Module eclipselink
Package org.eclipse.persistence.annotations

Annotation Interface ExistenceChecking

@Target(TYPE) @Retention(RUNTIME) public @interface ExistenceChecking
The ExistenceChecking annotation is used to specify the type of checking EclipseLink should use when determining if an entity is new or existing. It is specifically used on a merge() operation to determine if only the cache should be used to determine if an object exists, or the object should be read (from the database or cache). By default, the object is read.

An existence-checking specification is supported on an Entity or MappedSuperclass annotation.

See Also:
Author:
Guy Pelletier

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    ExistenceType
    value
    Set the existence check for determining if an insert or update should occur for an object.

  • Element Details

    • value

      ExistenceType value
      Set the existence check for determining if an insert or update should occur for an object.
      Default:
      CHECK_CACHE