Re: [mdr-users] Clustering the UML for Traceability

Hi Pieter,

Pieter Van Gorp wrote:

>I have a test in which I create a trace between two UML attributes. 
>I'm not sure if I'm using the NB/JMI API right when creating the
>clustering extent: I create a new extent and pass an array of size one
>in which the UML application model is stored.  When serializing the
>trace extent to XMI, no problems are reported but the references to
>the UML attributes are in fact dangling IDREFs instead of HREFs to the
>original UML-XMI file.
>  
>
MDR writer will never generate hrefs - you have to either serialize 
everything into a single file, or you can create your own implementation 
of XMIReferenceProvider to teach XMI writer to create hrefs.

>Even worse, I get a classcastexception when trying to create a new
>trace extent to test whether the XMI for the traceability model
>contains the required information:
>org.netbeans.api.mdr.CreationFailedException: Cannot instantiate
>package because of unexpected exception: java.lang.ClassCastException
>        at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:472)
>        at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:292)
>        at be.ac.ua.fots.motmot.prototypes.crossreferences.TestMDR.testReadTraceBetweenUmlAttributes(TestMDR.java:176)
>  
>
what version of MDR are you using? I've tried to look at the lines from 
your stacktrace, but e.g. line number 292 in NBMDRepositoryImpl contains 
javadoc, so I guess you are using a different version.
Martin