[jira] Updated: (SM-1705) Make Resources in ServiceMix-Saxon smart enough to reload themselves

["Jon Brisbin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/activemq/browse/SM-1705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jon Brisbin updated SM-1705:
----------------------------

    Attachment: always_reload.diff.txt

This patch adds an "always reload" attribute to the saxon:xslt, saxon:query, and saxon:proxy elements. It blindly reloads the resource every time and doesn't check modification times so that it will work in all circumstances and with all protocols.

> Make Resources in ServiceMix-Saxon smart enough to reload themselves
> --------------------------------------------------------------------
>
>                 Key: SM-1705
>                 URL: https://issues.apache.org/activemq/browse/SM-1705
>             Project: ServiceMix
>          Issue Type: New Feature
>          Components: servicemix-saxon
>    Affects Versions: servicemix-saxon-2008.01
>            Reporter: Jon Brisbin
>            Priority: Minor
>         Attachments: always_reload.diff.txt
>
>
> It would be nice if the XSLT and XQuery resources inside the Saxon SE could monitor themselves for modifications and reload the Source when that event happens. This would work easily for file:/// resources (and classpath: for that matter, since Spring IO gives you the modification time of the jar file in which the resource lives), but other protocols would have to be fetched and hashed to tell if they've changed or not.
> I've implemented a simple patch against trunk that allows you to add a "reload" attribute to the saxon:xslt element that tells it to always reload the resource. This isn't ideal, but will work for all URL types that Resource handles. Anything more smart would have to be multi-threaded, like a File watcher.

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