OO4O to Retrieve Spatial Data (SDO_GEOMETRY)

Question

Does anyone have any sample code in VB or C++ to retrieve data from the SDO_GEOMETRY object? Any code or suggestions would be much appreciated.

Answer 1

oracle spatial has built-in functions that can do this job,I think you can find in the spatial reference book,here is an example that find the nearest 5 outlet beside a warehouse
REM Finds the 5 closest customers to warehouse_id = 3
REM who reside in NY state, and return the distance in miles,
REM and order the results by distance
REM
REM CUSTOMERS and WAREHOUSES
REM
set lines 132
set pages 1000
select /*+ordered*/
c.customer_id,
c.cust_address.state_province state,
sdo_nn_distance(1) distance_in_miles
from warehouses w,
customers c
where w.warehouse_id = 3
and sdo_nn (c.cust_geo_location, w.wh_geo_location,
'sdo_batch_size =5 unit=mile', 1) = 'TRUE'
and c.cust_address.state_province = 'NY'
and rownum < 6
order by distance_in_miles;