[jboss-user] [JBoss Seam] - best way of using application scope constants?

In my application there are a lot of application scope values (read most, very seldom update/insert/delete), things like all Zip Codes in a country, names of all agents, etc. They resides in various different tables in the database. I want to _always_ cache them in the memory, once and for all, so that other stateful beans can use these values without creating new instances of these data wrapper class. For example, | @Stateful | @Name("fooAction") | @Scope(CONVERSATION) | public class FooAction implements Serializable, Foo{ | | //here i want to load the in-memory data like all zipcodes.... | private SomeBean applicationScopeValues; | ..... | | } | | What is the best way? If I use bijection, I would need to create a stateful bean (or stateless, if the data is 100% read-only), annotate the application scope, and then in this bean, do things like: | | @Stateful | @Scope(APPLICATION) | @Name("dataStore") | public class DataStoreImpl implements Serializable, DataStore{ | | //how do I get reference of this list from other action beans if I use | // use the @Out here? | private List<Zipcode> allZipcodes; | | @Create | public void findAllZipcodes(){ | String query ="select z from Zipcode z"; | this.allZipcodes = entityManager.createQuery(query).getResultList(); | } | | //getters and setters | } | | Then in the FooAction class, I would need to do: | @In(create=true) private DataStore dataStore; | Am I doing right this way? Can I avoid creating multiple instances of the DataStore this way? Any better options? Thanks very much in advance!! Regards, Ellen View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4058257#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...