Hello,
Thanks. This would absolutely serve. I thought of doing it in
queryparser part which I mentioned in first mail. But if the query is
a complex one, then it would become a bit complicated. Thats why I
wanted to know whether there is any other way which is similar to the
second point in my first mail..
---> " 2) I could first pass the incoming query string to a default parser
provided by Solr and then retrieve all the Terms ( and then add
synonym terms ) using by calling Query.extractTerms() ..on the
returned Query object but I am unable to get how to point out
relations among the Terms like.. whether its Term1 OR Term2 AND Term3,
or Term1 AND Term2 AND Term3 .. or something else. "
Thanks.
2009/12/23 AHMET ARSLAN <iori...@yahoo.com>:
>> Hi,
>> I have explored
>> "DisMaxRequestHandler". It could serve for some
>> of my purposes but not all.
>> 1) It seems we have to decide that alternative field list
>> beforehand
>> and declare them in the config.xml . But the field list for
>> which
>> synonyms are to be considered is not definite ( at least in
>> the view
>> of declaring manually in the xml ), its getting updated
>> frequently
>> depending upon the indexed fiels. Anyways if the list is
>> too big its
>> hard to follow this approach.
>>
>> 2) I have another issue too.. We could mention city ,
>> place, town in
>> the dismax declaration, but what if there is another list
>> of synonyms
>> like .. if the query is "organisation : xyz".. for which I
>> would like
>> to convert the query to
>> organisation:xyz OR company:xyz OR
>> institution:xyz .
>>
>> As far as I explored it is not possible
>> to link city, organisation
>> to their corresponding synonyms seperately, but we can only
>> decalre a
>> set of default field names to be searched.
>> If I am wrong at any point, please
>> let me know.
>> Any other suggestions?
>> Thanks.
>
> If you want field synonyms seperately, then you can extend
> org.apache.solr.handler.component.SearchHandler and override
>
> public void handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp)
> {
>
> final String q = req.getParams().get(CommonParams.Q);
>
> String expandedQuery = "process incoming query with string operations e.g.
> if q.startsWith(organisation:) ";
>
> ModifiableSolrParams solrParams = new
> ModifiableSolrParams(req.getParams());
>
> solrParams.set(CommonParams.Q, expandedQuery);
> req.setParams(solrParams);
>
> super.handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp);
> }
>
> Then register this new request handler in solrconfig.xml and use it.
> Does this approach serve your purposes?
>
>
>
>
