<?xml version="1.0" encoding="UTF-8"?>
<!-- Authors: Chris Taylor, Ceki Gulcu. -->
<!-- Version: 1.2 -->
<!-- A configuration element consists of optional renderer
elements,appender elements, categories and an optional root
element. -->
<!ELEMENT log4j:configuration (renderer*, appender*, (category | logger)*, root?, categoryFactory?)>
<!-- The "threshold" attribute takes a level value such that all -->
<!-- logging statements with a level equal or below this value are -->
<!-- disabled. -->
<!-- Setting the "debug" enable the printing of internal log4j logging   -->
<!-- statements.                                                         -->
<!-- By default, debug attribute is "null", meaning that we not do touch -->
<!-- internal log4j logging settings. The "null" value for the threshold -->
<!-- attribute can be misleading. The threshold field of a repository	 -->
<!-- cannot be set to null. The "null" value for the threshold attribute -->
<!-- simply means don't touch the threshold field, the threshold field   -->
<!-- keeps its old value.                                                -->
<!ATTLIST log4j:configuration
	xmlns:log4j CDATA #FIXED "http://jakarta.apache.org/log4j/"
	threshold (all | debug | info | warn | error | fatal | off | null) "null"
	debug (true | false | null) "null"
>
<!-- renderer elements allow the user to customize the conversion of  -->
<!-- message objects to String.                                       -->
<!ELEMENT renderer EMPTY>
<!ATTLIST renderer
	renderedClass CDATA #REQUIRED
	renderingClass CDATA #REQUIRED
>
<!-- Appenders must have a name and a class. -->
<!-- Appenders may contain an error handler, a layout, optional parameters -->
<!-- and filters. They may also reference (or include) other appenders. -->
<!ELEMENT appender (errorHandler?, param*, layout?, filter*, appender-ref*)>
<!ATTLIST appender
	name ID #REQUIRED
	class CDATA #REQUIRED
>
<!ELEMENT layout (param*)>
<!ATTLIST layout
	class CDATA #REQUIRED
>
<!ELEMENT filter (param*)>
<!ATTLIST filter
	class CDATA #REQUIRED
>
<!-- ErrorHandlers can be of any class. They can admit any number of -->
<!-- parameters. -->
<!ELEMENT errorHandler (param*, root-ref?, logger-ref*, appender-ref?)>
<!ATTLIST errorHandler
	class CDATA #REQUIRED
>
<!ELEMENT root-ref EMPTY>
<!ELEMENT logger-ref EMPTY>
<!ATTLIST logger-ref
	ref IDREF #REQUIRED
>
<!ELEMENT param EMPTY>
<!ATTLIST param
	name CDATA #REQUIRED
	value CDATA #REQUIRED
>
<!-- The priority class is org.apache.log4j.Level by default -->
<!ELEMENT priority (param*)>
<!ATTLIST priority
	class CDATA #IMPLIED
	value CDATA #REQUIRED
>
<!-- The level class is org.apache.log4j.Level by default -->
<!ELEMENT level (param*)>
<!ATTLIST level
	class CDATA #IMPLIED
	value CDATA #REQUIRED
>
<!-- If no level element is specified, then the configurator MUST not -->
<!-- touch the level of the named category. -->
<!ELEMENT category (param*, (priority | level)?, appender-ref*)>
<!ATTLIST category
	class CDATA #IMPLIED
	name CDATA #REQUIRED
	additivity (true | false) "true"
>
<!-- If no level element is specified, then the configurator MUST not -->
<!-- touch the level of the named logger. -->
<!ELEMENT logger (level?, appender-ref*)>
<!ATTLIST logger
	name ID #REQUIRED
	additivity (true | false) "true"
>
<!ELEMENT categoryFactory (param*)>
<!ATTLIST categoryFactory
	class CDATA #REQUIRED
>
<!ELEMENT appender-ref EMPTY>
<!ATTLIST appender-ref
	ref IDREF #REQUIRED
>
<!-- If no priority element is specified, then the configurator MUST not -->
<!-- touch the priority of root. -->
<!-- The root category always exists and cannot be subclassed. -->
<!ELEMENT root (param*, (priority | level)?, appender-ref*)>
<!-- ==================================================================== -->
<!--                       A logging event                                -->
<!-- ==================================================================== -->
<!ELEMENT log4j:eventSet (log4j:event*)>
<!ATTLIST log4j:eventSet
	xmlns:log4j CDATA #FIXED "http://jakarta.apache.org/log4j/"
	version (1.1 | 1.2) "1.2"
	includesLocationInfo (true | false) "true"
>
<!ELEMENT log4j:event (log4j:message, log4j:NDC?, log4j:throwable?, log4j:locationInfo?)>
<!-- The timestamp format is application dependent. -->
<!ATTLIST log4j:event
	logger CDATA #REQUIRED
	level CDATA #REQUIRED
	thread CDATA #REQUIRED
	timestamp CDATA #REQUIRED
>
<!ELEMENT log4j:message (#PCDATA)>
<!ELEMENT log4j:NDC (#PCDATA)>
<!ELEMENT log4j:throwable (#PCDATA)>
<!ELEMENT log4j:locationInfo EMPTY>
<!ATTLIST log4j:locationInfo
	class CDATA #REQUIRED
	method CDATA #REQUIRED
	file CDATA #REQUIRED
	line CDATA #REQUIRED
>
