gserialized_datum_get_box2df_p()

int gserialized_datum_get_box2df_p	(	Datum	gsdatum,
		BOX2DF *	box2df
	)

Definition at line 527 of file gserialized_gist_2d.c.

{
        int result = LW_SUCCESS;
        GSERIALIZED *gpart = NULL;
        int need_detoast = PG_GSERIALIZED_DATUM_NEEDS_DETOAST((struct varlena *)gsdatum);
        if (need_detoast)
        {
                gpart = (GSERIALIZED *)PG_DETOAST_DATUM_SLICE(gsdatum, 0, gserialized_max_header_size());
        }
        else
        {
                gpart = (GSERIALIZED *)gsdatum;
        }
 
        if (gserialized_has_bbox(gpart))
        {
                size_t box_ndims;
                const float *f = gserialized_get_float_box_p(gpart, &box_ndims);
                memcpy(box2df, f, sizeof(BOX2DF));
                result = LW_SUCCESS;
        }
        else
        {
                GBOX gbox = {0};
                if (need_detoast && LWSIZE_GET(gpart->size) >= gserialized_max_header_size())
                {
                        /* The headers don't contain a bbox and the object is larger than what we retrieved, so
                         * we now detoast it completely and recheck */
                        POSTGIS_FREE_IF_COPY_P(gpart, gsdatum);
                        gpart = (GSERIALIZED *)PG_DETOAST_DATUM(gsdatum);
                }
                result = gserialized_get_gbox_p(gpart, &gbox);
                if (result == LW_SUCCESS)
                {
                        result = box2df_from_gbox_p(&gbox, box2df);
                }
                else {
                        /* Oh dear, has someone fed us an empty? */
                        POSTGIS_FREE_IF_COPY_P(gpart, gsdatum);
                        gpart = (GSERIALIZED *)PG_DETOAST_DATUM(gsdatum);
                        if (gserialized_is_empty(gpart))
                        {
                                box2df_set_empty(box2df);
                                return LW_SUCCESS;
                        }
                }
        }
 
        POSTGIS_FREE_IF_COPY_P(gpart, gsdatum);
        return result;
}

References box2df_from_gbox_p(), box2df_set_empty(), gserialized_get_float_box_p(), gserialized_get_gbox_p(), gserialized_has_bbox(), gserialized_is_empty(), gserialized_max_header_size(), LW_SUCCESS, LWSIZE_GET, POSTGIS_FREE_IF_COPY_P, result, and GSERIALIZED::size.

Referenced by geom2d_brin_inclusion_add_value(), gserialized_datum_predicate_2d(), gserialized_datum_predicate_box2df_geom_2d(), gserialized_distance_box_2d(), gserialized_distance_centroid_2d(), gserialized_gist_compress_2d(), gserialized_gist_consistent_2d(), gserialized_gist_distance_2d(), gserialized_spgist_compress_2d(), gserialized_spgist_inner_consistent_2d(), and gserialized_spgist_leaf_consistent_2d().

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