public object Clone()
{
_SqlMetaDataSetCollection result = new _SqlMetaDataSetCollection();
result.metaDataSet = metaDataSet == null ? null : (_SqlMetaDataSet)metaDataSet.Clone();
foreach (_SqlMetaDataSet set in _altMetaDataSetArray)
{
result._altMetaDataSetArray.Add((_SqlMetaDataSet)set.Clone());
}
return result;
}
internal void SetAltMetaDataSet(_SqlMetaDataSet metaDataSet, bool metaDataConsumed)
{
if (this._altMetaDataSetCollection == null)
{
this._altMetaDataSetCollection = new _SqlMetaDataSetCollection();
}
this._altMetaDataSetCollection.SetAltMetaData(metaDataSet);
this._metaDataConsumed = metaDataConsumed;
if (this._metaDataConsumed && (this._parser != null))
{
byte num = this._stateObj.PeekByte();
if (0xa9 == num)
{
this._parser.Run(RunBehavior.ReturnImmediately, this._command, this, null, this._stateObj);
num = this._stateObj.PeekByte();
}
this._hasRows = 0xd1 == num;
}
if ((metaDataSet != null) && ((this._data == null) || (this._data.Length < metaDataSet.Length)))
{
this._data = SqlBuffer.CreateBufferArray(metaDataSet.Length);
}
}
internal void Snap()
{
_snapshotInBuffs.Clear();
_snapshotInBuffCurrent = 0;
_snapshotInBytesUsed = _stateObj._inBytesUsed;
_snapshotInBytesPacket = _stateObj._inBytesPacket;
_snapshotPendingData = _stateObj._pendingData;
_snapshotErrorTokenReceived = _stateObj._errorTokenReceived;
_snapshotMessageStatus = _stateObj._messageStatus;
// _nullBitmapInfo must be cloned before it is updated
_snapshotNullBitmapInfo = _stateObj._nullBitmapInfo;
_snapshotLongLen = _stateObj._longlen;
_snapshotLongLenLeft = _stateObj._longlenleft;
_snapshotCleanupMetaData = _stateObj._cleanupMetaData;
// _cleanupAltMetaDataSetArray must be cloned bofore it is updated
_snapshotCleanupAltMetaDataSetArray = _stateObj._cleanupAltMetaDataSetArray;
_snapshotHasOpenResult = _stateObj._hasOpenResult;
_snapshotReceivedColumnMetadata = _stateObj._receivedColMetaData;
_snapshotAttentionReceived = _stateObj._attentionReceived;
#if DEBUG
_rollingPend = 0;
_rollingPendCount = 0;
_stateObj._lastStack = null;
Debug.Assert(_stateObj._bTmpRead == 0, "Has partially read data when snapshot taken");
Debug.Assert(_stateObj._partialHeaderBytesRead == 0, "Has partially read header when shapshot taken");
#endif
PushBuffer(_stateObj._inBuff, _stateObj._inBytesRead);
}
private bool HasMoreResults()
{
if (this._parser != null)
{
if (!this.HasMoreRows())
{
while (this._stateObj._pendingData)
{
switch (this._stateObj.PeekByte())
{
case 0xd1:
return true;
case 0xd3:
if (this._altRowStatus == ALTROWSTATUS.Null)
{
this._altMetaDataSetCollection.metaDataSet = this._metaData;
this._metaData = null;
}
this._altRowStatus = ALTROWSTATUS.AltRow;
this._hasRows = true;
return true;
case 0xfd:
this._altRowStatus = ALTROWSTATUS.Null;
this._metaData = null;
this._altMetaDataSetCollection = null;
return true;
case 0x81:
return true;
}
this._parser.Run(RunBehavior.ReturnImmediately, this._command, this, null, this._stateObj);
}
}
else
{
return true;
}
}
return false;
}