private int FillFromADODB(Object data, object adodb, string srcTable, bool multipleResults)
{
Debug.Assert(null != data, "FillFromADODB: null data object");
Debug.Assert(null != adodb, "FillFromADODB: null ADODB");
Debug.Assert(!(adodb is DataTable), "call Fill( (DataTable) value)");
Debug.Assert(!(adodb is DataSet), "call Fill( (DataSet) value)");
/*
* IntPtr adodbptr = ADP.PtrZero;
* try { // generate a new COM Callable Wrapper around the user object so they can't ReleaseComObject on us.
* adodbptr = Marshal.GetIUnknownForObject(adodb);
* adodb = System.Runtime.Remoting.Services.EnterpriseServicesHelper.WrapIUnknownWithComObject(adodbptr);
* }
* finally {
* if (ADP.PtrZero != adodbptr) {
* Marshal.Release(adodbptr);
* }
* }
*/
bool closeRecordset = multipleResults; // MDAC 60332, 66668
Type recordsetType = null;
UnsafeNativeMethods.ADORecordConstruction record = null;
UnsafeNativeMethods.ADORecordsetConstruction recordset = null;
try {
#if DEBUG
ODB.Trace_Cast("Object", "ADORecordsetConstruction", "get_Rowset");
#endif
recordset = (UnsafeNativeMethods.ADORecordsetConstruction)adodb;
recordsetType = adodb.GetType();
if (multipleResults)
{
// The NextRecordset method is not available on a disconnected Recordset object, where ActiveConnection has been set to NULL
object activeConnection = recordsetType.InvokeMember("ActiveConnection", BindingFlags.GetProperty, null, adodb, new object[0]);
if (null == activeConnection)
{
multipleResults = false;
}
}
}
catch (InvalidCastException e) {
ADP.TraceException(e);
try {
#if DEBUG
ODB.Trace_Cast("Object", "ADORecordConstruction", "get_Row");
#endif
record = (UnsafeNativeMethods.ADORecordConstruction)adodb;
multipleResults = false; // IRow implies CommandBehavior.SingleRow which implies CommandBehavior.SingleResult
}
catch (InvalidCastException f) {
// $Consider: telling use either type of object passed in
throw ODB.Fill_NotADODB("adodb", f);
}
}
int results = 0;
if (null != recordset)
{
int resultCount = 0;
bool incrementResultCount; // MDAC 59632
object[] value = new object[1];
do
{
string tmp = null;
if (data is DataSet)
{
tmp = DbDataAdapter.GetSourceTableName(srcTable, resultCount);
}
results += FillFromRecordset(data, recordset, tmp, out incrementResultCount);
if (multipleResults)
{
value[0] = DBNull.Value;
try {
adodb = recordsetType.InvokeMember("NextRecordset", BindingFlags.InvokeMethod, null, adodb, value);
if (null != adodb)
{
try {
#if DEBUG
ODB.Trace_Cast("ADODB", "ADORecordsetConstruction", "get_Rowset");
#endif
recordset = (UnsafeNativeMethods.ADORecordsetConstruction)adodb;
}
catch (Exception e) {
ADP.TraceException(e);
break;
}
recordsetType = adodb.GetType(); // MDAC 59253
if (incrementResultCount)
{
resultCount++;
}
continue;
}
}
catch (TargetInvocationException e) { // MDAC 59244, 65506
if (e.InnerException is COMException)
{
FillNextResultError((COMException)e.InnerException, e);
closeRecordset = true; // MDAC 60408
}
else
{
throw;
}
}
catch (COMException e) { // used as backup to the TargetInvocationException
FillNextResultError(e, e);
closeRecordset = true; // MDAC 60408
}
}
break;
} while(null != recordset);
if ((null != recordset) && (closeRecordset || (null == adodb))) // MDAC 59746, 60902
{
FillClose(recordsetType, recordset);
}
}
else if (null != record)
{
results = FillFromRecord(data, record, srcTable);
if (closeRecordset) // MDAC 66668
{
FillClose(adodb.GetType(), record); // MDAC 60848
}
}
else
{
throw ODB.Fill_NotADODB("adodb", null);
}
return(results);
}