Hello, amigos!
There are two things I would like to ask advice for:
1. I would like to validate the XML configuration file for log4cxx in the
project I am using.
There is a "log4j.dtd" document in the 0.9.8 version from SVN which should
serve this purpose.
The thing with this DTD is that there is no definition for an element named
"rollingPolicy" inside an "appender" element. This is observable by looking
inside the DTD; we've tried to validate the XML configuration with Eclipse and
its XML plugin and the result was the following:
The content of element type "appender" must match
"(errorHandler?,param*,layout?,filter*,appender-ref*)".
Is there something missing in the DTD file? The logger functions alright with
the "rollingPolicy" element included in the XML configuration. So, this seems
to be correctly specified.
!!! I need to mention that the use of a PROPERTIES file in the case of having
ANY kind of policies for logging (time based policies, rolling policies..) is
not advisable as it seems that the policies don't work with other types of
config files, but XML config files. This might be another issue....
I have read this on a log4cxx related discussion, but unfortunately I can't
tell you where and I can't provide a link.
2. Could anyone confirm the following being correct in the XML config file
for log4cxx?...
<param name="Encoding" value="UTF-16"/>
I am using this to change the encoding of the log files to Unicode (the
intention is to display Japanese, Arabic and other types of characters from
other character sets) inside the <appender> ... </appender> element in the XML
file.
Thank you very much!
Have a wonderful day, you all!
Sorin Popa
Romania
Mobile: +40 728 030299
The XML configuration file - log4cxx.xml
----------------------------------------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "log4j.dtd">
http://jakarta.apache.org/log4j/' debug="false">
<appender name="DRFA" class="org.apache.log4j.rolling.RollingFileAppender">
<param name="Append" value="true"/>
<param name="Encoding" value="UTF-16" />
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern"
value="C:\server_unicode.%d{yyyyMMdd}.log"/>
</rollingPolicy>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{HH:mm:ss.SSS} [%-5p]
%c{1} - %m%n"/>
</layout>
</appender>
<root>
<level value="DEBUG"/>
<appender-ref ref="DRFA"/>
</root>
</log4j:configuration>
The DTD file - log4j.dtd (file taken from log4cxx 0.9.8 SVN repository)
----------------------------------------------------------------------------------------------------------------------------------------------------------
<?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
>
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