Logs
----

For the ``METS-R SIM``, the main logger is initialized in
ContextCreator.java. Log messages are written to both stdout and a log
file named ``mets_r.log``.

Logging levels in increasing order of severity are given below.

-  ``ALL``: All levels including custom levels.
-  ``DEBUG``: Designates fine-grained informational events that are most
   useful to debug an application.
-  ``INFO``: Designates informational messages that highlight the
   progress of the application at a coarse-grained level.
-  ``WARN``: Designates potentially harmful situations.
-  ``ERROR``: Designates error events that might still allow the
   application to continue running.
-  ``FATAL``: Designates very severe error events that will presumably
   lead the application to abort.
-  ``OFF``: The highest possible rank and is intended to turn off
   logging.

Desired levels can be set in log4j.properties file located in the root
directory.

::

   log4j.logger.mets_r.ContextCreator=INFO, mets_r, stdout