Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,151 @@
+//---------------------------------------------------------------------
+// <copyright file="EdmMember.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Diagnostics;
+using System.Text;
+
+namespace System.Data.Metadata.Edm
+{
+    /// <summary>
+    /// Represents the edm member class
+    /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
+    public abstract class EdmMember : MetadataItem
+    {
+        /// <summary>
+        /// Initializes a new instance of EdmMember class
+        /// </summary>
+        /// <param name="name">name of the member</param>
+        /// <param name="memberTypeUsage">type information containing info about member's type and its facet</param>
+        internal EdmMember(string name, TypeUsage memberTypeUsage)
+        {
+            EntityUtil.CheckStringArgument(name, "name");
+            EntityUtil.GenericCheckArgumentNull(memberTypeUsage, "memberTypeUsage");
+            _name = name;
+            _typeUsage = memberTypeUsage;
+        }
+
+        private TypeUsage _typeUsage;
+        private string _name;
+        private StructuralType _declaringType;
+
+        /// <summary>
+        /// Returns the identity of the member
+        /// </summary>
+        internal override string Identity
+        {
+            get
+            {
+                return this.Name;
+            }
+        }
+
+        /// <summary>
+        /// Returns the name of the member
+        /// </summary>
+        [MetadataProperty(PrimitiveTypeKind.String, false)]
+        public String Name
+        {
+            get
+            {
+                return _name;
+            }
+        }
+
+        /// <summary>
+        /// Returns the declaring type of the member
+        /// </summary>
+        public StructuralType DeclaringType
+        {
+            get
+            {
+                return _declaringType;
+            }
+        }
+
+        /// <summary>
+        /// Returns the TypeUsage object containing the type information and facets
+        /// about the type
+        /// </summary>
+        [MetadataProperty(BuiltInTypeKind.TypeUsage, false)]
+        public TypeUsage TypeUsage
+        {
+            get
+            {
+                return _typeUsage;
+            }
+        }
+
+        /// <summary>
+        /// Overriding System.Object.ToString to provide better String representation 
+        /// for this type.
+        /// </summary>
+        public override string ToString()
+        {
+            return Name;
+        }
+
+
+        /// <summary>
+        /// Sets the member to read only mode. Once this is done, there are no changes
+        /// that can be done to this class
+        /// </summary>
+        internal override void SetReadOnly()
+        {
+            if (!IsReadOnly)
+            {
+                base.SetReadOnly();
+
+                // TypeUsage is always readonly, no need to set it
+            }
+        }
+
+        /// <summary>
+        /// Change the declaring type without doing fixup in the member collection
+        /// </summary>
+        internal void ChangeDeclaringTypeWithoutCollectionFixup(StructuralType newDeclaringType)
+        {
+            _declaringType = newDeclaringType;
+        }
+
+        /// <summary>
+        /// Tells whether this member is marked as a Computed member in the EDM definition
+        /// </summary>
+        internal bool IsStoreGeneratedComputed
+        {
+            get
+            {
+                Facet item=null;
+                if (TypeUsage.Facets.TryGetValue(EdmProviderManifest.StoreGeneratedPatternFacetName, false, out item))
+                { 
+                    return ((StoreGeneratedPattern)item.Value) == StoreGeneratedPattern.Computed;
+                }
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Tells whether this member's Store generated pattern is marked as Identity in the EDM definition
+        /// </summary>
+        internal bool IsStoreGeneratedIdentity
+        {
+            get
+            {
+                Facet item = null;
+                if (TypeUsage.Facets.TryGetValue(EdmProviderManifest.StoreGeneratedPatternFacetName, false, out item))
+                { 
+                    return ((StoreGeneratedPattern)item.Value) == StoreGeneratedPattern.Identity;
+                }
+                return false;
+            }
+        }
+    }
+}