SyncSubscriptionSet

@frozen
public struct SyncSubscriptionSet

extension SyncSubscriptionSet: Sequence

SyncSubscriptionSet is a collection of SyncSubscriptions. This is the entry point for adding and removing SyncSubscriptions.

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Initializers

count
The number of subscriptions in the subscription set.
Declaration
Swift

public var count: Int { get }
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                    update(_:onComplete:)

Synchronously performs any transactions (add/remove/update) to the subscription set within the block.

Declaration

Swift

public func update(_ block: (() -> Void), onComplete: ((Error?) -> Void)? = nil)

Parameters

`block`	The block containing the subscriptions transactions to perform.
`onComplete`	The block called upon synchronization of subscriptions to the server. Otherwise an `Error`describing what went wrong will be returned by the block

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state
Returns the current state for the subscription set.
Declaration
Swift

public var state: SyncSubscriptionState { get }
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                    first(named:)

Returns a subscription by the specified name.

Declaration

Swift

public func first(named: String) -> SyncSubscription?

Parameters


                                named

The name of the subscription searching for.

Return Value

A subscription for the given name.

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                    first(ofType:where:)

Returns a subscription by the specified query.

Declaration

Swift

public func first<T>(ofType type: T.Type, where query: @escaping (Query<T>) -> Query<Bool>) -> SyncSubscription? where T : RealmSwiftObject

Parameters

`type`	The type of the object to be queried.
`where`	A query builder that produces a subscription which can be used to search the subscription by query and/or name.

Return Value

A query builder that produces a subscription which can used to search for the subscription.

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                    first(ofType:where:_:)

Returns a subscription by the specified query.

Declaration

Swift

public func first<T>(ofType type: T.Type, where predicateFormat: String, _ args: Any...) -> SyncSubscription? where T : RealmSwiftObject

Parameters

`type`	The type of the object to be queried.
`where`	A query builder that produces a subscription which can be used to search the subscription by query and/or name.

Return Value

A query builder that produces a subscription which can used to search for the subscription.

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                    first(ofType:where:)

Returns a subscription by the specified query.

Declaration

Swift

public func first<T>(ofType type: T.Type, where predicate: NSPredicate) -> SyncSubscription? where T : RealmSwiftObject

Parameters

`type`	The type of the object to be queried.
`where`	A query builder that produces a subscription which can be used to search the subscription by query and/or name.

Return Value

A query builder that produces a subscription which can used to search for the subscription.

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                    append(_:)

Appends one or several subscriptions to the subscription set.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func append<T>(_ subscriptions: QuerySubscription<T>...) where T : RealmSwiftObject

Parameters


                                subscriptions

The subscriptions to be added to the subscription set.

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                    remove(ofType:_:)

Removes a subscription with the specified query.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func remove<T>(ofType type: T.Type, _ query: @escaping (Query<T>) -> Query<Bool>) where T : RealmSwiftObject

Parameters

`type`	The type of the object to be removed.
`to`	A query for the subscription to be removed from the subscription set.

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                    remove(ofType:where:_:)

Removes a subscription with the specified query.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func remove<T>(ofType type: T.Type, where predicateFormat: String, _ args: Any...) where T : RealmSwiftObject

Parameters

`type`	The type of the object to be removed.
`predicateFormat`	A predicate format string, optionally followed by a variable number of arguments, which will be used to identify the subscription to be removed.

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                    remove(ofType:where:)

Removes a subscription with the specified query.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func remove<T>(ofType type: T.Type, where predicate: NSPredicate) where T : RealmSwiftObject

Parameters

`type`	The type of the object to be removed.
`predicate`	The predicate which will be used to identify the subscription to be removed.

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                    remove(_:)

Removes one or several subscriptions from the subscription set.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func remove(_ subscriptions: SyncSubscription...)

Parameters


                                subscription

The subscription to be removed from the subscription set.

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                    remove(named:)

Removes a subscription with the specified name from the subscription set.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func remove(named: String)

Parameters


                                named

The name of the subscription to be removed from the subscription set.

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removeAll()
Removes all subscriptions from the subscription set.

Warning
This method may only be called during a write subscription block.

Warning
Removing all subscriptions will result in an error if no new subscription is added. Server should acknowledge at least one subscription.
Declaration
Swift

public func removeAll()
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                    removeAll(ofType:)

Removes zero or none subscriptions of the given type from the subscription set.

Warning

This method may only be called during a write subscription block.

Declaration

Swift

public func removeAll<T>(ofType type: T.Type) where T : RealmSwiftObject

Parameters


                                type

The type of the objects to be removed.

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Subscription Retrieval


                    
                    
                    subscript(_:)

Returns the subscription at the given position.

Declaration

Swift

public subscript(position: Int) -> SyncSubscription? { get }

Parameters


                                position

The index for the resulting subscription.

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first
Returns the first object in the SyncSubscription list, or nil if the subscriptions are empty.
Declaration
Swift

public var first: SyncSubscription? { get }
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last
Returns the last object in the SyncSubscription list, or nil if the subscriptions are empty.
Declaration
Swift

public var last: SyncSubscription? { get }
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Sequence Support

makeIterator()
Returns a SyncSubscriptionSetIterator that yields successive elements in the subscription collection.
Declaration
Swift

public func makeIterator() -> SyncSubscriptionSetIterator
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                    update(_:)

Asynchronous

Creates and commits a transaction, updating the subscription set, this will continue when the server acknowledge and all the data associated with this collection of subscriptions is synced.

Throws

An NSError if the subscription set state changes to an error state or there is and error while committing any changes to the subscriptions.

Declaration

Swift

@MainActor
public func update(_ block: (() -> Void)) async throws

Parameters


                                block

The block containing the subscriptions transactions to perform.

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                    updateSubscriptions(_:)

Creates and commit a transaction, updating the subscription set, this will return success when the server acknowledge and all the data associated with this collection of subscriptions is synced.

Declaration

Swift

public func updateSubscriptions(_ block: @escaping (() -> Void)) -> Future<Void, Error>

Parameters


                                block

The block containing the subscriptions transactions to perform.

Return Value

A publisher that eventually returns Result.success or Error.

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