PostGIS  2.3.7dev-r@@SVN_REVISION@@
Datum pgis_geometry_makeline_finalfn ( PG_FUNCTION_ARGS  )

Definition at line 305 of file lwgeom_accum.c.

References LWGEOM_makeline_garray(), pgis_accum_finalfn(), and PGISDirectFunctionCall1().

306 {
307  pgis_abs *p;
308  Datum result = 0;
309  Datum geometry_array = 0;
310 
311  if (PG_ARGISNULL(0))
312  PG_RETURN_NULL(); /* returns null iff no input values */
313 
314  p = (pgis_abs*) PG_GETARG_POINTER(0);
315 
316  geometry_array = pgis_accum_finalfn(p, CurrentMemoryContext, fcinfo);
317  result = PGISDirectFunctionCall1( LWGEOM_makeline_garray, geometry_array );
318  if (!result)
319  PG_RETURN_NULL();
320 
321  PG_RETURN_DATUM(result);
322 }
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_makeline_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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