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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / ComplexType.cs / 1305376 / ComplexType.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Common; using System.Threading; using System.Diagnostics; namespace System.Data.Metadata.Edm { ////// Represent the Edm Complex Type /// public class ComplexType : StructuralType { #region Constructors ////// Initializes a new instance of Complex Type with the given properties /// /// The name of the complex type /// The namespace name of the type /// The version of this type /// dataSpace in which this ComplexType belongs to ///If either name, namespace or version arguments are null internal ComplexType(string name, string namespaceName, DataSpace dataSpace) : base(name, namespaceName, dataSpace) { } ////// Initializes a new instance of Complex Type - required for bootstraping code /// internal ComplexType() { // No initialization of item attributes in here, it's used as a pass thru in the case for delay population // of item attributes } #endregion #region Fields private ReadOnlyMetadataCollection_properties; #endregion #region Properties /// /// Returns the kind of the type /// public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.ComplexType; } } ////// Returns just the properties from the collection /// of members on this type /// public ReadOnlyMetadataCollectionProperties { get { Debug.Assert(IsReadOnly, "this is a wrapper around this.Members, don't call it during metadata loading, only call it after the metadata is set to readonly"); if (null == _properties) { Interlocked.CompareExchange(ref _properties, new FilteredReadOnlyMetadataCollection ( this.Members, Helper.IsEdmProperty), null); } return _properties; } } #endregion #region Methods /// /// Validates a EdmMember object to determine if it can be added to this type's /// Members collection. If this method returns without throwing, it is assumed /// the member is valid. /// /// The member to validate ///Thrown if the member is not a EdmProperty internal override void ValidateMemberForAdd(EdmMember member) { Debug.Assert(Helper.IsEdmProperty(member) || Helper.IsNavigationProperty(member), "Only members of type Property may be added to ComplexType."); } #endregion } internal sealed class ClrComplexType : ComplexType { ///cached CLR type handle, allowing the Type reference to be GC'd private readonly System.RuntimeTypeHandle _type; ///cached dynamic method to construct a CLR instance private Delegate _constructor; private readonly string _cspaceTypeName; ////// Initializes a new instance of Complex Type with properties from the type. /// /// The CLR type to construct from internal ClrComplexType(Type clrType, string cspaceNamespaceName, string cspaceTypeName) : base(EntityUtil.GenericCheckArgumentNull(clrType, "clrType").Name, clrType.Namespace ?? string.Empty, DataSpace.OSpace) { System.Diagnostics.Debug.Assert(!String.IsNullOrEmpty(cspaceNamespaceName) && !String.IsNullOrEmpty(cspaceTypeName), "Mapping information must never be null"); _type = clrType.TypeHandle; _cspaceTypeName = cspaceNamespaceName + "." + cspaceTypeName; this.Abstract = clrType.IsAbstract; } internal static ClrComplexType CreateReadonlyClrComplexType(Type clrType, string cspaceNamespaceName, string cspaceTypeName) { ClrComplexType type = new ClrComplexType(clrType, cspaceNamespaceName, cspaceTypeName); type.SetReadOnly(); return type; } ///cached dynamic method to construct a CLR instance internal Delegate Constructor { get { return _constructor; } set { // It doesn't matter which delegate wins, but only one should be jitted Interlocked.CompareExchange(ref _constructor, value, null); } } ////// internal override System.Type ClrType { get { return Type.GetTypeFromHandle(_type); } } internal string CSpaceTypeName { get { return _cspaceTypeName; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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