How to store user input as an xml Parameter value in log4j.xml?

Question

I am working on an app that is blend of log4j , EJBs, JMS, weblogic.
In log4j, I have specified the value of  file appender;
but now what I  wanna do is: Take path for File (For File Appender) from user and use it as a File path for File Appender in log4j.xml 
Kindly guide me
Thank you!

Answer 1

I think the display of the trace in a standard WDA-component would be the best solution. Maybe Carsten Ziegler can help.
You can return the trace from the BRFplus-function call and can extract everything using XSLT (CALL TRANSFORMATION command):
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:sap="http://www.sap.com/sapxsl" xmlns:asx="http://www.sap.com/abapxml" version="1.0">
  <xsl:strip-space elements="*"/>
  <xsl:template match="/">
    <asx:abap>
      <asx:values>
        <ROOT>
          <xsl:apply-templates/>
        </ROOT>
      </asx:values>
    </asx:abap>
  </xsl:template>
  <xsl:template match="/FDT/LOG/TEXT">
    <item>
      <xsl:value-of select="string(.)"/>
     </item>
     <xsl:apply-templates/>
  </xsl:template>
  <xsl:template match="/FDT/LOG/CONTEXT_UPDATE">
    <item>
      <xsl:value-of select="concat(string(@DataObjectName), ' is assigned to ' , string(text()))"/>
     </item>
     <xsl:apply-templates/>
  </xsl:template>
  <xsl:template match="text() | @*">
  </xsl:template>
</xsl:transform>
You have to adjust the transformation to get the result you need.
Best Regards,
Tobias
P.S.: I'm still thinking about a better solution...