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RAGFlowChainR NEWS

All notable changes to RAGFlowChainR will be documented in this file.

Version 0.1.1 — 2025-04-24

CRAN compliance & stability

• Prevent segfaults on CRAN by disabling the experimental vss extension during CRAN checks (no more INSTALL vss; LOAD vss; in tests or create_vectorstore() when under _R_CHECK_PACKAGE_NAME_).
• Fallback to FLOAT[] column type when vss is unavailable, avoiding binary-extension errors on Fedora-clang.

API fixes & enhancements

• create_vectorstore()
  • Skip installing/loading vss under CRAN, but still load in interactive/developer sessions.
  • Always return a live DuckDB connection (no longer auto-disconnect internally).
• insert_vectors()
  • Fix single-column data-frame collapse by using df[i, , drop = FALSE].
  • Dynamically choose between array_value() (for VECTOR[…]) and list_value() (for FLOAT[]) constructors.
• build_vector_index()
  • Guard HNSW index creation: skip with a warning if the table uses FLOAT[] (no VECTOR[…] column).
• connect_vectorstore() / RAG chain code
  • Mirror the same safe vss-guard logic when connecting and building indexes in create_rag_chain().

DESCRIPTION & metadata

• Bump Version to 0.1.1.
• Require duckdb (>= 0.10.0) to ensure extension support.
• Require testthat (>= 3.0.0) and add Config/testthat/edition: 3.
• Clean up single quotes in Description (only around package/API names: DuckDB, Tavily, python).
• Expand acronyms: HNSW (Hierarchical Navigable Small World), large language model (LLM).

Testing improvements

• Suppress warnings in tests to achieve silent runs.
• Remove brittle ‘fts_main’ table assertions—only verify build_vector_index() completes without error.
• Use deterministic mock_embed and dummy_embed functions to avoid external API calls.
• Skip RAG-chain integration tests on CRAN and guard downloads of test-data DuckDB file.

Thanks to the CRAN team for the review and feedback!

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.