[jboss-user] [JBoss Seam] - Scope of EntityManager
dapeng
do-not-reply at jboss.com
Wed Dec 12 06:07:14 EST 2007
What is the default scope of a jpa entity manager in Seam? My experience is that it is CONVERSATION. Is that correct?
I often get an error message on the console that the transaction can not be started, when I access a page, which contains no component reference in the cnversation scope. The reason is somehow the component lookup for entityManager in default scope (CONVERSATION) fails, because no conversation has started yet. As soon as a conversation has been started in my application, the exception disappears.
java.lang.IllegalStateException: Could not start transaction
| at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:571
| )
| at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsBeforePhase(Se
| amPhaseListener.java:307)
| at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseList
| ener.java:142)
| at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.ja
| va:116)
| at org.ajax4jsf.resource.ResourceLifecycle.invokePhaseListener(ResourceL
| ifecycle.java:201)
| at org.ajax4jsf.resource.ResourceLifecycle.processPhaseListeners(Resourc
| eLifecycle.java:177)
| at org.ajax4jsf.resource.ResourceLifecycle.send(ResourceLifecycle.java:1
| 47)
| at org.ajax4jsf.resource.InternetResourceService.load(InternetResourceSe
| rvice.java:336)
| at org.ajax4jsf.cache.LRUMapCache.load(LRUMapCache.java:116)
| at org.ajax4jsf.cache.LRUMapCache.get(LRUMapCache.java:87)
| at org.ajax4jsf.resource.InternetResourceService.serviceResource(Interne
| tResourceService.java:198)
| at org.ajax4jsf.resource.InternetResourceService.serviceResource(Interne
| tResourceService.java:144)
| at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:265)
| at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
| at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
| .java:69)
| at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
| at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
| .java:69)
| at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
| icationFilterChain.java:235)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
| ilterChain.java:206)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
| lter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
| icationFilterChain.java:235)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
| ilterChain.java:206)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
| alve.java:230)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
| alve.java:175)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
| yAssociationValve.java:179)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
| e.java:84)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
| ava:127)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
| ava:102)
| at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedC
| onnectionValve.java:157)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
| ve.java:109)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
| a:262)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
| :844)
| at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
| ss(Http11Protocol.java:583)
| at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
| 6)
| at java.lang.Thread.run(Thread.java:595)
| Caused by: org.springframework.transaction.CannotCreateTransactionException: Cou
| ld not open JPA EntityManager for transaction; nested exception is java.lang.Ill
| egalArgumentException: Instance must not be null
| at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransact
| ionManager.java:374)
| at org.springframework.transaction.support.AbstractPlatformTransactionMa
| nager.getTransaction(AbstractPlatformTransactionManager.java:350)
| at org.jboss.seam.ioc.spring.SpringTransaction.begin(SpringTransaction.j
| ava:74)
| at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:566
| )
| ... 35 more
| Caused by: java.lang.IllegalArgumentException: Instance must not be null
| at org.springframework.util.Assert.notNull(Assert.java:112)
| at org.springframework.util.ClassUtils.getAllInterfaces(ClassUtils.java:
| 703)
| at org.jboss.seam.ioc.spring.SeamManagedEntityManagerFactory.createEntit
| yManager(SeamManagedEntityManagerFactory.java:61)
| at org.springframework.orm.jpa.JpaTransactionManager.createEntityManager
| ForTransaction(JpaTransactionManager.java:391)
| at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransact
| ionManager.java:315)
| ... 38 more
| 12:02:31,191 ERROR [SeamPhaseListener] swallowing exception
| java.lang.IllegalStateException: Could not start transaction
| at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:571
| )
| at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsBeforePhase(Se
| amPhaseListener.java:307)
| at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseList
| ener.java:142)
| at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.ja
| va:116)
| at org.ajax4jsf.resource.ResourceLifecycle.invokePhaseListener(ResourceL
| ifecycle.java:201)
| at org.ajax4jsf.resource.ResourceLifecycle.processPhaseListeners(Resourc
| eLifecycle.java:177)
| at org.ajax4jsf.resource.ResourceLifecycle.send(ResourceLifecycle.java:1
| 47)
| at org.ajax4jsf.resource.InternetResourceService.load(InternetResourceSe
| rvice.java:336)
| at org.ajax4jsf.cache.LRUMapCache.load(LRUMapCache.java:116)
| at org.ajax4jsf.cache.LRUMapCache.get(LRUMapCache.java:87)
| at org.ajax4jsf.resource.InternetResourceService.serviceResource(Interne
| tResourceService.java:198)
| at org.ajax4jsf.resource.InternetResourceService.serviceResource(Interne
| tResourceService.java:144)
| at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:265)
| at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
| at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
| .java:69)
| at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
| at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
| .java:69)
| at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
| icationFilterChain.java:235)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
| ilterChain.java:206)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
| lter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
| icationFilterChain.java:235)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
| ilterChain.java:206)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
| alve.java:230)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
| alve.java:175)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
| yAssociationValve.java:179)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
| e.java:84)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
| ava:127)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
| ava:102)
| at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedC
| onnectionValve.java:157)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
| ve.java:109)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
| a:262)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
| :844)
| at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
| ss(Http11Protocol.java:583)
| at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
| 6)
| at java.lang.Thread.run(Thread.java:595)
| Caused by: org.springframework.transaction.CannotCreateTransactionException: Cou
| ld not open JPA EntityManager for transaction; nested exception is java.lang.Ill
| egalArgumentException: Instance must not be null
| at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransact
| ionManager.java:374)
| at org.springframework.transaction.support.AbstractPlatformTransactionMa
| nager.getTransaction(AbstractPlatformTransactionManager.java:350)
| at org.jboss.seam.ioc.spring.SpringTransaction.begin(SpringTransaction.j
| ava:74)
| at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:566
| )
| ... 35 more
| Caused by: java.lang.IllegalArgumentException: Instance must not be null
| at org.springframework.util.Assert.notNull(Assert.java:112)
| at org.springframework.util.ClassUtils.getAllInterfaces(ClassUtils.java:
| 703)
| at org.jboss.seam.ioc.spring.SeamManagedEntityManagerFactory.createEntit
| yManager(SeamManagedEntityManagerFactory.java:61)
| at org.springframework.orm.jpa.JpaTransactionManager.createEntityManager
| ForTransaction(JpaTransactionManager.java:391)
| at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransact
| ionManager.java:315)
| ... 38 more
I am using Seam together with Spring. application-context.xml
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
| <!-- <property name="dataSource" ref="dataSource"/> -->
| <property name="persistenceUnitName" value="asap"/>
| </bean>
|
| <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
| <!-- Be sure to specify the SeamManagedEntityManagerFactory since that will manage the EM that will be
| beginning and ending transactions.-->
| <property name="entityManagerFactory" ref="seamEntityManagerFactory" />
| </bean>
|
| <tx:annotation-driven proxy-target-class="true" />
|
| <seam:configure-scopes />
| <bean
| class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor">
| <!-- Because we have multiple EntityManagerFactories in this applicaitonContext identify the
| SeamManagedEntityManagerFactory as the default -->
| <property name="defaultPersistenceUnitName" value="persistenceContextName" />
| </bean>
|
| <!-- EMF that wraps a Seam Managed EM instance for use in Spring -->
| <bean id="seamEntityManagerFactory" class="org.jboss.seam.ioc.spring.SeamManagedEntityManagerFactoryBean">
| <!-- The Seam managed-persistence-context component name. -->
| <property name="persistenceContextName" value="entityManager" />
| <!-- Optionally provide a unit name. If not specified the default would be the persistenceContextName -->
| <property name="persistenceUnitName" value="persistenceContextName" />
| </bean>
components.xml
<core:init debug="true" />
|
| <core:manager conversation-timeout="120000"
| concurrent-request-timeout="500" conversation-id-parameter="cid" />
|
| <persistence:managed-persistence-context name="entityManager"
| auto-create="true" entity-manager-factory="#{entityManagerFactory}" />
|
|
| <spring:context-loader>
| <spring:config-locations>
| <value>classpath:/META-INF/web-context.xml</value>
| <value>classpath:/META-INF/core-custom-context.xml</value>
| <value>classpath:/META-INF/application-context.xml</value>
| </spring:config-locations>
| </spring:context-loader>
|
| <spring:spring-transaction
| platform-transaction-manager="#{transactionManager}" />
|
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