Remote functions!

WilliamYou · December 20th, 2012, 06:03 AM

Hello (again).

Is this even possible? I would like to create an <xsl:function> and store its definition and implementation on a remote server so I do not need to include the code in the template but still be able to use within my XSLT when I have my debug flag set.

So my template would look like this:

Code:

<xsl:template ...>
    ...
    <xsl:if test="$debug">
        <xsl:value-of select="myNS:Dump($Buffer)"/>
    </xsl:if>
</xsl:template>

With the actual code being called from the server.

--
William

mhkay · December 20th, 2012, 06:54 AM

I don't know of an implementation that provides this feature, but there's nothing in the language to preclude it.

Martin Honnen · December 20th, 2012, 07:01 AM

The only current solution I can think of is providing a stylesheet module on the server and then importing or including it e.g. you put the module on the server or have a page generating it so that it is accessible via HTTP and then in the code you use

Code:

<xsl:import href="http://example.com/modules/funfoo.xsl"/>

See http://www.w3.org/TR/xslt#section-Combining-Stylesheets. Of course you then will need to make sure the code returns is a stylesheet with the function code and not a single function.

WilliamYou · December 20th, 2012, 07:04 AM

Thank you both.

I was looking in to Michael's reply and ended up with Martin's answer. So I'm very happy with that, maybe I should have given it a bit more thought before posting!

--
William

WilliamYou · December 20th, 2012, 07:28 AM

As noted earlier this does work but when the function is not available (simulated by excluding the xsl:include) then I can't compile the stylesheet.

I have tried use-when

Code:

<xsl:if test="$debug">
            <xsl:value-of select="myNS:Dump($Buffer)" use-when="not(function-available('myNS:Dump'))"/>
        </xsl:if>

and

Code:

<xsl:if test="$debug" use-when="not(function-available('myNS:Dump'))">
            <xsl:value-of select="myNS:Dump($Buffer)"/>
        </xsl:if>

to no avail, is there anything I can do here? As I have to take into consideration the fact that the system where this is used may be working offline, so I would appreciate your thoughts.

--
William