Re: How to check for null values when using proxies?

[Armin Waibel]

Armin Waibel wrote:

In the 1:n associations I set auto-retrieve="false"
and proxy="dynamic". As my classes do not implement interfaces, I'm using
CGLib as ProxyFactoryClass.


Now I get your point. You are using dynamic proxies for the referenced 
objects (and maybe a proxy reference for the 1:n relation too) and OJB 
return the wrong instance for all subclasses.


Another problem that came up after I started using proxies is in the
hierarchy mapping. I'm using just one table to map my class hierarchy. 
So,
this table has a CLASSNAME field to identify which class to load. In the
constructor of my base class I have a
setOjbConcreteClass(this.getClass().getName()) call. Before using 
proxies,
the class name was configured correctly. But after, instead of having the
real object class name, the application configures the classname field 
using
the proxy class name.

I assume there should be something wrong with my mapping files or some 
other
point in my application. As said earlier, I believe proxies should be
transparent. Did someone here experience the same problems?

Hm, I will have a look at this tomorrow (will try to reproduce your issue).

I can reproduce the issue and create a bug report:
http://issues.apache.org/jira/browse/OJB-138

Setup some new tests and it seems that I can fix it soon.


regards,
Armin

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