NSManagedObjectContext Class

Definition

A collection of related managed objects that create aninternally-consistent view of one or more persistent stores.

[Foundation.Register("NSManagedObjectContext", true)]
public class NSManagedObjectContext : Foundation.NSObject, AppKit.INSEditor, AppKit.INSEditorRegistration, Foundation.INSCoding, Foundation.INSLocking, IDisposable
type NSManagedObjectContext = class
    inherit NSObject
    interface INSCoding
    interface INativeObject
    interface IDisposable
    interface INSLocking
    interface INSEditor
    interface INSEditorRegistration
Inheritance
NSManagedObjectContext
Attributes
Implements

Constructors

NSManagedObjectContext()

Default constructor that initializes a new instance of this class with no parameters.

NSManagedObjectContext(IntPtr)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

NSManagedObjectContext(NSCoder)

A constructor that initializes the object from the data stored in the unarchiver object.

NSManagedObjectContext(NSManagedObjectContextConcurrencyType)

Creates a new NSManagedObjectContext of the specified type.

NSManagedObjectContext(NSObjectFlag)

Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

AutomaticallyMergesChangesFromParent

Gets or sets a Boolean that tells whether changes in the parent are automatically merged.

Class (Inherited from NSObject)
ClassHandle

The handle for this class.

ConcurrencyType

Gets the receiver's concurrency type.

DebugDescription

A developer-meaningful description of this object.

(Inherited from NSObject)
DeletedObjects

Gets a set that contains the objects that will be deleted by the next save operation.

Description

Description of the object, the Objective-C version of ToString.

(Inherited from NSObject)
DidSaveNotification

Notification constant for DidSave

Handle

Handle (pointer) to the unmanaged object representation.

(Inherited from NSObject)
HasChanges

Gets a Boolean value that tells whether the receiver has any unsaved changes.

InsertedObjects

Gets the inserted, but unsaved, objects in the context.

IsDirectBinding (Inherited from NSObject)
IsProxy (Inherited from NSObject)
MergePolicy

Gets or sets the receiver's merge policy.

Name

Gets or sets a name for the object.

ObjectsDidChangeNotification

Notification constant for ObjectsDidChange

ParentContext

Gets the receiver's parent context.

PersistentStoreCoordinator

Gets the receiver's store coordinator.

PropagatesDeletesAtEndOfEvent

Gets or sets a Boolean value that controls whether the receiver propagates deletes after change events.

QueryGenerationToken

Gets the token that identifes the current query generation behavior.

RegisteredObjects

Gets a set that contains all of the receiver's registered objects.

RetainCount

Returns the current Objective-C retain count for the object.

(Inherited from NSObject)
RetainsRegisteredObjects

Gets or sets a Boolean value that controls whether the receiver retains hard references to its registered managed objects.

Self (Inherited from NSObject)
ShouldDeleteInaccessibleFaults

Gets or sets a Boolean value that controls whether inaccessible faults wil be deleted.

StalenessInterval

Gets or sets the maximum elapsed time after fetching which causes fault fulfillment to fetch new data.

Superclass (Inherited from NSObject)
SuperHandle

Handle used to represent the methods in the base class for this NSObject.

(Inherited from NSObject)
TransactionAuthor

Gets or sets the author of the persistent history context.

TryLock
UndoManager

Gets the receiver's undo manager.

UpdatedObjects

Gets a set that contains all of the receiver's objects which have uncommitted changes.

UserInfo

Gets the receiver's user information.

WillSaveNotification

Notification constant for WillSave

Zone (Inherited from NSObject)

Methods

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using NSString keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using string keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AssignObject(IntPtr, NSPersistentStore)

Assigns object1 to store.

AwakeFromNib()

Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib().

(Inherited from NSObject)
BeginInvokeOnMainThread(Action) (Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)

Invokes asynchrously the specified code on the main UI thread.

(Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary) (Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary) (Inherited from NSObject)
BindingInfo(String) (Inherited from NSObject)
BindingOptionDescriptions(String) (Inherited from NSObject)
BindingValueClass(String) (Inherited from NSObject)
CommitEditing()
CommitEditing(NSError)
CommitEditing(NSObject, Selector, IntPtr)
ConformsToProtocol(IntPtr)

Invoked to determine if this object implements the specified protocol.

(Inherited from NSObject)
Copy()

Performs a copy of the underlying Objective-C object.

(Inherited from NSObject)
CountForFetchRequest(NSFetchRequest, NSError)

Returns the number of objects that request would return if it were run.

DangerousAutorelease() (Inherited from NSObject)
DangerousRelease() (Inherited from NSObject)
DangerousRetain() (Inherited from NSObject)
DeleteObject(NSManagedObject)

Queues object1 for deletion.

DetectConflictsForObject(NSManagedObject)

Marks object1 for conflict detection.

DidChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates a change occurred to the indexes for a to-many relationship.

(Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
DidChangeValue(String)

Indicates that a change occurred on the specified key.

(Inherited from NSObject)
DiscardEditing()
Dispose()

Releases the resources used by the NSObject object.

(Inherited from NSObject)
Dispose(Boolean)

Releases the resources used by the NSObject object.

(Inherited from NSObject)
DoesNotRecognizeSelector(Selector)

Indicates that this object does not recognize the specified selector.

(Inherited from NSObject)
EncodeTo(NSCoder)

Encodes the state of the object on the provided encoder

Equals(NSObject) (Inherited from NSObject)
Equals(Object) (Inherited from NSObject)
ExecuteFetchRequest(NSFetchRequest, NSError)

Runs the specified request.

ExecuteRequest(NSPersistentStoreRequest, NSError)

Runs the specified request.

ExposedBindings() (Inherited from NSObject)
GetBindingInfo(NSString) (Inherited from NSObject)
GetBindingOptionDescriptions(NSString) (Inherited from NSObject)
GetBindingValueClass(NSString) (Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])

Retrieves the values of the specified keys.

(Inherited from NSObject)
GetExistingObject(NSManagedObjectID, NSError)

Fetches an object with a specified id.

GetHashCode()

Generates a hash code for the current instance.

(Inherited from NSObject)
GetMethodForSelector(Selector) (Inherited from NSObject)
GetNativeField(String) (Inherited from NSObject)
GetNativeHash() (Inherited from NSObject)
Init() (Inherited from NSObject)
InitializeHandle(IntPtr) (Inherited from NSObject)
InitializeHandle(IntPtr, String) (Inherited from NSObject)
InsertObject(NSManagedObject)

Inserts object1 into the context.

Invoke(Action, Double) (Inherited from NSObject)
Invoke(Action, TimeSpan) (Inherited from NSObject)
InvokeOnMainThread(Action) (Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)

Invokes synchrously the specified code on the main UI thread.

(Inherited from NSObject)
IsEqual(NSObject) (Inherited from NSObject)
IsKindOfClass(Class) (Inherited from NSObject)
IsMemberOfClass(Class) (Inherited from NSObject)
Lock()

Developers should not use this deprecated method. Developers should use a queue style context and 'PerformAndWait' instead.

MarkDirty()

Promotes a regular peer object (IsDirectBinding is true) into a toggleref object.

(Inherited from NSObject)
MergeChangesFromContextDidSaveNotification(NSNotification)

Method that is called to merge the changes that are specified by notifictaion.

MergeChangesFromRemoteContextSave(NSDictionary, NSManagedObjectContext[])

Merges remote changes.

MutableCopy()

Creates a mutable copy of the specified NSObject.

(Inherited from NSObject)
ObjectDidBeginEditing(INSEditor)
ObjectDidEndEditing(INSEditor)
ObjectDidEndEditing(NSObject) (Inherited from NSObject)
ObjectRegisteredForID(NSManagedObjectID)

Returns the object that is identified by objectID, if it represents a registered object.

ObjectWithID(NSManagedObjectID)

Returns the object that is identified by objectID

ObserveValue(NSString, NSObject, NSDictionary, IntPtr)

Indicates that the value at the specified keyPath relative to this object has changed.

(Inherited from NSObject)
ObserveValueForKeyPath(String, IntPtr, NSDictionary, IntPtr)

Observes the object that is identified by the provided object and keypath for changes.

ObtainPermanentIDsForObjects(NSManagedObject[], NSError)

Converts the objec identifiers to permanent identifiers for the provided objects. Returns true if all of the identifiers were converted.

Perform(Action)

Asynchronously performs the specified action.

PerformAndWait(Action)

Synchronously performs the specified action.

PerformSelector(Selector) (Inherited from NSObject)
PerformSelector(Selector, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)

Invokes the selector on the current instance and if the obj is not null, it passes this as its single parameter.

(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[]) (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[]) (Inherited from NSObject)
PrepareForInterfaceBuilder() (Inherited from NSObject)
ProcessPendingChanges()

Tells the receiver to process all changes on the object graph.

Redo()

Reverses the most recent unreversed undo.

RefreshAllObjects()

Refreshes all objects in the store.

RefreshObject(NSManagedObject, Boolean)

Refreshes object1 with the most current values from its store.

RemoveObserver(NSObject, NSString)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, NSString, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
RemoveObserver(NSObject, String)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
Reset()

Resets the receiver.

RespondsToSelector(Selector)

Whether this object recognizes the specified selector.

(Inherited from NSObject)
Rollback()

Rolls the state of all objects in the object graph back to the most recent committed values.

Save(NSError)

Saves uncommitted changes and reports any error that it encounters.

SetNativeField(String, NSObject) (Inherited from NSObject)
SetNilValueForKey(NSString)

Sets the value of the specified key to null.

(Inherited from NSObject)
SetQueryGenerationFromToken(NSQueryGenerationToken, NSError)

Sets the query generation from the specified query generation token.

SetValueForKey(NSObject, NSString)

Sets the value of the property specified by the key to the specified value.

(Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

(Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)

Sets the value of a property that can be reached using a keypath.

(Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)

Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)

Sets the values of this NSObject to those in the specified dictionary.

(Inherited from NSObject)
ShouldHandleInaccessibleFault(NSManagedObject, NSManagedObjectID, NSPropertyDescription)

Returns a Boolean value that controls whether inaccessible faults wil be handled.

ToString()

Returns a string representation of the value of the current instance.

(Inherited from NSObject)
Unbind(NSString) (Inherited from NSObject)
Unbind(String) (Inherited from NSObject)
Undo()

Instructs the receiver to undo its uncommitted changes.

Unlock()
ValueForKey(NSString)

Returns the value of the property associated with the specified key.

(Inherited from NSObject)
ValueForKeyPath(NSString)

Returns the value of a property that can be reached using a keypath.

(Inherited from NSObject)
ValueForUndefinedKey(NSString)

Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates that the values of the specified indices in the specified key are about to change.

(Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
WillChangeValue(String)

Indicates that the value of the specified key is about to change.

(Inherited from NSObject)

Extension Methods

ObjectDidBeginEditing(INSEditorRegistration, INSEditor)
ObjectDidEndEditing(INSEditorRegistration, INSEditor)
ObjectDidBeginEditing(NSObject, INSEditor)
ObjectDidEndEditing(NSObject, INSEditor)
GetValidModes(NSObject, NSFontPanel)
ValidateToolbarItem(NSObject, NSToolbarItem)
GetDebugDescription(INSObjectProtocol)
AcceptsPreviewPanelControl(NSObject, QLPreviewPanel)
BeginPreviewPanelControl(NSObject, QLPreviewPanel)
EndPreviewPanelControl(NSObject, QLPreviewPanel)
GetAccessibilityCustomRotors(NSObject)

Gets the array of UIAccessibilityCustomRotor objects appropriate for this object.

SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])

Sets the array of UIAccessibilityCustomRotor objects appropriate for this object.

Applies to

See also