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From "Danny Angus" <da...@apache.org>
Subject RE: [VOTE] Changes to database table structure and class Mail
Date Fri, 02 Aug 2002 08:20:22 GMT
> Specifically, we are proposing that org.apache.mailet.Mail now include
> support for a Map allowing attributes to be dynamically
> associated with mail
> instances.  These attributes are different from X- headers, and
> are intended
> to be provide internal (and unforgable) communication of metadata
> within the
> James server.
>
> The map can be exposed via explicit methods, a la the Servlet API:
>
>    public void setAttribute(String, Object);
>    public Object getAttribute(String);
>    public Object removeAttribute(String);
>    public Enumeration getAttributeNames();
>
> by exposing the Map:
>
>    public Map getAttributes();
>
> or by being a Map:
>
>    public interface Mail extends Serializable, Cloneable, Map

+1 so far.

>
> I know what my suggestion would be, but I'm opening the topic for
> discussion.  Regardless of how we expose it, the new Map would be
> stored as
> a BLOB in the table, thus stored/retrieved as a unit.

If its serializable it should be TEXT, MEDIUMTEXT or LONGTEXT, and the same
really applies to message body too. IMHO.



> Next, Serge is proposing that the error message be moved from a separate
> field to the attribute map.  My proposal would be that any such properties
> be added to the Map, and have their set/get methods deprecated.
> What other
> properties, besides error, should be moved?  Perhaps the remote host and
> remote address properties.  I don't see any others that appear to be good
> candidates.  Message state is separately queried, and I'd like to
> keep that
> lightweight query available.
>
> So ... we need to make a decision so that this can be implemented.


+1 error_message, remote_host, remote_address

>
> 	--- Noel
>
>
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