// @devnote: should be multithread safe access to OleDbConnection.idataInitialize,
// though last one wins for setting variable. It may be different objects, but
// OLE DB will ensure I'll work with just the single pool
static private OleDbServicesWrapper GetObjectPool()
{
OleDbServicesWrapper wrapper = OleDbConnectionInternal.idataInitialize;
if (null == wrapper)
{
lock (dataInitializeLock)
{
wrapper = OleDbConnectionInternal.idataInitialize;
if (null == wrapper)
{
VersionCheck();
object datalinks;
try
{
datalinks = CreateInstanceDataLinks();
}
catch (Exception e)
{
// UNDONE - should not be catching all exceptions!!!
if (!ADP.IsCatchableExceptionType(e))
{
throw;
}
throw ODB.MDACNotAvailable(e);
}
if (null == datalinks)
{
throw ODB.MDACNotAvailable(null);
}
wrapper = new OleDbServicesWrapper(datalinks);
OleDbConnectionInternal.idataInitialize = wrapper;
}
}
}
Debug.Assert(null != wrapper, "GetObjectPool: null dataInitialize");
return(wrapper);
}
private static OleDbServicesWrapper GetObjectPool()
{
OleDbServicesWrapper idataInitialize = OleDbConnectionInternal.idataInitialize;
if (idataInitialize == null)
{
lock (dataInitializeLock)
{
object obj2;
idataInitialize = OleDbConnectionInternal.idataInitialize;
if (idataInitialize != null)
{
return(idataInitialize);
}
VersionCheck();
try
{
obj2 = CreateInstanceDataLinks();
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
throw ODB.MDACNotAvailable(exception);
}
if (obj2 == null)
{
throw ODB.MDACNotAvailable(null);
}
idataInitialize = new OleDbServicesWrapper(obj2);
OleDbConnectionInternal.idataInitialize = idataInitialize;
}
}
return(idataInitialize);
}
