Mapping properties before filtering

[Christian Ashby <an...@cashby.me.uk>]

Hi,
	I want to setup a FilterSet from a user configuration properties file.

	The tokens within the properties file are all prefixed 'token.' or 
'token.{server}.' and I need to map these to their actual token names 
before passing them to the filterset.

	As an example, user.properties contains:

	token.APP_NAME=demo
	token.weblogic.JSP_DOCROOT=/demo/demo
	token.weblogic.STATIC_DOCROOT=/demo
	token.iAS.JSP_DOCROOT=/NASApp/demo/demo
	token.iAS.STATIC_DOCROOT=/NASApp/demo/demo

	The server.type property is set at execution time to do this parsing.

	I know that it can be done by using PropertyFile to write out a temporary 
property file from a PropertySet with a Mapper, but this seems clunky and 
akward to me.

	Am I missing a cleaner solution, or is this about the only way to achieve 
this aim?

Thanks,

Christian Ashby
Spiralinks, Inc.
http://www.spl.com/

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Re: Mapping properties before filtering

[Christian Ashby <an...@cashby.me.uk>]

Just to slightly redefine the problem:

> 	I want to setup a FilterSet from a user configuration properties file.
>
<snip>
>
> 	Am I missing a cleaner solution, or is this about the only way to
> achieve this aim?

	Basically the <FileSet> needs to be able to contain a <PropertySet>; I've 
done the conversion as below:

    <!-- Get tokens as a propertyset -->
    <propertyset id="deploy.tokens">
        <propertyref prefix="token." />
        <mapper type="glob" from="token.*" to="*" />
    </propertyset>
    <!-- Get server-specific tokens as a propertyset -->
    <propertyset id="server.deploy.tokens">
        <propertyref prefix="${server.type}.token." />
        <mapper type="glob" from="${server.type}.token.*" to="*" />
    </propertyset>

    <echoproperties>
        <propertyset refid="deploy.tokens"/>
        <propertyset refid="server.deploy.tokens"/>
    </echoproperties>

	And therefore have a propertyset of all tokens. At the moment I'm having 
to write this to a properties file befora calling:

<copy toDir="${dest.dir}">
  <fileset dir="${src.dir}">
    <include name="**/*.html">
  </fileset>
  <filterset begintoken="%" endtoken="*">
    <filtersfile file="${temp.dir}/user.tokens"/>
    <filtersfile file="${temp.dir}/server.tokens"/>
  </filterset>
</copy>

	Rather than (which would be nicer!)

<copy toDir="${dest.dir}">
  <fileset dir="${src.dir}">
    <include name="**/*.html">
  </fileset>
  <filterset begintoken="%" endtoken="*">
    <propertyset refid="deploy.tokens"/>
    <propertyset refid="server.deploy.tokens"/>
  </filterset>
</copy>

	Is this worth implementing? I may well attempt to do so if people think it 
worthwhile.

Thanks for your time,

Christian.

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