[jboss-user] [JBoss Seam] - Re: Backing a selectOneMenu with a Collection

[fissy101]

Thanks Mars1412, the continent example did help. I was missing the schema definition for persistence, very obvious now that I look at my last error message again.

For anyone who is having a similar problem, my persistence.xml is now:

  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <persistence>
  |     <persistence-unit name="MovieDataSource">
  |         <provider>
  |             org.hibernate.ejb.HibernatePersistence
  |         </provider>
  |         <jta-data-source>
  |             java:/MovieDataSource
  |         </jta-data-source>
  |         <properties>
  |             <property name="jboss.entity.manager.factory.jndi.name" value="java:/EntityManagerFactories/em"/>
  |             <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
  |             <property name="hibernate.hbm2ddl.auto" value="create-drop" />
  |         </properties>
  |     </persistence-unit>
  | </persistence>
  | 
my components.xml is:

  | <?xml version="1.0" encoding="UTF-8"?>
  | <components xmlns="http://jboss.com/products/seam/components"
  |             xmlns:core="http://jboss.com/products/seam/core"
  |             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |             xmlns:persistence="http://jboss.com/products/seam/persistence"
  |             xsi:schemaLocation=
  |               "http://jboss.com/products/seam/core 
  |                http://jboss.com/products/seam/core-2.0.xsd
  |                http://jboss.com/products/seam/components 
  |                http://jboss.com/products/seam/components-2.0.xsd
  |                http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd">
  | 
  |   <core:init jndi-pattern="moviedb/#{ejbName}/local" debug="true"/>
  | 
  |   <core:manager conversation-timeout="120000"/>
  |   
  |     <persistence:managed-persistence-context name="em" 
  |                                   auto-create="true"
  |                    persistence-unit-jndi-name="java:/EntityManagerFactories/em"/>
  |                    
  |     <component name="org.jboss.seam.ui.EntityConverter">
  |         <property name="entityManager">#{em}</property>
  |     </component>
  | 
  | </components>
  | 

I think the entityConverter Pete said I needed to use expects an entity manager to be injected by seam and named entityManager. I have called mine em so I don't have to change too much code, but this means the last component is needed to join the names together.

Thanks all for your help,
Dave


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