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Centralized Exception handling for Eclipse plug-in [message #500221]

Wed, 25 November 2009 12:41

Svilen Genchev

Messages: 8
Registered: November 2009

Junior Member

Hello,

At first I thought this would be question often asked, however trying (and failing) to look up info on this proved me wrong.

Is there a mechanism in Eclipse platform for centralized exception handling of exceptions?

For example... You have plug-in project which connects to a DB and issues queries, results of which are used to populate some e.g. views. This is like the most common example ever. Smile

Queries are executed almost for any user action, from every UI control the plug-in provides. Most likely the DB Query API will have some specific to the DB SomeDBGeneralException declared as being thrown by it. That's OK, you can handle those according to whatever your software design is. But how about unchecked exceptions which are likely to occur, e.g. , when communication with DB suddenly breaks for some network related reason? What if in such case one would like to catch those exceptions in a central place and for example provide user friendly message to the user (rather than the low level communication protocol api messages) and even some possible actions the user could execute in order to deal with the specific problem?

Thinking in Eclipse platform context, the question may be rephrased as "Is there an extension point like "org.eclipse.ExceptionHandler" which allows to declare exception handlers for specific (some kind of filtering support) exceptions giving a lot of flexibility with the actual handling?"

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Re: Centralized Exception handling for Eclipse plug-in [message #505522 is a reply to message #500221]

Thu, 31 December 2009 17:41

Benjamin Leipold

Messages: 13
Registered: July 2009

Junior Member

I had a similar problem some time ago with centralized handling of job status. I registered my own status handler via org.eclipse.ui.statusHandlers extension point ( http://help.eclipse.org/galileo/topic/org.eclipse.platform.d oc.isv/guide/ua_statushandling_defining.htm). Maybe you can convert your exceptions to IStatus object and let your own status handler process those status.

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