At 09:41 PM 10/19/2005, Jacob Kjome wrote:
No, I'm talking about running LogWeb against Log4j-1.3 at runtime, not
compiling
LogWeb against 1.3. LogWeb was compiled against 1.2.xx and run against 1.3.
I'm not saying this is the end-all-be-all test of runtime compatibility,
but it
does seem to work against an application, LogWeb, that hits a lot of Log4j's
api.
I suggest you either wait for Mark to cut a new alpha (I think he said he was
going to do it tonight or, at least, very soon) or build it yourself and
verify
whether my statements are correct.
Jacob,
Just to let you know that running tests against Mark's 1.3alpha-7 release
fail exactly in the same way as 1.3alpha6 did previously. To try out this
for your self, you can download SLF4J 1.0RC1 and place log4j-1.3alpha7.jar
under $SLF4J_HOME/lib/. You should also place log4j-1.2.9.jar under
$SLF4J_HOME/lib/.
Alternatively, you can check out
from 'http://svn.slf4j.org/repos/slf4j/trunk'
Here are the set of command you can run:
# cd some_directory
# svn co http://svn.slf4j.org/repos/slf4j/trunk slf4j
# cd slf4j
# ant jar
# cd tests
# ant all (this runs all tests known to work correctly)
Running the following two tests will results in errors.
# ant CompatibilityA
this will fail with
[junit] Testcase: test1 took 0.07 sec
[junit] Caused an ERROR
[junit]
org.apache.log4j.Logger.log(Ljava/lang/String;Lorg/apache/log4j/Level;Ljava/lang/Object;Ljava/lang/Throwable;)V
[junit] java.lang.NoSuchMethodError:
org.apache.log4j.Logger.log(Ljava/lang/String;Lorg/apache/log4j/Level;Ljava/lang/Object;Ljava/lang/Throwable;)V
[junit] at
org.slf4j.impl.Log4jLoggerAdapter.debug(Log4jLoggerAdapter.java:84)
[junit] at org.slf4j.InvokingSLF4J.test1(InvokingSLF4J.java:67)
# ant CompatibilityB
[junit] Testcase: test1 took 0.07 sec
[junit] Caused an ERROR
[junit] (class: org/slf4j/impl/Log4jLoggerAdapter, method:
isErrorEnabled signature: ()Z) Incompatible argument to function
[junit] java.lang.VerifyError: (class:
org/slf4j/impl/Log4jLoggerAdapter, method: isErrorEnabled signature: ()Z)
Incompatible argument to function
[junit] at
org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:65)
[junit] at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:87)
[junit] at org.slf4j.InvokingSLF4J.test1(InvokingSLF4J.java:66)
Tests CompatibilityA and CompatibilityB check whether slf4j-log4j13.jar
compiled against 1.3 can run against log4j 1.2 and respectively
slf4j-log4j12.jar compiled against 1.2 can run against log4j 1.3. In both
cases and as far as my tests attest, the answer seems to be negative.
I hope this helps,
Jake
--
Ceki Gülcü
The complete log4j manual: http://www.qos.ch/log4j/
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