superset annotations 源码
superset annotations 代码
文件路径：/superset/models/annotations.py
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# to you under the Apache License, Version 2.0 (the
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#
# http://www.apache.org/licenses/LICENSE-2.0
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"""a collection of Annotation-related models"""
from typing import Any, Dict
from flask_appbuilder import Model
from sqlalchemy import Column, DateTime, ForeignKey, Index, Integer, String, Text
from sqlalchemy.orm import relationship
from superset.models.helpers import AuditMixinNullable
class AnnotationLayer(Model, AuditMixinNullable):
"""A logical namespace for a set of annotations"""
__tablename__ = "annotation_layer"
id = Column(Integer, primary_key=True)
name = Column(String(250))
descr = Column(Text)
def __repr__(self) -> str:
return str(self.name)
class Annotation(Model, AuditMixinNullable):
"""Time-related annotation"""
__tablename__ = "annotation"
id = Column(Integer, primary_key=True)
start_dttm = Column(DateTime)
end_dttm = Column(DateTime)
layer_id = Column(Integer, ForeignKey("annotation_layer.id"), nullable=False)
short_descr = Column(String(500))
long_descr = Column(Text)
layer = relationship(AnnotationLayer, backref="annotation")
json_metadata = Column(Text)
__table_args__ = (Index("ti_dag_state", layer_id, start_dttm, end_dttm),)
@property
def data(self) -> Dict[str, Any]:
return {
"layer_id": self.layer_id,
"start_dttm": self.start_dttm,
"end_dttm": self.end_dttm,
"short_descr": self.short_descr,
"long_descr": self.long_descr,
"layer": self.layer.name if self.layer else None,
}
def __repr__(self) -> str:
return str(self.short_descr)
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