private BulkObject Peek()
{
if (!_passedFirstRow)
{
var firstRowObject = _bulkObjectReader.ReadNextBulkObject();
var formatVersion = firstRowObject as FormatVersion;
if (formatVersion != null)
{
if (formatVersion.Value != "6" && formatVersion.Value != "6.0")
{
throw new InvalidOperationException(ErrorMessages.FormatVersionIsNotSupported +
formatVersion.Value);
}
}
else
{
_nextObject = firstRowObject;
}
_passedFirstRow = true;
}
if (_nextObject != null)
{
return(_nextObject);
}
return(_nextObject = _bulkObjectReader.ReadNextBulkObject());
}
public void WriteObjectRow(BulkObject bulkObject, bool excludeReadonlyData)
{
var values = new RowValues();
bulkObject.WriteToRowValues(values, excludeReadonlyData);
values[StringTable.Type] = _bulkObjectFactory.GetBulkRowType(bulkObject);
_streamWriter.WriteLine(_formatter.FormatCsvRow(values.Columns));
}
/// <summary>
/// Reads the object only if it matches a predicate
/// </summary>
/// <typeparam name="T">Type of the object</typeparam>
/// <param name="predicate">Predicate that needs to be matched</param>
/// <param name="result">The next object from the file if the object matches the predicate, null otherwise</param>
/// <returns>True is object matches the predicate, false otherwise</returns>
public bool TryRead <T>(Predicate <T> predicate, out T result)
where T : BulkObject
{
var peeked = Peek();
var instanceOfT = peeked as T;
if (instanceOfT != null && predicate(instanceOfT))
{
_nextObject = null;
instanceOfT.ReadRelatedDataFromStream(this);
result = instanceOfT;
return(true);
}
result = null;
return(false);
}
public string GetBulkRowType(BulkObject bulkObject)
{
return(TypeReverseMap[bulkObject.GetType()]);
}
public void WriteObjectRow(BulkObject bulkObject)
{
WriteObjectRow(bulkObject, false);
}