Package javax.persistence

Annotation Type Index

  • @Target({})
@Retention(RUNTIME)
public @interface Index
    Used in schema generation to specify creation of an index.

    Note that it is not necessary to specify an index for a primary key, as the primary key index will be created automatically.

    The syntax of the columnList element is a column_list, as follows: 

        column::= index_column [,index_column]*
    index_column::= column_name [ASC | DESC]

    If ASC or DESC is not specified, ASC (ascending order) is assumed.

    See Also:
    Table, SecondaryTable, CollectionTable, JoinTable, TableGenerator
    Since:
    2.1

    • Required Element Summary

      Required Elements 
      Modifier and Type Required Element Description
      java.lang.String columnList
      (Required) The names of the columns to be included in the index, in order.

    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      java.lang.String name
      (Optional) The name of the index; defaults to a provider-generated name.
      boolean unique
      (Optional) Whether the index is unique.

    • Element Detail

      • columnList

        java.lang.String columnList
        (Required) The names of the columns to be included in the index, in order.

      • name

        java.lang.String name
        (Optional) The name of the index; defaults to a provider-generated name.
        Default:
        ""

      • unique

        boolean unique
        (Optional) Whether the index is unique.
        Default:
        false