java - call stored procedure JPA 2.1 Repository with Spring -

i'm trying call stored procedure in mysql call: "searchcontext".

i have tried solution : here , here

but how can entitymanager reference? if i'm using jpa repositories this:

public interface activecontextrepository extends jparepository<activecontext, long> {     activecontext findbyiduser(integer iduser);      } 

i got null pointer when use entitymanager this:

public class contextservice {     @persistencecontext     protected entitymanager entitymanager;      public entitymanager getentitymanager() {         return entitymanager;     }      public integer getcontext(integer iduser, string date, double longitude, double latitude){              storedprocedurequery storedprocedure = entitymanager.createstoredprocedurequery("searchcontext"); } 

or this:

public class contextservice {      @autowired entitymanager entitymanager;      public integer getcontext(integer iduser, string date, double longitude, double latitude){                  storedprocedurequery storedprocedure = entitymanager.createstoredprocedurequery("searchcontext"); } 

i haved tried solution:here precompiler gives me error on jpa repository:

"invalid derived query!no property search found type activecontext"

thank much!

i have resolved problem. making "new() " of class wich have new entity manager...nie injected "autowire" , bean declared in application-config thank