com.sleepycat.je
Class ForeignKeyDeleteAction

java.lang.Object
  |
  +--com.sleepycat.je.ForeignKeyDeleteAction

public class ForeignKeyDeleteAction

extends Object

The action taken when a referenced record in the foreign key database is deleted.

The delete action applies to a secondary database that is configured to have a foreign key integrity constraint. The delete action is specified by calling SecondaryConfig.setForeignKeyDeleteAction(com.sleepycat.je.ForeignKeyDeleteAction).

When a record in the foreign key database is deleted, it is checked to see if it is referenced by any record in the associated secondary database. If the key is referenced, the delete action is applied. By default, the delete action is ABORT.

See Also:

SecondaryConfig, ForeignKeyNullifier

Field Summary

static ForeignKeyDeleteAction	ABORT When a referenced record in the foreign key database is deleted, abort the transaction by throwing a DatabaseException.
static ForeignKeyDeleteAction	CASCADE When a referenced record in the foreign key database is deleted, delete the primary database record that references it.
static ForeignKeyDeleteAction	NULLIFY When a referenced record in the foreign key database is deleted, set the reference to null in the primary database record that references it, thereby deleting the secondary key.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ABORT

public static final ForeignKeyDeleteAction ABORT

When a referenced record in the foreign key database is deleted, abort the transaction by throwing a DatabaseException.

CASCADE

public static final ForeignKeyDeleteAction CASCADE

When a referenced record in the foreign key database is deleted, delete the primary database record that references it.

NULLIFY

public static final ForeignKeyDeleteAction NULLIFY

When a referenced record in the foreign key database is deleted, set the reference to null in the primary database record that references it, thereby deleting the secondary key.

See Also:

ForeignKeyNullifier