A template function can only have 10 parameters.

[jensopetersen]

declare function app:hello($a as node()*, $model as map(*), $p1 as xs:string?, 
$p2 as xs:string?, $p3 as xs:string?, $p4 as xs:string?, $p5 as xs:string?,
$p6 as xs:string?, $p7 as xs:string?, $p8 as xs:string?, $p9 as xs:string?) {
    'hello world'
};

raises the error,

templates:NotFound No template function found for call app:hello [at line 189, column 85, source: /Applications/exist_dev/webapp/WEB-INF/data/expathrepo/shared-0.4.0/content/templates.xql]

whereas removing one of the $p parameters does not.

We are currently working with a query function with 12 parameters, so more parameters should be allowed.

[wolfgangmm]

The current version of templates.xql allows 15 parameters. It is easy to support an arbitrary number of parameters if we switch to the new fn:apply function, but this will break backwards compatibility. I'm currently extending the package repo to properly handle version incompatibilities. Once this is done, we can release a new templating package without limits.

[jensopetersen]

I see that, but I still have to say that it breaks after 10 parameters. And it's not just my own setup: I just tried it out in the Shakespeare app on exist-db.org. Note that the error comes from templates:call(), not from templates:call-with-args() (then it should be "Too many arguments to function …).

[wolfgangmm]

As I said, it's easy to fix with the help of arrays and fn:apply. I just committed the corresponding changes to a branch:

https://github.com/eXist-db/shared-resources/tree/xq31-templating

You may copy templates.xql from there. Before we can officially update the app, I have to finish some work to ensure compatibility.

[jensopetersen]

This is fine, but it does not really help, for the error comes from templates:call(), not templates:call-with-args(). The error still occurs after shifting in the new templates.xql.

[wolfgangmm]

Yes, I understand. templates:call calls templates:resolve, which contained this:

if ($arity > 15) then
        ()
    else

I removed this in my version because it's no longer needed. It does work for me. Note that you also have to replace templates.xql in the EXIST_DATA/expathrepo dir, so it gets picked up by the loader.

[jensopetersen]

Even though 15 parameters were made possible a long time ago in templates:call-with-args(), templates:resolve() at first ruled this out, limiting the arity to 10. This was fixed 6 months ago in eXist-db/shared-resources#13, but this commit is not included in the latest xar, which is from 2014-07-21. This explains the error. What is needed is therefore an up-to-date xar.

[dizzzz]

move to correct repo