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//---------------------------------------------------------------------
// <copyright file="ModelPerspective.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner Microsoft
// @backupOwner Microsoft
//---------------------------------------------------------------------
namespace System.Data.Metadata.Edm
{
using System.Collections.Generic;
using System.Globalization;
/// <summary>
/// Internal helper class for query
/// </summary>
internal class ModelPerspective : Perspective
{
#region Contructors
/// <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 ModelPerspective(MetadataWorkspace metadataWorkspace)
: base(metadataWorkspace, DataSpace.CSpace)
{
}
#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="typeUsage">The type usage object to return</param>
/// <returns>True if the retrieval succeeded</returns>
internal override bool TryGetTypeByName(string fullName, bool ignoreCase, out TypeUsage typeUsage )
{
EntityUtil.CheckStringArgument(fullName, "fullName");
typeUsage = null;
EdmType edmType = null;
if (this.MetadataWorkspace.TryGetItem<EdmType>(fullName, ignoreCase, this.TargetDataspace, out edmType))
{
if (Helper.IsPrimitiveType(edmType))
{
typeUsage = this.MetadataWorkspace.GetCanonicalModelTypeUsage(((PrimitiveType)edmType).PrimitiveTypeKind);
}
else
{
typeUsage = TypeUsage.Create(edmType);
}
}
return typeUsage != null;
}
#endregion
}
}
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