OK great! I'll see what I can do from here.
Thanks!
On 12 Mar 2009, at 12:45, Earwin Burrfoot wrote:
On Thu, Mar 12, 2009 at 21:16, Candide Kemmler <cand...@palacehotel.org
> wrote:
On 11 Mar 2009, at 23:21, Earwin Burrfoot wrote:
Take ANTLR and roll your own query parser from scratch? It's
pretty easy.
Hi Earwin,
That would be fantastic, since our parser is already specified as
an ANTLR
grammar. However, I can't seem to find an antlr grammar in the lucene
source. Obviously what we want is to extend the existing query
support, not
just create a new one from scratch.
Lucene's default QueryParser uses javacc if I'm not mistaken. And I
don't see any way to extend it except by patching and using modified
version.
If you want to explore some existing alternatives, Mark has an article
here - http://www.lucidimagination.com/blog/2009/02/22/exploring-query-parsers/
My personal opinion is that default parser is only suitable for
something that isn't going to see real world use.
Regards,
Candide
On Thu, Mar 12, 2009 at 04:24, Candide Kemmler <cand...@palacehotel.org
>
wrote:
Hello,
I'm looking at a way to extend the lucene query parser to allow for
semantic
computations in IEML space (see http://ieml.org). What I'd like
to know
is:
how difficult it would be to be able to add clauses to query
like: ...
AND (
some_IEML_expression) AND ...
some_IEML_expression would involve a reference to some field that
would
contain metadata expressed in that format.
Thanks in advance for you insights.
Candide
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