using System;
using System.IO;

namespace BCG
{
	public class FileViewStream : ViewStream
	{
      DataPacket? myDp;
		public FileViewStream (string dataFileName, 
         string schemaFileName)
         : this (dataFileName, schemaFileName, Int32.MaxValue)
		{}

      public FileViewStream (string dataFileName, 
         string schemaFileName,
         int bufferSize)
      {
         IBlueRowCollection newRows = 
            new FileRowCollection (dataFileName, schemaFileName, bufferSize);
         myFireEvent (new DataPacket (newRows, new BlueTable(newRows), new BlueTable (newRows.schema)));
      }

      public FileViewStream (StreamReader dataReader,
         StreamReader schemaReader)
         : this (dataReader, schemaReader, Int32.MaxValue)
      {}

      public FileViewStream (StreamReader dataReader,
         StreamReader schemaReader,
         int bufferSize)
      {
         IBlueRowCollection newRows = 
            new FileRowCollection (dataReader, schemaReader, bufferSize);
         myDp = new DataPacket (newRows, new BlueTable(newRows), new BlueTable (newRows.schema));
      }

      protected override void myOnFirstSubscriber()
      {
         if (myDp != null)
            myFireEvent (myDp);
      }


	}
}