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From "Michael Osipov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-1768) NumericRange support for new query parser
Date Fri, 13 Feb 2015 21:12:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14320767#comment-14320767
] 

Michael Osipov commented on LUCENE-1768:
----------------------------------------

Though this is old and Lucene 3.x is not supported anymore, We have found a bug in our old
indexing service cause by the {{RangeQueryNode}}. It has been incorrectly implemented back
in 3.4. The logic is reversed compared to the fix in 4.0 thus making it unusable.

That is the logic in 3.x:
{code}
super(lower, upper, lower.getOperator() == CompareOperator.LE, upper
        .getOperator() == CompareOperator.GE);
{code}

and the logic in 4.x:
{code}
return new TermRangeQueryNode(lower, upper,
          lower.getOperator() == CompareOperator.GE,
          upper.getOperator() == CompareOperator.LE);
{code}

> NumericRange support for new query parser
> -----------------------------------------
>
>                 Key: LUCENE-1768
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1768
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: core/queryparser
>    Affects Versions: 2.9
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>              Labels: contrib, gsoc, gsoc2011, lucene-gsoc-11, mentor
>             Fix For: 3.4, 4.0-ALPHA
>
>         Attachments: TestNumericQueryParser-fix.patch, TestNumericQueryParser-fix.patch,
TestNumericQueryParser-fix.patch, TestNumericQueryParser-fix.patch, week-14.patch, week-7.patch,
week-8.patch, week1.patch, week11-13_for_lucene_3x.patch, week11-13_for_lucene_3x.patch, week15_for_lucene_3x.patch,
week15_for_trunk.patch, week2.patch, week3.patch, week4.patch, week5-6.patch
>
>
> It would be good to specify some type of "schema" for the query parser in future, to
automatically create NumericRangeQuery for different numeric types? It would then be possible
to index a numeric value (double,float,long,int) using NumericField and then the query parser
knows, which type of field this is and so it correctly creates a NumericRangeQuery for strings
like "[1.567..*]" or "(1.787..19.5]".
> There is currently no way to extract if a field is numeric from the index, so the user
will have to configure the FieldConfig objects in the ConfigHandler. But if this is done,
it will not be that difficult to implement the rest.
> The only difference between the current handling of RangeQuery is then the instantiation
of the correct Query type and conversion of the entered numeric values (simple Number.valueOf(...)
cast of the user entered numbers). Evenerything else is identical, NumericRangeQuery also
supports the MTQ rewrite modes (as it is a MTQ).
> Another thing is a change in Date semantics. There are some strange flags in the current
parser that tells it how to handle dates.



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