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//------------------------------------------------------------------------------
// <copyright file="assemblycache.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
// <owner current="true" primary="false">Microsoft</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);
}
}
}
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