Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,85 @@
+//---------------------------------------------------------------------
+// <copyright file="RelationshipEndMember.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Data.Common;
+
+namespace System.Data.Metadata.Edm
+{
+    /// <summary>
+    /// Initializes a new instance of the RelationshipEndMember class
+    /// </summary>
+    public abstract class RelationshipEndMember : EdmMember
+    {
+        #region Constructors
+        /// <summary>
+        /// Initializes a new instance of RelationshipEndMember
+        /// </summary>
+        /// <param name="name">name of the relationship end member</param>
+        /// <param name="endRefType">Ref type that this end refers to </param>
+        /// <param name="multiplicity">The multiplicity of this relationship end</param>
+        /// <exception cref="System.ArgumentNullException">Thrown if name or endRefType arguments is null</exception>
+        /// <exception cref="System.ArgumentException">Thrown if name argument is empty string</exception>
+        internal RelationshipEndMember(string name, 
+                                       RefType endRefType,
+                                       RelationshipMultiplicity multiplicity)
+        : base(name, 
+               TypeUsage.Create(endRefType, new FacetValues{ Nullable = false }))
+        {
+            _relationshipMultiplicity = multiplicity;
+            _deleteBehavior = OperationAction.None;
+        }
+        #endregion
+
+        #region Fields
+        private OperationAction _deleteBehavior;
+        private RelationshipMultiplicity _relationshipMultiplicity;
+        #endregion
+
+        #region Properties
+        /// <summary>
+        /// Returns the operational behaviour for this end
+        /// </summary>
+        [MetadataProperty(BuiltInTypeKind.OperationAction, true)]
+        public OperationAction DeleteBehavior
+        {
+            get
+            {
+                return _deleteBehavior;
+            }
+            internal set
+            {
+                Util.ThrowIfReadOnly(this);                
+                _deleteBehavior = value;
+            }
+
+        }
+
+        /// <summary>
+        /// Returns the multiplicity for this relationship end
+        /// </summary>
+        [MetadataProperty(BuiltInTypeKind.RelationshipMultiplicity, false)]
+        public RelationshipMultiplicity RelationshipMultiplicity
+        {
+            get
+            {
+                return _relationshipMultiplicity;
+            }
+        }
+        #endregion
+
+        public EntityType GetEntityType()
+        {
+            if (TypeUsage == null)
+                return null;
+            return (EntityType)((RefType)TypeUsage.EdmType).ElementType;
+        }
+    }
+}