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Berkeley
DB Java Edition version 1.7.1 |
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java.lang.Objectcom.sleepycat.je.ForeignKeyDeleteAction
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
.
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 |
public static final ForeignKeyDeleteAction ABORT
DatabaseException
.
public static final ForeignKeyDeleteAction CASCADE
public static final ForeignKeyDeleteAction NULLIFY
ForeignKeyNullifier
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Berkeley
DB Java Edition version 1.7.1 |
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