Package org.eclipse.persistence.annotations

Enum ExistenceType

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<ExistenceType>
    public enum ExistenceType
extends java.lang.Enum<ExistenceType>
    An enum that is used within the ExistenceChecking annotation.
    See Also:
    ExistenceChecking, DoesExistQuery
    Author:
    Guy Pelletier
    Since:
    EclipseLink 1.0

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      ASSUME_EXISTENCE
      Assume that if the objects primary key does not include null then it must exist.
      ASSUME_NON_EXISTENCE
      Assume that the object does not exist.
      CHECK_CACHE
      Assume that if the objects primary key does not include null and it is in the cache, then it must exist.
      CHECK_DATABASE
      Perform does exist check on the database.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static ExistenceType valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static ExistenceType[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.

      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Enum Constant Detail

      • CHECK_CACHE

        public static final ExistenceType CHECK_CACHE
        Assume that if the objects primary key does not include null and it is in the cache, then it must exist.

      • CHECK_DATABASE

        public static final ExistenceType CHECK_DATABASE
        Perform does exist check on the database.

      • ASSUME_EXISTENCE

        public static final ExistenceType ASSUME_EXISTENCE
        Assume that if the objects primary key does not include null then it must exist. This may be used if the application guarantees or does not care about the existence check.

      • ASSUME_NON_EXISTENCE

        public static final ExistenceType ASSUME_NON_EXISTENCE
        Assume that the object does not exist. This may be used if the application guarantees or does not care about the existence check. This will always force an insert to be called.

    • Method Detail

      • values

        public static ExistenceType[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (ExistenceType c : ExistenceType.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static ExistenceType valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null