Annotation Type UniqueConstraint


  • @Target({})
    @Retention(RUNTIME)
    public @interface UniqueConstraint
    Specifies that a unique constraint is to be included in the generated DDL for a primary or secondary table.
        Example:
        @Entity
        @Table(
            name="EMPLOYEE", 
            uniqueConstraints=
                @UniqueConstraint(columnNames={"EMP_ID", "EMP_NAME"})
        )
        public class Employee { ... }
     
    Since:
    1.0
    • Required Element Summary

      Required Elements 
      Modifier and Type Required Element Description
      String[] columnNames
      (Required) An array of the column names that make up the constraint.
    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      String name
      (Optional) Constraint name.
    • Element Detail

      • columnNames

        String[] columnNames
        (Required) An array of the column names that make up the constraint.
      • name

        String name
        (Optional) Constraint name. A provider-chosen name will be chosen if a name is not specified.
        Since:
        2.0
        Default:
        ""