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Comments on the diagram (was: RE: [Pyatcron-devel-list] Cron backend: a

From: Julien Olivier
Subject: Comments on the diagram (was: RE: [Pyatcron-devel-list] Cron backend: a correction)
Date: Mon, 17 Nov 2003 11:19:31 +0000

Hi Xavier

I'd like to comment your diagram:

1) why do you split ScheduleedTask and GenericTask ? Isn't there 1 (1,1)
relation between them ? From what I see in your diagram, you seem to
want a (1,*) relation between. If I agree with it, doesn't it mean that
the ScheduledTask class should have a task _array_ property, as well as
appendTask(task), prependTask(task), removeTaskById(Id) and
getTaskById(Id) or something like that ?

2) In the ScheduledTask, I think that it should be arrays of minutes,
hours, days etc... as you can specify several dates for the same task.

3) I think the GenericTask should have functions like addParameter and
deleteParameter. It should automatically generate the execCommand from
it's sub-class properties. For example, an Archiver class, sub-class of
GenericTask would have a "archiverCommand" property as well as a
"pathToBackup" property. Now, calling the getExecCommand would generate
the "tar cvfz /tmp/pyatcrontmp645.tgz /home/pollux/important" command
using those properties.

I think that's all :)

BTW: thanks for your work. The diagram is a good idea, as well as the
docs in CVS.

Julien Olivier <address@hidden>

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