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Subject: RE: CXF DOSGI and transactions
Date: Wed, 16 Nov 2011 15:29:26 +0100
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From: "De Backer Frederik (DBB)" <Frederik.DeBacker@dexia.com>
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Hi,

As far as I can tell, Aries doesn't use AOP or CGLIB to proxy the
service. Instead they use an interceptor mechanism: a Java class that
contains methods to define the behaviour to be executed before and after
the service invocation is done.=20

Kr,

Frederik.  =20

-----Original Message-----
From: Sergey Beryozkin [mailto:sberyozkin@gmail.com]=20
Sent: woensdag 16 november 2011 14:15
To: users@cxf.apache.org
Subject: Re: CXF DOSGI and transactions

Hi
On 16/11/11 11:20, De Backer Frederik (DBB) wrote:
> Hello,
> I have installed the latest single bundle release of CXF DOSGI in=20
> Apache Aries 0.3. I have played around a bit with it and it works ok=20
> to remotely expose a service (see blueprint definition below).=20
> However, when I add a transaction attribute on the bean definition (in

> comment below), the service is not exposed anymore. The purpose is not

> to do transaction propagation from client to service but just to start

> a transaction when the service method is invoked.
> <service interface=3D"dexia.osgipoc.sedm3.service.BankService"
> ref=3D"bankServiceBean">
> <service-properties>
> <entry key=3D"service.exported.interfaces" value=3D"*" /> <entry=20
> key=3D"service.exported.configs" value=3D"org.apache.cxf.ws" /> <entry=20
> key=3D"org.apache.cxf.ws.address"
> value=3D"http://localhost:9090/bankservice" /> </service-properties>=20
> </service> <bean id=3D"bankServiceBean"
> class=3D"dexia.osgipoc.sedm3.service.BankServiceImpl"
> activation=3D"lazy">
> <!-- tx:transaction method=3D"*" value=3D"Required" /--> <property=20
> name=3D"actorService" ref=3D"actorServiceRef" /> <property=20
> name=3D"accountService" ref=3D"accountServiceRef" /> </bean> In the=20
> console log I see (NULL for EndpointDescription):
> 16-nov-2011 10:41:09
> org.apache.cxf.dosgi.topologymanager.TopologyManager$2 run
> INFO: TopologyManager: export sucessful Endpoints:[Endpoint=20
> Desctiption for Serv iceReference=20
> {dexia.osgipoc.sedm3.service.BankService}=3D{osgi.service.blueprint.c
> ompname=3DbankServiceBean,
> org.apache.cxf.ws.address=3Dhttp://localhost:9090/bankser
> vice, service.exported.interfaces=3D*,
> service.exported.configs=3Dorg.apache.cxf.ws,
> service.id=3D107}
> *** EndpointDescription: ****
> --->  NULL<----
> *** Exception: null ****
> *** isClosed : false ****
> ]
>

It is most likely a bug to do with DOSGi CXF not able to get to the
actual interface class given that Aries must be proxifying it..

CXF has utilities to deal with such cases but I'm wondering, how the
proxification is done in this case, if Spring AOP or CGLIB is used then
a fix may be applied, can you create a simple test case somehow ?

As a workaround, please try experimenting with forcing CGLIB be used

Cheers, Sergey

While in the case that it works correctly, I see:
> INFO: TopologyManager: export sucessful Endpoints:[Endpoint=20
> Desctiption for Serv iceReference=20
> {dexia.osgipoc.sedm3.service.BankService}=3D{osgi.service.blueprint.c
> ompname=3DbankServiceBean,
> org.apache.cxf.ws.address=3Dhttp://localhost:9090/bankser
> vice, service.exported.interfaces=3D*,
> service.exported.configs=3Dorg.apache.cxf.ws,
> service.id=3D111}
> *** EndpointDescription: ****
> endpoint.framework.uuid =3D>  c39d5ef1-ca55-4141-9901-d976b0e59ed1
> endpoint.id =3D>  http://localhost:9090/bankservice=20
> endpoint.package.version.dexia.osgipoc.sedm3.service =3D> =20
> 0.0.1.SNAPSHOT endpoint.service.id =3D>  111 objectClass =3D> =20
> [Ljava.lang.String;@c67f69 org.apache.cxf.ws.address =3D> =20
> http://localhost:9090/bankservice osgi.service.blueprint.compname =3D> =20
> bankServiceBean service.imported =3D>  true service.imported.configs =3D>

> [Ljava.lang.String;@1d6e4a4 service.intents =3D> =20
> [Ljava.lang.String;@13ceab3
> *** Exception: null ****
> *** isClosed : false ****
> ]
> Thx a lot for the support,
> Frederik.
>
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