Package javax.persistence

Annotation Interface 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.

Since:
Java Persistence 2.1
See Also:

  • Required Element Summary

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

  • Element Details

    • columnList

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

    • name

      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