public FileSourceCSV(
FileSourceFactory factory,
DataFlowOpInitializeContext context,
AdapterInputSource adapterInputSource,
bool hasHeaderLine,
bool hasTitleLine,
int?numLoops,
string[] propertyNames,
string dateFormat)
{
_factory = factory;
_adapterInputSource = adapterInputSource;
_hasHeaderLine = hasHeaderLine;
_hasTitleLine = hasTitleLine;
_numLoops = numLoops;
_dateFormat = dateFormat;
_statementContext = context.AgentInstanceContext.StatementContext;
// use event type's full list of properties
if (!hasTitleLine)
{
if (propertyNames != null)
{
_parseMake = SetupProperties(false, propertyNames, factory.OutputEventType, _statementContext, dateFormat);
}
else
{
_parseMake = SetupProperties(false, factory.OutputEventType.PropertyNames, factory.OutputEventType, _statementContext, dateFormat);
}
}
}
public void Next()
{
try {
string[] nextRecord = _reader.GetNextRecord();
if (_firstRow)
{
// determine the parsers from the title line
if (_hasTitleLine && _parseMake == null)
{
_parseMake = SetupProperties(true, nextRecord, _factory.OutputEventType, _statementContext, _dateFormat);
}
if (_hasTitleLine || _hasHeaderLine)
{
nextRecord = _reader.GetNextRecord();
}
}
var propertyIndexes = _parseMake.Indexes;
var tuple = new object[propertyIndexes.Length];
for (var i = 0; i < propertyIndexes.Length; i++)
{
tuple[i] = _parseMake.Parsers[i].Parse(nextRecord[propertyIndexes[i]]);
}
var underlying = _parseMake.EventBeanManufacturer.MakeUnderlying(tuple);
if (underlying is object[])
{
graphContext.Submit((object[])underlying);
}
else
{
graphContext.Submit(underlying);
}
_firstRow = false;
}
catch (EndOfStreamException) {
if (_numLoops != null)
{
_loopCount++;
if (_loopCount >= _numLoops)
{
graphContext.SubmitSignal(new EPDataFlowSignalFinalMarkerImpl());
}
else
{
// reset
graphContext.SubmitSignal(new EPDataFlowSignalWindowMarkerImpl());
_firstRow = true;
if (_reader.IsResettable)
{
_reader.Reset();
}
else
{
_reader = new CSVReader(_adapterInputSource);
}
}
}
else
{
graphContext.SubmitSignal(new EPDataFlowSignalFinalMarkerImpl());
}
}
}
