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Posted to dev@lucene.apache.org by "Grant Ingersoll (JIRA)" <ji...@apache.org> on 2006/12/29 15:53:25 UTC
[jira] Assigned: (LUCENE-762) [PATCH] Efficiently retrieve sizes of
field values
[ http://issues.apache.org/jira/browse/LUCENE-762?page=all ]
Grant Ingersoll reassigned LUCENE-762:
--------------------------------------
Assignee: Grant Ingersoll
> [PATCH] Efficiently retrieve sizes of field values
> --------------------------------------------------
>
> Key: LUCENE-762
> URL: http://issues.apache.org/jira/browse/LUCENE-762
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Store
> Affects Versions: 2.1
> Reporter: Chuck Williams
> Assigned To: Grant Ingersoll
> Attachments: SizeFieldSelector.patch
>
>
> Sometimes an application would like to know how large a document is before retrieving it. This can be important for memory management or choosing between algorithms, especially in cases where documents might be very large.
> This patch extends the existing FieldSelector mechanism with two new FieldSelectorResults: SIZE and SIZE_AND_BREAK. SIZE creates fields on the retrieved document that store field sizes instead of actual values. SIZE_AND_BREAK is especially efficient if one field comprises the bulk of the document size (e.g., the body field) and can thus be used as a reasonable size approximation.
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