John,
Related, two quesitons about plugin code for you and Stephan:
(1) Does the plugin code provide mechanism for running external program (separate process, not written in java)? This capability would be very useful, since there are many parsers out as standalone tools. Core issue would be pipe stdin, stdout and stderr properly. Byron has expressed the same interest before.
There is already a plugin that demonstrate this.
The open office plugin that adds 100++ new file formats to nutch use an external open office server.
The code isn't 100% compatible with our actually plugin -system implementation.
Until this week I have vacations so I can put it on my to do list for next weeks to update the code.
(2) If two plugins A and B depend on different versions of lib C, how does the plugin code handle it? I might face this possiblity in the future.
You simply can create a plugin that is just contains one jar file without any other code,
In the plugin.xml you export the library and you plugin A and B depends on your library plugin.
Attention there was a bug fix regarding classloading problems with my last plugin system patch that isn't in the cvs today.
This bug shouldn't be a problem in your scenario.
I can grep just the bug fix out of my last plugin contribution and submit it, but sorry not before Wednesday next week.
Ok?
Stefan
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