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//---------------------------------------------------------------------
// <copyright file="EnumMember.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.Text;
using System.Diagnostics;
namespace System.Data.Metadata.Edm
{
/// <summary>
/// Represents an enumeration member.
/// </summary>
public sealed class EnumMember : MetadataItem
{
#region Fields
/// <summary>
/// The name of this enumeration member.
/// </summary>
private readonly string _name;
/// <summary>
/// The value of this enumeration member.
/// </summary>
private readonly object _value;
#endregion
#region Constructors
/// <summary>
/// Initializes a new instance of the <see cref="EnumMember"/> type by using the specified name and value.
/// </summary>
/// <param name="name">The name of this enumeration member. Must not be null or the empty string.</param>
/// <param name="value">The value of this enumeration member. </param>
/// <exception cref="System.ArgumentNullException">Thrown if name argument is null</exception>
/// <exception cref="System.ArgumentException">Thrown if name argument is empty string</exception>
internal EnumMember(string name, object value)
: base(MetadataFlags.Readonly)
{
EntityUtil.CheckStringArgument(name, "name");
Debug.Assert(value != null, "value != null");
Debug.Assert(value is SByte || value is Byte || value is Int16 || value is Int32 || value is Int64, "Unsupported type of enum member value.");
_name = name;
_value = value;
}
#endregion
#region Properties
/// <summary>
/// Gets the kind of this type.
/// </summary>
public override BuiltInTypeKind BuiltInTypeKind
{
get { return BuiltInTypeKind.EnumMember; }
}
/// <summary>
/// Gets the name of this enumeration member.
/// </summary>
[MetadataProperty(PrimitiveTypeKind.String, false)]
public string Name
{
get
{
return _name;
}
}
/// <summary>
/// Gets the value of this enumeration member.
/// </summary>
[MetadataProperty(BuiltInTypeKind.PrimitiveType, false)]
public object Value
{
get
{
return _value;
}
}
/// <summary>
/// Gets the identity for this item as a string
/// </summary>
internal override string Identity
{
get
{
return Name;
}
}
#endregion
#region Methods
/// <summary>
/// Overriding System.Object.ToString to provide better String representation for this type.
/// </summary>
public override string ToString()
{
return Name;
}
#endregion
}
}
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