[slf4j-user] Question about strange Logback Logger implementation

[Ceki Gülcü]

Hi Pavel,

This is actually a bug in logback. It was fixed a few minutes ago. The 
corrected code is availale in logback version 0.9.5.

Thank you for your accurate description of the problem,


At 03:36 PM 4/2/2007, you wrote:
>Hi,
>
>I have question about ch.qos.logback.classic.Logger#isXXXEnable() methods 
>implementations, it seems that for FilterReply.NEUTRAL decision, it simply 
>always return false if effective level is above DEBUG level.
>
>public boolean isInfoEnabled() {
>     FilterReply decision = callTurboFilters(Level.INFO);
>     if (decision == FilterReply.NEUTRAL) {
>       return effectiveLevelInt <= Level.DEBUG_INT;   // always false, 
> same for isErrorEnabled()
>     } else if (decision == FilterReply.DENY) {
>       return false;
>     } else if (decision == FilterReply.ACCEPT) {
>       return true;
>     } else {
>       throw new IllegalStateException("Unknown FilterReply value: " + 
> decision);
>     }
>   }
>
>This implementations causes, that configuration below do not print INFO 
>messages:
>
><configuration>
>
>     <!--====================================================================
>       appenders
>     =====================================================================-->
>
>     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
>         <layout class="ch.qos.logback.classic.PatternLayout">
>             <Pattern>%d{HH:mm:ss.SSS} - [%thread] [%c:%line] %-5level - 
> %msg %n</Pattern>
>         </layout>
>     </appender>
>
>     <!--====================================================================
>       loggers
>     =====================================================================-->
>
>     <logger name="org.apache">
>         <level value="INFO"/>
>     </logger>
>
>     <logger name="org.springframework">
>         <level value="INFO"/>
>     </logger>
>
>     <!--====================================================================
>       root logger
>     =====================================================================-->
>
>     <root>
>         <level value="INFO" />
>         <appender-ref ref="STDOUT"/>
>     </root>
>
></configuration>
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-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch