Absolutely no need to apologize, I just wanted to point you to the tickets on the topic - including the ongoing discussion.

I was in a bit of a hurry (on the way to work) so my answer was a little short ;)

Those topics reappear every few weeks and I really think that this should be added to SLF4J.

While ticket 70 can (and should) be fixed without implementing ticket 31, both should be addressed at some point.

Regards,
Joern.

On 24.06.2009, at 08:45, Chad La Joie <chad.laj...@switch.ch> wrote:

Sorry, I missed #70 when looking through the bug DB. I did see #31 but the use of varargs isn't what I was after.

Joern Huxhorn wrote:
+1 from me, the relevant bugs are
http://bugzilla.slf4j.org/show_bug.cgi?id=70
and
http://bugzilla.slf4j.org/show_bug.cgi?id=31
Regards,
Joern.
On 24.06.2009, at 07:41, Chad La Joie wrote:
The current API does not let you use the message formatting functionality in conjunction with Throwable arguments. I've seen discussion that the reason for this is that if you're dealing with an exception the overhead is already so high that the performance benefit of using the format string to defer final message constructions is meaningless.

However, I'd like to propose that readability might be another reason for allowing this. Take for example this message:

log.error("Some bad thing happened because request with ID '" + id + "' from requester '" + requesterId + "' did not meet security requirement '" + secPolId + "'", e)

I would argue that the following is much more readable:

log.error("Some bad thing happened because request with ID '{}' from requester '{}' did not meet security requirement '{}'", new Object[] {id, requesterId, secPolId}, e)

This would require adding a new method for each log level with the arguments; format, argArray, throwable.

Does this seem like a reasonable addition to the API strictly from a readability aspect within the code using SLF4J?

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Chad La Joie, Software Engineer, Net Services
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phone +41 44 268 15 75, fax +41 44 268 15 68
chad.laj...@switch.ch, http://www.switch.ch

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SWITCH
Serving Swiss Universities
--------------------------
Chad La Joie, Software Engineer, Net Services
Werdstrasse 2, P.O. Box, 8021 Zürich, Switzerland
phone +41 44 268 15 75, fax +41 44 268 15 68
chad.laj...@switch.ch, http://www.switch.ch

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