Bizarre problem JDBC/SDO_UNION on insert

Question

Hi,
I've got a case where I am trying to do an SDO_UNION on two shapes and use the result as part of an INSERT statement. Note that I am doing this through JDBC calls out of Java.
Unfortunately, I am encountering a bizarre problem... when I call the SDO_UNION operator through JDBC, the result is null... BUT if I paste the same code into SQLPlus, the operation works fine!!!
I've got examples of the statement I am using below.
Does anyone have a suggestion? If you could email me at [email protected], I'd be most greatful and I'd post back here.
Thanks!!!
INSERT INTO TEMP_MARKET_FOLDER
(TEMP_MARKET_FOLDER_ID,
UNIQUE_CODE,
SHAPE)
VALUES
(TEMP_MARKET_FOLDER_SQ.NextVal,
't7346E28179786E7', (SELECT SDO_GEOM.SDO_UNION(sel_0.GEOLOC, m.diminfo, sel_1.SHAPE, m.diminfo)
FROM VECTIV.US_CNTY sel_0, TEMP_MARKET_FOLDER sel_1, user_sdo_geom_metadata m
WHERE UPPER(m.table_name) = UPPER('US_CNTY') AND m.column_name = 'GEOLOC'
AND sel_0.MI_PRINX = 221.0 AND sel_1.UNIQUE_CODE = 't669626728A516568'))

Answer 1

Hi Indrek,
I did the following, which worked. You may want to revisit and see if you can determine where the problem is coming from. Note that I ran validate_geometry below - you may want to run it for your whole table.
Hope this helps,
dan
create table technet(gid number, mygeom mdsys.sdo_geometry);
insert into technet values (1,
mdsys.SDO_GEOMETRY(3, NULL, NULL,
mdsys.SDO_ELEM_INFO_ARRAY(1, 3, 1),
mdsys.SDO_ORDINATE_ARRAY(541200, 6591250, 541200, 6591350,
541400, 6591350, 541400, 6591250, 541200, 6591250)));
insert into technet values (2,
mdsys.SDO_GEOMETRY(3, NULL, NULL,
mdsys.SDO_ELEM_INFO_ARRAY(1, 3, 1),
mdsys.SDO_ORDINATE_ARRAY(541150, 6591150, 541150, 6591250,
541350, 6591250, 541350, 6591150, 541150, 6591150)));
insert into technet values (3,
mdsys.SDO_GEOMETRY(3, NULL, NULL,
mdsys.SDO_ELEM_INFO_ARRAY(1, 3, 1),
mdsys.SDO_ORDINATE_ARRAY(541600, 6590750, 541600, 6590850,
541750, 6590850, 541750, 6590750, 541600, 6590750)));
insert into technet values (4,
mdsys.SDO_GEOMETRY(3, NULL, NULL,
mdsys.SDO_ELEM_INFO_ARRAY(1, 3, 1),
mdsys.SDO_ORDINATE_ARRAY(541650, 6590000, 541450, 6590150, 541450,
6590250, 541300, 6590350, 541450, 6590500, 541750, 6590650,
542050, 6590650, 542100, 6590550, 542100, 6590300, 542000,
6590100, 541750, 6590000, 541650, 6590000)));
select mdsys.sdo_geom.validate_geometry(mygeom,
MDSYS.SDO_DIM_ARRAY(
MDSYS.SDO_DIM_ELEMENT('X',0,7000000,0.000005),
MDSYS.SDO_DIM_ELEMENT('Y',0,70000000,0.000005))) status,gid
from technet;
declare
temp_geom1 mdsys.sdo_geometry;
mygeom mdsys.sdo_geometry;
cursor area_cur is select mygeom from technet;
dim_info mdsys.sdo_dim_array := mdsys.sdo_dim_array(
MDSYS.SDO_DIM_ELEMENT('X',0,7000000,0.000005),
MDSYS.SDO_DIM_ELEMENT('Y',0,70000000,0.000005));
begin
temp_geom1 := null;
for area_rec in area_cur loop
temp_geom1 := mdsys.sdo_geom.sdo_union(temp_geom1, dim_info, area_rec.mygeom, dim_info);
end loop;
end;
null