Enum UniqueConstraintSchemaUpdateStrategy

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<UniqueConstraintSchemaUpdateStrategy>

    public enum UniqueConstraintSchemaUpdateStrategy
    extends java.lang.Enum<UniqueConstraintSchemaUpdateStrategy>
    Unique columns and unique keys both use unique constraints in most dialects. SchemaUpdate needs to create these constraints, but DB's support for finding existing constraints is extremely inconsistent. Further, non-explicitly-named unique constraints use randomly generated characters.
    • Enum Constant Detail


        public static final UniqueConstraintSchemaUpdateStrategy DROP_RECREATE_QUIETLY
        Attempt to drop, then (re-)create each unique constraint. Ignore any exceptions thrown. Note that this will require unique keys/constraints to be explicitly named. If Hibernate generates the names (randomly), the drop will not work. DEFAULT

        public static final UniqueConstraintSchemaUpdateStrategy RECREATE_QUIETLY
        Attempt to (re-)create unique constraints, ignoring exceptions thrown (e.g., if the constraint already existed)
    • Method Detail

      • values

        public static UniqueConstraintSchemaUpdateStrategy[] 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 (UniqueConstraintSchemaUpdateStrategy c : UniqueConstraintSchemaUpdateStrategy.values())
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static UniqueConstraintSchemaUpdateStrategy 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.)
        name - the name of the enum constant to be returned.
        the enum constant with the specified name
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null