Class CollectionViewChange<TKey, TIdentity, TState>

Namespace

SodaFlow.Collections

Assembly

SodaFlow.Core.Collections.dll

The result of one stage of a view chain in a transaction. It is the public change notification and it is also the protocol between two stages.

[PublicAPI]
public sealed class CollectionViewChange<TKey, TIdentity, TState> where TKey : notnull where TIdentity : notnull

Type Parameters

TKey

The type of the keys.

TIdentity

The type of the immutable part of an item.

TState

The type of the mutable part of an item.

Inheritance

object

CollectionViewChange<TKey, TIdentity, TState>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Extension Methods

MaybeExtensionMethods.ToMaybe<T>(T?)

UnitExtensionMethods.Ignore<T>(T)

UnitExtensionMethods.Upcast<T>(T)

Remarks

The event holds its result Keys and the store on the two sides of the change, which are Before and After. The next stage does not sample them. A stage below runs in the same transaction, and a sample of a cell there gives the value from before the transaction. Thus, the event must hold the results, or the chain does not agree with itself. That also lets a consumer make a delta with no copy of the previous values.

The index of an operation is correct for a consumer that applies the operations in sequence to the previous key list.

Properties

After

The store as this transaction left it.

Before

The store as this transaction found it.

IsReset

The stage built its keys again and did not change them incrementally. Operations is empty. Read all of Keys.

Keys

This stage's keys after the change.

Operations

The operations to apply, in order, to the previous key list.