hibernate - How to check if passed in parameter is contained in list in JPA? -

hibernate - How to check if passed in parameter is contained in list in JPA? -

i have next named query,

select b bbc b :sd fellow member of b.sda

sda sd=new sda();

and calling em.createnamedquery("myquery").setparameter("sd",sd);

but returning no results.

do set fields in sd? think sd parameter compared sda collection calling equals() on each element. so, first thing should have sda#equals() implemented, , should homecoming true param pass in query (i suppose not total code, , set values sd).

hibernate jpa