Re: [mdr-users] Re: Custom Implementation

Richard Ciglansky wrote:

> ludger goeke wrote:
>
>> Hi Martin,
>>
>> when I run
>> StructuralFeatureImpl sf=( StructuralFeatureImpl)port;
>>
>>  I still got a class cast exeception.
>>  Do you have an idea what else could be the fault.
>>  
>>
> Do you have a "PortImpl" class of your own ? It should extend 
> StructuralFeatureImpl.
> If you do not explicitly derive "Port" implementation from 
> "StructuralFeature" implementation, you cannot expect instance of Port 
> to be an instance of StructuralFeatueImpl automatically, since 
> interface inheritance and implementation inheritance are quite 
> different thing. If you can, try to insert code :

Not true. The MDR *should* try to use the StructuralFeatureImpl. The 
reason why it seems to not be used may be that - either 
StructuralFeatureImpl is not on the classpath of your application, or it 
is in a wrong package.

>
>>  I also got another problem.
>>  I try to run my application from the netbeans enviroment,
>>  but when i copied the jar-files of my interfaces into
>>  the  netbeans/lib/ext directory, I get following
>>  exception when I start netbeans again
>>     java.lang.NoClassDefFoundError: javax/jmi/reflect/RefPackage
>
It is because your interfaces are not loaded by the same classloader 
that loads jmi.jar. If you create a module that has your interfaces on 
the classpath and depends on javax.jmi.reflect/1 module, it should work.
Martin