Source code for changes.models.itemsequence
from sqlalchemy import Column, Integer
from changes.config import db
from changes.db.types.guid import GUID
[docs]class ItemSequence(db.Model):
"""
Used to hold counters for autoincrement-style sequence number generation.
In each row, value is the last sequence number returned for the
corresponding parent.
The table is used via the next_item_value database function and not used in
the python codebase.
"""
__tablename__ = 'itemsequence'
parent_id = Column(GUID, nullable=False, primary_key=True)
value = Column(Integer, default=0, server_default='0', nullable=False,
primary_key=True)