RE: Variable Declaration in Query Prolog

Note that parameterizing namespace and schema declarations basically
means that you cannot compile the functions (since the type information
becomes dynamic). This is not something I need in a v1.0 standard or
implementation.

Best regards
Michael

> -----Original Message-----
> From: TAN Kuan Hui [mailto:kuanhui@mobileworkspace.com]
> Sent: Wednesday, February 06, 2002 19:33 PM
> To: www-ql@w3.org
> Cc: Jonathan Robie; Michael Rys; Per Bothner
> Subject: RE: Variable Declaration in Query Prolog
> 
> >
> >At 02:02 PM 2/6/2002 -0800, Michael Rys wrote:
> >>Function libraries do not need set of variables to be passed.
Function
> >>libraries provide functions that have parameters.
> >>
> agree and theoretically isn't a good practice for functions to rely on
> global variables for good reusuability. However, from the grammar,
> we can't pass in Query Prolog components like schema/namespace
> declaration as function parameters; quite the contrary, function
> definitions
> are always encapsulated within a Query Prolog, wouldn't that
> make functions less reusable say for a different set of schemas
> or namespaces ? I need time to further think on this.
> 
> >
> >Here is one example: I wrote a function library for querying RDF.
Almost
> >every function in that library needed to be able to reference a
common
> set
> >of assertions. I had to pass the assertions into every function as a
> >parameter, but first I had to normalize them, so referring to the
source
> >was not appropriate.
> >
> Hi Jonathan, you really lost me there, what do you mean exactly by
> passing assertions into functions as parameter ? We can only pass
> variable and at best a typed variable right ?
> 
> Kuan Hui
> 
> 
> 
>

Received on Thursday, 7 February 2002 12:52:30 UTC