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oracle provider: optionally use extents from metadata table (implements #8850)

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This commit is contained in:
Juergen E. Fischer 2013-11-05 18:26:33 +01:00
parent e3e22be36f
commit 45fea7b461
1 changed files with 22 additions and 0 deletions
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22
src/providers/oracle/qgsoracleprovider.cpp
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@ -1993,6 +1993,28 @@ QgsRectangle QgsOracleProvider::extent()
QString sql;
QSqlQuery qry( *mConnection );
if ( mUseEstimatedMetadata )
{
if ( exec( qry, QString( "SELECT sdo_lb,sdo_ub FROM mdsys.all_sdo_geom_metadata m, table(m.diminfo) WHERE owner=%1 AND table_name=%2 AND column_name=%3 AND sdo_dimname='X'" )
.arg( quotedValue( mOwnerName ) )
.arg( quotedValue( mTableName ) )
.arg( quotedValue( mGeometryColumn ) ) ) && qry.next() )
{
mLayerExtent.setXMinimum( qry.value( 0 ).toDouble() );
mLayerExtent.setXMaximum( qry.value( 1 ).toDouble() );
if ( exec( qry, QString( "SELECT sdo_lb,sdo_ub FROM mdsys.all_sdo_geom_metadata m, table(m.diminfo) WHERE owner=%1 AND table_name=%2 AND column_name=%3 AND sdo_dimname='Y'" )
.arg( quotedValue( mOwnerName ) )
.arg( quotedValue( mTableName ) )
.arg( quotedValue( mGeometryColumn ) ) ) && qry.next() )
{
mLayerExtent.setYMinimum( qry.value( 0 ).toDouble() );
mLayerExtent.setYMaximum( qry.value( 1 ).toDouble() );
return mLayerExtent;
}
}
}
bool ok = false;
if ( !mSpatialIndex.isNull() && ( mUseEstimatedMetadata || mSqlWhereClause.isEmpty() ) )