OpenEntityManagerInViewFilter not working
Hi @all,
I know that this issue has been posted a bunch of times before, thus before of asking I was googling and searching in this forum for this topic without success in terms of finding something useful for solving my issue. I have decided to ask because probably my problem is due to a configuration mistake that I am not able to realize by myself.
So this is my scenario: Spring MVC 3, Spring Web Flow 2, JPA 2, Hibernate 3 and Spring Data. I use both MVC and SWF depending on the functionality, there are some complex wizards that with SWF are easier to implement. I am also using the AOP Spring's transactions manager.
This is my configuration:
- In the web.xml file I am trying to set up the OpenEntityManagerInViewFilter so as I have read this is the filter to use for implementing the open session in view pattern:
Code:<filter> <filter-name>oemInViewFilter</filter-name> <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class> <init-param> <param-name>entityManagerFactoryBeanName</param-name> <param-value>entityManagerFactory</param-value> </init-param> </filter> <filter-mapping> <filter-name>oemInViewFilter</filter-name> <url-pattern>/</url-pattern> </filter-mapping>
- At the same time, in dispatcher-servlet.xml I am setting up the PersistenceContext in flowScope:
Code:<flow:flow-executor id="flowExecutor" flow-registry="flowRegistry"> <flow:flow-execution-listeners> <flow:listener ref="jpaFlowExecutionListener" /> </flow:flow-execution-listeners> </flow:flow-executor> <bean id="jpaFlowExecutionListener" class="org.springframework.webflow.persistence.JpaFlowExecutionListener"> <constructor-arg ref="entityManagerFactory" /> <constructor-arg ref="transactionManager" /> </bean>
- Transaction management is configured this way:
Code:<!-- To conduct transactions, we declare a JPA transaction manager that collaborates with the JPA EntityManager produced by the factory --> <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <!-- Reference to the entity manager factory defined in dal-context.xml --> <property name="entityManagerFactory" ref="entityManagerFactory" /> </bean> <!-- Declaration of an AOP advice that defines transactional policies (beans that should be advised), referencing the transaction manager previously declared --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="find*(..)" propagation="SUPPORTS" isolation="DEFAULT" read-only="true" /> <tx:method name="save*(..)" propagation="REQUIRED" isolation="DEFAULT" /> <tx:method name="delete*(..)" propagation="REQUIRED" isolation="DEFAULT" /> <tx:method name="*" propagation="REQUIRED" isolation="DEFAULT" /> </tx:attributes> </tx:advice> <!-- Definition of the pointcut for the previously declared advice by using and AspectJ expression --> <aop:config> <!-- AspectJ pointcut expression --> <aop:pointcut id="blPointCut" expression="execution(public * ie.i2e2.greenmode.bl.bo.impl.*.*(..))" /> <!-- Maps the pointcut to the transaction's advice --> <aop:advisor advice-ref="txAdvice" pointcut-ref="blPointCut" /> </aop:config>
- And finally, database access and entity manager factory are configured like this;
FlowScoped PersistenceContext is working fine inside web flows, so I don't get a LazyInitializationException when calling lazy initialized objects. I would like to have the same behavior in pages rendered from a standard Spring MVC controller.Code:<!-- JDBC based datasource definition (TODO: should be changed to JNDI datasource) --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="org.hsqldb.jdbcDriver" /> <property name="url" value="jdbc:hsqldb:mem:gmtest" /> <property name="username" value="sa" /> <property name="password" value="" /> </bean> <!-- Provide specifics about the particular JPA implementation to use, in this case Hibernate --> <bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="database" value="HSQL" /> <property name="showSql" value="false"/> <property name="generateDdl" value="true"/> <property name="databasePlatform" value="org.hibernate.dialect.HSQLDialect" /> </bean> <!-- Configuration of a JPA container-managed entity manager, wired with datasource and vendor adapter properties --> <bean id="entityManagerFactory" class= "org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <!-- Reference eto the previously defined datasource --> <property name="dataSource" ref="dataSource" /> <!-- Reference eto the previously defined JPA vendor adapter --> <property name="jpaVendorAdapter" ref="jpaVendorAdapter" /> <!-- Spring will try to automatically register DAO and domain objects to into a default persistence unit of JPA, acording to the value defined --> <property name="packagesToScan" value="ie.i2e2.greenmode.dal" /> </bean> <!-- Adds an advisor to any bean that’s annotated with @Repository so that any platform-specific exceptions are caught and then rethrown as one of Spring’s unchecked data access exceptions --> <bean class="org.springframework.orm.hibernate3.HibernateExceptionTranslator"/>
Isn't it working for me because I am mixing MVC and SWF? Or maybe the reason is that I am using a transaction manager instead of a the EntityManagerFactory directly, that is what the OpenEntityManagerInViewFilter requires for its initialization?
Lots of questions come to my mind and I am driving crazy trying to finde the proper way of configuring my scenario.
Any ideas?
Thanks in advance guys!
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