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https://issues.apache.org/jira/browse/SOLR-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13003421#comment-13003421
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David Smiley commented on SOLR-2113:
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It appears what I understood to be "idempotent" is different then the meaning
here. I looked this word up in
[wikipedia|http://en.wikipedia.org/wiki/Idempotence#Computer_science_meaning]
and it appears in the context of computer science that it has two separate
meanings. One meaning has more to do with side-effects, which is the meaning
I've always attached to the word. It comes up a lot when talking about
thread-safe code. The other meaning associated with functional programming is
the meaning intended by Yonik & Rob here -- a meaning I don't think I would
ever put to use. It's unfortunate that this word is ambiguous... since it's
very useful to use it to say that a method on a class always has the same
result for the same input, _without_ saying you can give the output back to the
input again and also get the same result.
> Create TermsQParser that deals with toInternal() conversion of external terms
> -----------------------------------------------------------------------------
>
> Key: SOLR-2113
> URL: https://issues.apache.org/jira/browse/SOLR-2113
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Hoss Man
> Fix For: 4.0
>
> Attachments: SOLR-2113.patch
>
>
> For converting facet.field response constraints into filter queries, it would
> be helpful to have a QParser that generated a TermQuery using the
> toInternal() converted result of the raw "q" param
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