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5cceba0 | 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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | """SQLite FTS5 fee-code store for the no-OpenSearch pilot backend."""
from __future__ import annotations
import json
import logging
import re
import sqlite3
from pathlib import Path
from .config import settings
logger = logging.getLogger(__name__)
_FTS_SAFE = re.compile(r"[^A-Za-z0-9]+")
def db_path() -> Path:
return Path(settings.sqlite_index_path)
def connect() -> sqlite3.Connection:
path = db_path()
path.parent.mkdir(parents=True, exist_ok=True)
conn = sqlite3.connect(str(path), check_same_thread=False)
conn.row_factory = sqlite3.Row
return conn
def ensure_schema(conn: sqlite3.Connection | None = None) -> None:
own = conn is None
conn = conn or connect()
try:
conn.executescript(
"""
CREATE TABLE IF NOT EXISTS fee_codes (
billing_code TEXT PRIMARY KEY,
description_text TEXT NOT NULL DEFAULT '',
rules_and_constraints TEXT NOT NULL DEFAULT '',
parent_section TEXT NOT NULL DEFAULT '',
base_fee_cad REAL NOT NULL DEFAULT 0,
reference TEXT,
differentiators_json TEXT,
fee_components_json TEXT,
effective_date TEXT,
termination_date TEXT,
in_current_schedule INTEGER NOT NULL DEFAULT 0,
has_description INTEGER NOT NULL DEFAULT 0
);
CREATE VIRTUAL TABLE IF NOT EXISTS fee_codes_fts USING fts5(
billing_code,
description_text,
rules_and_constraints,
parent_section,
tokenize = 'porter'
);
"""
)
conn.commit()
finally:
if own:
conn.close()
def _row_to_doc(row: sqlite3.Row | dict) -> dict:
data = dict(row)
diffs = None
fees = None
if data.get("differentiators_json"):
try:
diffs = json.loads(data["differentiators_json"])
except json.JSONDecodeError:
diffs = None
if data.get("fee_components_json"):
try:
fees = json.loads(data["fee_components_json"])
except json.JSONDecodeError:
fees = None
return {
"billing_code": data["billing_code"],
"description_text": data.get("description_text") or "",
"rules_and_constraints": data.get("rules_and_constraints") or "",
"parent_section": data.get("parent_section") or "",
"base_fee_cad": float(data.get("base_fee_cad") or 0),
"reference": data.get("reference"),
"differentiators": diffs,
"fee_components": fees,
"effective_date": data.get("effective_date"),
"termination_date": data.get("termination_date"),
"in_current_schedule": bool(data.get("in_current_schedule")),
"has_description": bool(data.get("has_description")),
"score": data.get("score"),
}
def replace_all(docs: list[dict]) -> int:
"""Rebuild the SQLite index from schedule documents."""
conn = connect()
try:
conn.execute("DROP TABLE IF EXISTS fee_codes_fts")
conn.execute("DROP TABLE IF EXISTS fee_codes")
ensure_schema(conn)
rows = []
fts_rows = []
for doc in docs:
rows.append(
(
doc["billing_code"],
doc.get("description_text") or "",
doc.get("rules_and_constraints") or "",
doc.get("parent_section") or "",
float(doc.get("base_fee_cad") or 0),
doc.get("reference"),
json.dumps(doc.get("differentiators"))
if doc.get("differentiators")
else None,
json.dumps(doc.get("fee_components"))
if doc.get("fee_components")
else None,
doc.get("effective_date"),
doc.get("termination_date"),
1 if doc.get("in_current_schedule") else 0,
1 if doc.get("has_description") else 0,
)
)
fts_rows.append(
(
doc["billing_code"],
doc.get("description_text") or "",
doc.get("rules_and_constraints") or "",
doc.get("parent_section") or "",
)
)
conn.executemany(
"""
INSERT INTO fee_codes (
billing_code, description_text, rules_and_constraints, parent_section,
base_fee_cad, reference, differentiators_json, fee_components_json,
effective_date, termination_date, in_current_schedule, has_description
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
""",
rows,
)
conn.executemany(
"""
INSERT INTO fee_codes_fts (
billing_code, description_text, rules_and_constraints, parent_section
) VALUES (?, ?, ?, ?)
""",
fts_rows,
)
conn.commit()
n = conn.execute("SELECT COUNT(*) FROM fee_codes").fetchone()[0]
logger.info("SQLite fee index rebuilt with %d codes at %s", n, db_path())
return int(n)
finally:
conn.close()
def count_codes() -> int:
if not db_path().exists():
return 0
conn = connect()
try:
ensure_schema(conn)
return int(conn.execute("SELECT COUNT(*) FROM fee_codes").fetchone()[0])
finally:
conn.close()
def get_code(code: str) -> dict | None:
if not code:
return None
conn = connect()
try:
ensure_schema(conn)
row = conn.execute(
"SELECT *, NULL AS score FROM fee_codes WHERE billing_code = ?",
(code.upper(),),
).fetchone()
return _row_to_doc(row) if row else None
finally:
conn.close()
def all_current_docs() -> list[dict]:
conn = connect()
try:
ensure_schema(conn)
rows = conn.execute(
"SELECT *, NULL AS score FROM fee_codes WHERE in_current_schedule = 1"
).fetchall()
return [_row_to_doc(r) for r in rows]
finally:
conn.close()
def _fts_query(text: str) -> str:
tokens = [t for t in _FTS_SAFE.split(text.upper()) if len(t) >= 2]
tokens = tokens[:24]
if not tokens:
return "code OR visit OR assessment"
return " OR ".join(tokens)
def fts_search(query_text: str, *, top_k: int = 40) -> list[dict]:
"""Lexical search over the fee schedule (FTS5 BM25 rank)."""
conn = connect()
try:
ensure_schema(conn)
q = _fts_query(query_text)
rows = conn.execute(
"""
SELECT c.*, bm25(fee_codes_fts) AS score
FROM fee_codes_fts
JOIN fee_codes c ON c.billing_code = fee_codes_fts.billing_code
WHERE fee_codes_fts MATCH ?
AND c.in_current_schedule = 1
ORDER BY score
LIMIT ?
""",
(q, top_k),
).fetchall()
docs = []
for r in rows:
doc = _row_to_doc(r)
raw = doc.get("score")
doc["score"] = float(-raw) if raw is not None else 0.0
docs.append(doc)
return docs
except sqlite3.OperationalError as exc:
logger.warning("FTS search failed (%s); returning empty", exc)
return []
finally:
conn.close()
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