Regarding this e-mail, to check the correctness of the queries against the specification, is there any "validator" for CQL queries that could be used to check their correctness backed by OASIS, LOC or similar?

Thanks in advance,


-----Mensaje original-----
De: SRU (Search and Retrieve Via URL) Implementors [mailto:[log in to unmask]] En nombre de Mike Taylor
Enviado el: jueves, 02 de septiembre de 2010 22:18
Para: [log in to unmask]
Asunto: Re: Boolean search within an index

On 2 September 2010 18:12, Tim Williams <[log in to unmask]> wrote:
> I have this need to support complex boolean queries within a field.
> I'd like to not have to repeat the 'index relation' over and over
> within the statement.  Rather, I'd like something like
>   title = ((fish OR turtle) AND sea) - though, much more complex -
> and don't want to have to write:
>  ((title = fish OR title = turtle) AND title = sea)
> Logically, it's just projecting the index and relation upon the
> enclosed terms.  Before we depart from the CQL spec I thought I'd see
> if there was a way to get similar 'shortcutting' using build-in
> extension mechanisms?

Although the formal specification of CQL stupidly prohibits this
useful and unambiguous syntax, most or maybe all actual
implementations support it -- certainly the C/C++ parser in YAZ,
CQL-Java, the Perl CQL::Parser and thr Ruby gem all do.  Have you
tried just going ahead and doing it?  If it's being rejected, what CQL
parser are you using?

> Thanks,
> --tim

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