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Re: Extension functions: msg#00016

Subject: Re: Extension functions
should have mentioned Rob (who contributed this) named the function repeatRow but the semantics should be the same.

Joern
Chris Picton wrote:
Hi all

One of my forms needs a set of nodes to have unique names.  There
doesn't seem to be anything in xforms 1.0 that can handle this, but
xforms 1.1 spec has the current() extension.  It would be used as:

<bind id="mybind" nodeset="@name" constraint="not(. = //nodes/[@name!=current()/@name"
/>

The current() function Returns the context node used to initialize the
evaluation of the containing XPath expression.

I need some pointers about implementing this in chiba

I would add the function to
org/chiba/xml/xforms/xpath/ChibaExtensionFunctions.java, but what would
its parameters be, and what type would it return.

I am assuming that it would take an ExpressionContext as a param, but
how do I get from that to whatever it is I have to return?

Any help would be appreciated

Chris





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