puntos interesantes en seam_reference-2.1.2.CR1.pdf

29.1.4.5. Character encoding

Sets the character encoding of submitted form data.

This filter is not installed by default and requires an entry in components.xml to enable it:

<web:character-encoding-filter encoding="UTF-16" override-client="true" url-pattern="*.seam"/>

• encoding — The encoding to use.

• override-client — If this is set to true, the request encoding will be set to whatever is specified by encoding no matter whether the request already specifies an encoding or not. If set to false, the request encoding will only be set if the request doesn't already specify an encoding. The default setting is false.

Transactions

Finally, let's talk about transactions. In an EJB3 environment, we recommend the use of a special built-in component for transaction management, that is fully aware of container transactions, and can correctly process transaction success events registered with the Events component. If you don't add this line to your components.xml file, Seam won't know when container-managed transactions end:

<transaction:ejb-transaction/>

29.4.1. Boostrapping Hibernate in Seam

Seam will bootstrap a Hibernate SessionFactory from your hibernate.cfg.xml file if you install a built-in component:

<persistence:hibernate-session-factory name="hibernateSessionFactory"/>

You will also need to configure a managed session if you want a Seam managed Hibernate Session to be available via injection.

<persistence:managed-hibernate-session name="hibernateSession"

                            session-factory="#{hibernateSessionFactory}"/>

29.4.2. Boostrapping JPA in Seam

Seam will bootstrap a JPA EntityManagerFactory from your persistence.xml file if you install this built-in component:

<persistence:entity-manager-factory name="entityManagerFactory"/>

You will also need to configure a managed persistence context if you want a Seam managed JPA EntityManager to be available via injection.

<persistence:managed-persistence-context name="entityManager"

                            entity-manager-factory="#{entityManagerFactory}"/>