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Continuing Open JPA Transaction using JDBC

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Mukta Vishwanath Divekar
Continuing Open JPA Transaction using JDBC
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Hello,


My project is doing  its initial database operations through OpenJPA. And it has to perform rest of the operations through JDBC.
Data insertion in a table is happening through OpenJPA. But when the same inserted data is queried through JDBC its not available it seems since entire process is a part of single transaction. Is there any way using which we can commit the transaction in between and continue the JDBC operation in a single process.

Instead of creating a new JDBC connection, I tried creating connection like :

EntityManager em = emf.createEntityManager();
broker = (Broker) JPAFacadeHelper.toBroker(em);
JDBCStore store = (JDBCStore)broker.getStoreManager();
conn = store.getConnection();

By providing persistence unit name to 'EntityManagerFactory' but it gave me exception like:

javax.persistence.PersistenceException: Provider error. Provider: org.apache.openjpa.persi
stence.PersistenceProviderImpl
        at javax.persistence.Persistence.createFactory(Persistence.java:176)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:112)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:66)
        at com.symcor.pcbi.irx.icre.fileconversion.ICREDataProcessorImpl.isTableDataMoved(
ICREDataProcessorImpl.java:117)
        at com.symcor.pcbi.irx.icre.fileconversion.ICREFileParserImpl.processICREFiles(ICR
EFileParserImpl.java:285)
        at com.symcor.pcbi.irx.icre.fileconversion.ICREFileParserImpl.process(ICREFilePars
erImpl.java:147)
        at com.symcor.pcbi.irx.icre.fileconversion.ICREFacade.initiateProcess(ICREFacade.j
ava:57)
        at com.symcor.pcbi.irx.icre.timer.IRXTimer.startTimer(IRXTimer.java:135)
        at com.symcor.pcbi.irx.icre.timer.IRXTimer.initializeTimer(IRXTimer.java:104)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja
va:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invo
ke(ReflectionInvocationContext.java:146)
        at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(Reflect
ionInvocationContext.java:129)
        at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.ja
va:67)
        at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer
.java:203)
        at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.
java:165)
        at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxy
Handler.java:211)
        at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler
.java:65)
        at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java
:244)
        at org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHand
ler.java:49)
        at $Proxy45.initializeTimer(Unknown Source)
        at com.symcor.pcbi.irx.icre.servlet.IRXTimerServlet.init(IRXTimerServlet.java:38)
        at javax.servlet.GenericServlet.init(GenericServlet.java:215)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1053)

        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:955)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:403
5)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4338)
        at org.apache.geronimo.tomcat.GeronimoStandardContext.access$201(GeronimoStandardC
ontext.java:60)
        at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(Ger
onimoStandardContext.java:343)
        at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBefore
AfterValve.java:47)
        at org.apache.geronimo.tomcat.GeronimoStandardContext.start(GeronimoStandardContex
t.java:196)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)

        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
        at org.apache.geronimo.tomcat.TomcatContainer.addContext(TomcatContainer.java:355)

        at org.apache.geronimo.tomcat.TomcatContainer$$FastClassByCGLIB$$9370b073.invoke(<
generated>)
        at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
        at org.apache.geronimo.gbean.runtime.FastMethodInvoker.invoke(FastMethodInvoker.ja
va:38)
        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124
)
        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:830)
        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker
.java:35)
        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodIn
terceptor.java:96)
        at org.apache.geronimo.tomcat.TomcatContainer$$EnhancerByCGLIB$$78a8e440.addContex
t(<generated>)
        at org.apache.geronimo.tomcat.TomcatWebAppContext.doStart(TomcatWebAppContext.java
:524)
        at org.apache.geronimo.gbean.runtime.GBeanInstance.createInstance(GBeanInstance.ja
va:996)
        at org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInst
anceState.java:268)
        at org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.j
ava:102)
        at org.apache.geronimo.gbean.runtime.GBeanInstance.start(GBeanInstance.java:539)
        at org.apache.geronimo.gbean.runtime.GBeanDependency.attemptFullStart(GBeanDepende
ncy.java:111)
        at org.apache.geronimo.gbean.runtime.GBeanDependency.addTarget(GBeanDependency.jav
a:146)
        at org.apache.geronimo.gbean.runtime.GBeanDependency$1.running(GBeanDependency.jav
a:120)
        at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.fireRunningEvent(BasicLi
fecycleMonitor.java:176)
        at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.access$300(BasicLifecycl
eMonitor.java:44)
        at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor$RawLifecycleBroadcaster.
fireRunningEvent(BasicLifecycleMonitor.java:254)

Thanks n regards,
Mukta.




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Srinivas Sastry
Re: Continuing Open JPA Transaction using JDBC
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 Hi Mukta,

The below code will work for getting Connection from EntityManager:

DelegatingConnection deConn = (DelegatingConnection)OpenJPAPersistence.*cast
*(getEntityManager()).getConnection();
conn = deConn.getInnermostDelegate();

Directly typecasting to EntityManager (in first statement) without using
DelegatingConnection is throwing ClassCastException (something like
CMPEntityManagerTxScoped cannot be cast to Connection).


On 7/22/08, Mukta Vishwanath Divekar <Mukta_Divekar@...> wrote:

>
>
> Hello,
>
>
> My project is doing  its initial database operations through OpenJPA. And
> it has to perform rest of the operations through JDBC.
> Data insertion in a table is happening through OpenJPA. But when the same
> inserted data is queried through JDBC its not available it seems since
> entire process is a part of single transaction. Is there any way using which
> we can commit the transaction in between and continue the JDBC operation in
> a single process.
>
> Instead of creating a new JDBC connection, I tried creating connection like
> :
>
> EntityManager em = emf.createEntityManager();
> broker = (Broker) JPAFacadeHelper.toBroker(em);
> JDBCStore store = (JDBCStore)broker.getStoreManager();
> conn = store.getConnection();
>
> By providing persistence unit name to 'EntityManagerFactory' but it gave me
> exception like:
>
> javax.persistence.PersistenceException: Provider error. Provider:
> org.apache.openjpa.persi
> stence.PersistenceProviderImpl
>        at javax.persistence.Persistence.createFactory(Persistence.java:176)
>        at
> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:112)
>        at
> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:66)
>        at
> com.symcor.pcbi.irx.icre.fileconversion.ICREDataProcessorImpl.isTableDataMoved(
> ICREDataProcessorImpl.java:117)
>        at
> com.symcor.pcbi.irx.icre.fileconversion.ICREFileParserImpl.processICREFiles(ICR
> EFileParserImpl.java:285)
>        at
> com.symcor.pcbi.irx.icre.fileconversion.ICREFileParserImpl.process(ICREFilePars
> erImpl.java:147)
>        at
> com.symcor.pcbi.irx.icre.fileconversion.ICREFacade.initiateProcess(ICREFacade.j
> ava:57)
>        at
> com.symcor.pcbi.irx.icre.timer.IRXTimer.startTimer(IRXTimer.java:135)
>        at
> com.symcor.pcbi.irx.icre.timer.IRXTimer.initializeTimer(IRXTimer.java:104)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja
> va:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invo
> ke(ReflectionInvocationContext.java:146)
>        at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(Reflect
> ionInvocationContext.java:129)
>        at
> org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.ja
> va:67)
>        at
> org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer
> .java:203)
>        at
> org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.
> java:165)
>        at
> org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxy
> Handler.java:211)
>        at
> org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler
> .java:65)
>        at
> org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java
> :244)
>        at
> org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHand
> ler.java:49)
>        at $Proxy45.initializeTimer(Unknown Source)
>        at
> com.symcor.pcbi.irx.icre.servlet.IRXTimerServlet.init(IRXTimerServlet.java:38)
>        at javax.servlet.GenericServlet.init(GenericServlet.java:215)
>        at
> org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1053)
>
>        at
> org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:955)
>        at
> org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:403
> 5)
>        at
> org.apache.catalina.core.StandardContext.start(StandardContext.java:4338)
>        at
> org.apache.geronimo.tomcat.GeronimoStandardContext.access$201(GeronimoStandardC
> ontext.java:60)
>        at
> org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(Ger
> onimoStandardContext.java:343)
>        at
> org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBefore
> AfterValve.java:47)
>        at
> org.apache.geronimo.tomcat.GeronimoStandardContext.start(GeronimoStandardContex
> t.java:196)
>        at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
>
>        at
> org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
>        at
> org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
>        at
> org.apache.geronimo.tomcat.TomcatContainer.addContext(TomcatContainer.java:355)
>
>        at
> org.apache.geronimo.tomcat.TomcatContainer$$FastClassByCGLIB$$9370b073.invoke(<
> generated>)
>        at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
>        at
> org.apache.geronimo.gbean.runtime.FastMethodInvoker.invoke(FastMethodInvoker.ja
> va:38)
>        at
> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124
> )
>        at
> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:830)
>        at
> org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at
> org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker
> .java:35)
>        at
> org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodIn
> terceptor.java:96)
>        at
> org.apache.geronimo.tomcat.TomcatContainer$$EnhancerByCGLIB$$78a8e440.addContex
> t(<generated>)
>        at
> org.apache.geronimo.tomcat.TomcatWebAppContext.doStart(TomcatWebAppContext.java
> :524)
>        at
> org.apache.geronimo.gbean.runtime.GBeanInstance.createInstance(GBeanInstance.ja
> va:996)
>        at
> org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInst
> anceState.java:268)
>        at
> org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.j
> ava:102)
>        at
> org.apache.geronimo.gbean.runtime.GBeanInstance.start(GBeanInstance.java:539)
>        at
> org.apache.geronimo.gbean.runtime.GBeanDependency.attemptFullStart(GBeanDepende
> ncy.java:111)
>        at
> org.apache.geronimo.gbean.runtime.GBeanDependency.addTarget(GBeanDependency.jav
> a:146)
>        at
> org.apache.geronimo.gbean.runtime.GBeanDependency$1.running(GBeanDependency.jav
> a:120)
>        at
> org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.fireRunningEvent(BasicLi
> fecycleMonitor.java:176)
>        at
> org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.access$300(BasicLifecycl
> eMonitor.java:44)
>        at
> org.apache.geronimo.kernel.basic.BasicLifecycleMonitor$RawLifecycleBroadcaster.
> fireRunningEvent(BasicLifecycleMonitor.java:254)
>
> Thanks n regards,
> Mukta.
>
>
>
>
> **************** CAUTION - Disclaimer *****************
> This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended
> solely
> for the use of the addressee(s). If you are not the intended recipient,
> please
> notify the sender by e-mail and delete the original message. Further, you
> are not
> to copy, disclose, or distribute this e-mail or its contents to any other
> person and
> any such actions are unlawful. This e-mail may contain viruses. Infosys has
> taken
> every reasonable precaution to minimize this risk, but is not liable for
> any damage
> you may sustain as a result of any virus in this e-mail. You should carry
> out your
> own virus checks before opening the e-mail or attachment. Infosys reserves
> the
> right to monitor and review the content of all messages sent to or from
> this e-mail
> address. Messages sent to or from this e-mail address may be stored on the
> Infosys e-mail system.
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