From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Fri, 30 Dec 2011 13:23:23 +0000 (+0000)
Subject: Stub in ST_LocateAlong and ST_LocateBetween for implementation before 2.0
X-Git-Tag: 2.0.0alpha1~255
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=30dfb249d216235e666c81560a3234c67d0506e8;p=postgis

Stub in ST_LocateAlong and ST_LocateBetween for implementation before 2.0


git-svn-id: http://svn.osgeo.org/postgis/trunk@8620 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/postgis/sqlmm.sql.in.c b/postgis/sqlmm.sql.in.c
index 1aebf85e0..695f39a61 100644
--- a/postgis/sqlmm.sql.in.c
+++ b/postgis/sqlmm.sql.in.c
@@ -313,6 +313,31 @@ CREATE OR REPLACE FUNCTION SE_LocateAlong(geometry, float8)
 	AS $$ SELECT SE_LocateBetween($1, $2, $2) $$
 	LANGUAGE 'sql' IMMUTABLE STRICT;
 
+---
+-- Linear referencing functions (move to postgis.sql.in.c?)
+---
+CREATE OR REPLACE FUNCTION ST_LocateBetween(geometry, float8, float8)
+	RETURNS geometry
+	AS 'MODULE_PATHNAME', 'LWGEOM_locate_between_m'
+	LANGUAGE 'C' IMMUTABLE STRICT;
+	
+CREATE OR REPLACE FUNCTION ST_LocateAlong(geometry, float8)
+	RETURNS geometry
+	AS $$ SELECT SE_LocateBetween($1, $2, $2) $$
+	LANGUAGE 'sql' IMMUTABLE STRICT;
+
+-- LRS with offset parameter
+CREATE OR REPLACE FUNCTION ST_LocateBetween(geometry, float8, float8, float8)
+	RETURNS geometry
+	AS 'MODULE_PATHNAME', 'LWGEOM_locate_between_m'
+	LANGUAGE 'C' IMMUTABLE STRICT;
+	
+-- LRS with offset parameter
+CREATE OR REPLACE FUNCTION ST_LocateAlong(geometry, float8, float8)
+	RETURNS geometry
+	AS $$ SELECT SE_LocateBetween($1, $2, $2) $$
+	LANGUAGE 'sql' IMMUTABLE STRICT;
+
 
 
 -------------------------------------------------------------------------------
diff --git a/postgis/uninstall_sqlmm.sql.in.c b/postgis/uninstall_sqlmm.sql.in.c
index c3044ccd8..40523da27 100644
--- a/postgis/uninstall_sqlmm.sql.in.c
+++ b/postgis/uninstall_sqlmm.sql.in.c
@@ -63,6 +63,15 @@ DROP FUNCTION SE_EnvelopesIntersect(geometry,geometry);
 DROP FUNCTION SE_LocateAlong(geometry, float8);
 DROP FUNCTION SE_LocateBetween(geometry, float8, float8);
 
+-------------------------------------------------------------------------------
+-- SQL/MM LRS functions
+-------------------------------------------------------------------------------
+
+DROP FUNCTION ST_LocateBetween(geometry, float8, float8);
+DROP FUNCTION ST_LocateAlong(geometry, float8);
+DROP FUNCTION ST_LocateBetween(geometry, float8, float8, float8);
+DROP FUNCTION ST_LocateAlong(geometry, float8, float8);
+
 -------------------------------------------------------------------------------
 -- END
 -------------------------------------------------------------------------------