schema_sentinel.metadata_manager.model.constraint 

 1import json
 2
 3import sqlalchemy as db
 4from sqlalchemy import ForeignKey, select
 5
 6from . import CommonBase
 7
 8
 9class Constraint(CommonBase):
10    __tablename__ = "constraints"
11    constraint_id = db.Column(db.String, primary_key=True)
12    table_id = db.Column(db.String, ForeignKey("tables.table_id"))
13    constraint_name = db.Column(db.String)
14    constraint_type = db.Column(db.String)
15    constraint_details = db.Column(db.String)
16    reference_key = db.Column(db.String, ForeignKey("constraints.constraint_id"))
17    comment = db.Column(db.String)
18    update_rule = db.Column(db.String, default="NO ACTION")
19    delete_rule = db.Column(db.String, default="NO ACTION")
20    created = db.Column(db.String)
21
22    def save(self, session) -> None:
23        if not session.execute(self.exists()).first():
24            session.add(self)
25            session.commit()
26
27    def exists(self) -> str:
28        return select(Constraint).filter_by(constraint_id=self.constraint_id)
29
30    def __get_id__(self) -> str:
31        id = json.loads(self.table_id)
32        id["constraint_name"] = self.constraint_name
33        return json.dumps(id)
class Constraint(schema_sentinel.metadata_manager.model.CommonBase): 
10class Constraint(CommonBase):
11    __tablename__ = "constraints"
12    constraint_id = db.Column(db.String, primary_key=True)
13    table_id = db.Column(db.String, ForeignKey("tables.table_id"))
14    constraint_name = db.Column(db.String)
15    constraint_type = db.Column(db.String)
16    constraint_details = db.Column(db.String)
17    reference_key = db.Column(db.String, ForeignKey("constraints.constraint_id"))
18    comment = db.Column(db.String)
19    update_rule = db.Column(db.String, default="NO ACTION")
20    delete_rule = db.Column(db.String, default="NO ACTION")
21    created = db.Column(db.String)
22
23    def save(self, session) -> None:
24        if not session.execute(self.exists()).first():
25            session.add(self)
26            session.commit()
27
28    def exists(self) -> str:
29        return select(Constraint).filter_by(constraint_id=self.constraint_id)
30
31    def __get_id__(self) -> str:
32        id = json.loads(self.table_id)
33        id["constraint_name"] = self.constraint_name
34        return json.dumps(id)

The base class of the class hierarchy.

When called, it accepts no arguments and returns a new featureless instance that has no instance attributes and cannot be given any.

Constraint(**kwargs)

A simple constructor that allows initialization from kwargs.

Sets attributes on the constructed instance using the names and values in kwargs.

Only keys that are present as attributes of the instance's class are allowed. These could be, for example, any mapped columns or relationships.

constraint_id
table_id
constraint_name
constraint_type
constraint_details
reference_key
comment
update_rule
delete_rule
created
def save(self, session) -> None: 
23    def save(self, session) -> None:
24        if not session.execute(self.exists()).first():
25            session.add(self)
26            session.commit()
def exists(self) -> str: 
28    def exists(self) -> str:
29        return select(Constraint).filter_by(constraint_id=self.constraint_id)