> String JNDI_FACTORY = "com.sun.jndi.fscontext.RefFSContextFactory";
> FBWrappingDataSource dbDataSource = null;
>
> Properties props = new Properties();
> props.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);

Add also this:

props.put(Context.OBJECT_FACTORIES,
FBWrappingDataSource.class.getName());

But I found some bugs in FBWrappingDataSource
referencing/dereferencing, so you have to get CVS copy of JayBird.

We will release beta 2 soon, I believe that we need to release betas
quickly, so you have always a most current version.

> context = new InitialContext(props);

Best regards,
Roman Rokytskyy