Source code for cobra_component_models.orm.mixin.annotation_mixin
# Copyright (c) 2019, Moritz E. Beber.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Provide a component annotation mixin with the corresponding ORM columns."""
# import logging
from sqlalchemy import Boolean, Column, ForeignKey, Integer, String
from sqlalchemy.ext.declarative import declared_attr
from sqlalchemy.orm import relationship
# logger = logging.getLogger(__name__)
[docs]class AnnotationMixin:
"""
Define a component annotation mixin.
Attributes
----------
identifier : str
The annotation identifier.
is_deprecated: bool, optional
Whether the identifier is a deprecated one. Deprecated identifiers are still
useful for identifying components from old data.
namespace_id : int
The foreign key of the related Identifiers.org namespace.
biology_qualifier_id : int
The foreign key of the related biology qualifier.
"""
identifier: str = Column(String, nullable=False, index=True)
is_deprecated: bool = Column(Boolean, default=False, nullable=False)
[docs] def __init__(self, *, is_deprecated: bool = False, **kwargs) -> None:
"""Create an instance with a default value."""
super().__init__(**kwargs)
self.is_deprecated = is_deprecated
@declared_attr
def namespace_id(cls):
"""Defer the namespace id field instantiation."""
return Column(Integer, ForeignKey("namespaces.id"), nullable=False)
@declared_attr
def namespace(cls):
"""Defer the namespace field instantiation."""
return relationship("Namespace")
@declared_attr
def biology_qualifier_id(cls):
"""Defer the biology qualifier id field instantiation."""
return Column(Integer, ForeignKey("biology_qualifiers.id"), nullable=False)
@declared_attr
def biology_qualifier(cls):
"""Defer the biology qualifier field instantiation."""
return relationship("BiologyQualifier")
# FIXME: The namespace attribute is not initialized at the time of validation.
# Try to use events maybe
# (https://docs.sqlalchemy.org/en/13/orm/events.html#attribute-events)?
# @validates("identifier")
# def validate_identifier(self, _, identifier: str):
# """Use the namespace's pattern to validate the identifier."""
# if self.namespace.compiled_pattern.match(identifier) is None:
# logger.warning(
# f"Identifier '{identifier}' does not match "
# f"{self.namespace.name}'s pattern '{self.namespace.pattern}'."
# )
# return identifier