java - EJB3 and EntityManagerMap at Runtime -

i need make ejb3 stateful creates map of entitymanager. want use manage multy database dynamically created @ runtime. define 1 default persistence unit in persistence.xml deployment descriptor.

my persistance.xml:

(i used jboss5 , defined datasource)

   <persistence-unit name="mkyong">       <jta-data-source>java:/mkyong_jtds</jta-data-source>          <properties>             <property name="hibernate.archive.autodetection" value="class, hbm" />             <property name="hibernate.hbm2ddl.auto" value="create" />             <property name="hibernate.jdbc.batch_size" value="50" />             <property name="hibernate.max_fetch_depth" value="5" />             <property name="hibernate.show_sql " value="true" />             <property name="hibernate.format_sql" value="true" />              <property name="hibernate.dialect" value="org.hibernate.dialect.sqlserverdialect" />             <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.jbosstransactionmanagerlookup"/>          </properties>    </persistence-unit> 

i need create 10 entitymanager, each 1 differs connection ulr , need define specified values @ runtime. want create administrative user interface.

something like:

@persistencecontext(unitname="mkyong") private entitymanager manager;  map<string, entitymanager> entitymanagermap = new hashmap<string, entitymanager>();  entitymanagermap.put("mkyong", manager);  map<string, object> configoverrides = new hashmap<string, object>(); configoverrides.put("hibernate.connection.url", "jdbc:jtds:sqlserver://127.0.0.1:1433/anagrafe"); entitymanagerfactory programmaticemf = persistence.createentitymanagerfactory("mkyong", configoverrides); manager1=programmaticemf.createentitymanager(); entitymanagermap.put("anagrafe", manager1); 

in sample created 2 entitymanager

one real entitymanager created automatically named 'mkyong'.

one entitymanager created @ runtime named 'anagrafe'.

...

if use real entitymanager work fine... create table...it persist..

but if try use new one... dont'work... dont create table , dont store values

why?

no error... no log... dont write on db , dont create tables

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ps: if config 2 persistence-unit inside persistance.xml , use 2 injected entity manager work fine.