PostGIS  2.2.7dev-r@@SVN_REVISION@@
Datum pgis_geometry_polygonize_finalfn ( PG_FUNCTION_ARGS  )

Definition at line 266 of file lwgeom_accum.c.

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

267 {
268  pgis_abs *p;
269  Datum result = 0;
270  Datum geometry_array = 0;
271 
272  if (PG_ARGISNULL(0))
273  PG_RETURN_NULL(); /* returns null iff no input values */
274 
275  p = (pgis_abs*) PG_GETARG_POINTER(0);
276 
277  geometry_array = pgis_accum_finalfn(p, CurrentMemoryContext, fcinfo);
278  result = PGISDirectFunctionCall1( polygonize_garray, geometry_array );
279  if (!result)
280  PG_RETURN_NULL();
281 
282  PG_RETURN_DATUM(result);
283 }
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:168
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:370
To pass the internal ArrayBuildState pointer between the transfn and finalfn we need to wrap it into ...
Definition: lwgeom_accum.c:69
Datum polygonize_garray(PG_FUNCTION_ARGS)

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