Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data/System/Data/SqlClient/assemblycache.cs

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+//------------------------------------------------------------------------------
+// <copyright file="assemblycache.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+// <owner current="true" primary="false">[....]</owner>
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+//ThisAssembly class keeps a map of the following:
+//AssemblyName to AssemblyID
+//TypeName to TypeID
+//AssemblyID to AssemblyRef and State
+//TypeID to TypeRef and AssemblyId
+//
+//Adding an assembly to this class will NOT enable users to create types from that assembly. Users should explicitely add type details and link types to assemblies.
+// This class also registers for assembly resolve events so that dependent assemblies can be resolved if they are registered.
+//This class does NOT know anything about assembly dependencies. It simply loads assemblies as handed over to it.
+//Users can take advantage of connection pooling by tying this instance to a pooling-aware component.
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections;
+using System.Runtime.InteropServices;
+using System.Reflection;
+using System.Globalization;
+using System.Diagnostics;
+using System.Data.Sql;
+using System.Data.SqlTypes;
+using System.IO;
+using System.Security;
+using System.Security.Policy;
+using System.Security.Permissions;
+using System.Data.Common;
+
+using Microsoft.SqlServer.Server;
+
+namespace System.Data.SqlClient {
+
+    internal sealed class AssemblyCache {
+        private AssemblyCache() { /* prevent utility class from being insantiated*/
+        }
+
+        internal static int GetLength(Object inst){
+            //caller should have allocated enough, based on MaxByteSize
+            return SerializationHelperSql9.SizeInBytes(inst);
+        }
+
+        //The attribute we are looking for is now moved to an external dll that server provides. If the name is changed.
+        //then we we have to make corresponding changes here.
+        //please also change sqludcdatetime.cs, sqltime.cs and sqldate.cs
+
+        internal static SqlUdtInfo GetInfoFromType(Type t) {
+            Debug.Assert(t != null, "Type object cant be NULL");
+
+            Type orig = t;
+            do {
+                SqlUdtInfo attr = SqlUdtInfo.TryGetFromType(t);
+
+                if (attr != null ) {
+                    return attr;
+                }
+                else {
+                    t = t.BaseType;
+                }
+            }
+            while (t != null);
+
+            throw SQL.UDTInvalidSqlType(orig.AssemblyQualifiedName);
+        }
+    }
+}