internal OdbcConnectionHandle(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle) : base(ODBC32.SQL_HANDLE.DBC, environmentHandle) {
if(null == connection) {
throw ADP.ArgumentNull("connection");
}
if(null == constr) {
throw ADP.ArgumentNull("constr");
}
ODBC32.RetCode retcode;
//Set connection timeout (only before open).
//Note: We use login timeout since its odbc 1.0 option, instead of using
//connectiontimeout (which affects other things besides just login) and its
//a odbc 3.0 feature. The ConnectionTimeout on the managed providers represents
//the login timeout, nothing more.
int connectionTimeout = connection.ConnectionTimeout;
retcode = SetConnectionAttribute2(ODBC32.SQL_ATTR.LOGIN_TIMEOUT, (IntPtr)connectionTimeout, (Int32)ODBC32.SQL_IS.UINTEGER);
string connectionString = constr.UsersConnectionString(false);
// Connect to the driver. (Using the connection string supplied)
//Note: The driver doesn't filter out the password in the returned connection string
//so their is no need for us to obtain the returned connection string
// Prepare to handle a ThreadAbort Exception between SQLDriverConnectW and update of the state variables
retcode = Connect(connectionString);
connection.HandleError(this, retcode);
}
private OdbcEnvironment () {} // default const.
static internal OdbcEnvironmentHandle GetGlobalEnvironmentHandle() {
OdbcEnvironmentHandle globalEnvironmentHandle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if(null == globalEnvironmentHandle) {
ADP.CheckVersionMDAC(true);
lock(_globalEnvironmentHandleLock) {
globalEnvironmentHandle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if(null == globalEnvironmentHandle) {
globalEnvironmentHandle = new OdbcEnvironmentHandle();
_globalEnvironmentHandle = globalEnvironmentHandle;
}
}
}
return globalEnvironmentHandle;
}
internal OdbcConnectionHandle(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle) : base(ODBC32.SQL_HANDLE.DBC, environmentHandle)
{
if (connection == null)
{
throw ADP.ArgumentNull("connection");
}
if (constr == null)
{
throw ADP.ArgumentNull("constr");
}
int connectionTimeout = connection.ConnectionTimeout;
ODBC32.RetCode retcode = this.SetConnectionAttribute2(ODBC32.SQL_ATTR.LOGIN_TIMEOUT, (IntPtr) connectionTimeout, -5);
string connectionString = constr.UsersConnectionString(false);
retcode = this.Connect(connectionString);
connection.HandleError(this, retcode);
}
} // default const.
internal static OdbcEnvironmentHandle GetGlobalEnvironmentHandle()
{
OdbcEnvironmentHandle?globalEnvironmentHandle = s_globalEnvironmentHandle as OdbcEnvironmentHandle;
if (null == globalEnvironmentHandle)
{
lock (s_globalEnvironmentHandleLock)
{
globalEnvironmentHandle = s_globalEnvironmentHandle as OdbcEnvironmentHandle;
if (null == globalEnvironmentHandle)
{
globalEnvironmentHandle = new OdbcEnvironmentHandle();
s_globalEnvironmentHandle = globalEnvironmentHandle;
}
}
}
return(globalEnvironmentHandle);
}
internal static OdbcEnvironmentHandle GetGlobalEnvironmentHandle()
{
OdbcEnvironmentHandle handle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (handle == null)
{
ADP.CheckVersionMDAC(true);
lock (_globalEnvironmentHandleLock)
{
handle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (handle == null)
{
handle = new OdbcEnvironmentHandle();
_globalEnvironmentHandle = handle;
}
}
}
return handle;
}
} // default const.
static internal OdbcEnvironmentHandle GetGlobalEnvironmentHandle()
{
OdbcEnvironmentHandle globalEnvironmentHandle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (null == globalEnvironmentHandle)
{
ADP.CheckVersionMDAC(true);
lock (_globalEnvironmentHandleLock) {
globalEnvironmentHandle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (null == globalEnvironmentHandle)
{
globalEnvironmentHandle = new OdbcEnvironmentHandle();
_globalEnvironmentHandle = globalEnvironmentHandle;
}
}
}
return(globalEnvironmentHandle);
}
internal static OdbcEnvironmentHandle GetGlobalEnvironmentHandle()
{
OdbcEnvironmentHandle handle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (handle == null)
{
ADP.CheckVersionMDAC(true);
lock (_globalEnvironmentHandleLock)
{
handle = _globalEnvironmentHandle as OdbcEnvironmentHandle;
if (handle == null)
{
handle = new OdbcEnvironmentHandle();
_globalEnvironmentHandle = handle;
}
}
}
return(handle);
}
// 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);
}
// Construct from a compiled connection string
internal OdbcConnectionOpen(OdbcConnection outerConnection, OdbcConnectionString connectionOptions)
{
OdbcEnvironmentHandle environmentHandle = OdbcEnvironment.GetGlobalEnvironmentHandle();
outerConnection.ConnectionHandle = new OdbcConnectionHandle(outerConnection, connectionOptions, environmentHandle);
}
internal OdbcConnectionHandle(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle) : base(ODBC32.SQL_HANDLE.DBC, environmentHandle)
{
if (null == connection)
{
throw ADP.ArgumentNull("connection");
}
if (null == constr)
{
throw ADP.ArgumentNull("constr");
}
ODBC32.RetCode retcode;
//Set connection timeout (only before open).
//Note: We use login timeout since its odbc 1.0 option, instead of using
//connectiontimeout (which affects other things besides just login) and its
//a odbc 3.0 feature. The ConnectionTimeout on the managed providers represents
//the login timeout, nothing more.
int connectionTimeout = connection.ConnectionTimeout;
retcode = SetConnectionAttribute2(ODBC32.SQL_ATTR.LOGIN_TIMEOUT, (IntPtr)connectionTimeout, (Int32)ODBC32.SQL_IS.UINTEGER);
string connectionString = constr.UsersConnectionString(false);
// Connect to the driver. (Using the connection string supplied)
//Note: The driver doesn't filter out the password in the returned connection string
//so their is no need for us to obtain the returned connection string
// Prepare to handle a ThreadAbort Exception between SQLDriverConnectW and update of the state variables
retcode = Connect(connectionString);
connection.HandleError(this, retcode);
}
static internal extern /*SQLRETURN*/ODBC32.RetCode SQLSetEnvAttr(
/*SQLHENV*/OdbcEnvironmentHandle EnvironmentHandle,
/*SQLINTEGER*/ODBC32.SQL_ATTR Attribute,
/*SQLPOINTER*/IntPtr Value,
/*SQLINTEGER*/ODBC32.SQL_IS StringLength);
internal OdbcConnectionHandle(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle) : base(ODBC32.SQL_HANDLE.DBC, environmentHandle)
{
if (connection == null)
{
throw ADP.ArgumentNull("connection");
}
if (constr == null)
{
throw ADP.ArgumentNull("constr");
}
int connectionTimeout = connection.ConnectionTimeout;
ODBC32.RetCode retcode = this.SetConnectionAttribute2(ODBC32.SQL_ATTR.LOGIN_TIMEOUT, (IntPtr)connectionTimeout, -5);
string connectionString = constr.UsersConnectionString(false);
retcode = this.Connect(connectionString);
connection.HandleError(this, retcode);
}
internal static extern ODBC32.RetCode SQLSetEnvAttr(OdbcEnvironmentHandle EnvironmentHandle, ODBC32.SQL_ATTR Attribute, IntPtr Value, ODBC32.SQL_IS StringLength);