PostGIS  3.0.0dev-r@@SVN_REVISION@@

◆ pgis_geometry_collect_finalfn()

Datum pgis_geometry_collect_finalfn ( PG_FUNCTION_ARGS  )

Definition at line 256 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().

257 {
258  pgis_abs *p;
259  Datum result = 0;
260  Datum geometry_array = 0;
261 
262  if (PG_ARGISNULL(0))
263  PG_RETURN_NULL(); /* returns null iff no input values */
264 
265  p = (pgis_abs*) PG_GETARG_POINTER(0);
266 
267  geometry_array = pgis_accum_finalfn(p, CurrentMemoryContext, fcinfo);
268  result = PGISDirectFunctionCall1( LWGEOM_collect_garray, geometry_array );
269  if (!result)
270  PG_RETURN_NULL();
271 
272  PG_RETURN_DATUM(result);
273 }
Datum pgis_accum_finalfn(pgis_abs *p, MemoryContext mctx, FunctionCallInfo fcinfo)
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:386
To pass the internal ArrayBuildState pointer between the transfn and finalfn we need to wrap it into ...
Definition: lwgeom_accum.c:107
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