EndpointDispatcherTable.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Dispatcher / EndpointDispatcherTable.cs / 1 / EndpointDispatcherTable.cs

                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.ServiceModel.Dispatcher 
{
    using System.ServiceModel; 
    using System.ServiceModel.Channels; 
    using System.Collections.Generic;
    using System.Collections.ObjectModel; 
    using System.Diagnostics;
    using System.ServiceModel.Diagnostics;
    using System.Threading;
 
    class EndpointDispatcherTable
    { 
        MessageFilterTable filters; 
        object thisLock;
        const int optimizationThreshold = 2; 
        List cachedEndpoints;

        public EndpointDispatcherTable(object thisLock)
        { 
            this.thisLock = thisLock;
        } 
 
        public int Count
        { 
            get
            {
                return ((this.cachedEndpoints != null) ? cachedEndpoints.Count : 0) +
                    ((this.filters != null) ? this.filters.Count : 0); 
            }
        } 
 
        object ThisLock
        { 
            get { return thisLock; }
        }

        public void AddEndpoint(EndpointDispatcher endpoint) 
        {
            lock (ThisLock) 
            { 
                MessageFilter filter = endpoint.EndpointFilter;
                int priority = endpoint.FilterPriority; 

                if (filters == null)
                {
                    if (this.cachedEndpoints == null) 
                    {
                        this.cachedEndpoints = new List(optimizationThreshold); 
                    } 

                    if (this.cachedEndpoints.Count < optimizationThreshold) 
                    {
                        this.cachedEndpoints.Add(endpoint);
                    }
                    else 
                    {
                        filters = new MessageFilterTable(); 
                        for (int i = 0; i < this.cachedEndpoints.Count; i++) 
                        {
                            int cachedPriority = cachedEndpoints[i].FilterPriority; 
                            MessageFilter cachedFilter = cachedEndpoints[i].EndpointFilter;
                            filters.Add(cachedFilter, cachedEndpoints[i], cachedPriority);
                        }
                        filters.Add(filter, endpoint, priority); 
                        this.cachedEndpoints = null;
                    } 
                } 
                else
                { 
                    filters.Add(filter, endpoint, priority);
                }
            }
        } 

        public void RemoveEndpoint(EndpointDispatcher endpoint) 
        { 
            lock (ThisLock)
            { 
                if (filters == null)
                {
                    if (cachedEndpoints != null && cachedEndpoints.Contains(endpoint))
                    { 
                        cachedEndpoints.Remove(endpoint);
                    } 
                } 
                else
                { 
                    MessageFilter filter = endpoint.EndpointFilter;
                    filters.Remove(filter);
                }
            } 
        }
 
        EndpointDispatcher LookupInCache(Message message, out bool addressMatched) 
        {
            EndpointDispatcher result = null; 
            int priority = int.MinValue;
            bool duplicatePriority = false;
            addressMatched = false;
 
            if (this.cachedEndpoints != null && this.cachedEndpoints.Count > 0)
            { 
                for (int i = 0; i < this.cachedEndpoints.Count; i++) 
                {
                    EndpointDispatcher cachedEndpoint = cachedEndpoints[i]; 
                    int cachedPriority = cachedEndpoint.FilterPriority;
                    MessageFilter cachedFilter = cachedEndpoint.EndpointFilter;

                    bool matchResult; 
                    AndMessageFilter andFilter = cachedFilter as AndMessageFilter;
                    if (andFilter != null) 
                    { 
                        bool addressResult;
                        matchResult = andFilter.Match(message, out addressResult); 
                        addressMatched |= addressResult;
                    }
                    else
                    { 
                        matchResult = cachedFilter.Match(message);
                    } 
 
                    if (matchResult)
                    { 
                        addressMatched = true;
                        if (cachedPriority > priority || result == null)
                        {
                            result = cachedEndpoint; 
                            priority = cachedPriority;
                            duplicatePriority = false; 
                        } 
                        else if (cachedPriority == priority && result != null)
                        { 
                            duplicatePriority = true;
                        }
                    }
                } 
            }
 
            if (duplicatePriority) 
            {
                throw TraceUtility.ThrowHelperError(new MultipleFilterMatchesException(SR.GetString(SR.FilterMultipleMatches)), message); 
            }

            return result;
        } 

        public EndpointDispatcher Lookup(Message message, out bool addressMatched) 
        { 
            EndpointDispatcher data = null;
 
            data = LookupInCache(message, out addressMatched);

            if (data == null)
            { 
                lock (ThisLock)
                { 
                    data = LookupInCache(message, out addressMatched); 

                    if (data == null && filters != null) 
                    {
                        filters.GetMatchingValue(message, out data, out addressMatched);
                    }
                } 
            }
 
            return data; 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK