Queries involving name, guid, classification fail for IFC4

[hlg]

When running queries that involve name, guid, or classification on IFC4 models, they fail with the following exception:

Caused by: java.lang.UnsupportedOperationException: null
        at org.bimserver.database.queries.QueryNamesAndTypesStackFrame.getOidOfGuidAlternative(QueryNamesAndTypesStackFrame.java:95)
        at org.bimserver.database.queries.QueryNamesAndTypesStackFrame.<init>(QueryNamesAndTypesStackFrame.java:60)
        at org.bimserver.database.queries.QueryPartStackFrame.process(QueryPartStackFrame.java:124)
        at org.bimserver.database.queries.QueryObjectProvider.next(QueryObjectProvider.java:143)
        ... 33 common frames omitted

This failure is due to the missing singleindex annotation of the queried attributes. These annotations are added to the respective IFC2x3 elements in migrations Step0022.java and Step0027.java. For IFC4 similar annotations would be necessary. Be aware that for IfcClassificationReference the attribute ItemReference was renamed to Identifier in IFC4. This can be accessed for both schemas through its position, see also f6c0182.

[rubendel]

Thanks for the clear report! Has been fixed in 2e4c74c. There are probably more places where IFC4 support lacks, keep em coming @hlg :)

[hlg]

Tested for name and classification queries as well.