Improved logging configuration.

This configuration will log esg.search events to a separate file "esg-search.log".
It will also include the timestamp of each log entry which makes it much more useful.

src/java/main/log4j.xml

@@ -28,8 +28,15 @@
  </layout>
  </appender>
 
+ <appender name="search_log" class="org.apache.log4j.RollingFileAppender">
+ <param name="File" value="${catalina.base}/logs/esgf-search.log"/>
+ <layout class="org.apache.log4j.PatternLayout">
+ <!-- TODO: add datetime? -->
+ <param name="conversionPattern" value="%d [%p] %C: %m %n"/>
+ </layout>
+ </appender>
  <logger name="esg" additivity="false">
- <level value="DEBUG" />
+ <level value="INFO" />
  <appender-ref ref="stdout" />
  </logger>
 
@@ -40,7 +47,12 @@
 
  <logger name="org.apache.solr" additivity="false">
  <level value="INFO" />
- <appender-ref ref="stdout" />
+ <appender-ref ref="search_log" />
  </logger>
+ <logger name="esg.search" addiitivity="false">
+ <level value="INFO" />
+ <appender-ref ref="search_log" />
+ </logger>
+
 
 </log4j:configuration>