SDO_AGGR_UNION Question

Question

I have extracted geo spatial informaton from a document and created sdo_geometry objects of different types in my database. I have polygons, points, lines, ellipsis, and multipoint types of gtypes. I am trying to aggregate them using SDO_AGGR_UNION. this is sql I am running - the dxc.xml_id is the id of my document which all of the rows have):
select SDO_AGGR_UNION(SDOAGGRTYPE(dxc.shape_geo, 0.005)) from DOCUMENT_GEO dxc where dxc.xml_id = 374;
I get this error:
ORA-29913: error in executing ODCIAGGREGATEITERATE callout
ORA-13031: Invalid Gtype in the SDO_GEOMETRY object for point object
ORA-13031: Invalid Gtype in the SDO_GEOMETRY object for point object
29913. 00000 - "error in executing %s callout"
*Cause: The execution of the specified callout caused an error.
*Action: Examine the error messages take appropriate action.
I am thinking that spatial only support aggregating points with points, polygons with polygons, lines with lines, etc. Can anyone confirm this. The documentation isn't clear. If you can aggregate points with other things I would love to know how its done. Thanks.

Answer 1

680275,
. . . .Multipoints appear to be supported.
. . . .NOTE: the multipoint you listed was missing an EIA-tuple that identifies the last coordinate.
SQL> INSERT INTO foobar (geometry) VALUES (
      MDSYS.SDO_GEOMETRY(2005, 40986, NULL,
      MDSYS.SDO_ELEM_INFO_ARRAY(
            1,1,1,
            3,1,1,
            5,1,1,
            7,1,1), -- "this was the missing EIA tuple"
      MDSYS.SDO_ORDINATE_ARRAY(
            1,2, --"point 1, EIA 1,1,1"
            3,4, --"point 2, EIA 3,1,1"
            1,2, --"point 3, EIA 5,1,1"
            3,4) --"point 4, EIA 7,1,1"
SQL> SELECT t.geometry.sdo_gtype FROM foobar t;
              2003  --"polygon"
              2001  --"point"
              2005  --"multipoint"
              2002  --"line"
4 rows selected.
SQL> SELECT SDO_AGGR_UNION(SDOAGGRTYPE(geometry, 0.005)) from foobar;
SDO_GEOMETRY(
    2004,
    40986,
    NULL,
    SDO_ELEM_INFO_ARRAY(
        1,2,1,
        5,1,3,
        11,1005,3,
            11,2,1,
            39,2,2,
            43,2,1),
    SDO_ORDINATE_ARRAY(
        6075668.22,2231086.91,6075754.6,2231132.45,
        1,2,3,4,  --"look familiar?"
        6061788.51,2165302.52,6067373.34,2283448.5,
        6067415.28,2283445.98,6067462.25,2283443.2,
        6067512.2,2283440.25,6067557.15,2283437.6,
        6067608.88,2283434.54,6067732.73,2283427.23,
        6067762.67,2283425.46,6067781.78,2283422.04,
        6067867.37,2283406.71,6067995.22,2283383.8,
        6068124.42,2283360.66,6068253.62,2283337.51,
        6068382.8,2283314.38,6068390.77,2283312.95,
        6068424.34,2283441.03,6068477.6,2283562.25,
        6068069.52,2283742.62,6068073.71,2283852.77,
        6067842.68,2283848.42,6067586.81,2283843.86,
        6067448.96,2283841.22,6067373.34,2283448.5)). . . .NOTE: the unioning (in sdo_aggr_"UNION") is probably why the duplicate coordinates in the multiple-point geometry were omitted from the aggregate.
Regards,
Noel