Robert Sanderson wrote:
>> searchClause ::= '(' cqlQuery ')' | index relation searchTerm |
>> searchTerm
>> i.e. the middle "searchTerm" should be "searchClause".
>
>
> Please note that this allows for:
>    dc.title = (dc.identifier any fish)
>
> Which to my mind is meaningless and the grammar shouldn't allow it, but to
> Mike's mind is equivalent to just:
>     dc.identifer any fish
>
> As per the previous time this was discussed, the only situation it's
> actually useful is:
>     dc.title = (a or b and c)
>
> which otherwise has to be spelt out as:
>     dc.title = a or dc.title = b and dc.title = c
>
> which is still not very difficult, especially for code generated queries,
> which is and will be the majority of them, I suspect.

Hi all,

I just added support for this extended syntax to my CQL parser and the
BNF that I assumed was something like:

searchClause    ::=     '(' cqlQuery ')'
                        | index relation searchTerm
                        | searchTerm
                        | index relation '(' searchTermGroup ')'

searchTermGroup ::=     searchTermGroup booleanGroup searchTerm
                        | searchTerm

Kind regards,
        Tom

>
>
> Rob
>
>       ,'/:.          Dr Robert Sanderson ([log in to unmask])
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