[site cubicweb] Add more postgis functions, closes #3390052

Add functions for distance computation and point creation

site_cubicweb.py

@@ -126,6 +126,20 @@ class ST_LENGTH(FunctionDescr):
     rtype = 'Float'
 
 
+class ST_DISTANCE(FunctionDescr):
+    minargs = 2
+    maxargs = 2
+    supported_backends = ('postgres',)
+    rtype = 'Float'
+
+
+class ST_DISTANCE_SPHERE(FunctionDescr):
+    minargs = 2
+    maxargs = 2
+    supported_backends = ('postgres',)
+    rtype = 'Float'
+
+
 class ST_AREA(FunctionDescr):
     minargs = 1
     maxargs = 1
@@ -177,6 +191,20 @@ class DISPLAY(FunctionDescr):
         return 'ST_ASGeoJSON(ST_Transform(%s, %s)' % (args[0], args[1])
 
 
+class ST_MAKEPOINT(FunctionDescr):
+    minargs = 2
+    maxargs = 2
+    supported_backends = ('postgres',)
+    rtype = 'Geometry'
+
+
+class ST_SETSRID(FunctionDescr):
+    minargs = 2
+    maxargs = 2
+    supported_backends = ('postgres',)
+    rtype = 'Geometry'
+
+
 register_function(ST_EQUALS)
 register_function(ST_INTERSECTS)
 register_function(ST_INTERSECTION)
@@ -188,6 +216,7 @@ register_function(ST_WITHIN)
 register_function(ST_CONTAINS)
 register_function(ST_DWITHIN)
 register_function(ST_LENGTH)
+register_function(ST_DISTANCE)
 register_function(ST_AREA)
 register_function(ST_NUMINTERIORRINGS)
 register_function(ST_SIMPLIFY)
@@ -195,3 +224,6 @@ register_function(ST_TRANSFORM)
 register_function(DISPLAY)
 register_function(ST_ASGEOJSON)
 register_function(ST_UNION)
+register_function(ST_MAKEPOINT)
+register_function(ST_SETSRID)
+register_function(ST_DISTANCE_SPHERE)