectLayer* poLayer = new OGRODBCSelectLayer( this, poStmt );
if( poSpatialFilter != nullptr )
poLayer->SetSpatialFilter( poSpatialFilter );
return poLayer;
}
OGRLayer * OGRGeomediaDataSource::ExecuteSQL( const char *pszSQLCommand,
OGRGeometry *poSpatialFilter,
const char *pszDialect )
{
/* -------------------------------------------------------------------- */
/* Use generic imlplementation for OGRSQL dialect. */
/* -------------------------------------------------------------------- */
if( pszDialect != NULL && EQUAL(pszDialect,"OGRSQL") )
return OGRDataSource::ExecuteSQL( pszSQLCommand,
poSpatialFilter,
pszDialect );
/* -------------------------------------------------------------------- */
/* Execute statement. */
/* -------------------------------------------------------------------- */
CPLODBCStatement *poStmt = new CPLODBCStatement( &oSession );
poStmt->Append( pszSQLCommand );
if( !poStmt->ExecuteSQL() )
{
CPLError( CE_Failure, CPLE_AppDefined,
"%s", oSession.GetLastError() );
return NULL;
}
/* -------------------------------------------------------------------- */
/* Are there result columns for this statement? */
/* -------------------------------------------------------------------- */
if( poStmt->GetColCount() == 0 )
{
delete poStmt;
CPLErrorReset();
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a results layer. It will take ownership of the */
/* statement. */
/* -------------------------------------------------------------------- */
OGRGeomediaSelectLayer *poLayer = NULL;
poLayer = new OGRGeomediaSelectLayer( this, poStmt );
if( poSpatialFilter != NULL )
poLayer->SetSpatialFilter( poSpatialFilter );
return poLayer;
}
int OGRMSSQLSpatialTableLayer::GetFeatureCount( int bForce )
{
GetLayerDefn();
if( TestCapability(OLCFastFeatureCount) == FALSE )
return OGRMSSQLSpatialLayer::GetFeatureCount( bForce );
ClearStatement();
CPLODBCStatement* poStatement = BuildStatement( "count(*)" );
if (poStatement == NULL || !poStatement->Fetch())
{
delete poStatement;
return OGRMSSQLSpatialLayer::GetFeatureCount( bForce );
}
int nRet = atoi(poStatement->GetColData( 0 ));
delete poStatement;
return nRet;
}
int OGRMSSQLSpatialTableLayer::FetchSRSId()
{
CPLODBCStatement oStatement = CPLODBCStatement( poDS->GetSession() );
oStatement.Appendf( "select srid from geometry_columns "
"where f_table_schema = '%s' and f_table_name = '%s'",
pszSchemaName, pszTableName );
if( oStatement.ExecuteSQL() && oStatement.Fetch() )
{
if ( oStatement.GetColData( 0 ) )
nSRSId = atoi( oStatement.GetColData( 0 ) );
}
return nSRSId;
}
CPLODBCStatement* OGRMSSQLSpatialTableLayer::BuildStatement(const char* pszColumns)
{
CPLODBCStatement* poStatement = new CPLODBCStatement( poDS->GetSession() );
poStatement->Append( "select " );
poStatement->Append( pszColumns );
poStatement->Append( " from " );
poStatement->Append( pszSchemaName );
poStatement->Append( "." );
poStatement->Append( pszTableName );
/* Append attribute query if we have it */
if( pszQuery != NULL )
poStatement->Appendf( " where (%s)", pszQuery );
/* If we have a spatial filter, query on it */
if ( m_poFilterGeom != NULL )
{
if (nGeomColumnType == MSSQLCOLTYPE_GEOMETRY
|| nGeomColumnType == MSSQLCOLTYPE_GEOGRAPHY)
{
if( pszQuery == NULL )
poStatement->Append( " where" );
else
poStatement->Append( " and" );
poStatement->Appendf(" [%s].STIntersects(", pszGeomColumn );
if (nGeomColumnType == MSSQLCOLTYPE_GEOGRAPHY)
poStatement->Append( "geography::" );
else
poStatement->Append( "geometry::" );
if ( m_sFilterEnvelope.MinX == m_sFilterEnvelope.MaxX ||
m_sFilterEnvelope.MinY == m_sFilterEnvelope.MaxY)
poStatement->Appendf("STGeomFromText('POINT(%.15g %.15g)',%d)) = 1",
m_sFilterEnvelope.MinX, m_sFilterEnvelope.MinY, nSRSId >= 0? nSRSId : 0);
else
poStatement->Appendf( "STGeomFromText('POLYGON((%.15g %.15g,%.15g %.15g,%.15g %.15g,%.15g %.15g,%.15g %.15g))',%d)) = 1",
m_sFilterEnvelope.MinX, m_sFilterEnvelope.MinY,
m_sFilterEnvelope.MaxX, m_sFilterEnvelope.MinY,
m_sFilterEnvelope.MaxX, m_sFilterEnvelope.MaxY,
m_sFilterEnvelope.MinX, m_sFilterEnvelope.MaxY,
m_sFilterEnvelope.MinX, m_sFilterEnvelope.MinY,
nSRSId >= 0? nSRSId : 0 );
}
else
{
CPLError( CE_Failure, CPLE_AppDefined,
"Spatial filter is supported only on geometry and geography column types." );
delete poStatement;
return NULL;
}
}
CPLDebug( "OGR_MSSQLSpatial", "ExecuteSQL(%s)", poStatement->GetCommand() );
if( poStatement->ExecuteSQL() )
return poStatement;
else
{
delete poStatement;
return NULL;
}
}
OGRLayer * OGRMSSQLSpatialDataSource::ExecuteSQL( const char *pszSQLCommand,
OGRGeometry *poSpatialFilter,
const char *pszDialect )
{
/* -------------------------------------------------------------------- */
/* Use generic imlplementation for OGRSQL dialect. */
/* -------------------------------------------------------------------- */
if( pszDialect != NULL && EQUAL(pszDialect,"OGRSQL") )
return OGRDataSource::ExecuteSQL( pszSQLCommand,
poSpatialFilter,
pszDialect );
/* -------------------------------------------------------------------- */
/* Special case DELLAYER: command. */
/* -------------------------------------------------------------------- */
if( EQUALN(pszSQLCommand,"DELLAYER:",9) )
{
const char *pszLayerName = pszSQLCommand + 9;
while( *pszLayerName == ' ' )
pszLayerName++;
for( int iLayer = 0; iLayer < nLayers; iLayer++ )
{
if( EQUAL(papoLayers[iLayer]->GetName(),
pszLayerName ))
{
DeleteLayer( iLayer );
break;
}
}
return NULL;
}
CPLDebug( "MSSQLSpatial", "ExecuteSQL(%s) called.", pszSQLCommand );
if( EQUALN(pszSQLCommand, "DROP SPATIAL INDEX ON ", 22) )
{
/* Handle command to drop a spatial index. */
OGRMSSQLSpatialTableLayer *poLayer = new OGRMSSQLSpatialTableLayer( this );
if (poLayer)
{
if( poLayer->Initialize( "dbo", pszSQLCommand + 22, NULL, 0, 0, wkbUnknown ) != CE_None )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Failed to initialize layer '%s'", pszSQLCommand + 22 );
}
poLayer->DropSpatialIndex();
delete poLayer;
}
return NULL;
}
else if( EQUALN(pszSQLCommand, "CREATE SPATIAL INDEX ON ", 24) )
{
/* Handle command to create a spatial index. */
OGRMSSQLSpatialTableLayer *poLayer = new OGRMSSQLSpatialTableLayer( this );
if (poLayer)
{
if( poLayer->Initialize( "dbo", pszSQLCommand + 24, NULL, 0, 0, wkbUnknown ) != CE_None )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Failed to initialize layer '%s'", pszSQLCommand + 24 );
}
poLayer->CreateSpatialIndex();
delete poLayer;
}
return NULL;
}
/* Execute the command natively */
CPLODBCStatement *poStmt = new CPLODBCStatement( &oSession );
poStmt->Append( pszSQLCommand );
if( !poStmt->ExecuteSQL() )
{
CPLError( CE_Failure, CPLE_AppDefined,
"%s", oSession.GetLastError() );
delete poStmt;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Are there result columns for this statement? */
/* -------------------------------------------------------------------- */
if( poStmt->GetColCount() == 0 )
{
delete poStmt;
CPLErrorReset();
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a results layer. It will take ownership of the */
/* statement. */
/* -------------------------------------------------------------------- */
OGRMSSQLSpatialSelectLayer *poLayer = NULL;
poLayer = new OGRMSSQLSpatialSelectLayer( this, poStmt );
if( poSpatialFilter != NULL )
poLayer->SetSpatialFilter( poSpatialFilter );
return poLayer;
}
