Class ObservedCollection<TDocument>

Namespace

Cratis.Arc.Queries

Assembly

Cratis.Arc.Core.dll

A snapshot emitted by an observable collection query that carries the changes it represents.

public sealed class ObservedCollection<TDocument> : IReadOnlyList<TDocument>, IReadOnlyCollection<TDocument>, IEnumerable<TDocument>, IEnumerable, IHaveKnownChanges

Type Parameters

TDocument

Type of item in the collection.

Inheritance

object

ObservedCollection<TDocument>

Implements

IReadOnlyList<TDocument>

IReadOnlyCollection<TDocument>

IEnumerable<TDocument>

IEnumerable

IHaveKnownChanges

Inherited Members

object.GetType()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Extension Methods

MethodCalls.CallGenericMethod<TOut, T>(T, Expression<Func<T, Func<TOut>>>, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1>(T, Expression<Func<T, Func<T1, TOut>>>, T1, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2>(T, Expression<Func<T, Func<T1, T2, TOut>>>, T1, T2, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2, T3>(T, Expression<Func<T, Func<T1, T2, T3, TOut>>>, T1, T2, T3, params Type[])

ConverterExtensions.ConvertTo(object, Type)

ConceptExtensions.GetConceptValue(object)

ConceptExtensions.IsConcept(object)

JsonValueExtensions.ToJsonValue(object?)

ObservableExtensions.InvokeAndWrapWithSubject<TResult>(object, Func<CancellationToken, IObservable<TResult>>)

ObservableExtensions.InvokeAndWrapWithTransformSubject<TResult, TSource>(object, Func<CancellationToken, IObservable<TSource>>, Func<TSource, TResult>)

Remarks

This is an ordinary IEnumerable<T> to every subscriber that does not care where the delta came from, so emitting it in place of a plain array changes nothing for existing consumers.

Constructors

ObservedCollection(IReadOnlyList<TDocument>, IReadOnlyList<CollectionChange>?)

A snapshot emitted by an observable collection query that carries the changes it represents.

public ObservedCollection(IReadOnlyList<TDocument> items, IReadOnlyList<CollectionChange>? changes)

Parameters

items IReadOnlyList<TDocument>

The items making up the snapshot.

changes IReadOnlyList<CollectionChange>

The changes this snapshot represents, or null when it is a whole snapshot.

Remarks

This is an ordinary IEnumerable<T> to every subscriber that does not care where the delta came from, so emitting it in place of a plain array changes nothing for existing consumers.

Properties

Changes

Gets the changes this emission represents, or null when the emission is a whole snapshot rather than a delta - the initial query result, or a re-read after reconnecting.

public IReadOnlyList<CollectionChange>? Changes { get; }

Property Value

IReadOnlyList<CollectionChange>

Count

public int Count { get; }

Property Value

int

this[int]

public TDocument this[int index] { get; }

Parameters

index int

Property Value

TDocument

Methods

GetEnumerator()

public IEnumerator<TDocument> GetEnumerator()

Returns

IEnumerator<TDocument>