org.panteleyev.persistence.annotations

Enum ReferenceOption

java.lang.Object

java.lang.Enum<ReferenceOption>

org.panteleyev.persistence.annotations.ReferenceOption

All Implemented Interfaces:

Serializable, Comparable<ReferenceOption>

public enum ReferenceOption
extends Enum<ReferenceOption>

Foreign key reference option.

See Also:

MySQL Foreign Keys

Enum Constant Summary

Enum Constants

Enum Constant and Description
CASCADE Delete or update the row from the parent table, and automatically delete or update the matching rows in the child table.
NO_ACTION Same as RESTRICT
NONE No action is specified in the ON DELETE or ON UPDATE clause.
RESTRICT Rejects the delete or update operation for the parent table.
SET_NULL Delete or update the row from the parent table, and set the foreign key column or columns in the child table to NULL.

Method Summary

Modifier and Type	Method and Description
String	toString()
static ReferenceOption	valueOf(String name) Returns the enum constant of this type with the specified name.
static ReferenceOption[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NONE

public static final ReferenceOption NONE

No action is specified in the ON DELETE or ON UPDATE clause.

RESTRICT

public static final ReferenceOption RESTRICT

Rejects the delete or update operation for the parent table.

CASCADE

public static final ReferenceOption CASCADE

Delete or update the row from the parent table, and automatically delete or update the matching rows in the child table.

SET_NULL

public static final ReferenceOption SET_NULL

Delete or update the row from the parent table, and set the foreign key column or columns in the child table to NULL.

NO_ACTION

public static final ReferenceOption NO_ACTION

Same as RESTRICT

Method Detail

values

public static ReferenceOption[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ReferenceOption c : ReferenceOption.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ReferenceOption valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

toString

public String toString()

Overrides:

toString in class Enum<ReferenceOption>