How jagadish210523-lgtm/railqueue-cascade-engine works
This is a small, single-file railway reservation CLI. The user enters passenger and seat actions; the application creates passenger records, allocates preferred or alternate seats (or queues them), supports cancellation with FIFO promotion, and displays the reservation chart. Train state is restored from and saved to JSON. The README describes a separate main.py, but the provided tree contains only train_ticket.py; the graph follows the sampled source.
Main entry points: train_ticket.py Menu and input
Components 9
CLI
- Menu and input
train_ticket.py
Reservations
- Passenger entity
train_ticket.py - Train controller
train_ticket.py - Seat booking
train_ticket.py - Cancellation cascade
train_ticket.py - Reservation chart
train_ticket.py
State and storage
- JSON persistence
train_ticket.py - Train data file
Other components
- User
Connections 14
- User → Menu and input: enters choices
- Menu and input → Passenger entity: creates passenger
- Menu and input → Train controller: initializes
- Menu and input → Seat booking: requests booking
- Menu and input → Cancellation cascade: requests cancellation
- Menu and input → Reservation chart: requests chart
- Train controller → JSON persistence: loads state
- Train controller → Train controller: generates seats
- Seat booking → JSON persistence: saves state
- Cancellation cascade → JSON persistence: saves state
- JSON persistence → Train data file: reads and writes
- JSON persistence → Passenger entity: reconstructs records
- Passenger entity → JSON persistence: serializes fields
- Cancellation cascade → Train controller: promotes queued passenger