File size: 2,817 Bytes
6f5156a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | import logging
import re
from datetime import date
from datasets import load_dataset
from legex.config import settings
from legex.models.base import Case
from legex.scrapers.base import BaseScraper
DATASET_PATH = "openlegaldata/court-decisions-germany"
DATASET_NAME = 'dump-20221018'
# OpenLegalData shifts the `date` field for anonymity. Real year is encoded in
# file_number as the trailing /YY slash-suffix, for example "XII ZR 17/18" to 2018.
# Civil BGH senates are numbered with Roman numerals followed by ZR/ZB/ZA.
_RE_YEAR = re.compile(r"/(\d{2,4})\s*$")
_RE_CIVIL = re.compile(r"^([IVXLCDM]+)\s+(ZR|ZB|ZA)\b")
log = logging.getLogger(__name__)
class DEScraper(BaseScraper):
country = "Deutschland"
def scrape(
self,
start_date: date | None = None,
end_date: date | None = None,
) -> list[Case]:
log.info(f"Loading {DATASET_PATH} (gated; requires HF_TOKEN) …")
dataset = load_dataset(path=DATASET_PATH, name=DATASET_NAME, split="train", token=settings.hf_token or None)
cases = [
self._row_to_case(row) for row in dataset
if (row.get("court") or {}).get("name") == "Bundesgerichtshof"
]
cases = [c for c in cases if c is not None]
if start_date or end_date:
start_year = start_date.year if start_date else 0
end_year = end_date.year if end_date else 9999
cases = [
c for c in cases
if start_year <= (c.decision_date.year if c.decision_date else 0) <= end_year
]
cases.sort(key=lambda c: c.decision_date or date.min, reverse=True)
log.info(f"{len(cases)} BGH cases after year filter")
return cases
@staticmethod
def _row_to_case(row: dict) -> Case | None:
file_number = row.get("file_number") or ""
m = _RE_YEAR.search(file_number)
if not m:
return None
year = int(m.group(1))
if year < 50:
year += 2000
elif year < 100:
year += 1900
# Use January 1 of the inferred year, the real day/month is shifted.
decision_date = date(year, 1, 1)
content = row.get("markdown_content") or row.get("content") or ""
return Case(
case_id=file_number,
link=f"https://de.openlegaldata.io/case/{row.get('id')}",
decision_date=decision_date,
jurisdiction="de",
language="de",
full_text=content,
metadata={
"ecli": row.get("ecli"),
"type": row.get("type"),
"slug": row.get("slug"),
},
)
@staticmethod
def civil_filter(cases: list[Case]) -> list[Case]:
return [c for c in cases if _RE_CIVIL.match(c.case_id or "")]
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