schema_sentinel.metadata_manager.model.referential_constraint 

 1import json
 2
 3import sqlalchemy as db
 4from sqlalchemy import ForeignKey, select
 5
 6from . import CommonBase
 7
 8
 9class ReferentialConstraint(CommonBase):
10    __tablename__ = "referential_constraints"
11    referential_constraint_id = db.Column(db.String, primary_key=True)
12    foreign_key_constraint_id = db.Column(db.String, ForeignKey("constraints.constraint_id"))
13    unique_constraint_id = db.Column(db.String, ForeignKey("constraints.constraint_id"))
14    fk_name = db.Column(db.String)
15    pk_name = db.Column(db.String)
16
17    match_option = db.Column(db.String)
18    update_rule = db.Column(db.String)
19    delete_rule = db.Column(db.String)
20    comment = db.Column(db.String)
21    created = db.Column(db.String)
22    last_altered = db.Column(db.String)
23
24    def save(self, session) -> None:
25        if not session.execute(self.exists()).first():
26            session.add(self)
27            session.commit()
28
29    def exists(self) -> str:
30        return select(ReferentialConstraint).filter_by(
31            foreign_key_constraint_id=self.foreign_key_constraint_id,
32            unique_constraint_id=self.unique_constraint_id,
33        )
34
35    def __get_id__(self) -> str:
36        return json.dumps(
37            {
38                "foreign_key_constraint_id": json.loads(self.foreign_key_constraint_id),
39                "unique_constraint_id": json.loads(self.unique_constraint_id),
40            }
41        )
class ReferentialConstraint(schema_sentinel.metadata_manager.model.CommonBase): 
10class ReferentialConstraint(CommonBase):
11    __tablename__ = "referential_constraints"
12    referential_constraint_id = db.Column(db.String, primary_key=True)
13    foreign_key_constraint_id = db.Column(db.String, ForeignKey("constraints.constraint_id"))
14    unique_constraint_id = db.Column(db.String, ForeignKey("constraints.constraint_id"))
15    fk_name = db.Column(db.String)
16    pk_name = db.Column(db.String)
17
18    match_option = db.Column(db.String)
19    update_rule = db.Column(db.String)
20    delete_rule = db.Column(db.String)
21    comment = db.Column(db.String)
22    created = db.Column(db.String)
23    last_altered = db.Column(db.String)
24
25    def save(self, session) -> None:
26        if not session.execute(self.exists()).first():
27            session.add(self)
28            session.commit()
29
30    def exists(self) -> str:
31        return select(ReferentialConstraint).filter_by(
32            foreign_key_constraint_id=self.foreign_key_constraint_id,
33            unique_constraint_id=self.unique_constraint_id,
34        )
35
36    def __get_id__(self) -> str:
37        return json.dumps(
38            {
39                "foreign_key_constraint_id": json.loads(self.foreign_key_constraint_id),
40                "unique_constraint_id": json.loads(self.unique_constraint_id),
41            }
42        )

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.

ReferentialConstraint(**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.

referential_constraint_id
foreign_key_constraint_id
unique_constraint_id
fk_name
pk_name
match_option
update_rule
delete_rule
comment
created
last_altered
def save(self, session) -> None: 
25    def save(self, session) -> None:
26        if not session.execute(self.exists()).first():
27            session.add(self)
28            session.commit()
def exists(self) -> str: 
30    def exists(self) -> str:
31        return select(ReferentialConstraint).filter_by(
32            foreign_key_constraint_id=self.foreign_key_constraint_id,
33            unique_constraint_id=self.unique_constraint_id,
34        )