152 lines
4.5 KiB
C#
152 lines
4.5 KiB
C#
//---------------------------------------------------------------------
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// <copyright file="EdmMember.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//
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// @owner [....]
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// @backupOwner [....]
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//---------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using System.Diagnostics;
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using System.Text;
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namespace System.Data.Metadata.Edm
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{
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/// <summary>
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/// Represents the edm member class
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/// </summary>
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
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public abstract class EdmMember : MetadataItem
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{
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/// <summary>
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/// Initializes a new instance of EdmMember class
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/// </summary>
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/// <param name="name">name of the member</param>
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/// <param name="memberTypeUsage">type information containing info about member's type and its facet</param>
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internal EdmMember(string name, TypeUsage memberTypeUsage)
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{
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EntityUtil.CheckStringArgument(name, "name");
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EntityUtil.GenericCheckArgumentNull(memberTypeUsage, "memberTypeUsage");
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_name = name;
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_typeUsage = memberTypeUsage;
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}
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private TypeUsage _typeUsage;
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private string _name;
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private StructuralType _declaringType;
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/// <summary>
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/// Returns the identity of the member
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/// </summary>
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internal override string Identity
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{
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get
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{
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return this.Name;
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}
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}
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/// <summary>
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/// Returns the name of the member
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/// </summary>
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[MetadataProperty(PrimitiveTypeKind.String, false)]
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public String Name
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{
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get
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{
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return _name;
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}
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}
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/// <summary>
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/// Returns the declaring type of the member
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/// </summary>
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public StructuralType DeclaringType
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{
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get
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{
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return _declaringType;
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}
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}
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/// <summary>
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/// Returns the TypeUsage object containing the type information and facets
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/// about the type
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/// </summary>
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[MetadataProperty(BuiltInTypeKind.TypeUsage, false)]
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public TypeUsage TypeUsage
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{
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get
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{
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return _typeUsage;
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}
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}
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/// <summary>
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/// Overriding System.Object.ToString to provide better String representation
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/// for this type.
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/// </summary>
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public override string ToString()
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{
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return Name;
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}
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/// <summary>
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/// Sets the member to read only mode. Once this is done, there are no changes
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/// that can be done to this class
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/// </summary>
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internal override void SetReadOnly()
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{
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if (!IsReadOnly)
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{
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base.SetReadOnly();
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// TypeUsage is always readonly, no need to set it
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}
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}
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/// <summary>
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/// Change the declaring type without doing fixup in the member collection
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/// </summary>
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internal void ChangeDeclaringTypeWithoutCollectionFixup(StructuralType newDeclaringType)
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{
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_declaringType = newDeclaringType;
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}
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/// <summary>
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/// Tells whether this member is marked as a Computed member in the EDM definition
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/// </summary>
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internal bool IsStoreGeneratedComputed
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{
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get
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{
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Facet item=null;
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if (TypeUsage.Facets.TryGetValue(EdmProviderManifest.StoreGeneratedPatternFacetName, false, out item))
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{
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return ((StoreGeneratedPattern)item.Value) == StoreGeneratedPattern.Computed;
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}
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return false;
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}
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}
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/// <summary>
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/// Tells whether this member's Store generated pattern is marked as Identity in the EDM definition
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/// </summary>
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internal bool IsStoreGeneratedIdentity
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{
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get
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{
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Facet item = null;
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if (TypeUsage.Facets.TryGetValue(EdmProviderManifest.StoreGeneratedPatternFacetName, false, out item))
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{
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return ((StoreGeneratedPattern)item.Value) == StoreGeneratedPattern.Identity;
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}
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return false;
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}
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}
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}
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}
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