from db import db


def has_session_changes():
    return db.session.dirty or db.session.new or db.session.deleted


def session_add(obj):
    db.session.add(obj)

def session_add_all(objects):
    db.session.add_all(objects)

def session_delete(obj):
    db.session.delete(obj)


def session_refresh(obj):
    db.session.refresh(obj)


def session_flush():
    db.session.flush()


def session_commit():
    db.session.commit()
    # db.session.close()