nk4um

Hi Tony,

Thanks a lot for your detailed and to the point solution to my problem. It worked beautifully.

Mircea

Hi Mircea,

XRL2 doesn''t support the [[arg:name]] syntax that you are using. I know that xrl(1) in NetKernel 3 did support it, and now in NetKernel 4 the mapper does support it too. The documentation for XRL2 doesn''t mention it but I''ve noticed in the codebase there is a limited support for it in the compact xrl:resolve!

It could be an enhancement to add this functionality but there is another way now. Arguments can be added to requests:

<xrl:include xmlns:xrl="http://netkernel.org/xrl"> <xrl:identifier>meta:expensesByMonth</xrl:idenfifier> <xrl:argument name="month">arg:month-number</xrl:argument> </xrl:include>

or compactly:

<xrl:include identifier="meta:expensesByMonth" argument-month="arg:month-number"/>

Then ensure your endpoint definition has an <id> tag on it so that the meta request in the xrl:include can find it:

<endpoint> <id>expensesByMonth</id> <grammar>res:/expenses/variable/month   <group name="month-number><regex type="integer"/></group> </grammar> ..... </endpoint>

Then the request issued by the xrl:include will be constructed with the correct identifier syntax however that is defined.

Hope that helps,
Tony

Hi,

I''m struggling trying to do something simple in concept. Essentially, I need to programmatically construct an URI by concatenating 2 parts a fix one and another being variable.

In some sort of pseudo-code:
URI= "res:/expenses/fixed/month" + ${arg:month-number} => "res:/expenses/fixed/month/7"
Note: By design, the URI-like string above "res:/expenses/fixed/month" does not resolve to any endpoint. But res:/expenses/fixed/month/7 does.

The following is the content of a content.xml file that is to be pushed into an XRL template. "month-number" is an argument that is passed to active:xrl2 so it is available when the content.xml is resolved.

<div xmlns:xrl="http://netkernel.org/xrl">
   <xrl:include>
      <xrl:identifier>meta:id-builder</xrl:identifier>
      <xrl:argument name="base">
         <literal>res:/expenses/fixed/month</literal>
      </xrl:argument>
      <xrl:argument name="appender">arg:month-number</xrl:argument>
   </xrl:include>
   <xrl:include identifier="res:/expenses/variable/month/[[arg:month-number]]"/>
   <xrl:include identifier="res:/expenses/variable/month/6"/>
</div>

In the div element above you can see 2 failed and one successful attempts to achieve my goal. The third xrl:include works fine but the month is hard-coded.

Please advise on a workable solution.

Thanks a lot,
Mircea