LWGEOM_force_multi()

Datum LWGEOM_force_multi

(

PG_FUNCTION_ARGS

)

Definition at line 509 of file lwgeom_functions_basic.c.

{
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        GSERIALIZED *result;
        LWGEOM *lwgeom;
        LWGEOM *ogeom;
 
        POSTGIS_DEBUG(2, "LWGEOM_force_multi called");
 
        /*
        ** This funx is a no-op only if a bbox cache is already present
        ** in input. If bbox cache is not there we'll need to handle
        ** automatic bbox addition FOR_COMPLEX_GEOMS.
        */
        if ( gserialized_has_bbox(geom) ) {
                switch (gserialized_get_type(geom))
                {
                        case MULTIPOINTTYPE:
                        case MULTILINETYPE:
                        case MULTIPOLYGONTYPE:
                        case COLLECTIONTYPE:
                        case MULTICURVETYPE:
                        case MULTISURFACETYPE:
                        case TINTYPE:
                                PG_RETURN_POINTER(geom);
                        default:
                                break;
                }
        }
 
        /* deserialize into lwgeoms[0] */
        lwgeom = lwgeom_from_gserialized(geom);
        ogeom = lwgeom_as_multi(lwgeom);
 
        result = geometry_serialize(ogeom);
 
        PG_FREE_IF_COPY(geom, 0);
 
        PG_RETURN_POINTER(result);
}

References COLLECTIONTYPE, geometry_serialize(), gserialized_get_type(), gserialized_has_bbox(), lwgeom_as_multi(), lwgeom_from_gserialized(), MULTICURVETYPE, MULTILINETYPE, MULTIPOINTTYPE, MULTIPOLYGONTYPE, MULTISURFACETYPE, and TINTYPE.

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