Spatial Query that uses Result of another Spatial Query

Question

Hi all,
I am using the SDO_DIFFERENCE Operator to return the difference between a query window and an intersection geometry. This is fine and i get an object back that is cast to a STRUCT using the SDO API. I want then to use this (returned)object in another SQL query that uses the SDO_RELATE Operator. The problem is that i dont know what type it needs to be so that the SDO_RELATE operator will accept it as a valid argument. Has anyone done this before or seen anything like it? Any help will be very much appreciated.
Keith.

Answer 1

Thanks for your help,
I have done the following steps, but i still dont understand why it doesnt work.
CREATE TABLE val_results (sdo_rowid ROWID, result varchar2(1000));
CALL SDO_GEOM.VALIDATE_LAYER_WITH_CONTEXT('SHAPES','SHAPE','VAL_RESULTS');
SELECT * FROM val_results;
1 null     Rows Processed <3>
2 AAARDDAAEAAAAA+AAA     13348 [Element <1>] [Ring <1>]
3 AAARDDAAEAAAAA+AAB     13367 [Element <1>] [Ring <1>]
SELECT shape_id,SDO_GEOM.VALIDATE_GEOMETRY_WITH_CONTEXT(c.shape, 0.005)
FROM shapes c;
3     TRUE
2     13348 [Element <1>] [Ring <1>]
1     13367 [Element <1>] [Ring <1>]
If my rectangle and polygon is still invalid, can someone tell me why they are invalid. And how can i make them valid?
Thanks.
UPDATE:
I have solved Polygon issue.
In Spatial Developer's Guide it says:
Simple polygon whose vertices are connected by straight line
segments. You must specify a point for each vertex; and the
last point specified must be exactly the same point as the first
(within the tolerance value), to close the polygon. For
example, for a 4-sided polygon, specify 5 points, with point 5
the same as point 1.
I have added a point to polygon which is same as first point. Now, it can find the point in polygon.
INSERT INTO shapes VALUES (4, 'Polygon', SDO_GEOMETRY(2003, NULL, NULL, SDO_ELEM_INFO_ARRAY(1,1003,1), SDO_ORDINATE_ARRAY(306,193,130,441,489,653,88,183,442,354,306,193)));
But, when i run this query again:
SELECT shape_id,SDO_GEOM.VALIDATE_GEOMETRY_WITH_CONTEXT(c.shape, 0.005) FROM shapes c;
4     13349 [Element <1>] [Ring <1>][Edge <4>][Edge <1>]
3     TRUE
2     13348 [Element <1>] [Ring <1>]
1     13367 [Element <1>] [Ring <1>]
it doesn't say TRUE like it did for Circle ??
Edited by: WhiteScars on Jan 4, 2010 12:45 AM