One thing you can do today is to merge a properties file into System.properties. A
nicer solution is for the DOMConfigurator do read a properties file passed as argument
to log4j:configuration. I'll add it to the todo list. Ceki
At 14:08 16.03.2001 -0500, you wrote:
>This looks great, but ... :-) can I do something similar with a DOMConfigurator?
>I looked, but I did not see a way to define a custom property with a log4j.dtd
>XML file and the DOMConfigurator. I would really like to be able to do the exact
>same thing within a log4j xml file. The DOMConfigurator calls an internal a
>subst function that uses OptionConverter.substVars with a data member props. But
>props looks like it will always be null (it is never set at least that I could
>see) so only the System properties are used. This means, I can still use a
>custom property, message.ConversionPattern, when defining a layout's conversion
>pattern as in
>
><layout class="org.apache.log4j.PatternLayout">
> <param name="ConversionPattern"
> value="${message.ConversionPattern}" />
></layout>
>
>but I have to externally add the property "message.ConversionPattern" to the
>System properties. Is there a better way to do this? (I am using 1.1b1 and am a
>log4j newbie, so my apologies if this is a dumb question.)
>
>Ideally, I think it would be nice to extend the dtd so that the
>log4j:configuration element takes zero or more param elements. The
>DOMConfigurator can add all the params to its internal props Properties data
>member and then one could define any custom properties with
>
><log4j:configuration>
> <param name="message.ConversionPattern"
> value= "%t %-5p %c{2} - %m%n" />
>
>... rest of config.xml can now use ${message.ConversionPattern}
>
>without needing a second properties file. Does this make sense to fold into
>DOMConfigurator?
>
>Thanks for your help and for making log4j available.
>
>Phil
>
>Ceki Gülcü wrote:
>
>> How about:
>>
>> configDir = /usr/local/my_project/prod/logs
>>
>> log4j.category.my_category=INFO, MY_Appender1, MY_Appender2, MY_Appender3,
>> MY_Appender4, MY_Appender5, MY_Appender6, MY_Appender7
>> ...
>> log4j.appender.MY_Appender1.File=${configDir}/trace1.log
>> ...
>> log4j.appender.MY_Appender2.File=${configDir}/trace2.log
>> ...
>> log4j.appender.MY_Appender3.File=${configDir}/trace3.log
>> ...
>> log4j.appender.MY_Appender4.File=${configDir}/trace4.log
>> ...
>> log4j.appender.MY_Appender5.File=${configDir}/trace5.log
>> ...
>> log4j.appender.MY_Appender6.File=${configDir}/trace6.log
>> ...
>> log4j.appender.MY_Appender7.File=${configDir}/trace7.log
>>
>> Log4j supports variable substitution in config files. Hope this helps. Ceki
>>
>> At 15:34 14.03.2001 -0800, Greg Knight wrote:
>> >Hello,
>> >
>> >I am playing with Log4J using both FileAppender and RollingFileAppender. In
>> >defining the appenders (via a config file), I have a line similiar to:
>> >
>> >log4j.appender.MY_Appender1.File=trace.log
>> >
>> >My question is how do I make path to trace.log relative? The path will
>> >change based on the environment in which the code executes. For example, the
>> >fulll path in development might be c:\my_project\dev\logs\trace.log. In QA
>> >the path might be /usr/local/my_project/qa/logs/trace.log. In production it
>> >might be /usr/local/my_project/prod/logs/trace.log.
>> >
>> >While it is not that difficult to just change the config file, I would
>> >rather not have to put the full path in the config file for each file
>> >appender. The problem exacerbates when I have numerous file appenders
>> >declared in the config file. Each one would need to be different depending
>> >on which environment the code is hosted. Additionally, if I share the config
>> >file with other developers on the project, they will have to modify each
>> >file appender in the config file if their directory structure is different.
>> >
>> >What I would really like to do is following:
>> >
>> >/********************** config file ********************************/
>> >configDir = /usr/local/my_project/prod/logs/
>> >
>> >log4j.category.my_category=INFO, MY_Appender1, MY_Appender2, MY_Appender3,
>> >MY_Appender4, MY_Appender5, MY_Appender6, MY_Appender7
>> >...
>> >log4j.appender.MY_Appender1.File=trace1.log
>> >...
>> >log4j.appender.MY_Appender2.File=trace2.log
>> >...
>> >log4j.appender.MY_Appender3.File=trace3.log
>> >...
>> >log4j.appender.MY_Appender4.File=trace4.log
>> >...
>> >log4j.appender.MY_Appender5.File=trace5.log
>> >...
>> >log4j.appender.MY_Appender6.File=trace6.log
>> >...
>> >log4j.appender.MY_Appender7.File=trace7.log
>> >
>> >// other stuff
>> >
>> >/************** end of config file *****************************/
>> >
>> >/************ Java code *************************************/
>> >
>> >PropertyConfigurator.configure("config");
>> >Enumeration appenders = cat.getAllAppenders();
>> >while (appenders.hasMoreElements())
>> >{
>> > Appender = (Appender) appenders.nextElement();
>> > if (Appender instanceOf FileAppender)
>> > {
>> > FileAppender fa = (FileAppender) Appender;
>> > fa.setPath(props.getProperty("configDir"); //
>> >how do I do this
>> > }
>> >}
>> >
>> >Thanx,
>> >GK
>> >
>> >---------------------------------------------------------------------
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>>
>> I hope to see you at my ApacheCon 2001 presentation
>> entitled "Log4j, A Logging Package for Java".
>>
>> See http://ApacheCon.Com/2001/US/ for more details.
>>
>> ----
>> Ceki Gülcü Web: http://qos.ch
>> av. de Rumine 5 email: [EMAIL PROTECTED] (preferred)
>> CH-1005 Lausanne [EMAIL PROTECTED]
>> Switzerland Tel: ++41 21 351 23 15
>>
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>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: [EMAIL PROTECTED]
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I hope to see you at my ApacheCon 2001 presentation
entitled "Log4j, A Logging Package for Java".
See http://ApacheCon.Com/2001/US/ for more details.
----
Ceki Gülcü Web: http://qos.ch
av. de Rumine 5 email: [EMAIL PROTECTED] (preferred)
CH-1005 Lausanne [EMAIL PROTECTED]
Switzerland Tel: ++41 21 351 23 15
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