afv-library/skills/tableau-next-semantic-model-generate/scripts/query_data.py

60 lines
1.8 KiB
Python

#!/usr/bin/env python3
"""Data-presence gate for DLO/DMO objects.
Prove an object returns rows before authoring fields/metrics on it. Field-richness
is not data-presence: an object can carry dozens of fields and still return zero
rows. See references/empty-source-handling.md.
Exit codes:
0 — count > 0 (shippable)
1 — indeterminate (count query failed / unreadable; treat as advisory, not empty)
2 — count == 0 (confirmed empty; do NOT build on it)
Usage:
python scripts/query_data.py --count <Object__dll-or-__dlm>
python scripts/query_data.py --count <Object> --dataspace <ds>
"""
import argparse
import sys
from _shared.query import count_rows
def main() -> None:
parser = argparse.ArgumentParser(
description="Confirm a DLO/DMO returns rows before authoring on it."
)
parser.add_argument(
"--count",
metavar="OBJECT",
required=True,
help="Object API name (e.g. Account_Home__dll or Opportunity__dlm).",
)
parser.add_argument(
"--dataspace",
default=None,
help="Optional dataspace; omit for the org default.",
)
args = parser.parse_args()
count, err = count_rows(args.count, dataspace=args.dataspace)
if count is None:
print(
f"INDETERMINATE: could not confirm data presence for '{args.count}' ({err}). "
"Advisory only — a transient query failure must not false-block authoring.",
file=sys.stderr,
)
sys.exit(1)
if count == 0:
print(
f"EMPTY: '{args.count}' returned 0 rows. NOT shippable — anything built on "
"it will render 'No results to show.' See empty-source-handling.md."
)
sys.exit(2)
print(f"OK: '{args.count}' has {count} row(s). Shippable.")
if __name__ == "__main__":
main()