49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
from typing import Optional
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from folkugat_web.dal.sql import Connection, get_connection
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from folkugat_web.model import temes as model
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from ._conversion import cell_to_ngrams, row_to_tema
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TEMA_ID_TO_NGRAMS_CACHE = None
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def get_tema_by_id(tema_id: int, con: Optional[Connection] = None) -> Optional[model.Tema]:
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query = """
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SELECT
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id, title, properties, links, lyrics, alternatives, ngrams,
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creation_date, modification_date, hidden
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FROM temes
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WHERE id = :id
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"""
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data = dict(id=tema_id)
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with get_connection(con) as con:
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cur = con.cursor()
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cur.execute(query, data)
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row = cur.fetchone()
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return row_to_tema(row) if row else None
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def evict_tema_id_to_ngrams_cache():
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global TEMA_ID_TO_NGRAMS_CACHE
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TEMA_ID_TO_NGRAMS_CACHE = None
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def get_tema_id_to_ngrams(con: Optional[Connection] = None) -> dict[int, model.NGrams]:
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global TEMA_ID_TO_NGRAMS_CACHE
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if TEMA_ID_TO_NGRAMS_CACHE is None:
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TEMA_ID_TO_NGRAMS_CACHE = _get_tema_id_to_ngrams(con)
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return TEMA_ID_TO_NGRAMS_CACHE
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def _get_tema_id_to_ngrams(con: Optional[Connection] = None) -> dict[int, model.NGrams]:
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query = """
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SELECT id, ngrams
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FROM temes
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"""
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with get_connection(con) as con:
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cur = con.cursor()
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cur.execute(query)
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rows = cur.fetchall()
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return {id_: cell_to_ngrams(ng) for id_, ng in rows}
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