Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / ComponentFactoryHelpers.cs / 1305376 / ComponentFactoryHelpers.cs
namespace System.Workflow.ComponentModel
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;
using System.Workflow.ComponentModel.Compiler;
#region Class ComponentDispenser
internal static class ComponentDispenser
{
private static IDictionary> componentExtenderMap = new Dictionary>();
//it is super critical to note that even though we pass activity instead of a System.Type
//here, the method impl does not rely on any objectness but relies only on typeness
//- this is done to keep a static type level executor metadata (and not instance level)
// scoped in an app domain
internal static ActivityExecutor[] CreateActivityExecutors(Activity activity)
{
if (activity == null)
throw new ArgumentNullException("activity");
List executors = new List();
if (activity.SupportsSynchronization)
executors.Add(new SynchronizationFilter());
if(activity.SupportsTransaction)
executors.Add(new TransactedContextFilter());
if (activity is CompositeActivity)
{
if (activity is ICompensatableActivity)
executors.Add(new CompensationHandlingFilter());
executors.Add(new FaultAndCancellationHandlingFilter());
executors.Add(new CompositeActivityExecutor());
}
else
executors.Add(new ActivityExecutor());
return executors.ToArray();
}
internal static object[] CreateComponents(Type objectType, Type componentTypeAttribute)
{
//*******DO NOT CHANGE THE ORDER OF THE EXECUTION AS IT HAS SIGNIFICANCE AT RUNTIME
Dictionary components = new Dictionary();
// Goto all the attributes and collect matching attributes and component factories
ArrayList supportsTransactionComponents = new ArrayList();
ArrayList supportsCancelHandlerComponents = new ArrayList();
ArrayList supportsSynchronizationComponents = new ArrayList();
ArrayList supportsCompensationHandlerComponents = new ArrayList();
// dummy calls to make sure that attributes are in good shape
GetCustomAttributes(objectType, typeof(ActivityCodeGeneratorAttribute), true);
GetCustomAttributes(objectType, typeof(ActivityValidatorAttribute), true);
GetCustomAttributes(objectType, typeof(System.ComponentModel.DesignerAttribute), true);
GetCustomAttributes(objectType, typeof(System.ComponentModel.Design.Serialization.DesignerSerializerAttribute), true);
if (objectType.GetCustomAttributes(typeof(SupportsTransactionAttribute), true).Length > 0)
{
if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
supportsTransactionComponents.Add(new TransactionContextValidator());
}
if (objectType.GetCustomAttributes(typeof(SupportsSynchronizationAttribute), true).Length > 0)
{
if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
supportsSynchronizationComponents.Add(new SynchronizationValidator());
}
// IMPORTANT: sequence of these components is really critical
AddComponents(components, supportsSynchronizationComponents.ToArray());
AddComponents(components, supportsTransactionComponents.ToArray());
AddComponents(components, supportsCompensationHandlerComponents.ToArray());
AddComponents(components, supportsCancelHandlerComponents.ToArray());
//Goto all the interfaces and collect matching attributes and component factories
ArrayList customAttributes = new ArrayList();
foreach (Type interfaceType in objectType.GetInterfaces())
customAttributes.AddRange(ComponentDispenser.GetCustomAttributes(interfaceType, componentTypeAttribute, true));
//Add all the component's attributes
customAttributes.AddRange(ComponentDispenser.GetCustomAttributes(objectType, componentTypeAttribute, true));
string typeName = null;
foreach (Attribute attribute in customAttributes)
{
Type expectedBaseType = null;
if (componentTypeAttribute == typeof(ActivityCodeGeneratorAttribute))
{
typeName = ((ActivityCodeGeneratorAttribute)attribute).CodeGeneratorTypeName;
expectedBaseType = typeof(ActivityCodeGenerator);
}
else if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
{
typeName = ((ActivityValidatorAttribute)attribute).ValidatorTypeName;
expectedBaseType = typeof(Validator);
}
else
{
System.Diagnostics.Debug.Assert(false, "wrong attribute type");
}
object component = null;
try
{
if (!String.IsNullOrEmpty(typeName))
component = ComponentDispenser.CreateComponentInstance(typeName, objectType);
}
catch
{
}
if ((component != null && expectedBaseType != null && expectedBaseType.IsAssignableFrom(component.GetType())))
{
if (!components.ContainsKey(component.GetType()))
components.Add(component.GetType(), component);
}
else
{
throw new InvalidOperationException(SR.GetString(SR.Error_InvalidAttribute, componentTypeAttribute.Name, objectType.FullName));
}
}
return new ArrayList(components.Values).ToArray();
}
private static void AddComponents(Dictionary components, object[] attribComponents)
{
foreach (object component in attribComponents)
{
if (!components.ContainsKey(component.GetType()))
components.Add(component.GetType(), component);
}
}
internal static void RegisterComponentExtenders(Type extendingType, IExtenderProvider[] extenders)
{
//Make sure that there are no previous registered components
List extenderProviders = null;
if (!componentExtenderMap.ContainsKey(extendingType))
{
extenderProviders = new List();
componentExtenderMap.Add(extendingType, extenderProviders);
}
else
{
extenderProviders = componentExtenderMap[extendingType];
}
extenderProviders.AddRange(extenders);
}
internal static IList Extenders
{
get
{
List extenders = new List();
foreach (IList registeredExtenders in componentExtenderMap.Values)
extenders.AddRange(registeredExtenders);
return extenders.AsReadOnly();
}
}
// The referenceType parameter provides a way to identify the assembly in which to look for the type.
private static object CreateComponentInstance(string typeName, Type referenceType)
{
object component = null;
Type componentType = null;
try
{
string typeFullName = typeName;
int squareBracketCloseIndex = typeName.LastIndexOf(']');
if (squareBracketCloseIndex != -1)
{
typeFullName = typeName.Substring(0, squareBracketCloseIndex + 1);
}
else
{
int commaIndex = typeName.IndexOf(',');
if (commaIndex != -1)
typeFullName = typeName.Substring(0, commaIndex);
}
componentType = referenceType.Assembly.GetType(typeFullName, false);
}
catch
{
}
if (componentType == null)
{
try
{
componentType = Type.GetType(typeName, false);
}
catch
{
}
}
string message = null;
if (componentType != null)
{
try
{
component = Activator.CreateInstance(componentType);
}
catch (Exception ex)
{
message = ex.Message;
// Process error condition below
}
}
if (component == null)
{
System.Resources.ResourceManager resourceManager = new System.Resources.ResourceManager("System.Workflow.ComponentModel.StringResources", typeof(System.Workflow.ComponentModel.Activity).Assembly);
if (resourceManager != null)
message = string.Format(CultureInfo.CurrentCulture, resourceManager.GetString("Error_CantCreateInstanceOfComponent"), new object[] { typeName, message });
throw new Exception(message);
}
return component;
}
private static object[] GetCustomAttributes(Type objectType, Type attributeType, bool inherit)
{
object[] attribs = null;
try
{
if (attributeType == null)
attribs = objectType.GetCustomAttributes(inherit);
else
attribs = objectType.GetCustomAttributes(attributeType, inherit);
}
catch (Exception e)
{
throw new InvalidOperationException(SR.GetString(SR.Error_InvalidAttributes, objectType.FullName), e);
}
return attribs;
}
}
#endregion
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
namespace System.Workflow.ComponentModel
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;
using System.Workflow.ComponentModel.Compiler;
#region Class ComponentDispenser
internal static class ComponentDispenser
{
private static IDictionary> componentExtenderMap = new Dictionary>();
//it is super critical to note that even though we pass activity instead of a System.Type
//here, the method impl does not rely on any objectness but relies only on typeness
//- this is done to keep a static type level executor metadata (and not instance level)
// scoped in an app domain
internal static ActivityExecutor[] CreateActivityExecutors(Activity activity)
{
if (activity == null)
throw new ArgumentNullException("activity");
List executors = new List();
if (activity.SupportsSynchronization)
executors.Add(new SynchronizationFilter());
if(activity.SupportsTransaction)
executors.Add(new TransactedContextFilter());
if (activity is CompositeActivity)
{
if (activity is ICompensatableActivity)
executors.Add(new CompensationHandlingFilter());
executors.Add(new FaultAndCancellationHandlingFilter());
executors.Add(new CompositeActivityExecutor());
}
else
executors.Add(new ActivityExecutor());
return executors.ToArray();
}
internal static object[] CreateComponents(Type objectType, Type componentTypeAttribute)
{
//*******DO NOT CHANGE THE ORDER OF THE EXECUTION AS IT HAS SIGNIFICANCE AT RUNTIME
Dictionary components = new Dictionary();
// Goto all the attributes and collect matching attributes and component factories
ArrayList supportsTransactionComponents = new ArrayList();
ArrayList supportsCancelHandlerComponents = new ArrayList();
ArrayList supportsSynchronizationComponents = new ArrayList();
ArrayList supportsCompensationHandlerComponents = new ArrayList();
// dummy calls to make sure that attributes are in good shape
GetCustomAttributes(objectType, typeof(ActivityCodeGeneratorAttribute), true);
GetCustomAttributes(objectType, typeof(ActivityValidatorAttribute), true);
GetCustomAttributes(objectType, typeof(System.ComponentModel.DesignerAttribute), true);
GetCustomAttributes(objectType, typeof(System.ComponentModel.Design.Serialization.DesignerSerializerAttribute), true);
if (objectType.GetCustomAttributes(typeof(SupportsTransactionAttribute), true).Length > 0)
{
if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
supportsTransactionComponents.Add(new TransactionContextValidator());
}
if (objectType.GetCustomAttributes(typeof(SupportsSynchronizationAttribute), true).Length > 0)
{
if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
supportsSynchronizationComponents.Add(new SynchronizationValidator());
}
// IMPORTANT: sequence of these components is really critical
AddComponents(components, supportsSynchronizationComponents.ToArray());
AddComponents(components, supportsTransactionComponents.ToArray());
AddComponents(components, supportsCompensationHandlerComponents.ToArray());
AddComponents(components, supportsCancelHandlerComponents.ToArray());
//Goto all the interfaces and collect matching attributes and component factories
ArrayList customAttributes = new ArrayList();
foreach (Type interfaceType in objectType.GetInterfaces())
customAttributes.AddRange(ComponentDispenser.GetCustomAttributes(interfaceType, componentTypeAttribute, true));
//Add all the component's attributes
customAttributes.AddRange(ComponentDispenser.GetCustomAttributes(objectType, componentTypeAttribute, true));
string typeName = null;
foreach (Attribute attribute in customAttributes)
{
Type expectedBaseType = null;
if (componentTypeAttribute == typeof(ActivityCodeGeneratorAttribute))
{
typeName = ((ActivityCodeGeneratorAttribute)attribute).CodeGeneratorTypeName;
expectedBaseType = typeof(ActivityCodeGenerator);
}
else if (componentTypeAttribute == typeof(ActivityValidatorAttribute))
{
typeName = ((ActivityValidatorAttribute)attribute).ValidatorTypeName;
expectedBaseType = typeof(Validator);
}
else
{
System.Diagnostics.Debug.Assert(false, "wrong attribute type");
}
object component = null;
try
{
if (!String.IsNullOrEmpty(typeName))
component = ComponentDispenser.CreateComponentInstance(typeName, objectType);
}
catch
{
}
if ((component != null && expectedBaseType != null && expectedBaseType.IsAssignableFrom(component.GetType())))
{
if (!components.ContainsKey(component.GetType()))
components.Add(component.GetType(), component);
}
else
{
throw new InvalidOperationException(SR.GetString(SR.Error_InvalidAttribute, componentTypeAttribute.Name, objectType.FullName));
}
}
return new ArrayList(components.Values).ToArray();
}
private static void AddComponents(Dictionary components, object[] attribComponents)
{
foreach (object component in attribComponents)
{
if (!components.ContainsKey(component.GetType()))
components.Add(component.GetType(), component);
}
}
internal static void RegisterComponentExtenders(Type extendingType, IExtenderProvider[] extenders)
{
//Make sure that there are no previous registered components
List extenderProviders = null;
if (!componentExtenderMap.ContainsKey(extendingType))
{
extenderProviders = new List();
componentExtenderMap.Add(extendingType, extenderProviders);
}
else
{
extenderProviders = componentExtenderMap[extendingType];
}
extenderProviders.AddRange(extenders);
}
internal static IList Extenders
{
get
{
List extenders = new List();
foreach (IList registeredExtenders in componentExtenderMap.Values)
extenders.AddRange(registeredExtenders);
return extenders.AsReadOnly();
}
}
// The referenceType parameter provides a way to identify the assembly in which to look for the type.
private static object CreateComponentInstance(string typeName, Type referenceType)
{
object component = null;
Type componentType = null;
try
{
string typeFullName = typeName;
int squareBracketCloseIndex = typeName.LastIndexOf(']');
if (squareBracketCloseIndex != -1)
{
typeFullName = typeName.Substring(0, squareBracketCloseIndex + 1);
}
else
{
int commaIndex = typeName.IndexOf(',');
if (commaIndex != -1)
typeFullName = typeName.Substring(0, commaIndex);
}
componentType = referenceType.Assembly.GetType(typeFullName, false);
}
catch
{
}
if (componentType == null)
{
try
{
componentType = Type.GetType(typeName, false);
}
catch
{
}
}
string message = null;
if (componentType != null)
{
try
{
component = Activator.CreateInstance(componentType);
}
catch (Exception ex)
{
message = ex.Message;
// Process error condition below
}
}
if (component == null)
{
System.Resources.ResourceManager resourceManager = new System.Resources.ResourceManager("System.Workflow.ComponentModel.StringResources", typeof(System.Workflow.ComponentModel.Activity).Assembly);
if (resourceManager != null)
message = string.Format(CultureInfo.CurrentCulture, resourceManager.GetString("Error_CantCreateInstanceOfComponent"), new object[] { typeName, message });
throw new Exception(message);
}
return component;
}
private static object[] GetCustomAttributes(Type objectType, Type attributeType, bool inherit)
{
object[] attribs = null;
try
{
if (attributeType == null)
attribs = objectType.GetCustomAttributes(inherit);
else
attribs = objectType.GetCustomAttributes(attributeType, inherit);
}
catch (Exception e)
{
throw new InvalidOperationException(SR.GetString(SR.Error_InvalidAttributes, objectType.FullName), e);
}
return attribs;
}
}
#endregion
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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