PATH Documentation > WebObjects 4.5 > EOAccess Reference

EOAccessGenericFaultHandler

Inherits from: EOFaultHandler (EOControl) : NSObject

Conforms to: NSObject
(NSObject)

Declared in: EOAccess/EOAccessFault.h

Class Description

EOAccessGenericFaultHandler is an abstract class that helps an EOAccessFault to fire by fetching data using an EODatabaseContext. Don't use EOAccessGenericFaultHandler directly; instead, use its subclasses EOAccessFaultHandler and EOAccessArrayFaultHandler.

EOAccessGenericFaultHandler lets you chain together all the fault handlers in the access layer, so the batch faulting mechanism can find other faults related to the one that triggered the batch. Use linkAfter:usingGeneration: to link one fault after another. Use next and previous to traverse the chain.

Instance Methods

faultWillFire:

- (void)faultWillFire:(id)aFault

Informs the receiver that aFault is about to be reverted to its original state. EOAccessGenericFaultHandler's implementation removes the receiver from the chain of fault handlers. This method is invoked by EOFault's clearFault: method.

generation

- (unsigned int)generation

Returns the receiver's generation, a number that represents when the fault handler was built.

linkAfter:usingGeneration:

- (void)linkAfter:(EOAccessGenericFaultHandler *)faultHandler usingGeneration:(unsigned int)generation

Adds the receiver to a chain of fault handlers, after faultHandler. generation is a number that represents when the handler was built. All faults in an access layer can be chained together, so the batch faulting mechanism can find other faults related to the one that triggered the batch.

See Also: - next, - previous

- (EOAccessGenericFaultHandler *)next

Returns the next fault in the chain.

- (EOAccessGenericFaultHandler *)previous

Returns the previous fault in the chain.