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From "Israel Ekpo (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2460) Search Results Filtering Based on Bitwise Operations on Integer Fields
Date Fri, 14 May 2010 01:47:50 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Israel Ekpo updated LUCENE-2460:
--------------------------------

    Attachment: LUCENE-2460-bitwise.tar.gz

Attaching the package containing the BitwiseFilter class

> Search Results Filtering Based on Bitwise Operations on Integer Fields
> ----------------------------------------------------------------------
>
>                 Key: LUCENE-2460
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2460
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Search
>            Reporter: Israel Ekpo
>             Fix For: 3.1, 4.0
>
>         Attachments: LUCENE-2460-bitwise.tar.gz
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> This package makes it possible to filter results returned from a query based on the results
of a bitwise operation on an integer field in the documents returned from the pre-constructed
query.
> You can perform three basic types of operations on these integer fields
>     * BitwiseOperation.BITWISE_AND (bitwise AND)
>     * BitwiseOperation.BITWISE_OR (bitwise inclusive OR)
>     * BitwiseOperation.BITWISE_XOR (bitwise exclusive OR)
> You can also negate the results of these operations.
> For example, imagine there is an integer field in the index named "flags" with the a
value 8 (1000 in binary). The following results will be expected :
>    1. A source value of 8 will match during a BitwiseOperation.BITWISE_AND operation,
with negate set to false.
>    2. A source value of 4 will match during a BitwiseOperation.BITWISE_AND operation,
with negate set to true.
> The BitwiseFilter constructor accepts the following values
>     * The name of the integer field (A string)
>     * The BitwiseOperation object. Example BitwiseOperation.BITWISE_XOR
>     * The source value (an integer)
>     * A boolean value indicating whether or not to negate the results of the operation
>     * A pre-constructed org.apache.lucene.search.Query

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