flutter_gemma_rag_sqlite 1.0.1 
flutter_gemma_rag_sqlite: ^1.0.1 copied to clipboard
sashadenisov.devSQLite + HNSW on-device RAG vector store for flutter_gemma (native sqlite3 + web wa-sqlite). Opt-in package; implements flutter_gemma's VectorStoreRepository.
flutter_gemma_rag_sqlite #
SQLite + HNSW on-device RAG vector store for flutter_gemma.
Opt-in package implementing VectorStoreRepository:
- Native (Android/iOS/macOS/Linux/Windows):
SqliteVectorStore—sqlite3(dart:ffi) + HNSW. - Web:
WebSqliteVectorStore— wa-sqlite (WASM) + HNSW.
Usage #
import 'package:flutter/foundation.dart' show kIsWeb;
import 'package:flutter_gemma/flutter_gemma.dart';
import 'package:flutter_gemma_rag_sqlite/flutter_gemma_rag_sqlite.dart';
await FlutterGemma.initialize(
vectorStore: kIsWeb ? WebSqliteVectorStore() : SqliteVectorStore(),
);
Web setup #
On web the wa-sqlite engine is loaded from a <script> in your app's
web/index.html <head> (it exposes the global the package binds to). Pin a
release <tag> and compute a Subresource Integrity hash for that tag so a
CDN compromise cannot inject code:
<script type="module"
src="https://cdn.jsdelivr.net/gh/DenisovAV/flutter_gemma@<tag>/web/sqlite_vector_store.js"
integrity="sha384-<hash>"
crossorigin="anonymous"></script>
Compute the hash for the exact tag you pin (the browser rejects the script if
integritydoesn't match the served bytes, so don't ship a placeholder):curl -sL https://cdn.jsdelivr.net/gh/DenisovAV/flutter_gemma@<tag>/web/sqlite_vector_store.js | openssl dgst -sha384 -binary | openssl base64 -A
The worker (sqlite_vector_store_worker.js) is fetched by the main script from
the same CDN path — no separate <script> tag needed.
Native platforms need no setup — sqlite3 bundles its own native library.
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Metadata
SQLite + HNSW on-device RAG vector store for flutter_gemma (native sqlite3 + web wa-sqlite). Opt-in package; implements flutter_gemma's VectorStoreRepository.
Homepage
Repository (GitHub)
View/report issues
Topics
#rag #sqlite #vector-search #embeddings #web
License
MIT (license)
Dependencies
flutter, flutter_gemma, local_hnsw, sqlite3
