OdbcConnectionOpen.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / Odbc / OdbcConnectionOpen.cs / 1 / OdbcConnectionOpen.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
//----------------------------------------------------------------------------- 
 
using System;
using System.Data; 
using System.Data.Common;
using System.Data.ProviderBase;
using System.Threading;
using SysTx = System.Transactions; 

namespace System.Data.Odbc { 
    sealed internal class OdbcConnectionOpen : DbConnectionInternal { 

        // Construct from a compiled connection string 
        internal OdbcConnectionOpen(OdbcConnection outerConnection, OdbcConnectionString connectionOptions) {
#if DEBUG
            try { // use this to help validate this object is only created after the following permission has been previously demanded in the current codepath
                if (null != outerConnection) { 
                    outerConnection.UserConnectionOptions.DemandPermission();
                } 
                else { 
                    connectionOptions.DemandPermission();
                } 
            }
            catch(System.Security.SecurityException) {
                System.Diagnostics.Debug.Assert(false, "unexpected SecurityException for current codepath");
                throw; 
            }
#endif 
            OdbcEnvironmentHandle environmentHandle = OdbcEnvironment.GetGlobalEnvironmentHandle(); 
            outerConnection.ConnectionHandle = new OdbcConnectionHandle(outerConnection, connectionOptions, environmentHandle);
        } 

        internal OdbcConnection OuterConnection {
            get {
                OdbcConnection outerConnection = (OdbcConnection)Owner; 

                if (null == outerConnection) 
                    throw ADP.InvalidOperation("internal connection without an outer connection?");    // 

                return outerConnection; 
            }
        }

        override public string ServerVersion { 
            get {
                return OuterConnection.Open_GetServerVersion(); 
            } 
        }
 
        override protected void Activate(SysTx.Transaction transaction) {
            OdbcConnection.ExecutePermission.Demand();
        }
 
        override public DbTransaction BeginTransaction(IsolationLevel isolevel) {
            return BeginOdbcTransaction(isolevel); 
        } 

        internal OdbcTransaction BeginOdbcTransaction(IsolationLevel isolevel) { 
            return OuterConnection.Open_BeginTransaction(isolevel);
        }

        override public void ChangeDatabase(string value) { 
            OuterConnection.Open_ChangeDatabase(value);
        } 
 
        override protected DbReferenceCollection CreateReferenceCollection() {
            return new OdbcReferenceCollection(); 
        }

        override protected void Deactivate() {
            NotifyWeakReference(OdbcReferenceCollection.Closing); 
        }
 
        override public void EnlistTransaction(SysTx.Transaction transaction) { 
            OuterConnection.Open_EnlistTransaction(transaction);
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
//----------------------------------------------------------------------------- 
 
using System;
using System.Data; 
using System.Data.Common;
using System.Data.ProviderBase;
using System.Threading;
using SysTx = System.Transactions; 

namespace System.Data.Odbc { 
    sealed internal class OdbcConnectionOpen : DbConnectionInternal { 

        // Construct from a compiled connection string 
        internal OdbcConnectionOpen(OdbcConnection outerConnection, OdbcConnectionString connectionOptions) {
#if DEBUG
            try { // use this to help validate this object is only created after the following permission has been previously demanded in the current codepath
                if (null != outerConnection) { 
                    outerConnection.UserConnectionOptions.DemandPermission();
                } 
                else { 
                    connectionOptions.DemandPermission();
                } 
            }
            catch(System.Security.SecurityException) {
                System.Diagnostics.Debug.Assert(false, "unexpected SecurityException for current codepath");
                throw; 
            }
#endif 
            OdbcEnvironmentHandle environmentHandle = OdbcEnvironment.GetGlobalEnvironmentHandle(); 
            outerConnection.ConnectionHandle = new OdbcConnectionHandle(outerConnection, connectionOptions, environmentHandle);
        } 

        internal OdbcConnection OuterConnection {
            get {
                OdbcConnection outerConnection = (OdbcConnection)Owner; 

                if (null == outerConnection) 
                    throw ADP.InvalidOperation("internal connection without an outer connection?");    // 

                return outerConnection; 
            }
        }

        override public string ServerVersion { 
            get {
                return OuterConnection.Open_GetServerVersion(); 
            } 
        }
 
        override protected void Activate(SysTx.Transaction transaction) {
            OdbcConnection.ExecutePermission.Demand();
        }
 
        override public DbTransaction BeginTransaction(IsolationLevel isolevel) {
            return BeginOdbcTransaction(isolevel); 
        } 

        internal OdbcTransaction BeginOdbcTransaction(IsolationLevel isolevel) { 
            return OuterConnection.Open_BeginTransaction(isolevel);
        }

        override public void ChangeDatabase(string value) { 
            OuterConnection.Open_ChangeDatabase(value);
        } 
 
        override protected DbReferenceCollection CreateReferenceCollection() {
            return new OdbcReferenceCollection(); 
        }

        override protected void Deactivate() {
            NotifyWeakReference(OdbcReferenceCollection.Closing); 
        }
 
        override public void EnlistTransaction(SysTx.Transaction transaction) { 
            OuterConnection.Open_EnlistTransaction(transaction);
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK