def __init__(self, reader, ms_level):
self.reader = reader
self.cursor = reader.cursor
self.ms_level = ms_level
self.first_run_slice_bb = None
self.curr_scan_slices = None
self.r_header_by_id = self.get_run_slice_header_by_id()
self.cursor.execute(RunSliceIterator.sql_query, (self.ms_level, ))
self.first_run_slice_bb = BoundingBox._make(self.cursor.fetchone())
def _init_iter(self):
if self.first_run_slice_bb is None:
raise StopIteration
self.curr_scan_slices = bb_to_scan_slices(
bytes(self.first_run_slice_bb.data), self.first_run_slice_bb.run_slice_id, self.reader.struct_by_scan_id)
while 1:
row = self.cursor.fetchone()
if row is None:
self.first_run_slice_bb = None
break
bb = BoundingBox._make(row)
if bb.run_slice_id == self.first_run_slice_bb.run_slice_id:
self.curr_scan_slices += bb_to_scan_slices(
bytes(bb.data), bb.run_slice_id, self.reader.struct_by_scan_id)
else:
self.first_run_slice_bb = bb
break
