internal OleDbHResult CreateAccessor(UnsafeNativeMethods.IAccessor iaccessor, int flags, ColumnBinding[] bindings)
{
OleDbHResult result = OleDbHResult.S_OK;
int[] rgStatus = new int[this.BindingCount()];
this._iaccessor = iaccessor;
Bid.Trace("<oledb.IAccessor.CreateAccessor|API|OLEDB>\n");
result = iaccessor.CreateAccessor(flags, (IntPtr) rgStatus.Length, this, (IntPtr) this._dataLength, out this._accessorHandle, rgStatus);
Bid.Trace("<oledb.IAccessor.CreateAccessor|API|OLEDB|RET> %08X{HRESULT}\n", result);
for (int i = 0; i < rgStatus.Length; i++)
{
if (rgStatus[i] != 0)
{
if (4 == flags)
{
throw ODB.BadStatus_ParamAcc(bindings[i].ColumnBindingOrdinal, (DBBindStatus) rgStatus[i]);
}
if (2 == flags)
{
throw ODB.BadStatusRowAccessor(bindings[i].ColumnBindingOrdinal, (DBBindStatus) rgStatus[i]);
}
}
}
return result;
}
EnhancedColumnBinding(ColumnBinding Column)
{
col = Column;
}
internal OleDbHResult CreateAccessor(UnsafeNativeMethods.IAccessor iaccessor, int flags, ColumnBinding[] bindings) {
OleDbHResult hr = 0;
int[] rowBindStatus = new int[BindingCount()];
_iaccessor = iaccessor;
Bid.Trace("<oledb.IAccessor.CreateAccessor|API|OLEDB>\n");
hr = iaccessor.CreateAccessor(flags, (IntPtr)rowBindStatus.Length, this, (IntPtr)_dataLength, out _accessorHandle, rowBindStatus); // MDAC 69530
Bid.Trace("<oledb.IAccessor.CreateAccessor|API|OLEDB|RET> %08X{HRESULT}\n", hr);
for (int k = 0; k < rowBindStatus.Length; ++k) {
if (DBBindStatus.OK != (DBBindStatus)rowBindStatus[k]) {
if (ODB.DBACCESSOR_PARAMETERDATA == flags) {
throw ODB.BadStatus_ParamAcc(bindings[k].ColumnBindingOrdinal, (DBBindStatus)rowBindStatus[k]);
}
else if (ODB.DBACCESSOR_ROWDATA == flags) {
throw ODB.BadStatusRowAccessor(bindings[k].ColumnBindingOrdinal, (DBBindStatus)rowBindStatus[k]);
}
else Debug.Assert(false, "unknown accessor buffer");
}
}
return hr;
}
internal ColumnBinding[] SetBindings(OleDbDataReader dataReader, Bindings bindings,
int indexStart, int indexForAccessor,
OleDbParameter[] parameters, tagDBBINDING[] dbbindings, bool ifIRowsetElseIRow) {
Debug.Assert(null != bindings, "null bindings");
Debug.Assert(dbbindings.Length == BindingCount(), "count mismatch");
bool mustRelease = false;
RuntimeHelpers.PrepareConstrainedRegions();
try {
DangerousAddRef(ref mustRelease);
IntPtr buffer = DangerousGetHandle();
for(int i = 0; i < dbbindings.Length; ++i) {
IntPtr ptr = ADP.IntPtrOffset(buffer, (i * ODB.SizeOf_tagDBBINDING));
Marshal.StructureToPtr(dbbindings[i], ptr, false/*deleteold*/);
}
}
finally {
if (mustRelease) {
DangerousRelease();
}
}
ColumnBinding[] columns = new ColumnBinding[dbbindings.Length];
for(int indexWithinAccessor = 0; indexWithinAccessor < columns.Length; ++indexWithinAccessor) {
int index = indexStart + indexWithinAccessor;
OleDbParameter parameter = ((null != parameters) ? parameters[index] : null);
columns[indexWithinAccessor] = new ColumnBinding(
dataReader, index, indexForAccessor, indexWithinAccessor,
parameter, this, bindings, dbbindings[indexWithinAccessor], _headerLength,
ifIRowsetElseIRow);
}
return columns;
}
internal ColumnBinding[] SetBindings(OleDbDataReader dataReader, Bindings bindings, int indexStart, int indexForAccessor, OleDbParameter[] parameters, tagDBBINDING[] dbbindings, bool ifIRowsetElseIRow)
{
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
base.DangerousAddRef(ref success);
IntPtr handle = base.DangerousGetHandle();
for (int j = 0; j < dbbindings.Length; j++)
{
IntPtr ptr = ADP.IntPtrOffset(handle, j * ODB.SizeOf_tagDBBINDING);
Marshal.StructureToPtr(dbbindings[j], ptr, false);
}
}
finally
{
if (success)
{
base.DangerousRelease();
}
}
ColumnBinding[] bindingArray = new ColumnBinding[dbbindings.Length];
for (int i = 0; i < bindingArray.Length; i++)
{
int index = indexStart + i;
OleDbParameter parameter = (parameters != null) ? parameters[index] : null;
bindingArray[i] = new ColumnBinding(dataReader, index, indexForAccessor, i, parameter, this, bindings, dbbindings[i], this._headerLength, ifIRowsetElseIRow);
}
return bindingArray;
}
