Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Metadata/Edm/FacetValues.cs

@@ -0,0 +1,126 @@
+//---------------------------------------------------------------------
+// <copyright file="FacetValues.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+
+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;
+            }
+        }
+    }
+
+}