On Sep 21, 2008, at 8:11 PM, Adam Woods wrote:
Can anybody help me with this issue?
Is this a feature which was missed or is planned for a later release?
Your help is greatly appreciated.
Cheers,
Adam Woods
-----Original Message-----
From: Adam Woods [mailto:[EMAIL PROTECTED]
Sent: Wednesday, 17 September 2008 10:18 AM
To: log4cxx-user@logging.apache.org
Subject: Accessing a LoggingEvent's properties using a PatternLayout
Hello List,
I am trying to make use of the LoggingEvent's properties map so that
my
logs contain extra data specific to an event. This is implemented in
log4net, so I didn't think I would run into any problems.
However, on further investigation, the documentation and the code both
suggest that there is no way to actually access the LoggingEvent's
properties using the PatternLayout's syntax.
Are the LoggingEvent's properties intended for this kind of use, or
am I
going about this the wrong way?
Cheers,
Adam Woods
The nomenclature gets a little muddied. In log4j 1.2, there were no
properties just the NDC (nested diagnostic context) and MDC (mapped
diagnostic context) which were a thread-local stack and map,
respectively. In the log4j 1.3 development (since abandoned), the
term MDC was changed to Properties in some places, but there was not a
separation between the concepts . log4cxx inherited from log4j 1.3
but appears to have separated MDC from Properties, though there is no
distinct API for injecting or using properties. It does appear that
MDC works in the same manner as log4j 1.2, but "properties" appear to
be a non-functioning stub.
I'm not an log4net expert, but it didn't seem to have a distinct
properties API vs an MDC API. It just seems that MDC values are
stored in a member called Properties.
What were you trying to do and what didn't appear to work in log4cxx
that did work in log4net?
