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//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Activities
{
using System.Activities;
using System.Activities.Debugger;
using System.Activities.DynamicUpdate;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime;
using System.Runtime.DurableInstancing;
using System.ServiceModel.Activities.Description;
using System.ServiceModel.Description;
using System.ServiceModel.XamlIntegration;
using System.Windows.Markup;
using System.Xml;
using System.Xml.Linq;
class WorkflowDefinitionProvider
{
IDictionary<WorkflowIdentityKey, WorkflowService> definitionCollection;
WorkflowService defaultWorkflowService;
WorkflowServiceVersionsCollection supportedVersions;
WorkflowServiceHost wfsh;
public WorkflowDefinitionProvider(WorkflowService workflowService, WorkflowServiceHost wfsh)
{
Fx.Assert(workflowService != null, "workflowService cannot be null!");
Fx.Assert(wfsh != null, "wfsh cannot be null!");
this.wfsh = wfsh;
this.defaultWorkflowService = workflowService;
this.definitionCollection = new Dictionary<WorkflowIdentityKey, WorkflowService>();
this.supportedVersions = new WorkflowServiceVersionsCollection(this);
}
public ICollection<WorkflowService> SupportedVersions
{
get
{
return this.supportedVersions;
}
}
public WorkflowIdentity DefaultDefinitionIdentity
{
get
{
return this.defaultWorkflowService.DefinitionIdentity;
}
}
public void GetDefinitionIdentityMetadata(IDictionary<XName, InstanceValue> metadataCollection)
{
if (metadataCollection == null)
{
throw FxTrace.Exception.ArgumentNull("metaDataCollection");
}
if (!metadataCollection.ContainsKey(Workflow45Namespace.DefinitionIdentities))
{
Collection<WorkflowIdentity> identityCollection = new Collection<WorkflowIdentity>();
identityCollection.Add(this.DefaultDefinitionIdentity);
foreach (WorkflowIdentityKey identityKey in this.definitionCollection.Keys)
{
identityCollection.Add(identityKey.Identity);
}
if (identityCollection.Count > 1 || (identityCollection.Count == 1 && identityCollection[0] != null))
{
metadataCollection.Add(Workflow45Namespace.DefinitionIdentities, new InstanceValue(identityCollection));
}
}
}
void AddDefinition(WorkflowService workflowService)
{
if (workflowService == null)
{
throw FxTrace.Exception.ArgumentNull("workflowService");
}
WorkflowIdentityKey identityKey = new WorkflowIdentityKey(workflowService.DefinitionIdentity);
if (object.Equals(this.DefaultDefinitionIdentity, identityKey.Identity) || this.definitionCollection.ContainsKey(identityKey))
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.DuplicateDefinitionIdentity(identityKey.Identity == null ? "null" : identityKey.Identity.ToString())));
}
if (workflowService.Name != this.defaultWorkflowService.Name)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.DifferentWorkflowServiceNameNotSupported(workflowService.Name, this.defaultWorkflowService.Name)));
}
this.ThrowIfNotConfigurable();
workflowService.ValidateForVersioning(this.defaultWorkflowService);
this.definitionCollection.Add(identityKey, workflowService);
}
bool Remove(WorkflowService workflowService)
{
this.ThrowIfNotConfigurable();
if (this.definitionCollection.Values.Contains(workflowService))
{
workflowService.DetachFromVersioning(this.defaultWorkflowService);
return this.definitionCollection.Remove(new WorkflowIdentityKey(workflowService.DefinitionIdentity));
}
return false;
}
void Clear()
{
this.ThrowIfNotConfigurable();
foreach (WorkflowService workflowService in this.definitionCollection.Values)
{
workflowService.DetachFromVersioning(this.defaultWorkflowService);
}
this.definitionCollection.Clear();
}
void ThrowIfNotConfigurable()
{
if (!this.wfsh.IsConfigurable)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WorkflowServiceHostCannotAddOrRemoveServiceDefinitionAfterOpen));
}
}
public bool TryGetDefinition(WorkflowIdentity workflowIdentity, out Activity workflowDefinition)
{
workflowDefinition = null;
WorkflowService workflowService;
bool found = false;
if (object.Equals(workflowIdentity, this.DefaultDefinitionIdentity))
{
workflowDefinition = this.defaultWorkflowService.Body;
found = true;
}
else if (this.definitionCollection.TryGetValue(new WorkflowIdentityKey(workflowIdentity), out workflowService))
{
workflowDefinition = workflowService.Body;
found = true;
}
return found;
}
public bool TryGetDefinitionAndMap(WorkflowIdentity currentIdentity, WorkflowIdentity updatedIdentity, out Activity workflowDefinition, out DynamicUpdateMap updateMap)
{
WorkflowService workflowService;
if (object.Equals(updatedIdentity, this.DefaultDefinitionIdentity))
{
workflowService = this.defaultWorkflowService;
}
else
{
this.definitionCollection.TryGetValue(new WorkflowIdentityKey(updatedIdentity), out workflowService);
}
if (workflowService != null && workflowService.UpdateMaps.TryGetValue(currentIdentity, out updateMap) && updateMap != null)
{
workflowDefinition = workflowService.Body;
return true;
}
workflowDefinition = null;
updateMap = null;
return false;
}
class WorkflowServiceVersionsCollection : ICollection<WorkflowService>
{
WorkflowDefinitionProvider workflowDefinitionProvider;
public WorkflowServiceVersionsCollection(WorkflowDefinitionProvider workflowDefinitionProvider)
{
this.workflowDefinitionProvider = workflowDefinitionProvider;
}
public void Add(WorkflowService item)
{
this.workflowDefinitionProvider.AddDefinition(item);
}
public void Clear()
{
this.workflowDefinitionProvider.Clear();
}
public bool Contains(WorkflowService item)
{
return this.workflowDefinitionProvider.definitionCollection.Values.Contains(item);
}
public void CopyTo(WorkflowService[] array, int arrayIndex)
{
this.workflowDefinitionProvider.definitionCollection.Values.CopyTo(array, arrayIndex);
}
public int Count
{
get
{
return this.workflowDefinitionProvider.definitionCollection.Count;
}
}
public bool IsReadOnly
{
get
{
return false;
}
}
public bool Remove(WorkflowService workflowService)
{
return this.workflowDefinitionProvider.Remove(workflowService);
}
public IEnumerator<WorkflowService> GetEnumerator()
{
return this.workflowDefinitionProvider.definitionCollection.Values.GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return this.workflowDefinitionProvider.definitionCollection.Values.GetEnumerator();
}
}
}
}
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