http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Fri, 24 May 2013 15:04:44 -0400 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 Exception handling could be a lot simpler with a few rules like the following

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  1. If the exceptions are recoverable use checked exceptions
  
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  2. If they are not recoverable use exception classes that extend from...]]> Mon, 20 Feb 2006 18:55:35 -0500 Mon, 20 Feb 2006 18:55:35 -0500 Mon, 20 Feb 2006 18:55:35 -0500 Feb 20, 2006 Phillip Henry 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 In an good exception handling design what the client gets will always be generic exception and not the specific runtime exception that has occured.Yes you are right. But I was referring to messages displayed to the user and not...]]> Tue, 08 Mar 2005 04:59:42 -0500 Tue, 08 Mar 2005 04:59:42 -0500 Tue, 08 Mar 2005 04:59:42 -0500 Mar 8, 2005 Anirban Ray 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  1. following the ejb spec and suggested pattern at the top of this thread so your method rolls back and throws an application exception.
  
  2. when you want the method to NOT abort the enclosing...]]> Sun, 23 Jan 2005 05:35:25 -0500 Sun, 23 Jan 2005 05:35:25 -0500 Sun, 23 Jan 2005 05:35:25 -0500 Jan 23, 2005 paul strachan 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  (ie tell the container on the...]]> Sun, 23 Jan 2005 05:09:00 -0500 Sun, 23 Jan 2005 05:09:00 -0500 Sun, 23 Jan 2005 05:09:00 -0500 Jan 23, 2005 paul strachan 1 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  In an good exception handling design what the client gets will always be generic exception and not the...]]> Tue, 18 Jan 2005 16:56:48 -0500 Tue, 18 Jan 2005 16:56:48 -0500 Tue, 18 Jan 2005 16:56:48 -0500 Jan 18, 2005 asdfgf asdfgf 1 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  1. If the exceptions are recoverable use checked exceptions
  2. If they are not recoverable use exception classes that extend from RuntimeException
  
  This fits...]]> Tue, 11 Jan 2005 02:29:46 -0500 Tue, 11 Jan 2005 02:29:46 -0500 Tue, 11 Jan 2005 02:29:46 -0500 Jan 11, 2005 Anirban Ray 3 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 You are going to have to handle rollbacks yourself. This means you need to get in the habit of writing code in your session facades (your topmost layer of code in your EJB container) that catches application exceptions, calls...]]> Sun, 09 Jan 2005 13:09:41 -0500 Sun, 09 Jan 2005 13:09:41 -0500 Sun, 09 Jan 2005 13:09:41 -0500 Jan 9, 2005 Mncedisi Kasper 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  Will the second call to withdraw amount less than...]]> Fri, 07 Jan 2005 14:39:13 -0500 Fri, 07 Jan 2005 14:39:13 -0500 Fri, 07 Jan 2005 14:39:13 -0500 Jan 7, 2005 asdfgf asdfgf 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  anyway, why not just use:
  
  try/catch(Exception)
  "
  
  I would vote for something like this on the client side.
  
  ...
  try {
   businessTier.purchaseTicket(...);
  } catch...]]> Fri, 07 Jan 2005 12:20:23 -0500 Fri, 07 Jan 2005 12:20:23 -0500 Fri, 07 Jan 2005 12:20:23 -0500 Jan 7, 2005 Todd Murray 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 After all, if there is a marshalling exception, the client will not be able to tell the user what the real error was anyway.
  This is a very good technical reason for catching any and all exceptions on the service side that I...]]> Fri, 07 Jan 2005 03:39:03 -0500 Fri, 07 Jan 2005 03:39:03 -0500 Fri, 07 Jan 2005 03:39:03 -0500 Jan 7, 2005 Justin Mahoney 1 http://www.theserverside.com/discussions/thread.tss?thread_id=30911
  What we've done is have EJB clients at a minimum use try/catch(Exception) to catch any possible...]]> Fri, 07 Jan 2005 03:24:25 -0500 Fri, 07 Jan 2005 03:24:25 -0500 Fri, 07 Jan 2005 03:24:25 -0500 Jan 7, 2005 Justin Mahoney 0 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 Why should the client even know that DAOExceptions exist? What if the backend business throws IOExceptions, SAXExceptions, YouNameItExceptions.
  Correct. The client may not even have access to the class file for the exception...]]> Fri, 07 Jan 2005 03:18:16 -0500 Fri, 07 Jan 2005 03:18:16 -0500 Fri, 07 Jan 2005 03:18:16 -0500 Jan 7, 2005 Reg Whitton 2 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 Thu, 06 Jan 2005 16:48:00 -0500 Thu, 06 Jan 2005 16:48:00 -0500 Thu, 06 Jan 2005 16:48:00 -0500 Jan 6, 2005 Todd Murray 4 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 Thu, 06 Jan 2005 11:35:33 -0500 Thu, 06 Jan 2005 11:35:33 -0500 Thu, 06 Jan 2005 11:35:33 -0500 Jan 6, 2005 Justin Mahoney 5 http://www.theserverside.com/discussions/thread.tss?thread_id=30911 Bobby Woolf: I think this is rather inconsistent, that system exceptions cause automatic rollback while application exceptions specifically do not. An exception has been thrown so should you really commit the transaction (which is the...]]> Wed, 05 Jan 2005 20:54:12 -0500 Wed, 05 Jan 2005 20:54:12 -0500 Wed, 05 Jan 2005 20:54:12 -0500 Jan 5, 2005 Michael Jouravlev 1