Re: Checking if an extension function exists and implementation/version sniffing

To differentiate between Orbeon Forms,betterFORM and XSLTForms the
following seems to be working:

<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
    xmlns:xxf="http://orbeon.org/oxf/xml/xforms"
xmlns:ev="http://www.w3.org/2001/xml-events">
    <head>
        <title>Implementation/version sniffing</title>
        <xf:model id="model">
            <xf:instance id="instance" xmlns="">
                <snif>
                    <tests>
                        <xpath10></xpath10>
                        <context></context>
                    </tests>
                    <implementations>
                        <betterform></betterform>
                        <xsltforms></xsltforms>
                        <orbeon></orbeon>
                    </implementations>
                    <implementation></implementation>
                </snif>
            </xf:instance>
            <xf:bind ref="instance()">
                <xf:bind nodeset="tests">
                    <xf:bind nodeset="xpath10" calculate="'1' =
'1.0'"></xf:bind>
                    <xf:bind nodeset="context"
id="context-bind"></xf:bind>
                </xf:bind>
                <xf:bind nodeset="implementations">
                    <xf:bind nodeset="betterform"
                        calculate="/snif/tests/xpath10='false' and
not(/snif/tests/context = 'true')"></xf:bind>
                    <xf:bind nodeset="xsltforms"
calculate="/snif/tests/xpath10"></xf:bind>
                    <xf:bind nodeset="orbeon"
calculate="/snif/tests/xpath10='false' and /snif/tests/context = 'true'"
                    ></xf:bind>
                </xf:bind>
                <xf:bind nodeset="implementation"
calculate="name(/snif/implementations/*[. = 'true'])"></xf:bind>
            </xf:bind>
            <xf:dispatch ev:event="xforms-ready" name="context-event"
targetid="model">
                <xxf:context name="context"
select="true()"></xxf:context>
            </xf:dispatch>
            <xf:setvalue ev:event="context-event" bind="context-bind"
value="event('context')"></xf:setvalue>
        </xf:model>
    </head>
    <body>
        <xf:output ref="implementation">
            <xf:label>implementation: </xf:label>
        </xf:output>
        <ul>
            <xf:repeat nodeset="*/*">
                <li>
                    <xf:output ref=".">
                        <xf:label>
                            <xf:output value="concat(name(), ':
')"></xf:output>
                        </xf:label>
                    </xf:output>
                </li>
            </xf:repeat>
        </ul>
    </body>
</html>

(http://xformsunit.org/trac/browser/resources/sandbox/sniffing.xhtml )

Reminds me of the ugliness of browsers sniffing though and I wish we
could have something better ;) ...

Thanks,

Eric


Le jeudi 19 septembre 2013 à 11:38 +0200, Eric van der Vlist a écrit :
> Hi,
> 
> My test framework (http://xformsunit.org/) is trying hard to work with
> several XForms implementations using generic/standard XForms features
> but I get a number of interoperability issues and I would need to test
> if extension functions are available in the implementation that's
> running a form (or a test suite) and/or to identify the implementation.
> 
> The mechanism to do so in XForms 1.1
> (http://www.w3.org/TR/xforms11/#expr-lib-extension ) seems to be rather
> "destructive" as it would stop any processing when a function is not
> available.
> 
> Do you have any idea on how I can achieve this kind of things?
> 
> Thanks,
> 
> Eric
> 
> 
> 
>

Received on Thursday, 19 September 2013 13:20:49 UTC