Spatial query on view to another schema

Question

Hi,
I am getting the following error on this query :
select ufi from cadastre where
sdo_filter(geometry,
mdsys.sdo_geometry(2003,8311,NULL,
sdo_elem_info_array(1,1003,3),
sdo_ordinate_array(130.967,-12.510,131.000,-12.486))) = 'TRUE';
ORA-13226: interface not supported without a spatial index
Cadastre is a view of a table stored in another schema.
This query works :
select ufi from sdo_owner.parcel where
sdo_filter(geometry,
mdsys.sdo_geometry(2003,8311,NULL,
sdo_elem_info_array(1,1003,3),
sdo_ordinate_array(130.967,-12.510,131.000,-12.486))) = 'TRUE';
I have an entry in user_sdo_geom_metadata for CADASTRE , do i also need an entry in user_sdo_index_info for the query to work.
Does any one have any ideas ?
James

Answer 1

Dan,
I have worked out why it happens. We have a parcel table that is made up of polygons and points. The points are parcel's that have no legal boundary or survey boundary, just a point where a house might be located.
What i had forgotten was that i had created a function to convert these points into a polygon on the fly. This buffer function is called from the view.
example
create view cadastre
as
select
ufi,
parcel_key,
buffer(geometry) "GEOMETRY"
from sdo_owner.parcel;
I am guessing that because the geometry is no longer geometry from a table but created geometry it does not have a spatial index associated with it.
Here is the buffer function
CREATE OR REPLACE FUNCTION buffer
geometry MDSYS.SDO_GEOMETRY,
layer_name VARCHAR2
RETURN MDSYS.SDO_GEOMETRY
AS
temp_geom MDSYS.SDO_GEOMETRY;
diminfo MDSYS.SDO_DIM_ARRAY;
start_x FLOAT;
start_y FLOAT;
end_x FLOAT;
end_y FLOAT;
BEGIN
SELECT u.diminfo INTO diminfo
FROM user_sdo_geom_metadata u
WHERE u.table_name = UPPER(layer_name);
IF geometry.GET_GTYPE() = 1 THEN
temp_geom := sdo_geom.sdo_buffer(geometry,diminfo,4,'units=m arc_tolerance=0.005');
return temp_geom;
END IF;
IF geometry.GET_GTYPE() = 2 THEN
temp_geom := sdo_geom.sdo_buffer(geometry,diminfo,4,'units=m arc_tolerance=0.005');
RETURN temp_geom;
END IF;
IF geometry.GET_GTYPE() = 6 THEN
temp_geom := sdo_geom.sdo_buffer(geometry,diminfo,4,'units=m arc_tolerance=0.005');
RETURN temp_geom;
END IF;
RETURN geometry;
END;
James