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Posted to server-dev@james.apache.org by Danny Angus <da...@apache.org> on 2002/10/21 15:41:41 UTC
RE: AvalonMailRepository key generation
Hi Kwirirai,
Nice to hear from someone from Zimbabwe, I have a friend who lives near Chegutu.
As I understand it James encodes the mail UID, which is generated by the programme used to create the mail, James uses JavaMail to create messages.
I suspect that the specification for this UID will state the limits of uniqueness required, but I assume it will be something like "unique in the world" because mail moves from machine to machine.
I believe that Mail clients rely on this UID and POP3's UIDL command in "leave messages on the server" functionality, to prevent mail being downloaded twice and so on.
d.
> -----Original Message-----
> From: Kwirirai [mailto:kwiri@ibsdev.africaonline.co.zw]
> Sent: 21 October 2002 23:05
> To: 'James Developers List'
> Subject: AvalonMailRepository key generation
>
>
>
>
> Hi
> Could you help me in figuring out how the keys for storing mail in
> AvalonMailRepository are implemented .I have tried to follow the source
> code but to no avail.
> What I really want to know is how are the keys generated in such a way
> that duplicates do not occur even if the server is shut down.I am just
> trying to get a better
> understanding of James storage.
>
> Kwirirai Nhakwi
>
> Harare, Zimbabwe
>
>
>
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RE: AvalonMailRepository key generation
Posted by "Noel J. Bergman" <no...@devtech.com>.
If you are refering to the oddly labeled files in the file store
directories, look at them as hex strings. I'm attaching a small test
program to illustrate the point.
--- Noel
-----Original Message-----
From: Kwirirai [mailto:kwiri@ibsdev.africaonline.co.zw]
Sent: Monday, October 21, 2002 19:55
To: 'James Developers List'
Subject: RE: AvalonMailRepository key generation
Thanks Danny!
So does this mean for every incoming mail James takes the mail UID and
uses it to create a unique key( I actually mean the key for identifying
it in a mail repository).I read somewhere I don't remember exactly ,that
the keys are generated using time date stamps and if you really check
out the process of storing the message with Debug switched on you will
notice that the key will have some extra numbers and letters added to
the initial key ,How does James actually generate the extra parts for
the key.
Kwirirai Nhakwi
Harare
Zimbabwe
-----Original Message-----
From: Danny Angus [mailto:danny@apache.org]
Sent: Monday, October 21, 2002 6:42 AM
To: James Developers List; kwiri@ibsdev.africaonline.co.zw
Subject: RE: AvalonMailRepository key generation
Hi Kwirirai,
Nice to hear from someone from Zimbabwe, I have a friend who lives near
Chegutu.
As I understand it James encodes the mail UID, which is generated by the
programme used to create the mail, James uses JavaMail to create
messages.
I suspect that the specification for this UID will state the limits of
uniqueness required, but I assume it will be something like "unique in
the world" because mail moves from machine to machine.
I believe that Mail clients rely on this UID and POP3's UIDL command in
"leave messages on the server" functionality, to prevent mail being
downloaded twice and so on.
d.
> -----Original Message-----
> From: Kwirirai [mailto:kwiri@ibsdev.africaonline.co.zw]
> Sent: 21 October 2002 23:05
> To: 'James Developers List'
> Subject: AvalonMailRepository key generation
>
>
>
>
> Hi
> Could you help me in figuring out how the keys for storing mail in
> AvalonMailRepository are implemented .I have tried to follow the
source
> code but to no avail.
> What I really want to know is how are the keys generated in such a way
> that duplicates do not occur even if the server is shut down.I am just
> trying to get a better
> understanding of James storage.
>
> Kwirirai Nhakwi
>
> Harare, Zimbabwe
>
>
>
--
To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>
RE: AvalonMailRepository key generation
Posted by Kwirirai <kw...@ibsdev.africaonline.co.zw>.
Thanks Danny!
So does this mean for every incoming mail James takes the mail UID and
uses it to create a unique key( I actually mean the key for identifying
it in a mail repository).I read somewhere I don't remember exactly ,that
the keys are generated using time date stamps and if you really check
out the process of storing the message with Debug switched on you will
notice that the key will have some extra numbers and letters added to
the initial key ,How does James actually generate the extra parts for
the key.
Kwirirai Nhakwi
Harare
Zimbabwe
-----Original Message-----
From: Danny Angus [mailto:danny@apache.org]
Sent: Monday, October 21, 2002 6:42 AM
To: James Developers List; kwiri@ibsdev.africaonline.co.zw
Subject: RE: AvalonMailRepository key generation
Hi Kwirirai,
Nice to hear from someone from Zimbabwe, I have a friend who lives near
Chegutu.
As I understand it James encodes the mail UID, which is generated by the
programme used to create the mail, James uses JavaMail to create
messages.
I suspect that the specification for this UID will state the limits of
uniqueness required, but I assume it will be something like "unique in
the world" because mail moves from machine to machine.
I believe that Mail clients rely on this UID and POP3's UIDL command in
"leave messages on the server" functionality, to prevent mail being
downloaded twice and so on.
d.
> -----Original Message-----
> From: Kwirirai [mailto:kwiri@ibsdev.africaonline.co.zw]
> Sent: 21 October 2002 23:05
> To: 'James Developers List'
> Subject: AvalonMailRepository key generation
>
>
>
>
> Hi
> Could you help me in figuring out how the keys for storing mail in
> AvalonMailRepository are implemented .I have tried to follow the
source
> code but to no avail.
> What I really want to know is how are the keys generated in such a way
> that duplicates do not occur even if the server is shut down.I am just
> trying to get a better
> understanding of James storage.
>
> Kwirirai Nhakwi
>
> Harare, Zimbabwe
>
>
>
--
To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>