fix: convert NumPy arrays in insert_many vector field (Fixes #1002)

[rtmalikian]

Fixes #1002

Problem

insert_many() in executor.py constructs _BatchObject directly without converting the vector field, causing NumPy arrays, torch tensors, and other supported vector types to be silently discarded.

BatchObject.__init__() already handles this via _get_vector_v4(), but insert_many bypasses BatchObject and uses the plain _BatchObject dataclass directly, which stores whatever is passed without conversion.

Solution

Applied _get_vector_v4() conversion in insert_many() before storing the vector in _BatchObject, matching the behavior of BatchObject.__init__(). Also handles named vectors (dict[str, vector]) by converting each value.

Files Changed

• weaviate/collections/data/executor.py — Added _get_vector_v4() conversion for both single vectors and named vector dicts

Verification

• Ruff lint passes: All checks passed!
• Python syntax check passes
• _get_vector_v4() is already imported (line 63) and used elsewhere in the same file (lines 715, 717)
• The fix pattern matches existing vector conversion code at lines 709-717

Changelog

Date	Change	Author
2026-06-27	Added vector type conversion in insert_many (Fixes #1002)	rtmalikian

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About the Author: Raphael Malikian — Clinical AI Solutions Architect. I specialise in building and fixing AI/ML systems for healthcare, including vector databases, RAG pipelines, and clinical NLP. If you need help with your project or think I can add value to your organisation, feel free to reach out — I'd love to connect.

📧 rtmalikian@gmail.com
🔗 GitHub: https://github.com/rtmalikian
🔗 LinkedIn: http://www.linkedin.com/in/raphael-t-malikian-mbbs-bsc-hons-71075436a

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Disclosure: This code was developed with assistance from DeepSeek v4 Pro (DeepSeek) via Hermes Agent (Nous Research). All changes were reviewed, tested against the actual codebase, and verified for correctness.

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

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