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https://issues.apache.org/jira/browse/LUCENE-4271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499471#comment-13499471
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Michael McCandless commented on LUCENE-4271:
--------------------------------------------
I think it's odd to add syntax to Lucene's query parser that does ... nothing?
And it's strange to make Lucene's QP aware of Solr QP's syntax if it cannot do
anything with it. It seems like Solr's QP should have this logic instead ...
bq. Since I've opened this issue, I've seen even more people try to use {!foo}
syntax directly in a lucene query string.
I'm confused: how would this patch help such users? Ie if they are using
Lucene's QP this patch doesn't seem to help them ... if users are trying to use
Solr's syntax with Lucene's query parser, it seems like we should make it
easier for them to use Solr's query parsers (factor them out)...?
{quote}
Is the intention to mandate the !var syntax too? That seems like a pretty Solr
specific thing (being able to delegate the parsing to a QParser) but I can
imagine someone just wanting a map of values, e.g.
\{arg_1=val_1 arg_2=val_2\} word
{quote}
Right: if we added functionality to Lucene's QP that parsed those arg/val's to
an accessible Map<String,String> ... I think that would be a useful addition?
I agree we really shouldn't bake in Solr specific syntax into Lucene's QP ...
> Solr LocalParams for Lucene Query Parser
> ----------------------------------------
>
> Key: LUCENE-4271
> URL: https://issues.apache.org/jira/browse/LUCENE-4271
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Yonik Seeley
> Attachments: LUCENE-4271.patch
>
>
> The Lucene QueryParser should implement Solr's LocalParams syntax directly so
> that instead of
> {code}
> _query_:"{!geodist d=10 p=20.5,30.2}"
> {code}
> one could directly use
> {code}
> {!geodist d=10 p=20.5,30.2}
> {code}
> references: http://wiki.apache.org/solr/LocalParams
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