declaration property

src/ifcopenshell-python/ifcopenshell/entity_instance.py

@@ -223,9 +223,7 @@ class entity_instance_mixin:
 
         :return: True if the instance is an entity
         """
-        schema_name = self.is_a(True).split(".")[0]
-        decl = ifcopenshell_wrapper.schema_by_name(schema_name).declaration_by_name(self.is_a())
-        return isinstance(decl, ifcopenshell_wrapper.entity)
+        return isinstance(self.declaration, ifcopenshell_wrapper.entity)
 
     def compare(self, other, op, reverse=False):
         """Compares with another instance.

src/ifcwrap/IfcParseWrapper.i

@@ -884,6 +884,7 @@ private:
 
 	%pythoncode %{
 		file = property(file_py)
+		declaration = property(declaration)
 	%}
 }
 

src/ifcwrap/utils/typemaps_out.i

@@ -6,6 +6,10 @@
 	$result = SWIG_NewPointerObj(SWIG_as_voidptr($1), declaration_type_to_swig($1), 0);
 }
 
+%typemap(out) const IfcParse::declaration& {
+	$result = SWIG_NewPointerObj(SWIG_as_voidptr($1), declaration_type_to_swig($1), 0);
+}
+
 %typemap(out) IfcParse::parameter_type* {
 	if ($1->as_named_type()) {
 		$result = SWIG_NewPointerObj(SWIG_as_voidptr($1->as_named_type()), SWIGTYPE_p_IfcParse__named_type, 0);