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73 lines
3 KiB
Python
73 lines
3 KiB
Python
"""SQLModel mirror of the ``landlord_construction_age_band_overrides`` Drizzle table.
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The schema source of truth lives in the ``assessment-model`` TS repo
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(`src/app/db/schema/landlord_overrides.ts`). The migrations are owned there;
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this row class only mirrors the columns so the Python lambda can read/write.
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See ADR-0003. Shape mirrors ``LandlordWallTypeOverrideRow`` -- the only
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differences are the table name, the ``construction_age_band`` pgEnum on
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``value``, and the unique-constraint name.
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"""
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from datetime import datetime, timezone
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from typing import ClassVar
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from uuid import UUID, uuid4
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from sqlalchemy import BigInteger, Column, UniqueConstraint
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from sqlalchemy import Enum as SAEnum
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from sqlmodel import Field, SQLModel
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from domain.epc.property_overrides.construction_age_band import ConstructionAgeBand
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from infrastructure.postgres.landlord_override_enums import override_source_sa_enum
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class LandlordConstructionAgeBandOverrideRow(SQLModel, table=True):
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__tablename__: ClassVar[str] = "landlord_construction_age_band_overrides" # pyright: ignore[reportIncompatibleVariableOverride]
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__table_args__: ClassVar[tuple[UniqueConstraint, ...]] = ( # pyright: ignore[reportIncompatibleVariableOverride]
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# NB: shortened (drop the redundant ``_overrides``) to stay within
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# PostgreSQL's 63-char identifier limit -- the full
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# ``landlord_construction_age_band_overrides_portfolio_description_unique``
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# is 68 chars and would be silently truncated, diverging from Drizzle.
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UniqueConstraint(
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"portfolio_id",
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"description",
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name="landlord_construction_age_band_portfolio_description_unique",
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),
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)
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id: UUID = Field(default_factory=uuid4, primary_key=True)
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# bigint to match the Drizzle ``portfolio_id`` FK; SQLModel's default int
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# mapping is 32-bit Integer and would overflow once portfolio IDs exceed
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# 2^31. The FK to ``portfolio.id`` is enforced by the Drizzle migration,
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# not declared here -- the ``portfolio`` table is not modelled in Python.
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portfolio_id: int = Field(
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sa_column=Column(BigInteger, nullable=False, index=True),
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)
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description: str = Field(nullable=False)
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value: ConstructionAgeBand = Field(
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sa_column=Column(
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SAEnum(
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ConstructionAgeBand,
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name="construction_age_band",
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values_callable=lambda cls: [m.value for m in cls], # pyright: ignore[reportUnknownLambdaType, reportUnknownMemberType, reportUnknownVariableType]
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),
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nullable=False,
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),
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)
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# Shared SAEnum -- see ``landlord_override_enums`` for why this single
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# instance is reused by every ``landlord_*_overrides`` row class.
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source: str = Field(
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sa_column=Column(override_source_sa_enum, nullable=False),
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)
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created_at: datetime = Field(
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default_factory=lambda: datetime.now(timezone.utc),
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nullable=False,
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)
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updated_at: datetime = Field(
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default_factory=lambda: datetime.now(timezone.utc),
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nullable=False,
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)
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