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Posted to dev@lucene.apache.org by Candide Kemmler <ca...@palacehotel.org> on 2009/03/12 02:24:03 UTC
extending the query parser
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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Re: extending the query parser
Posted by Candide Kemmler <ca...@palacehotel.org>.
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 <candide@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 <candide@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
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>>>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
>>> Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
>>> ICQ: 104465785
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>
>>
>
>
>
> --
> Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
> Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
> ICQ: 104465785
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
---------------------------------------------------------------------
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Re: extending the query parser
Posted by Earwin Burrfoot <ea...@gmail.com>.
On Thu, Mar 12, 2009 at 21:16, Candide Kemmler <ca...@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 <ca...@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
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>>
>>>
>>
>>
>>
>> --
>> Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
>> Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
>> ICQ: 104465785
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
>
--
Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
ICQ: 104465785
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
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Re: extending the query parser
Posted by Candide Kemmler <ca...@palacehotel.org>.
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.
Regards,
Candide
> On Thu, Mar 12, 2009 at 04:24, Candide Kemmler <candide@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
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>
>>
>
>
>
> --
> Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
> Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
> ICQ: 104465785
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org
Re: extending the query parser
Posted by Earwin Burrfoot <ea...@gmail.com>.
Take ANTLR and roll your own query parser from scratch? It's pretty easy.
On Thu, Mar 12, 2009 at 04:24, Candide Kemmler <ca...@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
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
>
--
Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423
ICQ: 104465785
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org