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//---------------------------------------------------------------------
// <copyright file="TargetPerspective.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner [....]
// @backupOwner [....]
//---------------------------------------------------------------------
namespace System.Data.Metadata.Edm
{
using System.Collections.Generic;
using System.Globalization;
/// <summary>
/// Internal helper class for query
/// </summary>
internal class TargetPerspective : Perspective
{
#region Constructors
/// <summary>
/// Creates a new instance of perspective class so that query can work
/// ignorant of all spaces
/// </summary>
/// <param name="metadataWorkspace">runtime metadata container</param>
internal TargetPerspective(MetadataWorkspace metadataWorkspace)
: base(metadataWorkspace, TargetPerspective.TargetPerspectiveDataSpace)
{
_modelPerspective = new ModelPerspective(metadataWorkspace);
}
#endregion
#region Fields
internal const DataSpace TargetPerspectiveDataSpace = DataSpace.SSpace;
// TargetPerspective uses a ModelPerspective for a second lookup in type lookup
private ModelPerspective _modelPerspective;
#endregion
#region Methods
/// <summary>
/// Look up a type in the target data space based upon the fullName
/// </summary>
/// <param name="fullName">fullName</param>
/// <param name="ignoreCase">true for case-insensitive lookup</param>
/// <param name="usage"></param>
/// <returns>a list of types that have the specified full name but may differ by strong name</returns>
internal override bool TryGetTypeByName(string fullName, bool ignoreCase, out TypeUsage usage)
{
EntityUtil.CheckStringArgument(fullName, "fullName");
EdmType edmType = null;
if (this.MetadataWorkspace.TryGetItem<EdmType>(fullName, ignoreCase, this.TargetDataspace, out edmType))
{
usage = TypeUsage.Create(edmType);
usage = Helper.GetModelTypeUsage(usage);
return true;
}
return _modelPerspective.TryGetTypeByName(fullName, ignoreCase, out usage);
}
/// <summary>
/// Returns the entity container in CSpace or SSpace
/// </summary>
/// <param name="name"></param>
/// <param name="ignoreCase"></param>
/// <param name="entityContainer"></param>
/// <returns></returns>
internal override bool TryGetEntityContainer(string name, bool ignoreCase, out EntityContainer entityContainer)
{
if (!base.TryGetEntityContainer(name, ignoreCase, out entityContainer))
{
return _modelPerspective.TryGetEntityContainer(name, ignoreCase, out entityContainer);
}
return true;
}
#endregion
}
}
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