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From "Qian Su (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-1254) Kaha Store puts a non-string into System properties
Date Mon, 23 Jul 2007 18:31:49 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-1254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_39745
] 

Qian Su commented on AMQ-1254:
------------------------------

Does release 5 come with the fixed version of activeio, i.e. property org.apache.activeio.journal.active.lockMap
is set to string properly? As far as I know, release 4.1.1 comes with activeio-3.0.0-incubator
which has the bug and their current trunk has it fixed.

Thx!

> Kaha Store puts a non-string into System properties
> ---------------------------------------------------
>
>                 Key: AMQ-1254
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1254
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 4.1.2
>            Reporter: David Jencks
>            Assignee: Rob Davies
>             Fix For: 5.0.0
>
>         Attachments: Kaha-Store.patch
>
>
> KahaStore puts a hashmap into SystemProperties, which causes problems with programs that
expect only strings as properties.  In particular some versions of Hibernate assume all system
properties are strings: this is causing difficulties running roller in geronimo 2.0
> Attached is a proposed solution.  I have no idea how to test it.  I get the same 7 failures
and one error building amq with and without the change.
> The proposal stores the list of locked directories in a string and converts it back and
forth to a map whenever it is accessed.  I use a constant string as the vm-wide lock monitor
formerly provided by the HashSet.  According to the String javadoc constant strings are intern()ed
and the same instance is provided in any classloader: this makes it suitable for a vm-wide
lock monitor.

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