Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Linq/Exceptions.cs

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+using System;
+using System.Collections.Generic;
+using System.Data.Linq.Provider;
+using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+
+namespace System.Data.Linq {
+    /// <summary>
+    /// DLinq-specific custom exception factory.
+    /// </summary>
+    [SuppressMessage("Microsoft.Usage", "CA2237:MarkISerializableTypesWithSerializable", Justification = "Unknown reason.")]
+    [SuppressMessage("Microsoft.Design", "CA1032:ImplementStandardExceptionConstructors", Justification = "Unknown reason.")]
+    public class ChangeConflictException : Exception {
+        public ChangeConflictException() { }
+        public ChangeConflictException(string message) : base(message) { }
+        public ChangeConflictException(string message, Exception innerException) : base(message, innerException) { }
+    }
+    /// <summary>
+    /// An attempt was made to add an object to the identity cache with a key that is already in use
+    /// </summary>
+    [SuppressMessage("Microsoft.Usage", "CA2237:MarkISerializableTypesWithSerializable", Justification = "Unknown reason.")]
+    [SuppressMessage("Microsoft.Design", "CA1032:ImplementStandardExceptionConstructors", Justification = "Unknown reason.")]
+    public class DuplicateKeyException : InvalidOperationException {
+        private object duplicate;
+        public DuplicateKeyException(object duplicate) {
+            this.duplicate = duplicate;
+        }
+        public DuplicateKeyException(object duplicate, string message)
+            : base(message) {
+            this.duplicate = duplicate;
+        }
+        public DuplicateKeyException(object duplicate, string message, Exception innerException)
+            : base(message, innerException) {
+            this.duplicate = duplicate;
+        }
+
+        /// <summary>
+        /// The object whose duplicate key caused the exception.
+        /// </summary>
+        public object Object {
+            get {
+                return duplicate;
+            }
+        }
+    }
+
+    /// <summary>
+    /// An attempt was made to change an FK but the Entity is Loaded
+    /// </summary>
+    [SuppressMessage("Microsoft.Usage", "CA2237:MarkISerializableTypesWithSerializable", Justification = "Unknown reason.")]
+    [SuppressMessage("Microsoft.Design", "CA1032:ImplementStandardExceptionConstructors", Justification = "Unknown reason.")]
+    public class ForeignKeyReferenceAlreadyHasValueException : InvalidOperationException {
+        public ForeignKeyReferenceAlreadyHasValueException() { }
+        public ForeignKeyReferenceAlreadyHasValueException(string message) : base(message) { }
+        public ForeignKeyReferenceAlreadyHasValueException(string message, Exception innerException) : base(message, innerException) { }
+    }
+}