userdefuned about ids

[berlotti]

We are trying to move away from user-defined types (and in IFC 5 even from predefined-types).
Best practise is to use/add a classificationreference to the IFC class to further specify it.
The best-practise guidelines for IDS might change in 1.1 to reflect this movement.

[CBenghi]

Quite right, I'll address that, apologies.

[enzoaggazioALMA]

The ids file in test case is probably wrong, the tag:

<predefinedType>
           <simpleValue>USERDEFINED</simpleValue>
</predefinedType>

must be replaced with:

<predefinedType>
           <simpleValue>WALDO</simpleValue>
</predefinedType>

[andyward]

The ids file in test case is probably wrong, the tag:

<predefinedType>
           <simpleValue>USERDEFINED</simpleValue>
</predefinedType>

must be replaced with:

<predefinedType>
           <simpleValue>WALDO</simpleValue>
</predefinedType>

I think the test is right. What's the requirement is trying to test is that the entities have a PreDefinedType of USERDEFINED - but we don't want to check the specific user-defined type provided in ObjectType/ElementType etc.

i.e. we're checking for .USERDEFINED. not WALDO

There are separate test cases that test for checking specific User Defined Type values etc. e.g. pass-a_predefined_type_may_specify_a_user_defined_object_type.ids and fail-user_defined_types_are_checked_case_sensitively.ids

[enzoaggazioALMA]

To check the predefined type attribute, we could test this way:

 <requirements>
        <attribute>
          <name>
            <simpleValue>PredefinedType</simpleValue>
          </name>
          <value>
            <simpleValue>WALDO</simpleValue>
          </value>
        </attribute>
      </requirements>

[andyward]

Best practise is to use/add a classificationreference to the IFC class to further specify it.
Agreed - When everything is classified that's where Classification Facets come in of course.

@enzoaggazioALMA

To check the predefined type attribute, we could test this way:
[using an attribute facet]
Presumably with :

...
<value>
   <simpleValue>UNDEFINED</simpleValue> <!-- rather than WALDO-->
</value>

While this may work, it's worth noting that I believe the Entity Predefined Type logic should check the DefiningType as well as the instance. So for instance in IFC2x3 an IFCWALL has no PredefinedType - it's on the IFCWALLTYPE. So you may get subtle differences accessing via Attribute facet