You are viewing a plain text version of this content. The canonical link for it is here.
Posted to ojb-user@db.apache.org by Maksimenko Alexander <ma...@bird.cris.net> on 2004/06/02 08:35:09 UTC
OTM documentation
Hi!
I want use OTM to isolate transactions (hsqldb can't do this)
Is there any documentation (except tutorial) to understand the
principles of its wor?
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Maksimenko Alexander <ma...@bird.cris.net>.
Brian McCallister wrote:
> The ODMG api works fine in one JVM. It also works fine on really
> distributed ones =)
But it's overhead is more than if I use PersistenceBroker only (I guess)
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Maksimenko Alexander <ma...@bird.cris.net>.
Thomas Dudziak wrote:
>>>I've heard that McKoi (http://mckoi.com/database/) is a good in-jvm
>>>database
>>>
>>>
>>>
>>Yes, but it's GPL :(
>>
>>
>
>If you're not linking directly against it (i.e. in Java by importing
>classes from McKoi) but only using it via JDBC then there should be no
>problem. I've checked the McKoi mailing list to see whether this question
>was posted, and here it is:
>
>http://mckoi.com/database/mail/subject.jsp?id=893&highlight=license+#MSG_893
>
>(scroll down to the end, last mail from Tobias Downer).
>
>
Thank you!
You have saved me :)
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Thomas Dudziak <to...@first.gmd.de>.
On Wed, 2 Jun 2004, Maksimenko Alexander wrote:
> Thomas Dudziak wrote:
>
> >I've heard that McKoi (http://mckoi.com/database/) is a good in-jvm
> >database
> >
> Yes, but it's GPL :(
If you're not linking directly against it (i.e. in Java by importing
classes from McKoi) but only using it via JDBC then there should be no
problem. I've checked the McKoi mailing list to see whether this question
was posted, and here it is:
http://mckoi.com/database/mail/subject.jsp?id=893&highlight=license+#MSG_893
(scroll down to the end, last mail from Tobias Downer).
Tom
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Maksimenko Alexander <ma...@bird.cris.net>.
Thomas Dudziak wrote:
>I've heard that McKoi (http://mckoi.com/database/) is a good in-jvm
>database
>
Yes, but it's GPL :(
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Thomas Dudziak <to...@first.gmd.de>.
On Wed, 2 Jun 2004, Brian McCallister wrote:
> The ODMG api works fine in one JVM. It also works fine on really
> distributed ones =)
>
> Another in-jvm database worth considering is Axion (
> http://axion.tigris.org/features.html ) -- it is transactional, but
> development seems to have slowed on it as the last release was almost a
> year ago =/
I've heard that McKoi (http://mckoi.com/database/) is a good in-jvm
database (is e.g. used by SnipSnap, http://www.snipsnap.org). I planned to
add support for it after 1.0 is ouz.
Tom
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Brian McCallister <mc...@forthillcompany.com>.
The ODMG api works fine in one JVM. It also works fine on really
distributed ones =)
Another in-jvm database worth considering is Axion (
http://axion.tigris.org/features.html ) -- it is transactional, but
development seems to have slowed on it as the last release was almost a
year ago =/
-Brian
On Jun 2, 2004, at 8:19 AM, Maksimenko Alexander wrote:
> Brian McCallister wrote:
>
>> The OTM is usable, but I wouldn't use it for critical apps quite yet.
>> FWIW, we maintain ODMG and OTM implementations of our repository side
>> by side and they both work fine in all cases so far -- the ODMG is in
>> production though, not the OTM =/
>>
>> I would call the OTM released-but-unstable in 1.0 and ODMG stable.
>> ODMG can provide the same object-space transaction isolation you are
>> looking for, I think.
>
>
> I've read that ODMG is for massive distribute environments, but my
> application runs in one JDK and my database runs in same jdk (I find
> that only hsql is LGPL and can work in the same jdk, but it didn't
> have transaction isolation).
> Does anybody try to use LockManager without OTM ?
>
> --
> Maksimenko Alexander
> Softwarium, www.softwarium.net
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Maksimenko Alexander <ma...@bird.cris.net>.
Brian McCallister wrote:
> The OTM is usable, but I wouldn't use it for critical apps quite yet.
> FWIW, we maintain ODMG and OTM implementations of our repository side
> by side and they both work fine in all cases so far -- the ODMG is in
> production though, not the OTM =/
>
> I would call the OTM released-but-unstable in 1.0 and ODMG stable.
> ODMG can provide the same object-space transaction isolation you are
> looking for, I think.
I've read that ODMG is for massive distribute environments, but my
application runs in one JDK and my database runs in same jdk (I find
that only hsql is LGPL and can work in the same jdk, but it didn't have
transaction isolation).
Does anybody try to use LockManager without OTM ?
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Brian McCallister <mc...@forthillcompany.com>.
The OTM is usable, but I wouldn't use it for critical apps quite yet.
FWIW, we maintain ODMG and OTM implementations of our repository side
by side and they both work fine in all cases so far -- the ODMG is in
production though, not the OTM =/
I would call the OTM released-but-unstable in 1.0 and ODMG stable. ODMG
can provide the same object-space transaction isolation you are looking
for, I think.
-Brian
On Jun 2, 2004, at 7:13 AM, Maksimenko Alexander wrote:
> Armin Waibel wrote:
>
>>> I want use OTM to isolate transactions (hsqldb can't do this)
>>> Is there any documentation (except tutorial) to understand the
>>> principles of its wor?
>>
>> sorry, AFAIK no. The OTM-api will be officially released in 1.1
>> version, till then the lack of OTM docs will in all probability
>> continue.
>>
> So, does it mean OTM not redy for production environment?
> Can I use Lock Manager without OTM ?
>
> --
> Maksimenko Alexander
> Softwarium, www.softwarium.net
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Maksimenko Alexander <ma...@bird.cris.net>.
Armin Waibel wrote:
>> I want use OTM to isolate transactions (hsqldb can't do this)
>> Is there any documentation (except tutorial) to understand the
>> principles of its wor?
>
> sorry, AFAIK no. The OTM-api will be officially released in 1.1
> version, till then the lack of OTM docs will in all probability continue.
>
So, does it mean OTM not redy for production environment?
Can I use Lock Manager without OTM ?
--
Maksimenko Alexander
Softwarium, www.softwarium.net
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: OTM documentation
Posted by Armin Waibel <ar...@apache.org>.
Hi Alexander,
Maksimenko Alexander wrote:
> Hi!
> I want use OTM to isolate transactions (hsqldb can't do this)
> Is there any documentation (except tutorial) to understand the
> principles of its wor?
sorry, AFAIK no. The OTM-api will be officially released in 1.1 version,
till then the lack of OTM docs will in all probability continue.
regards,
Armin
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org