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From "Jim Klucar (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ACCUMULO-209) RegExFilter does not properly regex when using multi-byte characters
Date Wed, 07 Dec 2011 21:16:40 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jim Klucar updated ACCUMULO-209:
--------------------------------

    Status: Open  (was: Patch Available)
    
> RegExFilter does not properly regex when using multi-byte characters
> --------------------------------------------------------------------
>
>                 Key: ACCUMULO-209
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-209
>             Project: Accumulo
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 1.5.0
>            Reporter: Jim Klucar
>            Assignee: Billie Rinaldi
>             Fix For: 1.5.0
>
>         Attachments: accumulo-209.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> The current RegExFilter class uses a ByteArrayBackedCharSequence to set the data to match
against. The ByteArrayBackedCharSequence contains a line of code that prevents the matcher
from properly matching multi-byte characters.
> Line 49 of ByteArrayBackedCharSequence.java is:
> return (char) (0xff & data[offset + index]);                                    
                                                         
> This incorrectly casts a single byte from the byte array to a char, which is 2 bytes
in Java. This prevents the RegExFilter from properly performing Regular Expressions on multi-byte
character encoded values.
> A patch for the RegExFilter.java file has been created and will be submitted.

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