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From "Michael Neale (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-863) Patch to use FileLock for locking instead of empty file
Date Sat, 26 May 2007 01:09:16 GMT

    [ https://issues.apache.org/jira/browse/JCR-863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12499269
] 

Michael Neale commented on JCR-863:
-----------------------------------

I agree with Marcel. This is getting really nasty if we want to support from 1.4 through 1.6
(Java) in a non ugly fashion. Its also very hard to test. 

Perhaps the better solution is to make upgrading to Lucene 2.1 a priority, so this code (which
is lucene specific anyway) can be retired and this JIRA closed. 


> Patch to use FileLock for locking instead of empty file
> -------------------------------------------------------
>
>                 Key: JCR-863
>                 URL: https://issues.apache.org/jira/browse/JCR-863
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: query
>            Reporter: Michael Neale
>             Fix For: 1.4
>
>         Attachments: FSDirectory.patch, JCR-863.patch
>
>
> The FSDirectory uses File.createNewFile to effectively lock a directory (in makeLock),
yet the Java Spec says explcitly not to use it for this purpose, and instead use FileLock
from nio.
> The attached patch shows how this is/could be done (change is internal to the makeLock
method only, and functionally equivalent, the same tests apply).

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