[jboss-user] [JBoss Seam] - Re: Issues moving from Seam 1.1.0 to Seam 1.1.5

norman.richards@jboss.com do-not-reply at jboss.com
Wed Feb 7 17:03:26 EST 2007

Ok, let's take a step back.  You are making a big deal out of a misunderstanding of what seam is doing combined with a bug in seam.

Seam log messages are structured messages.  You can:

1 - log contextual state using expressions, without needing to inject values and invoke methods. 
2 - log formatted data easily
3 - eliminate overhead from message creation (string buffer builders, etc...) when the message is not logged - without needing to uglify your code with isLogged() tests.

For that you only have pay one small price - your log messages need to be a format string, like a printf. You wouldn't printf("this is the message " + someOtherData), would you?  You would printf("this is the message %s", someOtherData) because if someOtherData had format codes, it would get messed up.  

That's all that is happening here.  You are using a raw text string as a message string.  If you want to log a raw string, call log("#0", yourRawTextString).  There's no magic here.  There's nothing scandalous or shocking here.  It's simply a format string.

You happened to not run into this before because of a bug in Seam 1.1 that didn't interpolate correctly when no parameters were passed in.   This happened to be magnified by a recent change I made that caused an exception to be thrown when called with a bad format string.   I fixed that issue so that it won't complain loudly when the user has an error in his format string.

I really don't know what to say.  If you'd like a logging method that doesn't use a format string, open a JIRA issue.  I don't think I see a need to explode the API further, but its worth consideration.

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