WorkflowDefinitionContext.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.WorkflowServices / System / Workflow / Runtime / WorkflowDefinitionContext.cs / 1305376 / WorkflowDefinitionContext.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.Workflow.Runtime
{ 
    using System.ComponentModel.Design;
    using System.Reflection; 
    using System.Runtime; 
    using System.ServiceModel;
    using System.Workflow.ComponentModel; 
    using System.Workflow.ComponentModel.Compiler;

    abstract class WorkflowDefinitionContext
    { 
        WorkflowRuntime workflowRuntime;
 
        public abstract string ConfigurationName 
        {
            get; 
        }

        public abstract string WorkflowName
        { 
            get;
        } 
 
        internal protected WorkflowRuntime WorkflowRuntime
        { 
            get
            {
                Fx.Assert(this.workflowRuntime != null, "Attempt to call WorkflowRuntime before Register");
                return this.workflowRuntime; 
            }
        } 
 
        public abstract WorkflowInstance CreateWorkflow();
        public abstract WorkflowInstance CreateWorkflow(Guid instanceId); 
        public abstract Activity GetWorkflowDefinition();

        internal void Register(WorkflowRuntime workflowRuntime, bool validate)
        { 
            if (workflowRuntime == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("workflowRuntime"); 
            }
 
            this.workflowRuntime = workflowRuntime;

            OnRegister();
 
            if (!this.workflowRuntime.IsStarted)
            { 
                this.workflowRuntime.StartRuntime(); 
            }
 
            if (validate)
            {
                ValidateDefinition();
            } 
        }
 
        protected static TypeProvider CreateTypeProvider(Activity rootActivity) 
        {
            TypeProvider typeProvider = new TypeProvider(null); 

            Type companionType = rootActivity.GetType();
            typeProvider.SetLocalAssembly(companionType.Assembly);
            typeProvider.AddAssembly(companionType.Assembly); 

            foreach (AssemblyName assemblyName in companionType.Assembly.GetReferencedAssemblies()) 
            { 
                Assembly referencedAssembly = null;
                try 
                {
                    referencedAssembly = Assembly.Load(assemblyName);
                    if (referencedAssembly != null)
                    { 
                        typeProvider.AddAssembly(referencedAssembly);
                    } 
                } 
                catch (Exception e)
                { 
                    if (Fx.IsFatal(e))
                    {
                        throw;
                    } 
                }
 
                if (referencedAssembly == null && assemblyName.CodeBase != null) 
                {
                    typeProvider.AddAssemblyReference(assemblyName.CodeBase); 
                }
            }

            return typeProvider; 
        }
        protected abstract void OnRegister(); 
        protected abstract void OnValidate(ValidationErrorCollection errors); 

        void ValidateDefinition() 
        {
            ValidationErrorCollection errors = new ValidationErrorCollection();
            Activity rootActivity = GetWorkflowDefinition();
 
            ITypeProvider typeProvider = CreateTypeProvider(rootActivity);
 
            ServiceContainer serviceContainer = new ServiceContainer(); 
            serviceContainer.AddService(typeof(ITypeProvider), typeProvider);
 
            ValidationManager validationManager = new ValidationManager(serviceContainer);
            foreach (Validator validator in validationManager.GetValidators(rootActivity.GetType()))
            {
                foreach (ValidationError error in validator.Validate(validationManager, rootActivity)) 
                {
                    if (!error.UserData.Contains(typeof(Activity))) 
                    { 
                        error.UserData[typeof(Activity)] = rootActivity;
                    } 

                    errors.Add(error);
                }
            } 

            OnValidate(errors); 
 
            if (errors.HasErrors)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new WorkflowValidationFailedException(SR2.WorkflowValidationFailed, errors));
            }
        }
 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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