UPDATE Entity 'by mistake'?

[ulrike]

I've detected a curious behavior in my application.

I fetch an object from the database using

MyObject obj = entityManager.find(MyObject.class, id);

Then I change some field values.

I never merge/persist this object and I never call flush(), but the changes go to the database anyway. (Yes, I want to go these changes to the database in this case, but there are some tables I should never update and I want to prevent updating/inserting 'by mistake'.)

My EntityManager is injected via @In and calling entityManager.getFlushMode() returns AUTO. Can I change this to MANUAL for the whole application?

components.xml:

<persistence:managed-persistence-context name="entityManager" auto-create="true"
                persistence-unit-jndi-name="java:/myserviceEntityManagerFactory" />

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="myservice">
      <provider>org.hibernate.ejb.HibernatePersistence</provider>
      <jta-data-source>java:/myserviceDatasource</jta-data-source>
      <properties>
         <property name="hibernate.dialect" value="org.hibernate.dialect.OracleDialect"/>
         <property name="hibernate.hbm2ddl.auto" value="validate"/>
         <property name="hibernate.show_sql" value="true"/>
         <property name="hibernate.format_sql" value="true"/>

         <property name="jboss.entity.manager.factory.jndi.name"
                   value="java:/myserviceEntityManagerFactory"/>
         <property name="hibernate.default_schema" value="psoft"/>
         
         <property name="hibernate.connection.autocommit" value="false"/>
         
      </properties>
   </persistence-unit>
</persistence>

[nickarls]

You could map them as read-only while you wait for 2.1.0.BETA1

[ulrike]

Like that?

@Entity
@Name("myObject")
@Table(name="MYOBJECT")
@ReadOnly
public class MyObject implements Serializable {
...

I tried it, but it had no effect.
I expected an Exception but got an UPDATE...

[nickarls]

Hmm, perhaps there is no JPA-clean way. Tried

@org.hibernate.annotations.Entity(mutable=false)

or setting update to false on all columns?

[ulrike]

@org.hibernate.annotations.Entity(mutable=false) works great but very 'silent'. ;)

If I purposly try merging the object - it does... nothing... not even throwing an Exception. Nevertheless I can live with this till 2.1.0.BETA1. ;) Counting the days...

Thank you for your efforts!