package org.jboss.seam.ui;
import static org.jboss.seam.ScopeType.STATELESS;
import static org.jboss.seam.annotations.Install.BUILT_IN;
import javax.persistence.EntityManager;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.framework.EntityIdentifier;
import org.jboss.seam.framework.Identifier;
/**
* Stores entity identifiers under a key, which can be used on a page
*
* @author Pete Muir
*/
@Name("org.jboss.seam.ui.entityLoader")
@Install(precedence=BUILT_IN, value=true, classDependencies="javax.persistence.EntityManager")
@Scope(STATELESS)
public class JpaEntityLoader extends AbstractEntityLoader<EntityManager>
{
@Override
protected Identifier createIdentifier(Object entity)
{
return new EntityIdentifier(entity, getPersistenceContext());
}
@Override
protected String getPersistenceContextName()
{
return "entityManager";
}
@Override
public void validate()
{
if (getPersistenceContext() == null)
{
throw new IllegalStateException("Unable to access a persistence context. You must either have a SMPC called entityManager or configure one in components.xml");
}
}
public EntityManager getEntityManager()
{
return getPersistenceContext();
}
public void setEntityManager(EntityManager entityManager)
{
setPersistenceContext(entityManager);
}
}