* www.prevayler.org in ada?
@ 2013-08-16 23:24 johannes falcone
2013-08-18 18:38 ` Stephen Leake
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: johannes falcone @ 2013-08-16 23:24 UTC (permalink / raw)
is this possible?
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: www.prevayler.org in ada?
2013-08-16 23:24 www.prevayler.org in ada? johannes falcone
@ 2013-08-18 18:38 ` Stephen Leake
2013-09-01 0:20 ` johannes falcone
2013-08-19 21:52 ` Randy Brukardt
2013-08-20 20:29 ` Per Sandberg
2 siblings, 1 reply; 6+ messages in thread
From: Stephen Leake @ 2013-08-18 18:38 UTC (permalink / raw)
johannes falcone <visphatesjava@gmail.com> writes:
> is this possible?
Is what possible?
1) writing a persistence library in Ada; yes (see Text_IO for one
example, SAL.Config_Files, AdaXML, etc.)
2) interfacing to the Java implementaiton of Prevalyler; probably, but
it depends on how clean the Java API is.
many things are possible ...
--
-- Stephe
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: www.prevayler.org in ada?
2013-08-18 18:38 ` Stephen Leake
@ 2013-09-01 0:20 ` johannes falcone
0 siblings, 0 replies; 6+ messages in thread
From: johannes falcone @ 2013-09-01 0:20 UTC (permalink / raw)
no I mean re implement in ada
no java
implement in memory data, with update log to disk, including time info in each transaction, then dump whole memory data every few hours, so if the system faults you restore the dump, then run the update log to bring state back to normal
this replaces oracle mssql and mysql and postgresql as your persistance instead of some half baked redis mongodb solution
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: www.prevayler.org in ada?
2013-08-16 23:24 www.prevayler.org in ada? johannes falcone
2013-08-18 18:38 ` Stephen Leake
@ 2013-08-19 21:52 ` Randy Brukardt
2013-09-01 0:20 ` johannes falcone
2013-08-20 20:29 ` Per Sandberg
2 siblings, 1 reply; 6+ messages in thread
From: Randy Brukardt @ 2013-08-19 21:52 UTC (permalink / raw)
"johannes falcone" <visphatesjava@gmail.com> wrote in message
news:fa12ed9b-4326-4e50-9eaa-11c846d1abe2@googlegroups.com...
> is this possible?
I have no idea what "this" is, but in software in general, and for a
general-purpose programming language like Ada, that answer is always
"yes" -- anything is possible. (I probably ought to qualify this with
"almost", since things that defy physics probably aren't possible. But it's
pretty close to anything.)
The useful questions involve cost, efficiency, and design. (Is it possible
within a certain budget? Is it possible to do efficiently? Is the design
sensible for Ada?) Just because it's possible to do something doesn't make
it a good idea.
This was my mantra during the Ada 9x process, when the user-implementor
teams [one of which I was a lead on] were asked to determine if the newly
proposed features were implementable. Of course they were implementable, but
at what cost? Was the feature usable for Ada programmers? Was the feature
efficiently implementable? And so on.
Randy.
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: www.prevayler.org in ada?
2013-08-16 23:24 www.prevayler.org in ada? johannes falcone
2013-08-18 18:38 ` Stephen Leake
2013-08-19 21:52 ` Randy Brukardt
@ 2013-08-20 20:29 ` Per Sandberg
2 siblings, 0 replies; 6+ messages in thread
From: Per Sandberg @ 2013-08-20 20:29 UTC (permalink / raw)
Well anything is possible but what's the problem ??
On Fri, 16 Aug 2013 16:24:52 -0700 (PDT)
johannes falcone <visphatesjava@gmail.com> wrote:
> is this possible?
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-09-01 0:20 UTC | newest]
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2013-08-16 23:24 www.prevayler.org in ada? johannes falcone
2013-08-18 18:38 ` Stephen Leake
2013-09-01 0:20 ` johannes falcone
2013-08-19 21:52 ` Randy Brukardt
2013-09-01 0:20 ` johannes falcone
2013-08-20 20:29 ` Per Sandberg
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