JPA Change the default Flushmode from AUTO to COMMIT

Question

I tried several ways to change FlushMode to a full application. Is this correct or is there another way to do this?

I do not want to do this pragmatically.

This is what I find as a property, but it does not work.

<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_2_0.xsd" version="2.0"> <persistence-unit name="myPU"> <properties> ... <property name="hibernate.connection.autocommit" value="false"/> <!-- Also tried this: --> <property name="org.hibernate.FlushMode" value="commit"/> ... </properties> </persistence-unit> </persistence> 

Update:

I created the class as described in the zxcf link, but I cannot figure out how to add this construct to my persistence.xml.

 <property name="jpaDialect"> <bean class="test.jpa.vendor.HibernateJpaDialect"> <property name="flushMode" value="MANUAL"/> </bean> </property> 

Answer 1

try it

 <property name="org.hibernate.flushMode" value="COMMIT"/> 

Testing this in a separate program. I see the changed value of the base Hibernate / EntityManager session from AUTO to COMMIT

Here is my persistence.xml

 <?xml version="1.0" encoding="UTF-8"?> <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_2_0.xsd" version="2.0"> <persistence-unit name="JPATest" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> <class>com.test.TestEntity</class> <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode> <properties> <property name="hibernate.hbm2ddl.auto" value="update"/> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.format_sql" value="true"/> <property name="hibernate.use_sql_comments" value="true"/> <property name="hibernate.cache.use_query_cache" value="true"/> <property name="hibernate.archive.autodetection" value="class, hbm"/> <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/> <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/> <property name="hibernate.connection.username" value="xxx"/> <property name="hibernate.connection.password" value="xxx"/> <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/test?createDatabaseIfNotExist=true"/> <property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"/> <property name="hibernate.cache.provider_configuration" value="classpath:ehcache.xml"></property> <property name="hibernate.use.second.level.cache" value="true"/> <property name="hibernate.cache.region_prefix" value="neutrino.jpa.cache"/> <property name="hibernate.cache.use_query_cache" value="false"/> <property name="hibernate.generate_statistics" value="true"/> <property name="hibernate.jdbc.batch_size" value="10"/> <property name="hibernate.order_updates" value="true"/> <property name="hibernate.order_inserts" value="true"/> <property name="org.hibernate.flushMode" value="COMMIT"/> </persistence-unit> </persistence> 

And this is how I test it

  EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPATest"); EntityManager em = emf.createEntityManager(); Session session = em.unwrap(Session.class); System.out.println("Underlying Hibernate session flushmode ####### "+session.getFlushMode()); System.out.println("EntityManager flushmode ####### "+em.getFlushMode()); 

It gives me

 Underlying Hibernate session flushmode ####### COMMIT EntityManager flushmode ####### COMMIT 

If I omit the property in presistence.xml, I get this

 Underlying Hibernate session flushmode ####### AUTO EntityManager flushmode ####### AUTO