Need a loginTest() method added to ServiceFactory

[bwzloranger]

The current problem is this: Once you have created a connection to the service factory, the only way to find out if your connection URL is correct is by doing something like this:

exp = iQuery.findByString(Experimenter.class, "omeName", username);

which returns a reflected undeclairedThrowableException like this:

java.lang.reflect.UndeclaredThrowableException
Caused by: javax.naming.CommunicationException: 

My current work around is to catch all errors and look for:

e.getCause() instanceof communicationException

...but this is messy. What I would really like is to have a method like loginTest() which can throw a communicationException correctly.

[jmoore]

This stems mostly from the fact that the JavaEE security mechanism doesn't allow me to do ANYTHING, without a proper login (well, as we're currently using it). The upcoming OmeroSessions bits will allow something like this. Basically the method signature will be:

  Session connection.createSession(String name, String password)
    throws AuthenticationException, CommunicationException;

The ServiceFactory will call this for you automatically, but if you'd rather check the exceptions, you can force the call with a createSession() call.

[bwzloranger]

All good.. thanks Josh :)

[jmoore]

Merged into #864