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