[postgis-tickets] r17603 - ST_IsEmpty: Speed up by avoiding deserialization

[Raul]

Author: algunenano
Date: 2019-07-15 03:13:23 -0700 (Mon, 15 Jul 2019)
New Revision: 17603

Modified:
   trunk/NEWS
   trunk/postgis/lwgeom_functions_basic.c
Log:
ST_IsEmpty: Speed up by avoiding deserialization

Closes #4453
Closes https://github.com/postgis/postgis/pull/442


Modified: trunk/NEWS
===================================================================
--- trunk/NEWS	2019-07-15 10:08:13 UTC (rev 17602)
+++ trunk/NEWS	2019-07-15 10:13:23 UTC (rev 17603)
@@ -14,6 +14,7 @@
   - #4449, Speed up ST_X, ST_Y, ST_Z and ST_M (Raúl Marín)
   - #4456, add Rasbery Pi 32-bit jenkins bot for testing (Bruce Rindahl)
   - #4454, Speed up _ST_OrderingEquals (Raúl Marín)
+  - #4453, Speed up ST_IsEmpty (Raúl Marín)
 
 PostGIS 3.0.0alpha3
 2019/07/01

Modified: trunk/postgis/lwgeom_functions_basic.c
===================================================================
--- trunk/postgis/lwgeom_functions_basic.c	2019-07-15 10:08:13 UTC (rev 17602)
+++ trunk/postgis/lwgeom_functions_basic.c	2019-07-15 10:13:23 UTC (rev 17603)
@@ -1797,12 +1797,7 @@
 Datum LWGEOM_isempty(PG_FUNCTION_ARGS)
 {
 	GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
-	LWGEOM *lwgeom = lwgeom_from_gserialized(geom);
-	bool empty = lwgeom_is_empty(lwgeom);
-
-	lwgeom_free(lwgeom);
-	PG_FREE_IF_COPY(geom, 0);
-	PG_RETURN_BOOL(empty);
+	PG_RETURN_BOOL(gserialized_is_empty(geom));
 }
 
 /**