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//------------------------------------------------------------------------------
// <copyright file="EntityDataSourceContainerNameItem.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner [....]
// @backupOwner [....]
//------------------------------------------------------------------------------
using System.Data.Metadata.Edm;
using System.Diagnostics;
namespace System.Web.UI.Design.WebControls
{
internal class EntityDataSourceContainerNameItem : IComparable<EntityDataSourceContainerNameItem>
{
// Only one of the following should be set. This is enforced through the constructors and the fact that these fields are readonly.
private readonly EntityContainer _entityContainer; // used when we have a real EntityContainer backing this item
private readonly string _unknownContainerName; // used when we have an unknown DefaultContainerName that we still want to include in the list
internal EntityDataSourceContainerNameItem(EntityContainer entityContainer)
{
Debug.Assert(entityContainer != null, "null entityContainer");
_entityContainer = entityContainer;
}
internal EntityDataSourceContainerNameItem(string unknownContainerName)
{
Debug.Assert(!String.IsNullOrEmpty(unknownContainerName), "null or empty unknownContainerName");
_unknownContainerName = unknownContainerName;
}
internal string EntityContainerName
{
get
{
if (_entityContainer != null)
{
return _entityContainer.Name;
}
else
{
return _unknownContainerName;
}
}
}
internal EntityContainer EntityContainer
{
get
{
// may be null if this represents an unknown container
return _entityContainer;
}
}
public override string ToString()
{
return this.EntityContainerName;
}
int IComparable<EntityDataSourceContainerNameItem>.CompareTo(EntityDataSourceContainerNameItem other)
{
return (String.Compare(this.EntityContainerName, other.EntityContainerName, StringComparison.OrdinalIgnoreCase));
}
}
}
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