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Posted to users@openjpa.apache.org by Kevin Sutter <kw...@gmail.com> on 2012/02/03 21:08:39 UTC
Re: To TransactionAttributeType.NOT_SUPPORTED or not to TransactionAttributeType.NOT_SUPPORTED
Hi Tom,
Sorry that I missed this one... Maybe you have already figured out the
answer...
First off, JPA does not play into your transaction timeout or suspension
processing. All of that is part of the WebSphere application server
processing, so I would reference the InfoCenter for more definitive answers
[1].
But, I do know that any active transaction will be suspended when a
NOT_SUPPORTED method is encountered. So, any time that your innerMethod is
invoked, the current transaction would be suspended. As far as whether the
timer keeps running, I would guess "yes", but I think you need some JTA
experts to be sure.
HTH,
Kevin
[1]
http://publib.boulder.ibm.com/infocenter/wasinfo/v8r0/topic/com.ibm.websphere.express.iseries.doc/info/iseriesexp/ae/tjta_settlog.html
On Wed, Jan 25, 2012 at 9:20 PM, Tom Rowe <
charles.paisley.the.baby.crusher@gmail.com> wrote:
> Greetings to my former JPA friends. I have a few questions about
> TransactionAttributeType.NOT_SUPPORTED.
> My environment is WAS v7, but I think it matters not.
> Here's the setup..
>
> - - - - - - - - - - - - - - - - - - - - - -
>
> @Stateless
> public class OuterService implements IOuterService {
>
> @PersistenceContext( unitName = "OuterService" )
> EntityManager em;
>
> @EJB( name = "ejblocal:com.mycompany.mypackage.IInnerService" )
> IInnerService innerService;
>
> ....
>
> public Object outerMethod() throws Exception {
> ...
> innerService.innerMethod();
> ...
> }
> }
>
> - - - - - - - - - - - - - - - - - - - - - -
>
> package com.mycompany.mypackage;
> @Stateless
> public class InnerService implements IInnerService {
>
> @PersistenceContext( unitName = "OuterService" )
> EntityManager em; // PC matches!
>
> ....
>
> @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
> public Object innerMethod() throws Exception {
> ...
> }
> }
>
> - - - - - - - - - - - - - - - - - - - - - -
>
> <persistence xmlns="http://java.sun.com/xml/ns/persistence"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
> http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
> version="2.0">
> <persistence-unit name="OuterService">
> <jta-data-source>MY-JTA-DATA-SOURCE</jta-data-source>
> <class>...</class>
> ...
> <properties>
> <property name="javax.persistence.jdbc.user"
> value="me" />
> <property name="javax.persistence.jdbc.password"
> value="password" />
> <property name="openjpa.jdbc.SynchronizeMappings"
> value="validate" />
> </properties>
> </persistence-unit>
> </persistence>
>
> - - - - - - - - - - - - - - - - - - - - - -
>
> Questions:
> 1. Do WebSphere transaction timeouts (default=120 secs) get suspended
> across
> calls to innerMethod() because of TransactionAttributeType.NOT_SUPPORTED?
> 2. Do WebSphere transaction timeouts get suspended across calls to
> outerMethod() when/if innerService.innerMethod() is invoked?
>
> Thanks, in advance for your time and consideration..
>
> Tom Rowe
>
> --
> View this message in context:
> http://openjpa.208410.n2.nabble.com/To-TransactionAttributeType-NOT-SUPPORTED-or-not-to-TransactionAttributeType-NOT-SUPPORTED-tp7225877p7225877.html
> Sent from the OpenJPA Users mailing list archive at Nabble.com.
>
Re: To TransactionAttributeType.NOT_SUPPORTED or not to
TransactionAttributeType.NOT_SUPPORTED
Posted by Tom Rowe <ch...@gmail.com>.
Kevin:
Thank you for your insights. This helps a lot.
Cheers,
Tom
On Fri, Feb 3, 2012 at 3:09 PM, Kevin Sutter [via OpenJPA] <
ml-node+s208410n7251989h22@n2.nabble.com> wrote:
> Hi Tom,
> Sorry that I missed this one... Maybe you have already figured out the
> answer...
>
> First off, JPA does not play into your transaction timeout or suspension
> processing. All of that is part of the WebSphere application server
> processing, so I would reference the InfoCenter for more definitive
> answers
> [1].
>
> But, I do know that any active transaction will be suspended when a
> NOT_SUPPORTED method is encountered. So, any time that your innerMethod
> is
> invoked, the current transaction would be suspended. As far as whether
> the
> timer keeps running, I would guess "yes", but I think you need some JTA
> experts to be sure.
>
> HTH,
> Kevin
>
> [1]
>
> http://publib.boulder.ibm.com/infocenter/wasinfo/v8r0/topic/com.ibm.websphere.express.iseries.doc/info/iseriesexp/ae/tjta_settlog.html
>
> On Wed, Jan 25, 2012 at 9:20 PM, Tom Rowe <
> [hidden email] <http://user/SendEmail.jtp?type=node&node=7251989&i=0>>
> wrote:
>
> > Greetings to my former JPA friends. I have a few questions about
> > TransactionAttributeType.NOT_SUPPORTED.
> > My environment is WAS v7, but I think it matters not.
> > Here's the setup..
> >
> > - - - - - - - - - - - - - - - - - - - - - -
> >
> > @Stateless
> > public class OuterService implements IOuterService {
> >
> > @PersistenceContext( unitName = "OuterService" )
> > EntityManager em;
> >
> > @EJB( name = "ejblocal:com.mycompany.mypackage.IInnerService" )
> > IInnerService innerService;
> >
> > ....
> >
> > public Object outerMethod() throws Exception {
> > ...
> > innerService.innerMethod();
> > ...
> > }
> > }
> >
> > - - - - - - - - - - - - - - - - - - - - - -
> >
> > package com.mycompany.mypackage;
> > @Stateless
> > public class InnerService implements IInnerService {
> >
> > @PersistenceContext( unitName = "OuterService" )
> > EntityManager em; // PC matches!
> >
> > ....
> >
> > @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
> > public Object innerMethod() throws Exception {
> > ...
> > }
> > }
> >
> > - - - - - - - - - - - - - - - - - - - - - -
> >
> > <persistence xmlns="http://java.sun.com/xml/ns/persistence"
> > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> > xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
> > http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
> > version="2.0">
> > <persistence-unit name="OuterService">
> > <jta-data-source>MY-JTA-DATA-SOURCE</jta-data-source>
> > <class>...</class>
> > ...
> > <properties>
> > <property name="javax.persistence.jdbc.user"
> > value="me" />
> > <property name="javax.persistence.jdbc.password"
> > value="password" />
> > <property name="openjpa.jdbc.SynchronizeMappings"
> > value="validate" />
> > </properties>
> > </persistence-unit>
> > </persistence>
> >
> > - - - - - - - - - - - - - - - - - - - - - -
> >
> > Questions:
> > 1. Do WebSphere transaction timeouts (default=120 secs) get suspended
> > across
> > calls to innerMethod() because of
> TransactionAttributeType.NOT_SUPPORTED?
> > 2. Do WebSphere transaction timeouts get suspended across calls to
> > outerMethod() when/if innerService.innerMethod() is invoked?
> >
> > Thanks, in advance for your time and consideration..
> >
> > Tom Rowe
> >
> > --
> > View this message in context:
> >
> http://openjpa.208410.n2.nabble.com/To-TransactionAttributeType-NOT-SUPPORTED-or-not-to-TransactionAttributeType-NOT-SUPPORTED-tp7225877p7225877.html
> > Sent from the OpenJPA Users mailing list archive at Nabble.com.
> >
>
>
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