PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ pgis_geometry_collect_finalfn()

Datum pgis_geometry_collect_finalfn ( PG_FUNCTION_ARGS  )

Definition at line 254 of file lwgeom_accum.c.

References LWGEOM_collect_garray(), PG_FUNCTION_INFO_V1(), pgis_accum_finalfn(), pgis_geometry_polygonize_finalfn(), and PGISDirectFunctionCall1().

Referenced by pgis_geometry_union_finalfn().

255 {
256  pgis_abs *p;
257  Datum result = 0;
258  Datum geometry_array = 0;
259 
260  if (PG_ARGISNULL(0))
261  PG_RETURN_NULL(); /* returns null iff no input values */
262 
263  p = (pgis_abs*) PG_GETARG_POINTER(0);
264 
265  geometry_array = pgis_accum_finalfn(p, CurrentMemoryContext, fcinfo);
266  result = PGISDirectFunctionCall1( LWGEOM_collect_garray, geometry_array );
267  if (!result)
268  PG_RETURN_NULL();
269 
270  PG_RETURN_DATUM(result);
271 }
Datum pgis_accum_finalfn(pgis_abs *p, MemoryContext mctx, FunctionCallInfo fcinfo)
The final function rescues the built array from the side memory context using the PostgreSQL built-in...
Definition: lwgeom_accum.c:182
Datum LWGEOM_collect_garray(PG_FUNCTION_ARGS)
Datum PGISDirectFunctionCall1(PGFunction func, Datum arg1)
A modified version of PostgreSQL's DirectFunctionCall1 which allows NULL results; this is required fo...
Definition: lwgeom_accum.c:384
To pass the internal ArrayBuildState pointer between the transfn and finalfn we need to wrap it into ...
Definition: lwgeom_accum.c:83
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