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//---------------------------------------------------------------------
// <copyright file="EntityWithKeyStrategy.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//---------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.Objects.DataClasses;
using System.Diagnostics;
namespace System.Data.Objects.Internal
{
/// <summary>
/// Implementor of IEntityKeyStrategy for entities that implement IEntityWithKey. Getting and setting
/// the key is deferred to the entity itself.
/// </summary>
internal sealed class EntityWithKeyStrategy : IEntityKeyStrategy
{
private IEntityWithKey _entity;
/// <summary>
/// Creates a strategy object for the given entity. Keys will be stored in the entity.
/// </summary>
/// <param name="entity">The entity to use</param>
public EntityWithKeyStrategy(IEntityWithKey entity)
{
_entity = entity;
}
// See IEntityKeyStrategy
public EntityKey GetEntityKey()
{
return _entity.EntityKey;
}
// See IEntityKeyStrategy
public void SetEntityKey(EntityKey key)
{
_entity.EntityKey = key;
}
// See IEntityKeyStrategy
public EntityKey GetEntityKeyFromEntity()
{
return _entity.EntityKey;
}
}
}
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