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/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / ItemCollection.cs / 1 / ItemCollection.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.ObjectModel; using System.Collections.Generic; using System.Data.Common; using System.Diagnostics; using System.Text; using System.Xml.Serialization; using System.Xml; using System.Xml.Schema; using System.Globalization; using System.IO; using System.Data.Common.Utils; using System.Threading; namespace System.Data.Metadata.Edm { ////// Class for representing a collection of items. /// Most of the implemetation for actual maintainance of the collection is /// done by MetadataCollection /// public abstract class ItemCollection : ReadOnlyMetadataCollection{ #region Constructors /// /// The default constructor for ItemCollection /// internal ItemCollection(DataSpace dataspace) : base(new MetadataCollection()) { _space = dataspace; } #endregion #region Fields private readonly DataSpace _space; private Dictionary > _functionLookUpTable; #endregion #region Properties /// /// Dataspace associated with ItemCollection /// public DataSpace DataSpace { get { return this._space; } } ////// Return the function lookUpTable /// internal Dictionary> FunctionLookUpTable { get { if (_functionLookUpTable == null) { Dictionary > functionLookUpTable = PopulateFunctionLookUpTable(this); Interlocked.CompareExchange(ref _functionLookUpTable, functionLookUpTable, null); } return _functionLookUpTable; } } #endregion #region Methods /// /// Adds an item to the collection /// /// The item to add to the list ///Thrown if item argument is null ///Thrown if the item passed in or the collection itself instance is in ReadOnly state ///Thrown if the item that is being added already belongs to another ItemCollection ///Thrown if the ItemCollection already contains an item with the same identity internal void AddInternal(GlobalItem item) { Debug.Assert(item.IsReadOnly, "The item is not readonly, it should be by the time it is added to the item collection"); Debug.Assert(item.DataSpace == this.DataSpace); base.Source.Add(item); } ////// Adds a collection of items to the collection /// /// The items to add to the list ///Thrown if item argument is null ///Thrown if the item passed in or the collection itself instance is in ReadOnly state ///Thrown if the item that is being added already belongs to another ItemCollection ///Thrown if the ItemCollection already contains an item with the same identity internal bool AtomicAddRange(Listitems) { #if DEBUG // We failed to add, so undo the setting of the ItemCollection reference foreach (GlobalItem item in items) { Debug.Assert(item.IsReadOnly, "The item is not readonly, it should be by the time it is added to the item collection"); Debug.Assert(item.DataSpace == this.DataSpace); } #endif if (base.Source.AtomicAddRange(items)) { return true; } return false; } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// ////// Identity of the item to look up for /// returns the item if a match is found, otherwise throwns an exception ///Thrown if identity argument passed in is null ///Thrown if the Collection does not have an item with the given identity public T GetItem(string identity) where T : GlobalItem { return this.GetItem (identity, false /*ignoreCase*/); } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// Returns null if the item is not found. /// ////// /// /// /// if identity argument is null public bool TryGetItem(string identity, out T item) where T : GlobalItem { return this.TryGetItem (identity, false /*ignorecase*/, out item); } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// Returns null if the item is not found. /// ////// identity of the type to look up for /// true for case-insensitive lookup /// item with the given identity if a match is found, otherwise returns null /// returns true if a match is found, otherwise returns false ///if identity argument is null public bool TryGetItem(string identity, bool ignoreCase, out T item) where T : GlobalItem { GlobalItem outItem = null; TryGetValue(identity, ignoreCase, out outItem); item = outItem as T; return item != null; } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity with either case sensitive or case insensitive search /// ////// identity of the type to look up for /// true for case-insensitive lookup /// returns item if a match is found, otherwise returns throws an argument exception ///Thrown if identity argument passed in is null ///Thrown if no item is found with the given identity public T GetItem(string identity, bool ignoreCase) where T : GlobalItem { T item; if (TryGetItem (identity, ignoreCase, out item)) { return item; } throw EntityUtil.ItemInvalidIdentity(identity, "identity"); } /// /// Returns ReadOnlyCollection of the Items of the given type /// in the item collection. /// ////// public System.Collections.ObjectModel.ReadOnlyCollection GetItems () where T : GlobalItem { List list = new List (); foreach (GlobalItem item in this) { T stronglyTypedItem = item as T; if (stronglyTypedItem != null) { list.Add(stronglyTypedItem); } } return list.AsReadOnly(); } /// /// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type ///Returns null if no match found. ///Thrown if name or namespaceName arguments passed in are null ///Thrown if the ItemCollection for this space does not have a type with the given name and namespaceName public EdmType GetType(string name, string namespaceName) { return this.GetType(name, namespaceName, false /*ignoreCase*/); } ////// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type /// The type that needs to be filled with the return value ///Returns null if no match found. ///if name or namespaceName argument is null public bool TryGetType(string name, string namespaceName, out EdmType type) { return this.TryGetType(name, namespaceName, false /*ignoreCase*/, out type); } ////// Search for a type metadata with the specified key. /// /// name of the type /// namespace of the type /// true for case-insensitive lookup ///Returns null if no match found. ///Thrown if name or namespaceName arguments passed in are null public EdmType GetType(string name, string namespaceName, bool ignoreCase) { EntityUtil.GenericCheckArgumentNull(name, "name"); EntityUtil.GenericCheckArgumentNull(namespaceName, "namespaceName"); return GetItem(EdmType.CreateEdmTypeIdentity(namespaceName, name), ignoreCase); } /// /// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type /// true for case-insensitive lookup /// The type that needs to be filled with the return value ///Returns null if no match found. ///if name or namespaceName argument is null public bool TryGetType(string name, string namespaceName, bool ignoreCase, out EdmType type) { EntityUtil.GenericCheckArgumentNull(name, "name"); EntityUtil.GenericCheckArgumentNull(namespaceName, "namespaceName"); GlobalItem item = null; TryGetValue(EdmType.CreateEdmTypeIdentity(namespaceName, name), ignoreCase, out item); type = item as EdmType; return type != null; } ////// Get all the overloads of the function with the given name /// /// The full name of the function ///A collection of all the functions with the given name in the given data space ///Thrown if functionaName argument passed in is null public System.Collections.ObjectModel.ReadOnlyCollectionGetFunctions(string functionName) { return this.GetFunctions(functionName, false /*ignoreCase*/); } /// /// Get all the overloads of the function with the given name /// /// The full name of the function /// true for case-insensitive lookup ///A collection of all the functions with the given name in the given data space ///Thrown if functionaName argument passed in is null public System.Collections.ObjectModel.ReadOnlyCollectionGetFunctions(string functionName, bool ignoreCase) { return GetFunctions(this.FunctionLookUpTable, functionName, ignoreCase); } /// /// Look for the functions in the given collection and /// returns all the functions with the given name /// /// /// /// ///protected static System.Collections.ObjectModel.ReadOnlyCollection GetFunctions( Dictionary > functionCollection, string functionName, bool ignoreCase) { System.Collections.ObjectModel.ReadOnlyCollection functionOverloads; if (functionCollection.TryGetValue(functionName, out functionOverloads)) { if (ignoreCase) { return functionOverloads; } return GetCaseSensitiveFunctions(functionOverloads, functionName); } return Helper.EmptyEdmFunctionReadOnlyCollection; } internal static System.Collections.ObjectModel.ReadOnlyCollection GetCaseSensitiveFunctions( System.Collections.ObjectModel.ReadOnlyCollection functionOverloads, string functionName) { // For case-sensitive match, first check if there are anything with a different case // its very rare to have functions with different case. So optimizing the case where all // functions are of same case // Else create a new list with the functions with the exact name List caseSensitiveFunctionOverloads = new List (functionOverloads.Count); for (int i = 0; i < functionOverloads.Count; i++) { if (functionOverloads[i].FullName == functionName) { caseSensitiveFunctionOverloads.Add(functionOverloads[i]); } } // If there are no functions with different case, just return the collection if (caseSensitiveFunctionOverloads.Count != functionOverloads.Count) { functionOverloads = caseSensitiveFunctionOverloads.AsReadOnly(); } return functionOverloads; } /// /// Gets the function as specified by the function key /// /// Name of the function /// types of the parameters /// true for case-insensitive lookup /// The function that needs to be returned ///The function as specified in the function key or null ///if functionName or parameterTypes argument is null ///if no function is found with the given name or with given input parameters internal bool TryGetFunction(string functionName, TypeUsage[] parameterTypes, bool ignoreCase, out EdmFunction function) { EntityUtil.GenericCheckArgumentNull(functionName, "functionName"); EntityUtil.GenericCheckArgumentNull(parameterTypes, "parameterTypes"); string functionIdentity = ComputeFunctionIdentity(functionName, parameterTypes); GlobalItem item = null; function = null; if (TryGetValue(functionIdentity, ignoreCase, out item) && Helper.IsEdmFunction(item)) { function = (EdmFunction)item; return true; } return false; } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container ///The EntityContainer ///Thrown if name argument passed in is null public EntityContainer GetEntityContainer(string name) { EntityUtil.GenericCheckArgumentNull(name, "name"); return this.GetEntityContainer(name, false /*ignoreCase*/); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// ///if name argument is null public bool TryGetEntityContainer(string name, out EntityContainer entityContainer) { EntityUtil.GenericCheckArgumentNull(name, "name"); return this.TryGetEntityContainer(name, false /*ignoreCase*/, out entityContainer); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// true for case-insensitive lookup ///The EntityContainer ///Thrown if name argument passed in is null ///Thrown if no entity container with the given name is found public EntityContainer GetEntityContainer(string name, bool ignoreCase) { EntityContainer container = GetValue(name, ignoreCase) as EntityContainer; if (null != container) { return container; } throw EntityUtil.ItemInvalidIdentity(name, "name"); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// true for case-insensitive lookup /// ///if name argument is null public bool TryGetEntityContainer(string name, bool ignoreCase, out EntityContainer entityContainer) { EntityUtil.GenericCheckArgumentNull(name, "name"); GlobalItem item = null; if (TryGetValue(name, ignoreCase, out item) && Helper.IsEntityContainer(item)) { entityContainer = (EntityContainer)item; return true; } entityContainer = null; return false; } ////// Given the canonical primitive type, get the mapping primitive type in the given dataspace /// /// canonical primitive type ///The mapped scalar type internal virtual PrimitiveType GetMappedPrimitiveType(PrimitiveTypeKind primitiveTypeKind) { //The method needs to be overloaded on methods that support this throw System.Data.Entity.Error.NotSupported(); } ////// Determines whether this item collection is equivalent to another. At present, we look only /// at object reference equivalence. This is a somewhat reasonable approximation when caching /// is enabled, because collections are identical when their source resources (including /// provider) are known to be identical. /// /// Collection to compare. ///true if the collections are equivalent; false otherwise internal virtual bool MetadataEquals(ItemCollection other) { return Object.ReferenceEquals(this, other); } ////// Computes the function identity from the list of paramter types /// /// /// ///static private string ComputeFunctionIdentity(string functionName, TypeUsage[] functionParameters) { return EdmFunction.BuildIdentity(functionName, ConvertTypeUsageEnumerableToEdmTypeEnumerable(functionParameters)); } static private IEnumerable ConvertTypeUsageEnumerableToEdmTypeEnumerable(IEnumerable typeUsages) { foreach (TypeUsage usage in typeUsages) { yield return usage.EdmType; } } static private Dictionary > PopulateFunctionLookUpTable(ItemCollection itemCollection) { var tempFunctionLookUpTable = new Dictionary >(StringComparer.OrdinalIgnoreCase); foreach (EdmFunction function in itemCollection.GetItems ()) { List functionList; if (!tempFunctionLookUpTable.TryGetValue(function.FullName, out functionList)) { functionList = new List (); tempFunctionLookUpTable[function.FullName] = functionList; } functionList.Add(function); } var functionLookUpTable = new Dictionary >(StringComparer.OrdinalIgnoreCase); foreach (List functionList in tempFunctionLookUpTable.Values) { functionLookUpTable.Add(functionList[0].FullName, new System.Collections.ObjectModel.ReadOnlyCollection (functionList.ToArray())); } return functionLookUpTable; } #endregion }//---- ItemCollection }//---- // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.ObjectModel; using System.Collections.Generic; using System.Data.Common; using System.Diagnostics; using System.Text; using System.Xml.Serialization; using System.Xml; using System.Xml.Schema; using System.Globalization; using System.IO; using System.Data.Common.Utils; using System.Threading; namespace System.Data.Metadata.Edm { ////// Class for representing a collection of items. /// Most of the implemetation for actual maintainance of the collection is /// done by MetadataCollection /// public abstract class ItemCollection : ReadOnlyMetadataCollection{ #region Constructors /// /// The default constructor for ItemCollection /// internal ItemCollection(DataSpace dataspace) : base(new MetadataCollection()) { _space = dataspace; } #endregion #region Fields private readonly DataSpace _space; private Dictionary > _functionLookUpTable; #endregion #region Properties /// /// Dataspace associated with ItemCollection /// public DataSpace DataSpace { get { return this._space; } } ////// Return the function lookUpTable /// internal Dictionary> FunctionLookUpTable { get { if (_functionLookUpTable == null) { Dictionary > functionLookUpTable = PopulateFunctionLookUpTable(this); Interlocked.CompareExchange(ref _functionLookUpTable, functionLookUpTable, null); } return _functionLookUpTable; } } #endregion #region Methods /// /// Adds an item to the collection /// /// The item to add to the list ///Thrown if item argument is null ///Thrown if the item passed in or the collection itself instance is in ReadOnly state ///Thrown if the item that is being added already belongs to another ItemCollection ///Thrown if the ItemCollection already contains an item with the same identity internal void AddInternal(GlobalItem item) { Debug.Assert(item.IsReadOnly, "The item is not readonly, it should be by the time it is added to the item collection"); Debug.Assert(item.DataSpace == this.DataSpace); base.Source.Add(item); } ////// Adds a collection of items to the collection /// /// The items to add to the list ///Thrown if item argument is null ///Thrown if the item passed in or the collection itself instance is in ReadOnly state ///Thrown if the item that is being added already belongs to another ItemCollection ///Thrown if the ItemCollection already contains an item with the same identity internal bool AtomicAddRange(Listitems) { #if DEBUG // We failed to add, so undo the setting of the ItemCollection reference foreach (GlobalItem item in items) { Debug.Assert(item.IsReadOnly, "The item is not readonly, it should be by the time it is added to the item collection"); Debug.Assert(item.DataSpace == this.DataSpace); } #endif if (base.Source.AtomicAddRange(items)) { return true; } return false; } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// ////// Identity of the item to look up for /// returns the item if a match is found, otherwise throwns an exception ///Thrown if identity argument passed in is null ///Thrown if the Collection does not have an item with the given identity public T GetItem(string identity) where T : GlobalItem { return this.GetItem (identity, false /*ignoreCase*/); } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// Returns null if the item is not found. /// ////// /// /// /// if identity argument is null public bool TryGetItem(string identity, out T item) where T : GlobalItem { return this.TryGetItem (identity, false /*ignorecase*/, out item); } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity. /// Returns null if the item is not found. /// ////// identity of the type to look up for /// true for case-insensitive lookup /// item with the given identity if a match is found, otherwise returns null /// returns true if a match is found, otherwise returns false ///if identity argument is null public bool TryGetItem(string identity, bool ignoreCase, out T item) where T : GlobalItem { GlobalItem outItem = null; TryGetValue(identity, ignoreCase, out outItem); item = outItem as T; return item != null; } /// /// Returns strongly typed MetadataItem from the collection that has /// the passed in identity with either case sensitive or case insensitive search /// ////// identity of the type to look up for /// true for case-insensitive lookup /// returns item if a match is found, otherwise returns throws an argument exception ///Thrown if identity argument passed in is null ///Thrown if no item is found with the given identity public T GetItem(string identity, bool ignoreCase) where T : GlobalItem { T item; if (TryGetItem (identity, ignoreCase, out item)) { return item; } throw EntityUtil.ItemInvalidIdentity(identity, "identity"); } /// /// Returns ReadOnlyCollection of the Items of the given type /// in the item collection. /// ////// public System.Collections.ObjectModel.ReadOnlyCollection GetItems () where T : GlobalItem { List list = new List (); foreach (GlobalItem item in this) { T stronglyTypedItem = item as T; if (stronglyTypedItem != null) { list.Add(stronglyTypedItem); } } return list.AsReadOnly(); } /// /// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type ///Returns null if no match found. ///Thrown if name or namespaceName arguments passed in are null ///Thrown if the ItemCollection for this space does not have a type with the given name and namespaceName public EdmType GetType(string name, string namespaceName) { return this.GetType(name, namespaceName, false /*ignoreCase*/); } ////// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type /// The type that needs to be filled with the return value ///Returns null if no match found. ///if name or namespaceName argument is null public bool TryGetType(string name, string namespaceName, out EdmType type) { return this.TryGetType(name, namespaceName, false /*ignoreCase*/, out type); } ////// Search for a type metadata with the specified key. /// /// name of the type /// namespace of the type /// true for case-insensitive lookup ///Returns null if no match found. ///Thrown if name or namespaceName arguments passed in are null public EdmType GetType(string name, string namespaceName, bool ignoreCase) { EntityUtil.GenericCheckArgumentNull(name, "name"); EntityUtil.GenericCheckArgumentNull(namespaceName, "namespaceName"); return GetItem(EdmType.CreateEdmTypeIdentity(namespaceName, name), ignoreCase); } /// /// Search for a type metadata with the specified name and namespace name in the given space. /// /// name of the type /// namespace of the type /// true for case-insensitive lookup /// The type that needs to be filled with the return value ///Returns null if no match found. ///if name or namespaceName argument is null public bool TryGetType(string name, string namespaceName, bool ignoreCase, out EdmType type) { EntityUtil.GenericCheckArgumentNull(name, "name"); EntityUtil.GenericCheckArgumentNull(namespaceName, "namespaceName"); GlobalItem item = null; TryGetValue(EdmType.CreateEdmTypeIdentity(namespaceName, name), ignoreCase, out item); type = item as EdmType; return type != null; } ////// Get all the overloads of the function with the given name /// /// The full name of the function ///A collection of all the functions with the given name in the given data space ///Thrown if functionaName argument passed in is null public System.Collections.ObjectModel.ReadOnlyCollectionGetFunctions(string functionName) { return this.GetFunctions(functionName, false /*ignoreCase*/); } /// /// Get all the overloads of the function with the given name /// /// The full name of the function /// true for case-insensitive lookup ///A collection of all the functions with the given name in the given data space ///Thrown if functionaName argument passed in is null public System.Collections.ObjectModel.ReadOnlyCollectionGetFunctions(string functionName, bool ignoreCase) { return GetFunctions(this.FunctionLookUpTable, functionName, ignoreCase); } /// /// Look for the functions in the given collection and /// returns all the functions with the given name /// /// /// /// ///protected static System.Collections.ObjectModel.ReadOnlyCollection GetFunctions( Dictionary > functionCollection, string functionName, bool ignoreCase) { System.Collections.ObjectModel.ReadOnlyCollection functionOverloads; if (functionCollection.TryGetValue(functionName, out functionOverloads)) { if (ignoreCase) { return functionOverloads; } return GetCaseSensitiveFunctions(functionOverloads, functionName); } return Helper.EmptyEdmFunctionReadOnlyCollection; } internal static System.Collections.ObjectModel.ReadOnlyCollection GetCaseSensitiveFunctions( System.Collections.ObjectModel.ReadOnlyCollection functionOverloads, string functionName) { // For case-sensitive match, first check if there are anything with a different case // its very rare to have functions with different case. So optimizing the case where all // functions are of same case // Else create a new list with the functions with the exact name List caseSensitiveFunctionOverloads = new List (functionOverloads.Count); for (int i = 0; i < functionOverloads.Count; i++) { if (functionOverloads[i].FullName == functionName) { caseSensitiveFunctionOverloads.Add(functionOverloads[i]); } } // If there are no functions with different case, just return the collection if (caseSensitiveFunctionOverloads.Count != functionOverloads.Count) { functionOverloads = caseSensitiveFunctionOverloads.AsReadOnly(); } return functionOverloads; } /// /// Gets the function as specified by the function key /// /// Name of the function /// types of the parameters /// true for case-insensitive lookup /// The function that needs to be returned ///The function as specified in the function key or null ///if functionName or parameterTypes argument is null ///if no function is found with the given name or with given input parameters internal bool TryGetFunction(string functionName, TypeUsage[] parameterTypes, bool ignoreCase, out EdmFunction function) { EntityUtil.GenericCheckArgumentNull(functionName, "functionName"); EntityUtil.GenericCheckArgumentNull(parameterTypes, "parameterTypes"); string functionIdentity = ComputeFunctionIdentity(functionName, parameterTypes); GlobalItem item = null; function = null; if (TryGetValue(functionIdentity, ignoreCase, out item) && Helper.IsEdmFunction(item)) { function = (EdmFunction)item; return true; } return false; } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container ///The EntityContainer ///Thrown if name argument passed in is null public EntityContainer GetEntityContainer(string name) { EntityUtil.GenericCheckArgumentNull(name, "name"); return this.GetEntityContainer(name, false /*ignoreCase*/); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// ///if name argument is null public bool TryGetEntityContainer(string name, out EntityContainer entityContainer) { EntityUtil.GenericCheckArgumentNull(name, "name"); return this.TryGetEntityContainer(name, false /*ignoreCase*/, out entityContainer); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// true for case-insensitive lookup ///The EntityContainer ///Thrown if name argument passed in is null ///Thrown if no entity container with the given name is found public EntityContainer GetEntityContainer(string name, bool ignoreCase) { EntityContainer container = GetValue(name, ignoreCase) as EntityContainer; if (null != container) { return container; } throw EntityUtil.ItemInvalidIdentity(name, "name"); } ////// Get an entity container based upon the strong name of the container /// If no entity container is found, returns null, else returns the first one/// /// name of the entity container /// true for case-insensitive lookup /// ///if name argument is null public bool TryGetEntityContainer(string name, bool ignoreCase, out EntityContainer entityContainer) { EntityUtil.GenericCheckArgumentNull(name, "name"); GlobalItem item = null; if (TryGetValue(name, ignoreCase, out item) && Helper.IsEntityContainer(item)) { entityContainer = (EntityContainer)item; return true; } entityContainer = null; return false; } ////// Given the canonical primitive type, get the mapping primitive type in the given dataspace /// /// canonical primitive type ///The mapped scalar type internal virtual PrimitiveType GetMappedPrimitiveType(PrimitiveTypeKind primitiveTypeKind) { //The method needs to be overloaded on methods that support this throw System.Data.Entity.Error.NotSupported(); } ////// Determines whether this item collection is equivalent to another. At present, we look only /// at object reference equivalence. This is a somewhat reasonable approximation when caching /// is enabled, because collections are identical when their source resources (including /// provider) are known to be identical. /// /// Collection to compare. ///true if the collections are equivalent; false otherwise internal virtual bool MetadataEquals(ItemCollection other) { return Object.ReferenceEquals(this, other); } ////// Computes the function identity from the list of paramter types /// /// /// ///static private string ComputeFunctionIdentity(string functionName, TypeUsage[] functionParameters) { return EdmFunction.BuildIdentity(functionName, ConvertTypeUsageEnumerableToEdmTypeEnumerable(functionParameters)); } static private IEnumerable ConvertTypeUsageEnumerableToEdmTypeEnumerable(IEnumerable typeUsages) { foreach (TypeUsage usage in typeUsages) { yield return usage.EdmType; } } static private Dictionary > PopulateFunctionLookUpTable(ItemCollection itemCollection) { var tempFunctionLookUpTable = new Dictionary >(StringComparer.OrdinalIgnoreCase); foreach (EdmFunction function in itemCollection.GetItems ()) { List functionList; if (!tempFunctionLookUpTable.TryGetValue(function.FullName, out functionList)) { functionList = new List (); tempFunctionLookUpTable[function.FullName] = functionList; } functionList.Add(function); } var functionLookUpTable = new Dictionary >(StringComparer.OrdinalIgnoreCase); foreach (List functionList in tempFunctionLookUpTable.Values) { functionLookUpTable.Add(functionList[0].FullName, new System.Collections.ObjectModel.ReadOnlyCollection (functionList.ToArray())); } return functionLookUpTable; } #endregion }//---- ItemCollection }//---- // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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