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//---------------------------------------------------------------------
// <copyright file="FacetValues.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner Microsoft
// @backupOwner Microsoft
//---------------------------------------------------------------------
using System.Data.Common;
using System.Diagnostics;
namespace System.Data.Metadata.Edm
{
internal class FacetValues
{
private FacetValueContainer<bool?> _nullable;
private FacetValueContainer<Int32?> _maxLength;
private FacetValueContainer<bool?> _unicode;
private FacetValueContainer<bool?> _fixedLength;
private FacetValueContainer<byte?> _precision;
private FacetValueContainer<byte?> _scale;
internal FacetValueContainer<bool?> Nullable
{
set { _nullable = value; }
}
internal FacetValueContainer<Int32?> MaxLength
{
set { _maxLength = value; }
}
internal FacetValueContainer<bool?> Unicode
{
set { _unicode = value; }
}
internal FacetValueContainer<bool?> FixedLength
{
set { _fixedLength = value; }
}
internal FacetValueContainer<byte?> Precision
{
set { _precision = value; }
}
internal FacetValueContainer<byte?> Scale
{
set { _scale = value; }
}
internal bool TryGetFacet(FacetDescription description, out Facet facet)
{
if (description.FacetName == DbProviderManifest.NullableFacetName)
{
if (_nullable.HasValue)
{
facet = Facet.Create(description, _nullable.GetValueAsObject());
return true;
}
}
else if (description.FacetName == DbProviderManifest.MaxLengthFacetName)
{
if (_maxLength.HasValue)
{
facet = Facet.Create(description, _maxLength.GetValueAsObject());
return true;
}
}
else if (description.FacetName == DbProviderManifest.UnicodeFacetName)
{
if (_unicode.HasValue)
{
facet = Facet.Create(description, _unicode.GetValueAsObject());
return true;
}
}
else if (description.FacetName == DbProviderManifest.FixedLengthFacetName)
{
if (_fixedLength.HasValue)
{
facet = Facet.Create(description, _fixedLength.GetValueAsObject());
return true;
}
}
else if (description.FacetName == DbProviderManifest.PrecisionFacetName)
{
if (_precision.HasValue)
{
facet = Facet.Create(description, _precision.GetValueAsObject());
return true;
}
}
else if (description.FacetName == DbProviderManifest.ScaleFacetName)
{
if (_scale.HasValue)
{
facet = Facet.Create(description, _scale.GetValueAsObject());
return true;
}
}
facet = null;
return false;
}
internal static FacetValues NullFacetValues
{
get
{
// null out everything except Nullable, and DefaultValue
FacetValues values = new FacetValues();
values.FixedLength = (bool?)null;
values.MaxLength = (int?)null;
values.Precision = (byte?)null;
values.Scale = (byte?)null;
values.Unicode = (bool?)null;
return values;
}
}
}
}
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