Seam 2.0.0.GA
Hibernate 3.2.4.sp1
MySQL 5.0.16
I am using EJB3/JPA persistence and am having trouble with a manually flushed
transaction. Even after a call to em.flush(), the data is not visible to an
external db client -- it seems that even though manually flushed, the
transaction is not committed until after the outer backing bean action method
returns.
I need to ensure that my pending changes to the db are commited to the db so
that I can invoke another application which uses that data from the database --
all before actually returning from the backing bean action.
I've tried to call em.getTransaction().commit(), but get a runtime error:
| Caused by: javax.faces.el.EvaluationException:
java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()
|
Is it possible to commit the transaction without returning from an action
method?
Thanks!
Report.java:
| @Begin(flushMode=FlushModeType.MANUAL, join=true)
| public void wire() {
| // nop - placeholder function here only to allow manual
flushing config
| }
| ...
| public void generate () {
| entityManager.persist(foo);
| entityManager.persist(bar);
| ...
| entityManager.flush();
| log.debug("committed"); <-----------
|
If I set breakpoint after the flush, I cannot see the new data persisted to the
database from an external client until I exit all the way back out of the top
level action function (report.generate()).
Report.page.xml (the page that invokes the backing bean action):
| <?xml version="1.0" encoding="UTF-8"?>
| <page xmlns="http://jboss.com/products/seam/pages";
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
| xsi:schemaLocation="http://jboss.com/products/seam/pages
http://jboss.com/products/seam/pages-2.0.xsd";>
| <!-- wire up manually flushed transaction for reports -->
| <action execute="#{report.wire}"/>
| </page>
|
|
persistence.xml:
| <?xml version="1.0" encoding="UTF-8"?>
| <!-- Persistence deployment descriptor for dev profile -->
| <persistence xmlns="http://java.sun.com/xml/ns/persistence";
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
| xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";
| version="1.0">
|
| <persistence-unit name="myproject">
| <provider>org.hibernate.ejb.HibernatePersistence</provider>
| <jta-data-source>java:/myprojectDatasource</jta-data-source>
| <properties>
| <property name="hibernate.hbm2ddl.auto" value="update"/>
| <property name="hibernate.cache.use_query_cache" value="true"/>
| <property name="hibernate.show_sql" value="false"/>
| <property name="jboss.entity.manager.factory.jndi.name"
value="java:/myprojectEntityManagerFactory"/>
| </properties>
| </persistence-unit>
| </persistence>
|
components.xml:
| <persistence:managed-persistence-context name="entityManager"
| auto-create="true"
|
persistence-unit-jndi-name="java:/myprojectEntityManagerFactory"
|
myproject-ds.xml:
| <?xml version="1.0" encoding="UTF-8"?>
| <datasources>
|
| <local-tx-datasource>
| <jndi-name>myprojectDatasource</jndi-name>
| <connection-url>jdbc:mysql:///myproject</connection-url>
| <driver-class>com.mysql.jdbc.Driver</driver-class>
| <user-name>myproject</user-name>
| <password>myproject</password>
| </local-tx-datasource>
|
| </datasources>
|
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