dhis2-devs team mailing list archive

[Bob Jolliffe <bobjolliffe@xxxxxxxxx>]

2009/4/16 Lars Helge Øverland <larshelge@xxxxxxxxx>:
>
>>
>>
>> I'm not sure if my reading of the docs is the same as yours.  It seems
>> to me that h2 will handle multiple connections in a thread safe manner
>> from within a single JVM.
>> (http://www.h2database.com/html/features.html#multiple_connections)
>
> Yup but we are using embedded mode, not client-server-mode (which runs over
> TCP):
>
> "If you want to access the same database at the same time from different
> processes or computers, you need to use the client / server mode."
>
> BIRT is apparently starting its own process.

Are you sure?  I've just been trying it on my machine and both birt
and dhis seem to be running in the same JVM (process).  Unless BIRT
for some reason forks a new process but that would be very un-java
like.

I might be wrong as I still haven't got around to the whole report
thing (I'd estimate I'm about 35% ploughing through DHIS2).  Is BIRT -
as included on DHIS - just a webapp, or does it fire up the whole
birt-eclipse thing?  In which case, yes, that would be a new process,
so yes, we would need to run in H2 mixed mode.  So yes, you are
probably right :-)

As a configuration note, I see that we need to make a
$(dhis2.home)/reports directory.

>>
>> Also I wonder if we should consider turning on Mysql compatibility
>> mode in the URL.
>> (http://www.h2database.com/html/features.html#compatibility).
>
> Could be useful.
>
>>
>> >
>> >
>> > My only concern now is the size, the whole thing without data zipped
>> > weighs
>> > in at 83 MB.
>
> 7zip max-mode gives you 70 MB. I hope we can exclude some unnecessary jars,
> having a look at the maven dependency graph...
>
>>
>> That's pretty big!  I wonder if we should consider distributing it
>> separately as well ie. without the dhis and birt wars.  One of the
>> features we can add to the "control panel" is a user
>> loading/unloading/updating of the wars.
>
> Some sort of automated update mechanism would be nice, yes...
>
>
>>
>> >
>> > Things now seem to work fine. Any objections against releasing a beta
>> > version so people can try it out?
>> >
>>
>> No I think that would be a good idea.  It seems pretty usable at
>> present with H2.
>
> OK.
>
>