io.requery

Enum CascadeAction

java.lang.Object

java.lang.Enum<CascadeAction>

io.requery.CascadeAction

All Implemented Interfaces:

Serializable, Comparable<CascadeAction>

public enum CascadeAction
extends Enum<CascadeAction>

Cascade action to use when adding or removing an element to an associative collection. Note this is different from ReferentialAction which is specifically for a ForeignKey constraint. This enumeration controls how entities in relational associations are persisted and updated when their containing entity is modified.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DELETE When the parent element is deleted its associated elements are also deleted.
NONE When a associative element is added no action will be taken, this element must be persisted before the object referencing it is persisted.
SAVE When a associative element is added it will be persisted (inserted or updated) if required.

Method Summary

Modifier and Type	Method and Description
static CascadeAction	valueOf(String name) Returns the enum constant of this type with the specified name.
static CascadeAction[]	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, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NONE

public static final CascadeAction NONE

When a associative element is added no action will be taken, this element must be persisted before the object referencing it is persisted.

SAVE

public static final CascadeAction SAVE

When a associative element is added it will be persisted (inserted or updated) if required.

DELETE

public static final CascadeAction DELETE

When the parent element is deleted its associated elements are also deleted.

Method Detail

values

public static CascadeAction[] 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 (CascadeAction c : CascadeAction.values())
    System.out.println(c);

Returns:

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

valueOf

public static CascadeAction 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