/// <summary>
/// This method returns the entity items from the CSV data file collection.
/// </summary>
/// <typeparam name="T">The transit entity type.</typeparam>
/// <param name="tType">The transit file type.</param>
/// <param name="headersRequired">The required headers.</param>
/// <param name="conv">The conversion function.</param>
/// <returns>Returns an amalgamated collection of entities.</returns>
private IEnumerable <T> TransitEntityEnum <T>(
TransitFileType tType, IEnumerable <KeyValuePair <string, bool> > headers, Func <CSVRowItem, T> conv)
{
if (!HasTransitData(tType))
{
yield break;
}
using (Stream data = mData.GetStream(tType))
{
if (data == null)
{
throw new ArgumentNullException();
}
CSVStreamOptions opts = new CSVStreamOptions(Encoding.UTF8, ',', true, false, null, null);
CSVStreamEnumerator <T> item = new CSVStreamEnumerator <T>(data, conv, opts);
foreach (var entity in item)
{
yield return(entity);
}
}
}
public override bool HasStream(TransitFileType type)
{
switch (type)
{
case TransitFileType.Calendar_Dates:
return(HasCalendarDates);
case TransitFileType.Fare_Attributes:
return(HasFareAttributes);
case TransitFileType.Fare_Rules:
return(HasFareRules);
case TransitFileType.Frequencies:
return(HasFrequencies);
case TransitFileType.Transfers:
return(HasTransfers);
case TransitFileType.Shapes:
return(HasShapes);
default:
return(true);
}
}
/// <summary>
/// This function checks whether there is valid data for the specific transit type.
/// </summary>
/// <param name="tType">The transit type.</param>
/// <returns>Returns true if there is valid data.</returns>
private bool HasTransitData(TransitFileType tType)
{
return(mData.HasStream(tType));
}
public virtual bool HasStream(TransitFileType type)
{
return(mStreams.ContainsKey(type));
}
public Stream GetStream(TransitFileType type)
{
return(mStreams[type]());
}
public virtual bool HasStream(TransitFileType type)
{
return mStreams.ContainsKey(type);
}
public Stream GetStream(TransitFileType type)
{
return mStreams[type]();
}
public override bool HasStream(TransitFileType type)
{
switch(type)
{
case TransitFileType.Calendar_Dates:
return HasCalendarDates;
case TransitFileType.Fare_Attributes:
return HasFareAttributes;
case TransitFileType.Fare_Rules:
return HasFareRules;
case TransitFileType.Frequencies:
return HasFrequencies;
case TransitFileType.Transfers:
return HasTransfers;
case TransitFileType.Shapes:
return HasShapes;
default:
return true;
}
}
