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Posted to solr-user@lucene.apache.org by Philip Durbin <ph...@gmail.com> on 2013/02/26 17:30:06 UTC
Compatibility between Lucene "Query" and Solr "SolrQuery" in classes SolrJ
I'm exploring a switch from Lucene to Solr in a Java EE webapp.
We have a method called getHitIds() that accepts as a parameter a
Lucene "Query" object:
http://lucene.apache.org/core/old_versioned_docs/versions/3_0_0/api/core/org/apache/lucene/search/Query.html
My IDE is telling me I can't simply pass it a "SolrQuery" object instead:
http://lucene.apache.org/solr/4_1_0/solr-solrj/org/apache/solr/client/solrj/SolrQuery.html
... so I'm finding myself significantly rewriting and changing how
search works just to get something working in Solr:
change getHitIds() param from Query to SolrQuery
https://github.com/IQSS/dvn/commit/688bbe6
I'd rather just keep the existing business logic in place, if
possible. That is to say, I'd like getHitIds() to return the same list
of IDs, but with Solr instead of Lucene.
If someone could point me in the right direction, I would really appreciate it.
Thanks,
Phil
--
http://greptilian.com
Re: Compatibility between Lucene "Query" and Solr "SolrQuery" in
classes SolrJ
Posted by Philip Durbin <ph...@gmail.com>.
Thanks, Tim, you've confirmed what I've suspected.
I appreciate the reality check. :)
Phil
On Tue, Feb 26, 2013 at 11:49 AM, Timothy Potter <th...@gmail.com> wrote:
> Hi Phil,
>
> It seems like you're treating Solr like a library and not a service.
> Solr is a service that abstracts away all the lower-level Lucene work
> like working with hits. If you want to work with hits, then you're
> better to stay with Lucene.
>
> So yes, you're going to need to change your client application code to
> work with Solr but all the work of converting hits into documents,
> cache management, IndexReader management, etc. is all done for you by
> Solr. With Solr, your focus is on constructing queries and processing
> responses. The mechanics of searching with Lucene are hidden. Thus,
> I'd say the amount client code to support search in your application
> will be reduced significantly using Solr.
>
> Cheers,
> Tim
>
> On Tue, Feb 26, 2013 at 9:30 AM, Philip Durbin <ph...@gmail.com> wrote:
>> I'm exploring a switch from Lucene to Solr in a Java EE webapp.
>>
>> We have a method called getHitIds() that accepts as a parameter a
>> Lucene "Query" object:
>>
>> http://lucene.apache.org/core/old_versioned_docs/versions/3_0_0/api/core/org/apache/lucene/search/Query.html
>>
>> My IDE is telling me I can't simply pass it a "SolrQuery" object instead:
>>
>> http://lucene.apache.org/solr/4_1_0/solr-solrj/org/apache/solr/client/solrj/SolrQuery.html
>>
>> ... so I'm finding myself significantly rewriting and changing how
>> search works just to get something working in Solr:
>>
>> change getHitIds() param from Query to SolrQuery
>> https://github.com/IQSS/dvn/commit/688bbe6
>>
>> I'd rather just keep the existing business logic in place, if
>> possible. That is to say, I'd like getHitIds() to return the same list
>> of IDs, but with Solr instead of Lucene.
>>
>> If someone could point me in the right direction, I would really appreciate it.
>>
>> Thanks,
>>
>> Phil
>>
>> --
>> http://greptilian.com
Re: Compatibility between Lucene "Query" and Solr "SolrQuery" in
classes SolrJ
Posted by Timothy Potter <th...@gmail.com>.
Hi Phil,
It seems like you're treating Solr like a library and not a service.
Solr is a service that abstracts away all the lower-level Lucene work
like working with hits. If you want to work with hits, then you're
better to stay with Lucene.
So yes, you're going to need to change your client application code to
work with Solr but all the work of converting hits into documents,
cache management, IndexReader management, etc. is all done for you by
Solr. With Solr, your focus is on constructing queries and processing
responses. The mechanics of searching with Lucene are hidden. Thus,
I'd say the amount client code to support search in your application
will be reduced significantly using Solr.
Cheers,
Tim
On Tue, Feb 26, 2013 at 9:30 AM, Philip Durbin <ph...@gmail.com> wrote:
> I'm exploring a switch from Lucene to Solr in a Java EE webapp.
>
> We have a method called getHitIds() that accepts as a parameter a
> Lucene "Query" object:
>
> http://lucene.apache.org/core/old_versioned_docs/versions/3_0_0/api/core/org/apache/lucene/search/Query.html
>
> My IDE is telling me I can't simply pass it a "SolrQuery" object instead:
>
> http://lucene.apache.org/solr/4_1_0/solr-solrj/org/apache/solr/client/solrj/SolrQuery.html
>
> ... so I'm finding myself significantly rewriting and changing how
> search works just to get something working in Solr:
>
> change getHitIds() param from Query to SolrQuery
> https://github.com/IQSS/dvn/commit/688bbe6
>
> I'd rather just keep the existing business logic in place, if
> possible. That is to say, I'd like getHitIds() to return the same list
> of IDs, but with Solr instead of Lucene.
>
> If someone could point me in the right direction, I would really appreciate it.
>
> Thanks,
>
> Phil
>
> --
> http://greptilian.com