Konrad, By using a global alternative, you're effectively making what is in beans.xml ignored.
John On Wed, May 10, 2017 at 1:32 PM Instantiation Exception < [email protected]> wrote: > John, > > There is one think which I don't understand: > apache-deltaspike.properties contains different TransactionStrategy > than beans.xml > > * apache-deltaspike.properties contains > > org.apache.deltaspike.jpa.impl.transaction.ContainerManagedTransactionStrategy > * beans.xml contains > > org.apache.deltaspike.jpa.impl.transaction.BeanManagedUserTransactionStrategy > > Isn't it a conflict? > > Best regards, > Konrad > > On Wed, May 10, 2017 at 7:22 PM, John D. Ament <[email protected]> > wrote: > > > Konrad, > > > > Yes, what you're doing should work and actually matches what I do > presently > > in a production environment. If you're using the JTA @Transactional what > > you're doing is what will work for you. > > > > John > > > > On Wed, May 10, 2017 at 1:20 PM Instantiation Exception < > > [email protected]> wrote: > > > > > Mark, John > > > > > > I am not sure if I properly understand so I created demo app with my > > > current configuration: > > > https://github.com/instantiationexception/wildfly-deltaspike-data > > > > > > Generally there are 4 files specific to DeltaSpike Data: > > > > > > * EntityManagerProducer.java > > > * apache-deltaspike.properties > > > * beans.xml > > > > > > My goals are: > > > > > > * Use JTA EntityManager provided by WildFly > > > * Use @Transactional from javax.transaction > > > * Mix CDI and EJB > > > > > > Generally this demo app works. But I am not sure if more complicated > app > > > will work. > > > Is this configuration correct? Are there any unneeded/invalid elements? > > > > > > Best regards, > > > Konrad > > > > > > On Wed, May 10, 2017 at 11:22 AM, Mark Struberg > > <[email protected] > > > > > > > wrote: > > > > > > > Hi Konrad, John! > > > > > > > > Hmm not sure about ContainerManagedTransactionStrategy. > > > > > > > > Look at the code, this is probably not named properly. It is > > essentially > > > a > > > > no-op TransactionStrategy. It delegates through without doing > > something. > > > > > > > > This is useful if you GUARANTEED have a ContainerManagedTransation in > > an > > > > outer level. > > > > E.g. if you have some existing code using DeltaSpike @Transactional, > > and > > > > you know that you ALWAYS have e.g. a @Stateless @WebService calling > > your > > > > code. > > > > We cannot rename this now because otherwise the Alternatives enabled > in > > > > various beans.xml files would go bonkers... > > > > > > > > So if you are about to use e.g. an @ApplicationScoped @Transactional > > bean > > > > without any EJBs involved at all, then you should rather use the > > > > BeanManagedUserTransactionStrategy. > > > > This one leverages the UserTransaction functionality provided by the > > > > server. If a JTA Transaction is already active then it would simply > do > > > > nothing. So in this case it really behaves the same like > > > > ContainerManagedTransactionStrategy. > > > > > > > > But if there is NO active Transaction, then it will use the > > > > UserTransaction API to open a transaction and to commit/rollback on > > this > > > > very layer when leaving the intercepted method. Subsequently invoked > > > > @Transactional CDI beans - and even EJBs! - will just take this open > > > > transaction and work with it. > > > > So this works perfectly fine in cases where you only use CDI but also > > > when > > > > you wildly mix EJBs and CDI beans. > > > > I use this in production for quite a few projects. > > > > > > > > Note that the EntityManagerProducer you need to provide must use a > > > > container provided EntityManagerFactory, otherwise your EntityManager > > > won't > > > > integrate with JTA. > > > > A sample can be found here: > > > > https://github.com/struberg/lightweightEE/blob/jtacdi11/ > > > > backend/src/main/java/de/jaxenter/eesummit/caroline/backend/tools/ > > > > EntityManagerProducer.java#L40 > > > > > > > > > > > > hth. > > > > > > > > LieGrue, > > > > strub > > > > > > > > > Am 09.05.2017 um 01:50 schrieb John D. Ament < > [email protected] > > >: > > > > > > > > > > Konrad, > > > > > > > > > > When you specify globalAlternatives, you don't need to specify > > anything > > > > in > > > > > beans.xml > > > > > > > > > > RE which strategy to use, it'll be the one that matches your > > > transaction > > > > > mode. If you're using plain JTA just use > > > > > ContainerManagedTransactionStrategy. > > > > > > > > > > John > > > > > > > > > > On Mon, May 8, 2017 at 3:56 PM Instantiation Exception < > > > > > [email protected]> wrote: > > > > > > > > > >> John, > > > > >> > > > > >> I want to clarify one thing. When I use > > > > >> META-INF/apache-deltaspike.properties with > > > > >> globalAlternatives.org.apache.deltaspike.jpa.spi.transaction. > > > > >> TransactionStrategy=org.apache.deltaspike.jpa.impl.transaction. > > > > >> ContainerManagedTransactionStrategy > > > > >> > > > > >> should I use alternative in beans.xml? And which one? > > > > >> org.apache.deltaspike.jpa.impl.transaction. > > > > ContainerManagedTransactionStr > > > > >> ategy > > > > >> or > > > > >> org.apache.deltaspike.jpa.impl.transaction. > > > > BeanManagedUserTransactionStrategy > > > > >> > > > > >> Best regards, > > > > >> Konrad > > > > >> > > > > >> On Fri, Mar 3, 2017 at 2:57 PM, John D. Ament < > > [email protected]> > > > > >> wrote: > > > > >> > > > > >>> Ondrej, > > > > >>> > > > > >>> I agree as well. It definitely should be more turn key in this > > > > respect. > > > > >>> > > > > >>> John > > > > >>> > > > > >>> On Fri, Mar 3, 2017 at 8:53 AM Ondrej Mihályi < > > > > [email protected]> > > > > >>> wrote: > > > > >>> > > > > >>>> Hi John, > > > > >>>> > > > > >>>> It sounds to me that DeltaSpike could be improved to make a > > > > >> sophisticated > > > > >>>> guess to infer the default value of this configuration from the > > > > >> container > > > > >>>> it is running in. At least for WildFly and maybe some other > > > containers > > > > >>>> where people report problems. > > > > >>>> > > > > >>>> Just an idea :) > > > > >>>> > > > > >>>> Ondrej > > > > >>>> > > > > >>>> 2017-03-03 12:05 GMT+01:00 John D. Ament <[email protected] > >: > > > > >>>> > > > > >>>>> Hi Konrad, > > > > >>>>> > > > > >>>>> What that's referring to is that you need to create a > > > > >>>>> META-INF/apache-deltaspike.properties and add the following > > line: > > > > >>>>> > > > > >>>>> globalAlternatives.org.apache.deltaspike.jpa.spi.transaction. > > > > >>>>> TransactionStrategy=org.apache.deltaspike.jpa.impl.transaction. > > > > >>>>> ContainerManagedTransactionStrategy > > > > >>>>> > > > > >>>>> I do something similar to you, and it works perfect. I'm > using > > > > >> maven > > > > >>> to > > > > >>>>> build a WAR file, so it just goes in > > > > >>>>> src/main/resources/META-INF/apache-deltaspike.properties > > > > >>>>> > > > > >>>>> John > > > > >>>>> > > > > >>>>> On Fri, Mar 3, 2017 at 3:38 AM Instantiation Exception < > > > > >>>>> [email protected]> wrote: > > > > >>>>> > > > > >>>>>> Hi, > > > > >>>>>> > > > > >>>>>> In my company projects we use WildFly. In the past I tried few > > > > >> times > > > > >>> to > > > > >>>>> use > > > > >>>>>> DeltaSpike Data, but it didn't work. I configured everything > > > > >>> according > > > > >>>> to > > > > >>>>>> documentation. In pure CDI scenario it worked. But when I > > created > > > > >>>>>> @Dependent @Repository and injected it to @Stateless EJB I got > > > some > > > > >>>>>> transaction errors when tried to call EJB methods. In > > > > >> documentation I > > > > >>>> see > > > > >>>>>> warning: > > > > >>>>>> > > > > >>>>>> Some containers do not support BeanManagedUserTransactionStra > > tegy! > > > > >>> As > > > > >>>>> JTA > > > > >>>>>>> has still some portability issues even in Java EE 7, it might > > be > > > > >>>>> required > > > > >>>>>>> that you implement your own TransactionStrategy. We will > think > > > > >>> about > > > > >>>>>>> providing an acceptable solution for this. > > > > >>>>>> > > > > >>>>>> > > > > >>>>>> Is it about WildFly? Is WildFly supported? > > > > >>>>>> > > > > >>>>>> Best regards, > > > > >>>>>> Konrad > > > > >>>>>> > > > > >>>>> > > > > >>>> > > > > >>> > > > > >> > > > > > > > > > > > > > >
