ARRAY2LWGEOM()

LWGEOM** ARRAY2LWGEOM	(	ArrayType *	array,
		uint32_t	nelems,
		int *	is3d,
		int *	srid
	)

Definition at line 1858 of file postgis/lwgeom_geos.c.

{
    ArrayIterator iterator;
    Datum value;
    bool isnull;
    bool gotsrid = false;
    uint32_t i = 0;
 
        LWGEOM** lw_geoms = palloc(nelems * sizeof(LWGEOM*));
 
    iterator = array_create_iterator(array, 0, NULL);
 
    while (array_iterate(iterator, &value, &isnull))
    {
            GSERIALIZED *geom = (GSERIALIZED *)DatumGetPointer(value);
 
            if (isnull)
                    continue;
 
            *is3d = *is3d || gserialized_has_z(geom);
 
            lw_geoms[i] = lwgeom_from_gserialized(geom);
            if (!lw_geoms[i]) /* error in creation */
            {
                    lwpgerror("Geometry deserializing geometry");
                    return NULL;
            }
            if (!gotsrid)
            {
                    gotsrid = true;
                    *srid = gserialized_get_srid(geom);
            }
            else
                    gserialized_error_if_srid_mismatch_reference(geom, *srid, __func__);
 
            i++;
    }
 
        return lw_geoms;
}

References gserialized_error_if_srid_mismatch_reference(), gserialized_get_srid(), gserialized_has_z(), lwgeom_from_gserialized(), and genraster::value.

Referenced by cluster_within_distance_garray().

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