private Bindings(int count) {
_count = count;
_dbbindings = new tagDBBINDING[count];
for(int i = 0;i < _dbbindings.Length;++i) {
_dbbindings[i] = new tagDBBINDING();
}
_dbcolumns = new tagDBCOLUMNACCESS[count];
}
private Bindings(int count)
{
_count = count;
_dbbindings = new tagDBBINDING[count];
for (int i = 0; i < _dbbindings.Length; ++i)
{
_dbbindings[i] = new tagDBBINDING();
}
_dbcolumns = new tagDBCOLUMNACCESS[count];
}
internal ColumnBinding(OleDbDataReader dataReader, int index, int indexForAccessor, int indexWithinAccessor, OleDbParameter parameter, System.Data.OleDb.RowBinding rowbinding, System.Data.OleDb.Bindings bindings, tagDBBINDING binding, int offset, bool ifIRowsetElseIRow)
{
this._dataReader = dataReader;
this._rowbinding = rowbinding;
this._bindings = bindings;
this._index = index;
this._indexForAccessor = indexForAccessor;
this._indexWithinAccessor = indexWithinAccessor;
if (parameter != null)
{
this._parameter = parameter;
this._parameterChangeID = parameter.ChangeID;
}
this._offsetStatus = binding.obStatus.ToInt32() + offset;
this._offsetLength = binding.obLength.ToInt32() + offset;
this._offsetValue = binding.obValue.ToInt32() + offset;
this._ordinal = binding.iOrdinal.ToInt32();
this._maxLen = binding.cbMaxLen.ToInt32();
this._wType = binding.wType;
this._precision = binding.bPrecision;
this._ifIRowsetElseIRow = ifIRowsetElseIRow;
this.SetSize(this.Bindings.ParamSize.ToInt32());
}
internal ColumnBinding(OleDbDataReader dataReader, int index, int indexForAccessor, int indexWithinAccessor,
OleDbParameter parameter, RowBinding rowbinding, Bindings bindings, tagDBBINDING binding, int offset,
bool ifIRowsetElseIRow) {
Debug.Assert(null != rowbinding, "null rowbinding");
Debug.Assert(null != bindings, "null bindings");
Debug.Assert(ODB.SizeOf_tagDBBINDING <= offset, "invalid offset" + offset);
_dataReader = dataReader;
_rowbinding = rowbinding;
_bindings = bindings;
_index = index;
_indexForAccessor = indexForAccessor;
_indexWithinAccessor = indexWithinAccessor;
if (null != parameter) {
_parameter = parameter;
_parameterChangeID = parameter.ChangeID;
}
_offsetStatus = binding.obStatus.ToInt32() + offset;
_offsetLength = binding.obLength.ToInt32() + offset;
_offsetValue = binding.obValue.ToInt32() + offset;
Debug.Assert(0 <= _offsetStatus, "negative _offsetStatus");
Debug.Assert(0 <= _offsetLength, "negative _offsetLength");
Debug.Assert(0 <= _offsetValue, "negative _offsetValue");
_ordinal = binding.iOrdinal.ToInt32();
_maxLen = binding.cbMaxLen.ToInt32();
_wType = binding.wType;
_precision = binding.bPrecision;
_ifIRowsetElseIRow = ifIRowsetElseIRow;
SetSize(Bindings.ParamSize.ToInt32());
}
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;
}
internal ColumnBinding(OleDbDataReader dataReader, int index, int indexForAccessor, int indexWithinAccessor, OleDbParameter parameter, System.Data.OleDb.RowBinding rowbinding, System.Data.OleDb.Bindings bindings, tagDBBINDING binding, int offset, bool ifIRowsetElseIRow)
{
this._dataReader = dataReader;
this._rowbinding = rowbinding;
this._bindings = bindings;
this._index = index;
this._indexForAccessor = indexForAccessor;
this._indexWithinAccessor = indexWithinAccessor;
if (parameter != null)
{
this._parameter = parameter;
this._parameterChangeID = parameter.ChangeID;
}
this._offsetStatus = binding.obStatus.ToInt32() + offset;
this._offsetLength = binding.obLength.ToInt32() + offset;
this._offsetValue = binding.obValue.ToInt32() + offset;
this._ordinal = binding.iOrdinal.ToInt32();
this._maxLen = binding.cbMaxLen.ToInt32();
this._wType = binding.wType;
this._precision = binding.bPrecision;
this._ifIRowsetElseIRow = ifIRowsetElseIRow;
this.SetSize(this.Bindings.ParamSize.ToInt32());
}
