{
String dataFilename = fileCount == 1 ? filename : filename + String.valueOf(i);
if (_dataSource.equals("fileinmem"))
{
System.err.println("BitPostingIndex loading " + dataFilename + " to memory");
this.file[i] = new BitFileInMemoryLarge(dataFilename);
}
else if (_dataSource.equals("file"))
{
this.file[i] = new BitFileBuffered(dataFilename);
}