/// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            if (odataPath.PathTemplate == "~/entityset/key" ||
                odataPath.PathTemplate == "~/entityset/key/cast")
            {
                HttpMethod httpMethod = controllerContext.Request.Method;
                string httpMethodName;

                switch (httpMethod.ToString().ToUpperInvariant())
                {
                    case "GET":
                        httpMethodName = "Get";
                        break;
                    case "PUT":
                        httpMethodName = "Put";
                        break;
                    case "PATCH":
                    case "MERGE":
                        httpMethodName = "Patch";
                        break;
                    case "DELETE":
                        httpMethodName = "Delete";
                        break;
                    default:
                        return null;
                }

                Contract.Assert(httpMethodName != null);

                IEdmEntityType entityType = odataPath.EdmType as IEdmEntityType;

                // e.g. Try GetCustomer first, then fallback on Get action name
                string actionName = actionMap.FindMatchingAction(
                    httpMethodName + entityType.Name,
                    httpMethodName);

                if (actionName != null)
                {
                    KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];
                    controllerContext.AddKeyValueToRouteData(keyValueSegment, entityType, ODataRouteConstants.Key);
                    return actionName;
                }
            }
            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            string prefix;
            ComplexCastPathSegment cast;
            IEdmProperty property = GetProperty(odataPath, controllerContext.Request.Method, out prefix, out cast);
            IEdmEntityType declaringType = property == null ? null : property.DeclaringType as IEdmEntityType;

            if (declaringType != null)
            {
                string actionName;
                if (cast == null)
                {
                    actionName = actionMap.FindMatchingAction(
                        prefix + property.Name + "From" + declaringType.Name,
                        prefix + property.Name);
                }
                else
                {
                    // for example: GetCityOfSubAddressFromVipCustomer or GetCityOfSubAddress
                    actionName = actionMap.FindMatchingAction(
                        prefix + property.Name + "Of" + cast.CastType.Name + "From" + declaringType.Name,
                        prefix + property.Name + "Of" + cast.CastType.Name);
                }

                if (actionName != null)
                {
                    if (odataPath.PathTemplate.StartsWith("~/entityset/key", StringComparison.Ordinal))
                    {
                        EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                        IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                        KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                        controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                    }

                    return actionName;
                }
            }

            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext,
            ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            if (controllerContext.Request.Method == HttpMethod.Get)
            {
                string actionName = null;
                switch (odataPath.PathTemplate)
                {
                    case "~/entityset/key/cast/function":
                    case "~/entityset/key/function":
                        actionName = GetFunction(odataPath).SelectAction(actionMap, isCollection: false);
                        if (actionName != null)
                        {
                            controllerContext.AddKeyValueToRouteData(odataPath);
                        }
                        break;
                    case "~/entityset/cast/function":
                    case "~/entityset/function":
                        actionName = GetFunction(odataPath).SelectAction(actionMap, isCollection: true);
                        break;
                    case "~/singleton/function":
                    case "~/singleton/cast/function":
                        actionName = GetFunction(odataPath).SelectAction(actionMap, isCollection: false);
                        break;
                }

                if (actionName != null)
                {
                    controllerContext.AddFunctionParameterToRouteData(odataPath.Segments.Last() as BoundFunctionPathSegment);
                    return actionName;
                }
            }

            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            if (controllerContext.Request.Method == HttpMethod.Post)
            {
                switch (odataPath.PathTemplate)
                {
                    case "~/entityset/key/cast/action":
                    case "~/entityset/key/action":
                        string actionName = GetAction(odataPath).SelectAction(actionMap, isCollection: false);
                        if (actionName != null)
                        {
                            EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                            IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                            KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                            controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType,
                                ODataRouteConstants.Key);
                        }
                        return actionName;
                    case "~/entityset/cast/action":
                    case "~/entityset/action":
                        return GetAction(odataPath).SelectAction(actionMap, isCollection: true);
                    case "~/singleton/action":
                    case "~/singleton/cast/action":
                        return GetAction(odataPath).SelectAction(actionMap, isCollection: false);
                }
            }

            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            if (controllerContext.Request.Method == HttpMethod.Post)
            {
                switch (odataPath.PathTemplate)
                {
                    case "~/entityset/key/cast/action":
                    case "~/entityset/key/action":
                        string actionName = GetAction(odataPath).SelectAction(actionMap, isCollection: false);
                        if (actionName != null)
                        {
                            controllerContext.AddKeyValueToRouteData(odataPath);
                        }
                        return actionName;
                    case "~/entityset/cast/action":
                    case "~/entityset/action":
                        return GetAction(odataPath).SelectAction(actionMap, isCollection: true);
                    case "~/singleton/action":
                    case "~/singleton/cast/action":
                        return GetAction(odataPath).SelectAction(actionMap, isCollection: false);
                }
            }

            return null;
        }
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext,
            ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            string actionName = null;
            DynamicPropertyPathSegment dynamicPropertSegment = null;

            switch (odataPath.PathTemplate)
            {
                case "~/entityset/key/dynamicproperty":
                case "~/entityset/key/cast/dynamicproperty":
                case "~/singleton/dynamicproperty":
                case "~/singleton/cast/dynamicproperty":
                    dynamicPropertSegment = odataPath.Segments[odataPath.Segments.Count - 1] as DynamicPropertyPathSegment;
                    if (dynamicPropertSegment == null)
                    {
                        return null;
                    }

                    if (controllerContext.Request.Method == HttpMethod.Get)
                    {
                        string actionNamePrefix = String.Format(CultureInfo.InvariantCulture, "Get{0}", _actionName);
                        actionName = actionMap.FindMatchingAction(actionNamePrefix);
                    }
                    break;
                case "~/entityset/key/property/dynamicproperty":
                case "~/entityset/key/cast/property/dynamicproperty":
                case "~/singleton/property/dynamicproperty":
                case "~/singleton/cast/property/dynamicproperty":
                    dynamicPropertSegment = odataPath.Segments[odataPath.Segments.Count - 1] as DynamicPropertyPathSegment;
                    if (dynamicPropertSegment == null)
                    {
                        return null;
                    }

                    PropertyAccessPathSegment propertyAccessSegment = odataPath.Segments[odataPath.Segments.Count - 2]
                            as PropertyAccessPathSegment;
                    if (propertyAccessSegment == null)
                    {
                        return null;
                    }

                    EdmComplexType complexType = propertyAccessSegment.Property.Type.Definition as EdmComplexType;
                    if (complexType == null)
                    {
                        return null;
                    }

                    if (controllerContext.Request.Method == HttpMethod.Get)
                    {
                        string actionNamePrefix = String.Format(CultureInfo.InvariantCulture, "Get{0}", _actionName);
                        actionName = actionMap.FindMatchingAction(actionNamePrefix + "From" + propertyAccessSegment.Property.Name);
                    }
                    break;
                default: break;
            }

            if (actionName != null)
            {
                if (odataPath.PathTemplate.StartsWith("~/entityset/key", StringComparison.Ordinal))
                {
                    EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                    IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                    KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                    controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                }

                controllerContext.RouteData.Values[ODataRouteConstants.DynamicProperty] = dynamicPropertSegment.PropertyName;
                var key = ODataParameterValue.ParameterValuePrefix + ODataRouteConstants.DynamicProperty;
                var value = new ODataParameterValue(dynamicPropertSegment.PropertyName, EdmLibHelpers.GetEdmPrimitiveTypeReferenceOrNull(typeof(string)));
                controllerContext.Request.ODataProperties().RoutingConventionsStore[key] = value;
                return actionName;
            }
            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            HttpMethod requestMethod = controllerContext.Request.Method;
            IHttpRouteData routeData = controllerContext.RouteData;

            if (!IsSupportedRequestMethod(requestMethod))
            {
                return null;
            }

            if (odataPath.PathTemplate == "~/entityset/key/navigation/$ref" ||
                odataPath.PathTemplate == "~/entityset/key/cast/navigation/$ref" ||
                odataPath.PathTemplate == "~/singleton/navigation/$ref" ||
                odataPath.PathTemplate == "~/singleton/cast/navigation/$ref")
            {
                NavigationPathSegment navigationSegment = (NavigationPathSegment)odataPath.Segments[odataPath.Segments.Count - 2];
                IEdmNavigationProperty navigationProperty = navigationSegment.NavigationProperty;
                IEdmEntityType declaringType = navigationProperty.DeclaringEntityType();

                string refActionName = FindRefActionName(actionMap, navigationProperty, declaringType, requestMethod);
                if (refActionName != null)
                {
                    if (odataPath.PathTemplate.StartsWith("~/entityset/key", StringComparison.Ordinal))
                    {
                        EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                        IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                        KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                        controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                    }

                    routeData.Values[ODataRouteConstants.NavigationProperty] = navigationSegment.NavigationProperty.Name;
                    return refActionName;
                }
            }
            else if ((requestMethod == HttpMethod.Delete) && (
                odataPath.PathTemplate == "~/entityset/key/navigation/key/$ref" ||
                odataPath.PathTemplate == "~/entityset/key/cast/navigation/key/$ref" ||
                odataPath.PathTemplate == "~/singleton/navigation/key/$ref" ||
                odataPath.PathTemplate == "~/singleton/cast/navigation/key/$ref"))
            {
                NavigationPathSegment navigationSegment = (NavigationPathSegment)odataPath.Segments[odataPath.Segments.Count - 3];
                IEdmNavigationProperty navigationProperty = navigationSegment.NavigationProperty;
                IEdmEntityType declaringType = navigationProperty.DeclaringEntityType();

                string refActionName = FindRefActionName(actionMap, navigationProperty, declaringType, requestMethod);
                if (refActionName != null)
                {
                    if (odataPath.PathTemplate.StartsWith("~/entityset/key", StringComparison.Ordinal))
                    {
                        EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                        IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                        KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                        controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                    }

                    routeData.Values[ODataRouteConstants.NavigationProperty] = navigationSegment.NavigationProperty.Name;

                    KeyValuePathSegment relatedKeySegment = odataPath.Segments.Last(e => e is KeyValuePathSegment) as KeyValuePathSegment;

                    IEdmEntityType navEntityType = navigationProperty.Type.AsCollection().ElementType().AsEntity().EntityDefinition();

                    controllerContext.AddKeyValueToRouteData(relatedKeySegment, navEntityType, ODataRouteConstants.RelatedKey);
                    return refActionName;
                }
            }

            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext,
            ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            if (controllerContext.Request.Method == HttpMethod.Get)
            {
                string actionName = null;
                BoundFunctionPathSegment function = null;
                switch (odataPath.PathTemplate)
                {
                    case "~/entityset/key/cast/function":
                    case "~/entityset/key/function":
                        function = odataPath.Segments.Last() as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: false);
                        if (actionName != null)
                        {
                            EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                            IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                            KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                            controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                        }
                        break;
                    case "~/entityset/key/cast/function/$count":
                    case "~/entityset/key/function/$count":
                        function = odataPath.Segments[odataPath.Segments.Count - 2] as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: false);
                        if (actionName != null)
                        {
                            EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                            IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                            KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                            controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                        }
                        break;
                    case "~/entityset/cast/function":
                    case "~/entityset/function":
                        function = odataPath.Segments.Last() as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: true);
                        break;
                    case "~/entityset/cast/function/$count":
                    case "~/entityset/function/$count":
                        function = odataPath.Segments[odataPath.Segments.Count - 2] as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: true);
                        break;
                    case "~/singleton/function":
                    case "~/singleton/cast/function":
                        function = odataPath.Segments.Last() as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: false);
                        break;
                    case "~/singleton/function/$count":
                    case "~/singleton/cast/function/$count":
                        function = odataPath.Segments[odataPath.Segments.Count - 2] as BoundFunctionPathSegment;
                        actionName = GetFunction(function).SelectAction(actionMap, isCollection: false);
                        break;
                }

                if (actionName != null)
                {
                    controllerContext.AddFunctionParameterToRouteData(function);
                    return actionName;
                }
            }

            return null;
        }
        /// <inheritdoc/>
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath == null)
            {
                throw Error.ArgumentNull("odataPath");
            }

            if (controllerContext == null)
            {
                throw Error.ArgumentNull("controllerContext");
            }

            if (actionMap == null)
            {
                throw Error.ArgumentNull("actionMap");
            }

            HttpMethod method = controllerContext.Request.Method;
            string actionNamePrefix = GetActionMethodPrefix(method);
            if (actionNamePrefix == null)
            {
                return null;
            }

            if (odataPath.PathTemplate == "~/entityset/key/navigation" ||
                odataPath.PathTemplate == "~/entityset/key/navigation/$count" ||
                odataPath.PathTemplate == "~/entityset/key/cast/navigation" ||
                odataPath.PathTemplate == "~/entityset/key/cast/navigation/$count" ||
                odataPath.PathTemplate == "~/singleton/navigation" ||
                odataPath.PathTemplate == "~/singleton/navigation/$count" ||
                odataPath.PathTemplate == "~/singleton/cast/navigation" ||
                odataPath.PathTemplate == "~/singleton/cast/navigation/$count")
            {
                NavigationPathSegment navigationSegment =
                    (odataPath.Segments.Last() as NavigationPathSegment) ??
                    odataPath.Segments[odataPath.Segments.Count - 2] as NavigationPathSegment;
                IEdmNavigationProperty navigationProperty = navigationSegment.NavigationProperty;
                IEdmEntityType declaringType = navigationProperty.DeclaringType as IEdmEntityType;

                // It is not valid to *Post* to any non-collection valued navigation property.
                if (navigationProperty.TargetMultiplicity() != EdmMultiplicity.Many &&
                    method == HttpMethod.Post)
                {
                    return null;
                }

                // It is not valid to *Put/Patch" to any collection-valued navigation property.
                if (navigationProperty.TargetMultiplicity() == EdmMultiplicity.Many &&
                    (method == HttpMethod.Put || "PATCH" == method.Method.ToUpperInvariant()))
                {
                    return null;
                }

                // *Get* is the only supported method for $count request.
                if (odataPath.Segments.Last() is CountPathSegment && method != HttpMethod.Get)
                {
                    return null;
                }

                if (declaringType != null)
                {
                    // e.g. Try GetNavigationPropertyFromDeclaringType first, then fallback on GetNavigationProperty action name
                    string actionName = actionMap.FindMatchingAction(
                        actionNamePrefix + navigationProperty.Name + "From" + declaringType.Name,
                        actionNamePrefix + navigationProperty.Name);

                    if (actionName != null)
                    {
                        if (odataPath.PathTemplate.StartsWith("~/entityset/key", StringComparison.Ordinal))
                        {
                            EntitySetPathSegment entitySetPathSegment = (EntitySetPathSegment)odataPath.Segments.First();
                            IEdmEntityType edmEntityType = entitySetPathSegment.EntitySetBase.EntityType();
                            KeyValuePathSegment keyValueSegment = (KeyValuePathSegment)odataPath.Segments[1];

                            controllerContext.AddKeyValueToRouteData(keyValueSegment, edmEntityType, ODataRouteConstants.Key);
                        }

                        return actionName;
                    }
                }
            }

            return null;
        }