The following module was proposed for inclusion in the Module List:
modid: Log::Log4perl::Layout::XMLLayout
DSLIP: bdpOp
description: XML Layout
userid: GCARLS (Guido Carls)
chapterid: 21 (File_Handle_Input_Output)
communities:
similar:
Log::Log4perl::Layout::PatternLayout
Log::Log4perl::Layout::SimpleLayout
rationale:
Namespace Choice: The Log::Log4perl::Layout::* Namespace is used,
as all other existing layout modules use the same namespace. A
second choice would be the namespace below Log::Log4perl::Xml::* to
be close to the JAVA namespace used by log4j (see
http://jakarta.apache.org/log4j/docs/api/org/apache/log4j/xml/XMLLayout.html).
Approach: Creates a XML layout according to
http://jakarta.apache.org/log4j/docs/api/org/apache/log4j/xml/XMLLayout.html
Logfiles generated based on XMLLayout can be processed or viewed
with numerous XML based Tools. E.g. the chainsaw graphical user
interface - distributed in the JAVA based log4j package - supports
viewing and filtering XML-Logfiles that are based on the log4j.dtd.
chainsaw can be downloaded from http://jakarta.apache.org/
The output of the XMLLayout consists of a series of log4j:event
elements as defined in the log4j.dtd. It does not output a complete
well-formed XML file. The output is designed to be included as an
external entity in a separate file to form a correct XML file.
For example, if abc is the name of the file where the XMLLayout
ouput goes, then a well-formed XML file would be:
<?xml version="1.0" ?>
<!DOCTYPE log4j:eventSet SYSTEM "log4j.dtd" [<!ENTITY data SYSTEM
"abc">]>
<log4j:eventSet version="1.2"
xmlns:log4j="http://jakarta.apache.org/log4j/";> &data;
</log4j:eventSet>
This approach enforces the independence of the XMLLayout and the
appender where it is embedded.
The version attribute helps components to correctly intrepret
output generated by XMLLayout. The value of this attribute should be
"1.1" for output generated by log4j versions prior to log4j 1.2
(final release) and "1.2" for relase 1.2 and later.
Best regards,
Guido Carls
enteredby: GCARLS (Guido Carls)
enteredon: Sat Jul 26 07:43:39 2003 GMT
The resulting entry would be:
Log::Log4perl::Layout::
::XMLLayout bdpOp XML Layout GCARLS
Thanks for registering,
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