class Father(Entity):
name = Field(Unicode(100))
children = OneToMany('Child')
class Child(Entity):
name = Field(Unicode(100))
father = ManyToOne('Father')
class Child1_4(Entity):
name = Field(Text)
parent = ManyToOne('Parent1_4')
class Language(Entity):
using_options = {'auto_primarykey': False}
id = Field(Unicode(50), primary_key=True)
label = Field(Unicode(50))
class Child1_3(Entity):
name = Field(Text)
parent = ManyToOne('Parent1_3', inverse='children')
class Parent1_4(Entity):
name = Field(Text)
children = OneToMany('Child1_4')
class Parent1_2(Entity):
name = Field(Text)
children = OneToMany('Child1_2', inverse='parent')
class Child1_2(Entity):
name = Field(Text)
class Engine4_4(Entity):
name = Field(Text)
car = ManyToOne('Car4_4')
class Car4_4(Entity):
name = Field(Text)
engine = OneToOne('Engine4_4')
class Engine4_3(Entity):
name = Field(Text)
car = ManyToOne('Car4_3', inverse='engine')
class Car4_3(Entity):
name = Field(Text)
engine = OneToOne('Engine4_3', inverse='car')
class Engine4_2(Entity):
name = Field(Text)
