63 lines
3.2 KiB
C#
63 lines
3.2 KiB
C#
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//----------------------------------------------------------------
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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.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Xml.Linq;
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[Fx.Tag.XamlVisible(false)]
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public sealed class InstanceOwnerQueryResult : InstanceStoreQueryResult
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{
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static readonly ReadOnlyDictionaryInternal<Guid, IDictionary<XName, InstanceValue>> EmptyQueryResult = new ReadOnlyDictionaryInternal<Guid, IDictionary<XName, InstanceValue>>(new Dictionary<Guid, IDictionary<XName, InstanceValue>>(0));
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static readonly ReadOnlyDictionaryInternal<XName, InstanceValue> EmptyMetadata = new ReadOnlyDictionaryInternal<XName, InstanceValue>(new Dictionary<XName, InstanceValue>(0));
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// Zero
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public InstanceOwnerQueryResult()
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{
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InstanceOwners = EmptyQueryResult;
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}
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// One
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public InstanceOwnerQueryResult(Guid instanceOwnerId, IDictionary<XName, InstanceValue> metadata)
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{
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Dictionary<Guid, IDictionary<XName, InstanceValue>> owners = new Dictionary<Guid, IDictionary<XName, InstanceValue>>(1);
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IDictionary<XName, InstanceValue> safeMetadata; // if metadata is not readonly, copy it.
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if (metadata == null || metadata.IsReadOnly)
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safeMetadata = metadata;
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else
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{
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// Copy dictionary & make a readonly wrapper.
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IDictionary<XName, InstanceValue> copy = new Dictionary<XName, InstanceValue>(metadata);
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safeMetadata = new ReadOnlyDictionaryInternal<XName, InstanceValue>(copy);
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}
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owners.Add(instanceOwnerId, metadata == null ? EmptyMetadata : safeMetadata);
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InstanceOwners = new ReadOnlyDictionaryInternal<Guid, IDictionary<XName, InstanceValue>>(owners);
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}
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// N
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public InstanceOwnerQueryResult(IDictionary<Guid, IDictionary<XName, InstanceValue>> instanceOwners)
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{
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Dictionary<Guid, IDictionary<XName, InstanceValue>> owners = new Dictionary<Guid, IDictionary<XName, InstanceValue>>(instanceOwners.Count);
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foreach (KeyValuePair<Guid, IDictionary<XName, InstanceValue>> metadata in instanceOwners)
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{
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IDictionary<XName, InstanceValue> safeMetadata; // if metadata is not readonly, copy it.
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if (metadata.Value == null || metadata.Value.IsReadOnly)
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safeMetadata = metadata.Value;
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else
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{
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// Copy dictionary & make a readonly wrapper.
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IDictionary<XName, InstanceValue> copy = new Dictionary<XName, InstanceValue>(metadata.Value);
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safeMetadata = new ReadOnlyDictionaryInternal<XName, InstanceValue>(copy);
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}
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owners.Add(metadata.Key, metadata.Value == null ? EmptyMetadata : safeMetadata);
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}
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InstanceOwners = new ReadOnlyDictionaryInternal<Guid, IDictionary<XName, InstanceValue>>(owners);
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}
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public IDictionary<Guid, IDictionary<XName, InstanceValue>> InstanceOwners { get; private set; }
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}
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}
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