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637 lines
24 KiB
C#
637 lines
24 KiB
C#
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// <copyright>
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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namespace System.Activities.DynamicUpdate
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{
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using System;
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using System.Activities.DynamicUpdate;
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using System.Activities.XamlIntegration;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Globalization;
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using System.Runtime;
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using System.Runtime.Serialization;
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[DataContract]
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[TypeConverter(typeof(DynamicUpdateMapConverter))]
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public class DynamicUpdateMap
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{
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static DynamicUpdateMap noChanges = new DynamicUpdateMap();
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static DynamicUpdateMap dummyMap = new DynamicUpdateMap();
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internal EntryCollection entries;
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IList<ArgumentInfo> newArguments;
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IList<ArgumentInfo> oldArguments;
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internal DynamicUpdateMap()
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{
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}
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public static DynamicUpdateMap NoChanges
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{
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get
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{
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return noChanges;
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}
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}
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[DataMember(EmitDefaultValue = false, Name = "entries")]
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internal EntryCollection SerializedEntries
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{
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get { return this.entries; }
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set { this.entries = value; }
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}
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[DataMember(EmitDefaultValue = false, Name = "newArguments")]
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internal IList<ArgumentInfo> SerializedNewArguments
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{
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get { return this.newArguments; }
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set { this.newArguments = value; }
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}
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[DataMember(EmitDefaultValue = false, Name = "oldArguments")]
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internal IList<ArgumentInfo> SerializedOldArguments
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{
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get { return this.oldArguments; }
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set { this.oldArguments = value; }
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}
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// this is a dummy map to be used for creating a NativeActivityUpdateContext
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// for calling UpdateInstance() on activities without map entries.
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// this should not be used anywhere except for creating NativeActivityUpdateContext.
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internal static DynamicUpdateMap DummyMap
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{
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get { return dummyMap; }
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}
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internal IList<ArgumentInfo> NewArguments
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{
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get
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{
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if (this.newArguments == null)
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{
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this.newArguments = new List<ArgumentInfo>();
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}
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return this.newArguments;
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}
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set
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{
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this.newArguments = value;
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}
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}
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internal IList<ArgumentInfo> OldArguments
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{
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get
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{
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if (this.oldArguments == null)
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{
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this.oldArguments = new List<ArgumentInfo>();
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}
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return this.oldArguments;
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}
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set
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{
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this.oldArguments = value;
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}
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}
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[DataMember(EmitDefaultValue = false)]
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internal bool ArgumentsAreUnknown
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{
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get;
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set;
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}
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[DataMember(EmitDefaultValue = false)]
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internal bool IsImplementationAsRoot
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{
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get;
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set;
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}
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[DataMember(EmitDefaultValue = false)]
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internal int NewDefinitionMemberCount
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{
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get;
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set;
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}
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internal int OldDefinitionMemberCount
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{
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get
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{
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return this.Entries.Count;
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}
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}
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[DataMember(EmitDefaultValue = false)]
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internal bool IsForImplementation { get; set; }
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// IdSpaces always have at least one member. So a count of 0 means that this is
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// DynamicUpdateMap.NoChanges, or a serialized equivalent.
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internal bool IsNoChanges
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{
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get
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{
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return this.NewDefinitionMemberCount == 0;
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}
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}
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// use the internal method AddEntry() instead
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private IList<DynamicUpdateMapEntry> Entries
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{
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get
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{
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if (this.entries == null)
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{
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this.entries = new EntryCollection();
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}
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return this.entries;
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}
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}
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public static IDictionary<object, DynamicUpdateMapItem> CalculateMapItems(Activity workflowDefinitionToBeUpdated)
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{
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return CalculateMapItems(workflowDefinitionToBeUpdated, null);
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}
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public static IDictionary<object, DynamicUpdateMapItem> CalculateMapItems(Activity workflowDefinitionToBeUpdated, LocationReferenceEnvironment environment)
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{
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return InternalCalculateMapItems(workflowDefinitionToBeUpdated, environment, false);
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}
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public static IDictionary<object, DynamicUpdateMapItem> CalculateImplementationMapItems(Activity activityDefinitionToBeUpdated)
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{
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return CalculateImplementationMapItems(activityDefinitionToBeUpdated, null);
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}
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public static IDictionary<object, DynamicUpdateMapItem> CalculateImplementationMapItems(Activity activityDefinitionToBeUpdated, LocationReferenceEnvironment environment)
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{
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return InternalCalculateMapItems(activityDefinitionToBeUpdated, environment, true);
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}
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public static DynamicUpdateMap Merge(params DynamicUpdateMap[] maps)
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{
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return Merge((IEnumerable<DynamicUpdateMap>)maps);
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}
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public static DynamicUpdateMap Merge(IEnumerable<DynamicUpdateMap> maps)
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{
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if (maps == null)
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{
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throw FxTrace.Exception.ArgumentNull("maps");
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}
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// We could try to optimize this by merging the entire set at once, but it's simpler
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// to just do pairwise merging
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int index = 0;
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DynamicUpdateMap result = null;
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foreach (DynamicUpdateMap nextMap in maps)
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{
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result = Merge(result, nextMap, new MergeErrorContext { MapIndex = index });
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index++;
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}
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return result;
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}
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static IDictionary<object, DynamicUpdateMapItem> InternalCalculateMapItems(Activity workflowDefinitionToBeUpdated, LocationReferenceEnvironment environment, bool forImplementation)
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{
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if (workflowDefinitionToBeUpdated == null)
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{
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throw FxTrace.Exception.ArgumentNull("workflowDefinitionToBeUpdated");
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}
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DynamicUpdateMapBuilder.Preparer preparer = new DynamicUpdateMapBuilder.Preparer(workflowDefinitionToBeUpdated, environment, forImplementation);
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return preparer.Prepare();
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}
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public DynamicUpdateMapQuery Query(Activity updatedWorkflowDefinition, Activity originalWorkflowDefinition)
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{
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if (this.IsNoChanges)
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{
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throw FxTrace.Exception.AsError(new InvalidOperationException(SR.NoChangesMapQueryNotSupported));
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}
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if (this.IsForImplementation)
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{
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ValidateDefinitionMatchesImplementationMap(updatedWorkflowDefinition, this.NewDefinitionMemberCount, "updatedWorkflowDefinition");
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ValidateDefinitionMatchesImplementationMap(originalWorkflowDefinition, this.OldDefinitionMemberCount, "originalWorkflowDefinition");
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}
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else
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{
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ValidateDefinitionMatchesMap(updatedWorkflowDefinition, this.NewDefinitionMemberCount, "updatedWorkflowDefinition");
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ValidateDefinitionMatchesMap(originalWorkflowDefinition, this.OldDefinitionMemberCount, "originalWorkflowDefinition");
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}
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return new DynamicUpdateMapQuery(this, updatedWorkflowDefinition, originalWorkflowDefinition);
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}
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internal static bool CanUseImplementationMapAsRoot(Activity workflowDefinition)
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{
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Fx.Assert(workflowDefinition.IsMetadataCached, "This should only be called for cached definition");
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// We can only use the implementation map as a root map if the worklflow has no public children
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return
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workflowDefinition.Children.Count == 0 &&
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workflowDefinition.ImportedChildren.Count == 0 &&
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workflowDefinition.Delegates.Count == 0 &&
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workflowDefinition.ImportedDelegates.Count == 0 &&
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workflowDefinition.RuntimeVariables.Count == 0;
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}
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internal static DynamicUpdateMap Merge(DynamicUpdateMap first, DynamicUpdateMap second, MergeErrorContext errorContext)
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{
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if (first == null || second == null)
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{
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return first ?? second;
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}
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if (first.IsNoChanges || second.IsNoChanges)
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{
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// DynamicUpdateMap.NoChanges has zero members, so we need to special-case it here.
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return first.IsNoChanges ? second : first;
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}
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ThrowIfMapsIncompatible(first, second, errorContext);
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DynamicUpdateMap result = new DynamicUpdateMap
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{
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IsForImplementation = first.IsForImplementation,
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NewDefinitionMemberCount = second.NewDefinitionMemberCount,
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ArgumentsAreUnknown = first.ArgumentsAreUnknown && second.ArgumentsAreUnknown,
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oldArguments = first.ArgumentsAreUnknown ? second.oldArguments : first.oldArguments,
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newArguments = second.ArgumentsAreUnknown ? first.newArguments : second.newArguments
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};
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foreach (DynamicUpdateMapEntry firstEntry in first.Entries)
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{
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DynamicUpdateMapEntry parent = null;
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if (firstEntry.Parent != null)
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{
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result.TryGetUpdateEntry(firstEntry.Parent.OldActivityId, out parent);
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}
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if (firstEntry.IsRemoval)
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{
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result.AddEntry(firstEntry.Clone(parent));
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}
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else
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{
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DynamicUpdateMapEntry secondEntry = second.entries[firstEntry.NewActivityId];
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result.AddEntry(DynamicUpdateMapEntry.Merge(firstEntry, secondEntry, parent, errorContext));
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}
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}
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return result;
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}
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internal void AddEntry(DynamicUpdateMapEntry entry)
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{
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this.Entries.Add(entry);
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}
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// Wrap an implementation map in a dummy map. This allows use of an implementation map as the
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// root map in the case when the root is an x:Class with no public children.
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internal DynamicUpdateMap AsRootMap()
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{
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Fx.Assert(this.IsForImplementation, "This should only be called on implementation map");
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if (!ActivityComparer.ListEquals(this.NewArguments, this.OldArguments))
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{
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throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidImplementationAsWorkflowRootForRuntimeStateBecauseArgumentsChanged));
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}
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DynamicUpdateMap result = new DynamicUpdateMap
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{
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IsImplementationAsRoot = true,
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NewDefinitionMemberCount = 1
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};
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result.AddEntry(new DynamicUpdateMapEntry(1, 1)
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{
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ImplementationUpdateMap = this,
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});
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return result;
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}
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internal void ThrowIfInvalid(Activity updatedDefinition)
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{
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Fx.Assert(updatedDefinition.IsMetadataCached, "Caller should have ensured cached definition");
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Fx.Assert(updatedDefinition.Parent == null && !this.IsForImplementation, "This should only be called on a workflow definition");
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this.ThrowIfInvalid(updatedDefinition.MemberOf);
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}
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// We verify that the count of all IdSpaces is as expected.
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// We could choose to be looser, and only check the IdSpaces that have children active;
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// but realistically, if all provided implementation maps don't match, something is probably wrong.
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// Conversely, we could check the correctness of every environment map, but it doesn't seem worth
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// doing that much work. If we find a mismatch on the environment of an executing activity, we'll
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// throw at that point.
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void ThrowIfInvalid(IdSpace updatedIdSpace)
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{
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if (this.IsNoChanges)
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{
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// 0 means this is NoChanges map, since every workflow has at least one member
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return;
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}
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if (this.NewDefinitionMemberCount != updatedIdSpace.MemberCount)
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{
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throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidUpdateMap(
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SR.WrongMemberCount(updatedIdSpace.Owner, updatedIdSpace.MemberCount, this.NewDefinitionMemberCount))));
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}
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foreach (DynamicUpdateMapEntry entry in this.Entries)
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{
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if (entry.ImplementationUpdateMap != null)
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{
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Activity implementationOwner = updatedIdSpace[entry.NewActivityId];
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if (implementationOwner == null)
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{
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string expectedId = entry.NewActivityId.ToString(CultureInfo.InvariantCulture);
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if (updatedIdSpace.Owner != null)
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{
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expectedId = updatedIdSpace.Owner.Id + "." + expectedId;
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}
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throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidUpdateMap(
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SR.ActivityNotFound(expectedId))));
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}
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if (implementationOwner.ParentOf == null)
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{
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throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidUpdateMap(
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SR.ActivityHasNoImplementation(implementationOwner))));
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}
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entry.ImplementationUpdateMap.ThrowIfInvalid(implementationOwner.ParentOf);
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}
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}
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}
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internal bool TryGetUpdateEntryByNewId(int newId, out DynamicUpdateMapEntry entry)
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{
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Fx.Assert(!this.IsNoChanges, "This method is never supposed to be called on the NoChanges map.");
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entry = null;
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for (int i = 0; i < this.Entries.Count; i++)
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{
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DynamicUpdateMapEntry currentEntry = this.Entries[i];
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if (currentEntry.NewActivityId == newId)
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{
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entry = currentEntry;
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return true;
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}
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}
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return false;
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}
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internal bool TryGetUpdateEntry(int oldId, out DynamicUpdateMapEntry entry)
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{
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if (this.entries != null && this.entries.Count > 0)
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{
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if (this.entries.Contains(oldId))
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{
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entry = this.entries[oldId];
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return true;
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}
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}
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|
|
entry = null;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// rootIdSpace is optional. if it's null, result.NewActivity will be null
|
||
|
|
internal UpdatedActivity GetUpdatedActivity(QualifiedId oldQualifiedId, IdSpace rootIdSpace)
|
||
|
|
{
|
||
|
|
UpdatedActivity result = new UpdatedActivity();
|
||
|
|
int[] oldIdSegments = oldQualifiedId.AsIDArray();
|
||
|
|
int[] newIdSegments = null;
|
||
|
|
IdSpace currentIdSpace = rootIdSpace;
|
||
|
|
DynamicUpdateMap currentMap = this;
|
||
|
|
|
||
|
|
Fx.Assert(!this.IsForImplementation, "This method is never supposed to be called on an implementation map.");
|
||
|
|
|
||
|
|
for (int i = 0; i < oldIdSegments.Length; i++)
|
||
|
|
{
|
||
|
|
if (currentMap == null || currentMap.Entries.Count == 0)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
DynamicUpdateMapEntry entry;
|
||
|
|
if (!currentMap.TryGetUpdateEntry(oldIdSegments[i], out entry))
|
||
|
|
{
|
||
|
|
// UpdateMap should contain entries for all old activities in the IdSpace
|
||
|
|
int[] subIdSegments = new int[i + 1];
|
||
|
|
Array.Copy(oldIdSegments, subIdSegments, subIdSegments.Length);
|
||
|
|
throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidUpdateMap(
|
||
|
|
SR.MapEntryNotFound(new QualifiedId(subIdSegments)))));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (entry.IsIdChange)
|
||
|
|
{
|
||
|
|
if (newIdSegments == null)
|
||
|
|
{
|
||
|
|
newIdSegments = new int[oldIdSegments.Length];
|
||
|
|
Array.Copy(oldIdSegments, newIdSegments, oldIdSegments.Length);
|
||
|
|
}
|
||
|
|
|
||
|
|
newIdSegments[i] = entry.NewActivityId;
|
||
|
|
}
|
||
|
|
|
||
|
|
Activity currentActivity = null;
|
||
|
|
if (currentIdSpace != null && !entry.IsRemoval)
|
||
|
|
{
|
||
|
|
currentActivity = currentIdSpace[entry.NewActivityId];
|
||
|
|
if (currentActivity == null)
|
||
|
|
{
|
||
|
|
// New Activity pointed to by UpdateMap should exist
|
||
|
|
string activityId = currentIdSpace.Owner.Id + "." + entry.NewActivityId.ToString(CultureInfo.InvariantCulture);
|
||
|
|
throw FxTrace.Exception.AsError(new InstanceUpdateException(SR.InvalidUpdateMap(
|
||
|
|
SR.ActivityNotFound(activityId))));
|
||
|
|
}
|
||
|
|
currentIdSpace = currentActivity.ParentOf;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (i == oldIdSegments.Length - 1)
|
||
|
|
{
|
||
|
|
result.Map = currentMap;
|
||
|
|
result.MapEntry = entry;
|
||
|
|
result.NewActivity = currentActivity;
|
||
|
|
}
|
||
|
|
else if (entry.IsRuntimeUpdateBlocked || entry.IsUpdateBlockedByUpdateAuthor)
|
||
|
|
{
|
||
|
|
currentMap = null;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
currentMap = entry.ImplementationUpdateMap;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
result.IdChanged = newIdSegments != null;
|
||
|
|
result.NewId = result.IdChanged ? new QualifiedId(newIdSegments) : oldQualifiedId;
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ThrowIfMapsIncompatible(DynamicUpdateMap first, DynamicUpdateMap second, MergeErrorContext errorContext)
|
||
|
|
{
|
||
|
|
Fx.Assert(!first.IsNoChanges && !second.IsNoChanges, "This method is never supposed to be called on the NoChanges map.");
|
||
|
|
|
||
|
|
if (first.IsForImplementation != second.IsForImplementation)
|
||
|
|
{
|
||
|
|
errorContext.Throw(SR.InvalidMergeMapForImplementation(first.IsForImplementation, second.IsForImplementation));
|
||
|
|
}
|
||
|
|
if (first.NewDefinitionMemberCount != second.OldDefinitionMemberCount)
|
||
|
|
{
|
||
|
|
errorContext.Throw(SR.InvalidMergeMapMemberCount(first.NewDefinitionMemberCount, second.OldDefinitionMemberCount));
|
||
|
|
}
|
||
|
|
if (!first.ArgumentsAreUnknown && !second.ArgumentsAreUnknown && first.IsForImplementation &&
|
||
|
|
!ActivityComparer.ListEquals(first.newArguments, second.oldArguments))
|
||
|
|
{
|
||
|
|
if (first.NewArguments.Count != second.OldArguments.Count)
|
||
|
|
{
|
||
|
|
errorContext.Throw(SR.InvalidMergeMapArgumentCount(first.NewArguments.Count, second.OldArguments.Count));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
errorContext.Throw(SR.InvalidMergeMapArgumentsChanged);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ValidateDefinitionMatchesMap(Activity activity, int memberCount, string parameterName)
|
||
|
|
{
|
||
|
|
if (activity == null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.ArgumentNull(parameterName);
|
||
|
|
}
|
||
|
|
if (activity.MemberOf == null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.ActivityIsUncached);
|
||
|
|
}
|
||
|
|
if (activity.Parent != null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.ActivityIsNotRoot);
|
||
|
|
}
|
||
|
|
if (activity.MemberOf.MemberCount != memberCount)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.InvalidUpdateMap(
|
||
|
|
SR.WrongMemberCount(activity.MemberOf.Owner, activity.MemberOf.MemberCount, memberCount)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ValidateDefinitionMatchesImplementationMap(Activity activity, int memberCount, string parameterName)
|
||
|
|
{
|
||
|
|
if (activity == null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.ArgumentNull(parameterName);
|
||
|
|
}
|
||
|
|
if (activity.MemberOf == null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.ActivityIsUncached);
|
||
|
|
}
|
||
|
|
if (activity.Parent != null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.ActivityIsNotRoot);
|
||
|
|
}
|
||
|
|
if (activity.ParentOf == null)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.InvalidUpdateMap(
|
||
|
|
SR.ActivityHasNoImplementation(activity)));
|
||
|
|
}
|
||
|
|
if (activity.ParentOf.MemberCount != memberCount)
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.InvalidUpdateMap(
|
||
|
|
SR.WrongMemberCount(activity.ParentOf.Owner, activity.ParentOf.MemberCount, memberCount)));
|
||
|
|
}
|
||
|
|
if (!CanUseImplementationMapAsRoot(activity))
|
||
|
|
{
|
||
|
|
throw FxTrace.Exception.Argument(parameterName, SR.InvalidImplementationAsWorkflowRoot);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal struct UpdatedActivity
|
||
|
|
{
|
||
|
|
// This can be true even if Map & MapEntry are null, if a parent ID changed.
|
||
|
|
// It can also be false even when Map & MapEntry are non-null, if the update didn't produce an ID shift.
|
||
|
|
public bool IdChanged;
|
||
|
|
|
||
|
|
public QualifiedId NewId;
|
||
|
|
|
||
|
|
// Null if the activity's IDSpace wasn't updated.
|
||
|
|
public DynamicUpdateMap Map;
|
||
|
|
public DynamicUpdateMapEntry MapEntry;
|
||
|
|
|
||
|
|
// Null when we're dealing with just a serialized instance with no definition.
|
||
|
|
public Activity NewActivity;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal class MergeErrorContext
|
||
|
|
{
|
||
|
|
private Stack<int> currentIdSpace;
|
||
|
|
public int MapIndex { get; set; }
|
||
|
|
|
||
|
|
public void PushIdSpace(int id)
|
||
|
|
{
|
||
|
|
if (this.currentIdSpace == null)
|
||
|
|
{
|
||
|
|
this.currentIdSpace = new Stack<int>();
|
||
|
|
}
|
||
|
|
this.currentIdSpace.Push(id);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void PopIdSpace()
|
||
|
|
{
|
||
|
|
this.currentIdSpace.Pop();
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Throw(string detail)
|
||
|
|
{
|
||
|
|
QualifiedId id = null;
|
||
|
|
if (this.currentIdSpace != null && this.currentIdSpace.Count > 0)
|
||
|
|
{
|
||
|
|
int[] idSegments = new int[this.currentIdSpace.Count];
|
||
|
|
for (int i = idSegments.Length - 1; i >= 0; i--)
|
||
|
|
{
|
||
|
|
idSegments[i] = this.currentIdSpace.Pop();
|
||
|
|
}
|
||
|
|
id = new QualifiedId(idSegments);
|
||
|
|
}
|
||
|
|
|
||
|
|
string errorMessage;
|
||
|
|
if (id == null)
|
||
|
|
{
|
||
|
|
errorMessage = SR.InvalidRootMergeMap(this.MapIndex, detail);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
errorMessage = SR.InvalidMergeMap(this.MapIndex, id, detail);
|
||
|
|
}
|
||
|
|
|
||
|
|
throw FxTrace.Exception.Argument("maps", errorMessage);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[CollectionDataContract]
|
||
|
|
internal class EntryCollection : KeyedCollection<int, DynamicUpdateMapEntry>
|
||
|
|
{
|
||
|
|
public EntryCollection()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override int GetKeyForItem(DynamicUpdateMapEntry item)
|
||
|
|
{
|
||
|
|
return item.OldActivityId;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|