Movatterモバイル変換

@Target(value={})@Retention(value=RUNTIME)public @interfaceUniqueConstraint

    Example:    @Entity    @Table(        name="EMPLOYEE",         uniqueConstraints=            @UniqueConstraint(columnNames={"EMP_ID", "EMP_NAME"})    )    public class Employee { ... }

Since:

Java Persistence 1.0

• Required Element Summary

  Required Elements 

  Modifier and Type	Required Element and 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 and Description
  String	name (Optional) Constraint name.

• Element Detail

  • columnNames

    public abstract String[] columnNames

    (Required) An array of the column names that make up the constraint.

• • name

    public abstract String name

    (Optional) Constraint name. A provider-chosen name will be chosen if a name is not specified.

    Since:

    Java Persistence 2.0

    Default:

    ""