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https://issues.apache.org/jira/browse/SOLR-356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12559206#action_12559206
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Hoss Man commented on SOLR-356:
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bq. Maybe I'm missing something from the recommendation though. Were you
recommending using XML to express the functions themselves, or something else
about the xml-query-parser?
I was not suggesting an XML syntax ... just that the approach the
xml-query-parser takes to deal with recursively parsing/eval-ing the XML
structure using "user" configured implementations for each type of XML node
seems to map closely to the idea of recusively parsing/eval-ing parenthetical
function syntax using "user" configured implantations for each function name.
In both cases the XML/paren parsing is trivial, it's deciding how to let the
"user" tell you what Java objects to build based on each node/function name
that gets interesting.
(like i said, i haven't looked at the xml-query-parser code since it was
orriginally being written .. i may be over romanticizing the idea behind it's
design and how applicable it could be in this case)
> pluggable functions (value sources)
> -----------------------------------
>
> Key: SOLR-356
> URL: https://issues.apache.org/jira/browse/SOLR-356
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
> Attachments: pluggableFunctions.patch, pluggableFunctions.patch
>
>
> allow configuration of new value sources ot be created by the function query
> parser.
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