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schema

SQLAlchemy ORM for the fluid_calculation cache table (v1).

Each version package declares its own local Base (its own MetaData) so that multiple versions of the same table can coexist in one process without a __tablename__ collision. Base carries the shared nullable tags column and every ORM in this version inherits it directly.

Adding a column to a new version is an additive migration (see migrations.py): add a nullable mapped_column in the new version's schema and a corresponding upgrade step — never rename/drop/retype in place.

Classes​

Base​

class Base(**kwargs: Any):

Local declarative base for fluid_calculation v1.

Owns an isolated MetaData (so it never collides with another version of this table) and inherits the shared columns from types/schema.py's Base.

A simple constructor that allows initialization from kwargs.

Sets attributes on the constructed instance using the names and values in kwargs.

Only keys that are present as attributes of the instance's class are allowed. These could be, for example, any mapped columns or relationships.

Ancestors​

Subclasses​

Variables​

  • static metadata
  • static registry

FluidCalculation​

class FluidCalculation(**kwargs):

SQLAlchemy model for the fluid_calculation cache table.

One row per (task_hash, file_id): the fluid volume metrics computed for a scan from pathology model predictions. Fluid volume is a deterministic function of the scan and the pathology output (and the config, which folds into task_hash) — NOT of the project — so project_id is provenance only and excluded from the key, letting two projects on the same datasource share rows (mirrors model_inferences).

The metrics live in the schemaless metrics_json blob (the FluidVolumeMetrics scalar fields plus the variable segmentation_volumes map). A per-file error string (missing-data reason or calculation_error:...) is stored in error instead; exactly one of the two is populated for any given row.

A simple constructor that allows initialization from kwargs.

Sets attributes on the constructed instance using the names and values in kwargs.

Only keys that are present as attributes of the instance's class are allowed. These could be, for example, any mapped columns or relationships.

Ancestors​

Variables​

  • error : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • file_id : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • last_accessed_at : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • metrics_json : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • processed_at : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • project_id : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • run_id : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • tags : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]
  • task_hash : Union[sqlalchemy.orm.attributes.InstrumentedAttribute[+_T_co], +_T_co]