Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,92 @@
+//---------------------------------------------------------------------
+// <copyright file="AssociationSet.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+
+namespace System.Data.Metadata.Edm
+{
+    /// <summary>
+    /// Class for representing an Association set
+    /// </summary>
+    public sealed class AssociationSet : RelationshipSet
+    {
+        #region Constructors
+        /// <summary>
+        /// Initializes a new instance of AssocationSet with the given name and the association type
+        /// </summary>
+        /// <param name="name">The name of the Assocation set</param>
+        /// <param name="associationType">The association type of the entities that this associationship set type contains</param>
+        internal AssociationSet(string name, AssociationType associationType)
+            : base(name, null, null, null, associationType)
+        {
+        }
+        #endregion
+
+        #region Fields
+        private readonly ReadOnlyMetadataCollection<AssociationSetEnd> _associationSetEnds =
+            new ReadOnlyMetadataCollection<AssociationSetEnd>(new MetadataCollection<AssociationSetEnd>());
+        #endregion
+
+        #region Properties
+        /// <summary>
+        /// Returns the association type associated with this association set
+        /// </summary>
+        public new AssociationType ElementType
+        {
+            get
+            {
+                return (AssociationType)base.ElementType;
+            }
+        }
+
+        /// <summary>
+        /// Returns the ends of the association set
+        /// </summary>
+        [MetadataProperty(BuiltInTypeKind.AssociationSetEnd, true)]
+        public ReadOnlyMetadataCollection<AssociationSetEnd> AssociationSetEnds
+        {
+            get
+            {
+                return _associationSetEnds;
+            }
+        }
+
+        /// <summary>
+        /// Returns the kind of the type
+        /// </summary>
+        public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.AssociationSet; } }
+        #endregion
+
+        #region Methods
+        /// <summary>
+        /// Sets this item to be readonly, once this is set, the item will never be writable again.
+        /// </summary>
+        internal override void SetReadOnly()
+        {
+            if (!this.IsReadOnly)
+            {
+                base.SetReadOnly();
+                this.AssociationSetEnds.Source.SetReadOnly();
+            }
+        }
+
+        /// <summary>
+        /// Adds the given end to the collection of ends
+        /// </summary>
+        /// <param name="associationSetEnd"></param>
+        internal void AddAssociationSetEnd(AssociationSetEnd associationSetEnd)
+        {
+            this.AssociationSetEnds.Source.Add(associationSetEnd);
+        }
+        #endregion
+    }
+}