Package javax.persistence

Annotation Interface NamedQuery

@Target(TYPE) @Retention(RUNTIME) public @interface NamedQuery
Specifies a static, named query in the Java Persistence query language. Query names are scoped to the persistence unit. The NamedQuery annotation can be applied to an entity or mapped superclass.

The following is an example of the definition of a named query in the Java Persistence query language: 

    @NamedQuery(
            name="findAllCustomersWithName",
            query="SELECT c FROM Customer c WHERE c.name LIKE :custName"
    )

The following is an example of the use of a named query: 

    @PersistenceContext
    public EntityManager em;
    ...
    customers = em.createNamedQuery("findAllCustomersWithName")
            .setParameter("custName", "Smith")
            .getResultList();
Since:
Java Persistence 1.0

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    String
    name
    (Required) The name used to refer to the query with the EntityManager methods that create query objects.
    String
    query
    (Required) The query string in the Java Persistence query language.

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    QueryHint[]
    hints
    (Optional) Query properties and hints.
    LockModeType
    lockMode
    (Optional) The lock mode type to use in query execution.

  • Element Details

    • name

      String name
      (Required) The name used to refer to the query with the EntityManager methods that create query objects.

    • query

      String query
      (Required) The query string in the Java Persistence query language.

    • lockMode

      LockModeType lockMode
      (Optional) The lock mode type to use in query execution. If a lockMode other than LockModeType.NONE is specified, the query must be executed in a transaction and the persistence context joined to the transaction.
      Since:
      Java Persistence 2.0
      Default:
      NONE

    • hints

      QueryHint[] hints
      (Optional) Query properties and hints. May include vendor-specific query hints.
      Default:
      {}