On 23/07/11 09:39, Ioan Eugen Stan wrote:
2011/7/23 Norman Maurer<norman.mau...@googlemail.com>:
hi there,
comments inside...
Thanks Norman,
1. I have only access to the Message and Mailbox interfaces when
saving/deleting messages?
Sorry dont understand the question..
I tried to cast Message to HBaseMessage, but when I ran
HBaseMessageManagerTest it failed due to a ClassCast exception while
trying to cast a SimpleMessage to HBaseMessage. So it seemed that I
have to relay only on the interfaces. So I asked to make sure this was
the case.
Not sure in which case you encounter the exception.
As a general rule of thumb, if the interface has the methods you need,
simply use/declare interface. If you need additional methods in the
implementation, you need to use/declare the concrete.
If SimpleMessage has what you need, but still you want additional
behavior, HBaseMessage could extend SimpleMessage. The drawback is that
you are not immune to SimpleMessage refactoring.
4. What exactly are Properties from JPAMessage implementation and why
is order important? Are they the header fields?
its about extra infos that are needed for part fetches. The order is not
important, i think I changed the interface to not extend comperable
anymore..
My main source for inspiration is JPA implementation. JPAProperties
implementation keeps track of the order, but I think I will useorg.
apache.james.mailbox.store.mail.model.impl.SimpleProperty
instead of my own implementation.
If SimpleProperty has enough, you can use it.
It also depends if you want a separate table of Property, or use
columns/qualifiers on Message entry. If you are going to separate
table, you will need to think on the hbase key generation/accessor on
your Property object (SimpleProperty has no such key accessor...).
To which table schema are you going to?
bye
norman
Regards,
--
Eric Charles
http://about.echarles.net
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