36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
"""AnnotationState model — current working annotation layer per document."""
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from datetime import UTC, datetime
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from typing import TYPE_CHECKING
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from sqlalchemy import ForeignKey, Text
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.db import Base
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if TYPE_CHECKING:
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from app.models.document import Document
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def _now_iso() -> str:
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return datetime.now(UTC).isoformat()
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class AnnotationState(Base):
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"""
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Current working annotation state for a document.
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One row per document. `data` is a JSON text column containing
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the full annotation array — opaque to the server except during export.
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"""
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__tablename__ = "annotation_states"
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document_id: Mapped[str] = mapped_column(
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Text, ForeignKey("documents.id", ondelete="CASCADE"), primary_key=True
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)
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data: Mapped[str] = mapped_column(Text, default="[]") # JSON array
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updated_at: Mapped[str] = mapped_column(Text, default=_now_iso, onupdate=_now_iso)
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# Relationships
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document: Mapped["Document"] = relationship("Document", back_populates="annotation_state")
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