NotFoundAction (hibernate-core JavaDocs)

java.lang.Object
- java.lang.Enum<NotFoundAction>
- - org.hibernate.annotations.NotFoundAction

All Implemented Interfaces:

Serializable, Comparable<NotFoundAction>
```
public enum NotFoundAction
extends Enum<NotFoundAction>
```
Possible actions when the database contains a non-null fk with no matching target. This also implies that there are no physical foreign-key constraints on the database. As an example, consider a typical Customer/Order model. These actions apply when a non-null `orders.customer_fk` value does not have a corresponding value in `customers.id`. Generally this will occur in 2 scenarios:
- the associated data has been deleted
- the model uses special "magic" values to indicate null

Enum Constant Summary

Enum Constants
Enum Constant	Description
`EXCEPTION`	Throw an exception when the association is not found (default and recommended).
`IGNORE`	Ignore the association when not found in database.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static NotFoundAction`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static NotFoundAction[]`	`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
  - EXCEPTION
```
public static final NotFoundAction EXCEPTION
```
    Throw an exception when the association is not found (default and recommended).
    
    See Also:
    
    FetchNotFoundException
  - IGNORE
```
public static final NotFoundAction IGNORE
```
    Ignore the association when not found in database. Effectively treats the association as null, despite the non-null foreign-key value.
- Method Detail
  - values
```
public static NotFoundAction[] 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 (NotFoundAction c : NotFoundAction.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static NotFoundAction 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