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<H1>Re: {MUD} Re: various (MUD)</H1>
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<LI><em>To</em>: <A HREF="mailto:mud#megami,ibase.be">mud#megami,ibase.be</A></LI>
<LI><em>Subject</em>: Re: {MUD} Re: various (MUD)</LI>
<LI><em>From</em>: "Chris Lawrence" <<A HREF="mailto:clawrenc#xsvr1,cup.hp.com">clawrenc#xsvr1,cup.hp.com</A>></LI>
<LI><em>Date</em>: Mon, 26 Aug 1996 10:11:57 -0700</LI>
<LI><em>Reply-To</em>: <A HREF="mailto:mud#megami,ibase.be">mud#megami,ibase.be</A></LI>
<LI><em>Sender</em>: <A HREF="mailto:owner-mud#megami,ibase.be">owner-mud#megami,ibase.be</A></LI>
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<PRE>
On Aug 25, 9:20am, Alex Oren wrote:
> On Thu, 22 Aug 1996 15:39:31 -0700, ChrisL wrote:
> } Diagrammed:
> }
> } Event #1 starts processing.
> } Event #1 creates $Bubba.
> } Event #1 calls $Bubba.haircolour("brown")
> } Event #1 sets up Event #2 in its C&C success list.
> } Event #1 (eventually) C&C's successfully.
> } $Bubba is committed with brown hair.
> }
> } Event #2 ripens and starts processing.
> } Event #1 calls $Bubba.haircolour("white")
> } Event #2 (eventually) C&C's successfully.
> } $Bubba is committed with white hair.
> }
> } The basic idea is that an event can define a number of other events
> } whihc are to be logged if the current event suceeds or fails.
>
> Does it done automatically or does the coder have to explicitly write
> something like:
>
> if Event_Successful then ...
Largely semantic details, but my current implementation is of the form:
at_exit (E_SUCCESS, object.method, args...)
at_exit (E_FAILURE, object.method, args...)
Where multiple events can be queued for each state.
> So, the stuff that has to be buffered until the successful C&C is:
> - I/O (outbound)
> - Starting of new events
Anything done to an object (create, change, destroy)
Any IO (I send IO as seperate events chained off E_SUCCESS as above)
Dependant events (ie the at_exit stuff above)
> Did I miss any?
That seems pretty compleat.
> (I think that no special treatment is needed for creating/destroying objects,
> since they may be created in the cache and written tto tthe DB along with the
> other C&C changes).
That is my assumption, tho the DB needs to be explicitly tailored to handle
this, and to temporarily assign and reserve valid ObjectIDs. Object creates
and destroys are really of a different class of DB-level events than object
content changes.
--
J C Lawrence Internet: coder#ibm,net
---------------(*) Internet: clawrenc#cup,hp.com
...Honorary Member Clan McFUD -- Teamer's Avenging Monolith...
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<li><strong><A NAME="00026" HREF="msg00026.html">Re: {MUD} Re: various (MUD)</A></strong>
<ul compact><li><em>From:</em> alexo#sapiens,com (Alex Oren)</li></ul>
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<LI><STRONG><A NAME="00013" HREF="msg00013.html">{MUD} Re: various (MUD)</A></STRONG>
<UL><LI><EM>From:</EM> alexo#sapiens,com (Alex Oren)</LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><strong><A NAME="00027" HREF="msg00027.html">{MUD} Mobile behaviour</A></strong>,
Chris Lawrence <a href="mailto:clawrenc#xsvr1,cup.hp.com">clawrenc#xsvr1,cup.hp.com</a>, Tue 27 Aug 1996, 02:40 GMT
<LI><strong><A NAME="00013" HREF="msg00013.html">{MUD} Re: various (MUD)</A></strong>,
Alex Oren <a href="mailto:alexo#sapiens,com">alexo#sapiens,com</a>, Sun 25 Aug 1996, 17:00 GMT
<UL>
<LI><strong><A NAME="00023" HREF="msg00023.html">Re: {MUD} Re: various (MUD)</A></strong>,
Chris Lawrence <a href="mailto:clawrenc#xsvr1,cup.hp.com">clawrenc#xsvr1,cup.hp.com</a>, Tue 27 Aug 1996, 00:28 GMT
<UL>
<LI><strong><A NAME="00026" HREF="msg00026.html">Re: {MUD} Re: various (MUD)</A></strong>,
Alex Oren <a href="mailto:alexo#sapiens,com">alexo#sapiens,com</a>, Tue 27 Aug 1996, 02:24 GMT
<UL>
<LI><strong><A NAME="00028" HREF="msg00028.html">Re: {MUD} Re: various (MUD)</A></strong>,
Chris Lawrence <a href="mailto:clawrenc#xsvr1,cup.hp.com">clawrenc#xsvr1,cup.hp.com</a>, Tue 27 Aug 1996, 04:24 GMT
<UL>
<LI><strong><A NAME="00031" HREF="msg00031.html">Re: {MUD} Re: various (MUD)</A></strong>,
Alex Oren <a href="mailto:alexo#sapiens,com">alexo#sapiens,com</a>, Tue 27 Aug 1996, 15:30 GMT
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<LI><strong><A NAME="00011" HREF="msg00011.html">{MUD} Re: MUD: languages (type checking, sigh)</A></strong>,
Alex Oren <a href="mailto:alexo#sapiens,com">alexo#sapiens,com</a>, Sun 25 Aug 1996, 16:44 GMT
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