Logicsheets

• Logicsheets are XSL files with an associated namespace.

• Primary mechanism to add program logic ( code ) to XSPs.

• These need to be registered in configuration file cocoon.xconf.

• Logicsheets are used by the generator to transform XML structure before generating program.

• Cocoon comes with a no. of built-in logic sheets:

  • request.xsl
  • response.xsl
  • session.xsl
  • cookie.xsl
  • esql.xsl
  • log.xsl
  • ….

<xsl:stylesheet version="1.0" xmlns:xsp="http://apache.org/xsp" xmlns:log="http://apache.org/xsp/log" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="log:logger">

… variable and xsp:logic statements ...

</xsl:template>

<xsl:template match="log:debug">

<xsp:logic>

if(getLogger() != null)

getLogger().debug("<xsl:value-of select="."/>");

</xsp:logic>

</xsl:template>

<xsl:template match="log:error">

...

</xsl:template>

</xsl:stylesheet>

Log.xsl structure

<xsp:page language="java"

xmlns:xsp="http://apache.org/xsp"

xmlns:log="http://apache.org/xsp/log">

<page>

<log:logger name=”test" filename=”test.log"/>

<log:debug>Test Message</log:debug>

</page>

</xsp:page>

A sample use

Previous slide

Next slide

Back to first slide

View graphic version