Package org.hibernate.annotations

Annotation Interface ColumnDefault

@Target({FIELD,METHOD}) @Retention(RUNTIME) public @interface ColumnDefault
Specifies that a column has a default value specified in DDL.

@ColumnDefault may be used in combination with:

  • @DynamicInsert, to let the database fill in the value of a null entity attribute, or
  • @Generated, to populate an entity attribute with the defaulted value of a database column.

For example, this field will be populated with the value "new" by the database when the entity is inserted: 

 @Generated @ColumnDefault(value = "'new'")
 private String status;

If @Generated is not used, a default value can cause state held in memory to lose synchronization with the database.

See Also:

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    String
    value
    The default value to use in generated DDL.

  • Element Details

    • value

      String value
      The default value to use in generated DDL.
      Returns:
      a SQL expression that evaluates to the default column value