class DataSet(struct.Schema):
"""Testing schema.
The actual fields are irrelevant.
"""
feature: struct.Field = struct.Field(kind.Integer())
label: struct.Field = struct.Field(kind.Float())
def schema(self) -> typing.Type['struct.Schema']:
"""Get the schema type for this source.
Returns:
Schema type.
"""
return Table.Schema(
f'{self.__class__.__name__}Schema',
(struct.Schema.schema,),
{(c.name or f'_{i}'): struct.Field(c.kind, c.name) for i, c in enumerate(self.columns)},
)
class Human(struct.Schema):
"""Human schema representation."""
name = struct.Field(kind.String())
age = struct.Field(kind.Integer())
class School(struct.Schema):
"""School table."""
sid = struct.Field(kind.Integer(), 'id')
name = struct.Field(kind.String())
class Demo(struct.Schema):
"""Demo schema representation."""
Label = struct.Field(kind.Integer())
Age = struct.Field(kind.Integer())
class Person(struct.Schema):
"""Base table."""
surname = struct.Field(kind.String())
dob = struct.Field(kind.Date(), 'birthday')
class Student(person):
"""Extended table."""
level = struct.Field(kind.Integer())
score = struct.Field(kind.Float())
school = struct.Field(kind.Integer())
class Child(Base):
"""Child schema - adding a field "last" plus overriding kind of the "fixme" field."""
last = struct.Field(kind.Integer())
fixme = struct.Field(kind.String(), name='new')
class Base(struct.Schema):
"""Base schema."""
first = struct.Field(kind.Integer())
fixme = struct.Field(kind.Float(), name='old')
class Override(schema):
"""Schema with overridden field kind."""
school = struct.Field(kind.String())
class Colliding(schema):
"""Schema with colliding field names."""
birthday = struct.Field(kind.Integer())
class HelloWorld(struct.Schema):
"""Base table."""
name = struct.Field(kind.String())
