/
models.py
537 lines (398 loc) · 16.8 KB
/
models.py
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from datetime import datetime
from sqlalchemy import asc
from sqlalchemy import CheckConstraint
from sqlalchemy import Column
from sqlalchemy import DateTime
from sqlalchemy import desc
from sqlalchemy import Enum
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Float
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import Integer
from sqlalchemy import orm
from sqlalchemy import String
from sqlalchemy import UniqueConstraint
from optuna import distributions
from optuna.study import StudyDirection
from optuna.trial import TrialState
from optuna import type_checking
if type_checking.TYPE_CHECKING:
from typing import Any # NOQA
from typing import List # NOQA
from typing import Optional # NOQA
# Don't modify this version number anymore.
# The schema management functionality has been moved to alembic.
SCHEMA_VERSION = 12
MAX_INDEXED_STRING_LENGTH = 512
MAX_STRING_LENGTH = 2048
MAX_VERSION_LENGTH = 256
NOT_FOUND_MSG = "Record does not exist."
BaseModel = declarative_base() # type: Any
class StudyModel(BaseModel):
__tablename__ = "studies"
study_id = Column(Integer, primary_key=True)
study_name = Column(String(MAX_INDEXED_STRING_LENGTH), index=True, unique=True, nullable=False)
direction = Column(Enum(StudyDirection), nullable=False)
@classmethod
def find_by_id(cls, study_id, session, for_update=False):
# type: (int, orm.Session, bool) -> Optional[StudyModel]
query = session.query(cls).filter(cls.study_id == study_id)
if for_update:
query = query.with_for_update()
return query.one_or_none()
@classmethod
def find_or_raise_by_id(cls, study_id, session, for_update=False):
# type: (int, orm.Session, bool) -> StudyModel
study = cls.find_by_id(study_id, session, for_update)
if study is None:
raise KeyError(NOT_FOUND_MSG)
return study
@classmethod
def find_by_name(cls, study_name, session):
# type: (str, orm.Session) -> Optional[StudyModel]
study = session.query(cls).filter(cls.study_name == study_name).one_or_none()
return study
@classmethod
def find_or_raise_by_name(cls, study_name, session):
# type: (str, orm.Session) -> StudyModel
study = cls.find_by_name(study_name, session)
if study is None:
raise KeyError(NOT_FOUND_MSG)
return study
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[StudyModel]
return session.query(cls).all()
class StudyUserAttributeModel(BaseModel):
__tablename__ = "study_user_attributes"
__table_args__ = (UniqueConstraint("study_id", "key"),) # type: Any
study_user_attribute_id = Column(Integer, primary_key=True)
study_id = Column(Integer, ForeignKey("studies.study_id"))
key = Column(String(MAX_INDEXED_STRING_LENGTH))
value_json = Column(String(MAX_STRING_LENGTH))
study = orm.relationship(
StudyModel, backref=orm.backref("user_attributes", cascade="all, delete-orphan")
)
@classmethod
def find_by_study_and_key(cls, study, key, session):
# type: (StudyModel, str, orm.Session) -> Optional[StudyUserAttributeModel]
attribute = (
session.query(cls)
.filter(cls.study_id == study.study_id)
.filter(cls.key == key)
.one_or_none()
)
return attribute
@classmethod
def where_study_id(cls, study_id, session):
# type: (int, orm.Session) -> List[StudyUserAttributeModel]
return session.query(cls).filter(cls.study_id == study_id).all()
class StudySystemAttributeModel(BaseModel):
__tablename__ = "study_system_attributes"
__table_args__ = (UniqueConstraint("study_id", "key"),) # type: Any
study_system_attribute_id = Column(Integer, primary_key=True)
study_id = Column(Integer, ForeignKey("studies.study_id"))
key = Column(String(MAX_INDEXED_STRING_LENGTH))
value_json = Column(String(MAX_STRING_LENGTH))
study = orm.relationship(
StudyModel, backref=orm.backref("system_attributes", cascade="all, delete-orphan")
)
@classmethod
def find_by_study_and_key(cls, study, key, session):
# type: (StudyModel, str, orm.Session) -> Optional[StudySystemAttributeModel]
attribute = (
session.query(cls)
.filter(cls.study_id == study.study_id)
.filter(cls.key == key)
.one_or_none()
)
return attribute
@classmethod
def where_study_id(cls, study_id, session):
# type: (int, orm.Session) -> List[StudySystemAttributeModel]
return session.query(cls).filter(cls.study_id == study_id).all()
class TrialModel(BaseModel):
__tablename__ = "trials"
trial_id = Column(Integer, primary_key=True)
# No `UniqueConstraint` is put on the `number` columns although it in practice is constrained
# to be unique. This is to reduce code complexity as table-level locking would be required
# otherwise. See https://github.com/optuna/optuna/pull/939#discussion_r387447632.
number = Column(Integer)
study_id = Column(Integer, ForeignKey("studies.study_id"))
state = Column(Enum(TrialState), nullable=False)
value = Column(Float)
datetime_start = Column(DateTime, default=datetime.now)
datetime_complete = Column(DateTime)
study = orm.relationship(
StudyModel, backref=orm.backref("trials", cascade="all, delete-orphan")
)
@classmethod
def find_by_id(cls, trial_id, session, for_update=False):
# type: (int, orm.Session, bool) -> Optional[TrialModel]
query = session.query(cls).filter(cls.trial_id == trial_id)
# "FOR UPDATE" clause is used for row-level locking.
# Please note that SQLite3 doesn't support this clause.
if for_update:
query = query.with_for_update()
return query.one_or_none()
@classmethod
def find_max_value_trial(cls, study_id, session):
# type: (int, orm.Session) -> TrialModel
trial = (
session.query(cls)
.filter(cls.study_id == study_id)
.filter(cls.state == TrialState.COMPLETE)
.order_by(desc(cls.value))
.limit(1)
.one_or_none()
)
if trial is None:
raise ValueError(NOT_FOUND_MSG)
return trial
@classmethod
def find_min_value_trial(cls, study_id, session):
# type: (int, orm.Session) -> TrialModel
trial = (
session.query(cls)
.filter(cls.study_id == study_id)
.filter(cls.state == TrialState.COMPLETE)
.order_by(asc(cls.value))
.limit(1)
.one_or_none()
)
if trial is None:
raise ValueError(NOT_FOUND_MSG)
return trial
@classmethod
def find_or_raise_by_id(cls, trial_id, session):
# type: (int, orm.Session) -> TrialModel
trial = cls.find_by_id(trial_id, session)
if trial is None:
raise KeyError(NOT_FOUND_MSG)
return trial
@classmethod
def where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[TrialModel]
trials = (
session.query(cls).filter(cls.study_id == study.study_id).order_by(cls.trial_id).all()
)
return trials
@classmethod
def count(cls, session, study=None, state=None):
# type: (orm.Session, Optional[StudyModel], Optional[TrialState]) -> int
trial_count = session.query(func.count(cls.trial_id))
if study is not None:
trial_count = trial_count.filter(cls.study_id == study.study_id)
if state is not None:
trial_count = trial_count.filter(cls.state == state)
return trial_count.scalar()
def count_past_trials(self, session):
# type: (orm.Session) -> int
trial_count = session.query(func.count(TrialModel.trial_id)).filter(
TrialModel.study_id == self.study_id, TrialModel.trial_id < self.trial_id
)
return trial_count.scalar()
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[TrialModel]
return session.query(cls).all()
@classmethod
def get_all_trial_ids_where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[int]
trials = (
session.query(cls.trial_id)
.filter(cls.study_id == study.study_id)
.order_by(cls.trial_id)
.all()
)
return [t.trial_id for t in trials]
class TrialUserAttributeModel(BaseModel):
__tablename__ = "trial_user_attributes"
__table_args__ = (UniqueConstraint("trial_id", "key"),) # type: Any
trial_user_attribute_id = Column(Integer, primary_key=True)
trial_id = Column(Integer, ForeignKey("trials.trial_id"))
key = Column(String(MAX_INDEXED_STRING_LENGTH))
value_json = Column(String(MAX_STRING_LENGTH))
trial = orm.relationship(
TrialModel, backref=orm.backref("user_attributes", cascade="all, delete-orphan")
)
@classmethod
def find_by_trial_and_key(cls, trial, key, session):
# type: (TrialModel, str, orm.Session) -> Optional[TrialUserAttributeModel]
attribute = (
session.query(cls)
.filter(cls.trial_id == trial.trial_id)
.filter(cls.key == key)
.one_or_none()
)
return attribute
@classmethod
def where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[TrialUserAttributeModel]
trial_user_attributes = (
session.query(cls).join(TrialModel).filter(TrialModel.study_id == study.study_id).all()
)
return trial_user_attributes
@classmethod
def where_trial(cls, trial, session):
# type: (TrialModel, orm.Session) -> List[TrialUserAttributeModel]
return cls.where_trial_id(trial.trial_id, session)
@classmethod
def where_trial_id(cls, trial_id, session):
# type: (int, orm.Session) -> List[TrialUserAttributeModel]
return session.query(cls).filter(cls.trial_id == trial_id).all()
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[TrialUserAttributeModel]
return session.query(cls).all()
class TrialSystemAttributeModel(BaseModel):
__tablename__ = "trial_system_attributes"
__table_args__ = (UniqueConstraint("trial_id", "key"),) # type: Any
trial_system_attribute_id = Column(Integer, primary_key=True)
trial_id = Column(Integer, ForeignKey("trials.trial_id"))
key = Column(String(MAX_INDEXED_STRING_LENGTH))
value_json = Column(String(MAX_STRING_LENGTH))
trial = orm.relationship(
TrialModel, backref=orm.backref("system_attributes", cascade="all, delete-orphan")
)
@classmethod
def find_by_trial_and_key(cls, trial, key, session):
# type: (TrialModel, str, orm.Session) -> Optional[TrialSystemAttributeModel]
attribute = (
session.query(cls)
.filter(cls.trial_id == trial.trial_id)
.filter(cls.key == key)
.one_or_none()
)
return attribute
@classmethod
def where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[TrialSystemAttributeModel]
trial_system_attributes = (
session.query(cls).join(TrialModel).filter(TrialModel.study_id == study.study_id).all()
)
return trial_system_attributes
@classmethod
def where_trial(cls, trial, session):
# type: (TrialModel, orm.Session) -> List[TrialSystemAttributeModel]
return cls.where_trial_id(trial.trial_id, session)
@classmethod
def where_trial_id(cls, trial_id, session):
# type: (int, orm.Session) -> List[TrialSystemAttributeModel]
return session.query(cls).filter(cls.trial_id == trial_id).all()
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[TrialSystemAttributeModel]
return session.query(cls).all()
class TrialParamModel(BaseModel):
__tablename__ = "trial_params"
__table_args__ = (UniqueConstraint("trial_id", "param_name"),) # type: Any
param_id = Column(Integer, primary_key=True)
trial_id = Column(Integer, ForeignKey("trials.trial_id"))
param_name = Column(String(MAX_INDEXED_STRING_LENGTH))
param_value = Column(Float)
distribution_json = Column(String(MAX_STRING_LENGTH))
trial = orm.relationship(
TrialModel, backref=orm.backref("params", cascade="all, delete-orphan")
)
def check_and_add(self, session):
# type: (orm.Session) -> None
self._check_compatibility_with_previous_trial_param_distributions(session)
session.add(self)
def _check_compatibility_with_previous_trial_param_distributions(self, session):
# type: (orm.Session) -> None
trial = TrialModel.find_or_raise_by_id(self.trial_id, session)
previous_record = (
session.query(TrialParamModel)
.join(TrialModel)
.filter(TrialModel.study_id == trial.study_id)
.filter(TrialParamModel.param_name == self.param_name)
.first()
)
if previous_record is not None:
distributions.check_distribution_compatibility(
distributions.json_to_distribution(previous_record.distribution_json),
distributions.json_to_distribution(self.distribution_json),
)
@classmethod
def find_by_trial_and_param_name(cls, trial, param_name, session):
# type: (TrialModel, str, orm.Session) -> Optional[TrialParamModel]
param_distribution = (
session.query(cls)
.filter(cls.trial_id == trial.trial_id)
.filter(cls.param_name == param_name)
.one_or_none()
)
return param_distribution
@classmethod
def find_or_raise_by_trial_and_param_name(cls, trial, param_name, session):
# type: (TrialModel, str, orm.Session) -> TrialParamModel
param_distribution = cls.find_by_trial_and_param_name(trial, param_name, session)
if param_distribution is None:
raise KeyError(NOT_FOUND_MSG)
return param_distribution
@classmethod
def where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[TrialParamModel]
trial_params = (
session.query(cls).join(TrialModel).filter(TrialModel.study_id == study.study_id).all()
)
return trial_params
@classmethod
def where_trial(cls, trial, session):
# type: (TrialModel, orm.Session) -> List[TrialParamModel]
trial_params = session.query(cls).filter(cls.trial_id == trial.trial_id).all()
return trial_params
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[TrialParamModel]
return session.query(cls).all()
class TrialValueModel(BaseModel):
__tablename__ = "trial_values"
__table_args__ = (UniqueConstraint("trial_id", "step"),) # type: Any
trial_value_id = Column(Integer, primary_key=True)
trial_id = Column(Integer, ForeignKey("trials.trial_id"))
step = Column(Integer)
value = Column(Float)
trial = orm.relationship(
TrialModel, backref=orm.backref("values", cascade="all, delete-orphan")
)
@classmethod
def find_by_trial_and_step(cls, trial, step, session):
# type: (TrialModel, int, orm.Session) -> Optional[TrialValueModel]
trial_value = (
session.query(cls)
.filter(cls.trial_id == trial.trial_id)
.filter(cls.step == step)
.one_or_none()
)
return trial_value
@classmethod
def where_study(cls, study, session):
# type: (StudyModel, orm.Session) -> List[TrialValueModel]
trial_values = (
session.query(cls).join(TrialModel).filter(TrialModel.study_id == study.study_id).all()
)
return trial_values
@classmethod
def where_trial(cls, trial, session):
# type: (TrialModel, orm.Session) -> List[TrialValueModel]
trial_values = session.query(cls).filter(cls.trial_id == trial.trial_id).all()
return trial_values
@classmethod
def all(cls, session):
# type: (orm.Session) -> List[TrialValueModel]
return session.query(cls).all()
class VersionInfoModel(BaseModel):
__tablename__ = "version_info"
# setting check constraint to ensure the number of rows is at most 1
__table_args__ = (CheckConstraint("version_info_id=1"),) # type: Any
version_info_id = Column(Integer, primary_key=True, autoincrement=False, default=1)
schema_version = Column(Integer)
library_version = Column(String(MAX_VERSION_LENGTH))
@classmethod
def find(cls, session):
# type: (orm.Session) -> VersionInfoModel
version_info = session.query(cls).one_or_none()
return version_info