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Posted to dev@lucene.apache.org by "Woody Anderson (JIRA)" <ji...@apache.org> on 2010/07/18 05:08:49 UTC

[jira] Updated: (LUCENE-2544) Add 'divisor' to NumericField, allows for easy storage of full precision data, but indexing *starting* at lower precision.

     [ https://issues.apache.org/jira/browse/LUCENE-2544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Woody Anderson updated LUCENE-2544:
-----------------------------------

    Attachment: LUCENE-2544.patch

decided to leave numerictokenstream untouched and simply modify internals of NumericField. makes the diff very small.

> Add 'divisor' to NumericField, allows for easy storage of full precision data, but indexing *starting* at lower precision.
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2544
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2544
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Other
>    Affects Versions: 3.0.2
>            Reporter: Woody Anderson
>            Priority: Minor
>             Fix For: 3.0.2, 4.0
>
>         Attachments: LUCENE-2544.patch
>
>
> In some cases, we want to index a timestamp or some other high precision numeric at a much lower precision, but we still want to store the full precision data.
> Rather than have to do this with two Field objects in the Document, it'd be easier to provide NumericField with a divisor as well as prevision step. The divisor would apply before beginning the trie logic.
> most often, this is a divide by 1, but that will happen only during the constructor or setXXXValue() in NumericTokenStream.
> I have the patch for this, or i will after i isolate it.

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