73 lines
2.6 KiB
C#
73 lines
2.6 KiB
C#
//----------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//----------------------------------------------------------------
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namespace System.Runtime.DurableInstancing
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{
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Runtime;
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using System.Xml.Linq;
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[Fx.Tag.XamlVisible(false)]
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public sealed class InstanceKeyView
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{
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static readonly ReadOnlyDictionaryInternal<XName, InstanceValue> emptyProperties = new ReadOnlyDictionaryInternal<XName, InstanceValue>(new Dictionary<XName, InstanceValue>(0));
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IDictionary<XName, InstanceValue> metadata;
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Dictionary<XName, InstanceValue> accumulatedMetadataWrites;
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internal InstanceKeyView(Guid key)
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{
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InstanceKey = key;
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InstanceKeyMetadataConsistency = InstanceValueConsistency.InDoubt | InstanceValueConsistency.Partial;
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}
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InstanceKeyView(InstanceKeyView source)
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{
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InstanceKey = source.InstanceKey;
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InstanceKeyState = source.InstanceKeyState;
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InstanceKeyMetadata = source.InstanceKeyMetadata;
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InstanceKeyMetadataConsistency = source.InstanceKeyMetadataConsistency;
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}
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public Guid InstanceKey { get; private set; }
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public InstanceKeyState InstanceKeyState { get; internal set; }
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public InstanceValueConsistency InstanceKeyMetadataConsistency { get; internal set; }
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public IDictionary<XName, InstanceValue> InstanceKeyMetadata
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{
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get
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{
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IDictionary<XName, InstanceValue> pendingWrites = this.accumulatedMetadataWrites;
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this.accumulatedMetadataWrites = null;
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this.metadata = pendingWrites.ReadOnlyMergeInto(this.metadata ?? InstanceKeyView.emptyProperties, true);
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return this.metadata;
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}
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internal set
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{
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this.accumulatedMetadataWrites = null;
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this.metadata = value;
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}
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}
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internal Dictionary<XName, InstanceValue> AccumulatedMetadataWrites
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{
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get
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{
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if (this.accumulatedMetadataWrites == null)
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{
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this.accumulatedMetadataWrites = new Dictionary<XName, InstanceValue>();
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}
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return this.accumulatedMetadataWrites;
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}
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}
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internal InstanceKeyView Clone()
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{
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return new InstanceKeyView(this);
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}
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}
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}
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