java - Use Spring Security with JPA -

i new spring.

we using spring security feature. database connectivity: eclipselink implementation of jpa. database: mysql

while using spring security, configuration of authentication provider follows,-

<authentication-provider>      <jdbc-user-service id="userdetailsservice" data-source-ref="datasource" />      </authentication-provider> 

but in jpa not define datasource, use persistence unit provider jpa.persistenceprovider.

so how configure authentication provider use jpa database connectivity?

what should data-source-ref field contain use database authentication?

thank in advance.

basically need implement userdetailsservice yourself.

so example have user entity, , userdetailsservice implementation user , convert userdetails object (or entity have implement userdetails).

sample implementation:

public class myuserdetailsservice implements userdetailsservice{      private entitymanager entitymanager;     @persistencecontext     public void setentitymanager(entitymanager newem){         this.entitymanager = newem;     }      public userdetails loaduserbyusername(string username){          // assuming have user class implements userdetails         return entitymanager.createquery("from user username = :username", user.class)                             .setparameter("username", username)                             .getsingleresult();      } } 

and add user spring-security.xml

<authentication-manager>    <authentication-provider user-service-ref="myuserdetailsservice" /> </authentication-manager>