10:17 a.m.
The transactions module (org.jboss.jts) includes a flexible mechanism
for recovering transaction participants. Third party software can hook
into the recovery system by registering an object of type
java.lang.Class whose instances are capable of recovering particular
types of log record.
The registration is done by calling a static method defined in the jts
transactions module.
However this mechanism fails with the module class loading used in AS7
since the transactions module tries to instantiate an instance of a
class that belongs to another module (in my case it is a war deployed
into the deployment directory).
We use this mechanism in our REST API in order to support recovery.
My question is: is there a way of enabling the transactions module to
instantiate a class belonging to a war's class loader?
Mike
--
Michael Musgrove
mmusgrov(a)redhat.com
JBoss, by Red Hat
Registered in England and Wales under Company Registration No. 03798903
Directors: Michael Cunningham (USA), Brendan Lane (Ireland), Matt Parson
(USA), Charlie Peters (USA)
11:21 a.m.
New subject: Is there a way for a core module to load a class from a war
Sounds like what the ServiceLoader stuff is supposed to accomplish.
Bob
--
Sent from my iPhone
On Jul 4, 2011, at 11:14 AM, Michael Musgrove <mmusgrov(a)redhat.com> wrote:
The transactions module (org.jboss.jts) includes a flexible mechanism
for recovering transaction participants. Third party software can hook
into the recovery system by registering an object of type
java.lang.Class whose instances are capable of recovering particular
types of log record.
The registration is done by calling a static method defined in the jts
transactions module.
However this mechanism fails with the module class loading used in AS7
since the transactions module tries to instantiate an instance of a
class that belongs to another module (in my case it is a war deployed
into the deployment directory).
We use this mechanism in our REST API in order to support recovery.
My question is: is there a way of enabling the transactions module to
instantiate a class belonging to a war's class loader?
Mike
--
Michael Musgrove
mmusgrov(a)redhat.com
JBoss, by Red Hat
Registered in England and Wales under Company Registration No. 03798903
Directors: Michael Cunningham (USA), Brendan Lane (Ireland), Matt Parson
(USA), Charlie Peters (USA)
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jboss-as7-dev(a)lists.jboss.org
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11:49 a.m.
New subject: Is there a way for a core module to load a class from a war
You can instantiate a class in another module if you have a classloader or a module name
for that module. This could be done by adding a registration method that takes a
classloader. Alternatively if you are sure the incoming calls are all coming in from an EE
context which contains the classes (and not system code) you can use TCCL.
Lastly you can switch to some kind of declarative model and add a deployment processor
which handles registration as part of deployment.
Sent from my iPhone
On Jul 4, 2011, at 10:14 AM, Michael Musgrove <mmusgrov(a)redhat.com> wrote:
The transactions module (org.jboss.jts) includes a flexible mechanism
for recovering transaction participants. Third party software can hook
into the recovery system by registering an object of type
java.lang.Class whose instances are capable of recovering particular
types of log record.
The registration is done by calling a static method defined in the jts
transactions module.
However this mechanism fails with the module class loading used in AS7
since the transactions module tries to instantiate an instance of a
class that belongs to another module (in my case it is a war deployed
into the deployment directory).
We use this mechanism in our REST API in order to support recovery.
My question is: is there a way of enabling the transactions module to
instantiate a class belonging to a war's class loader?
Mike
--
Michael Musgrove
mmusgrov(a)redhat.com
JBoss, by Red Hat
Registered in England and Wales under Company Registration No. 03798903
Directors: Michael Cunningham (USA), Brendan Lane (Ireland), Matt Parson
(USA), Charlie Peters (USA)
_______________________________________________
jboss-as7-dev mailing list
jboss-as7-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/jboss-as7-dev
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2 comments
3 participants
participants (3)
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Bob McWhirter -
Jason Greene -
Michael Musgrove