surrealdb-xberg 1.0.5

Xberg-to-SurrealDB connector for document ingestion pipelines — schema management, content deduplication, chunk storage, and index configuration

surrealdb-xberg

Ingest documents into SurrealDB with Xberg extraction. The connector manages the schema, deduplicates by content hash, and stores the full Xberg output — content, metadata, keywords, named entities, tables, summary, detected languages, and quality score — plus optionally chunks with embeddings for vector and hybrid search.

Install

pip install surrealdb-xberg

Requires Python 3.10+ and a running SurrealDB instance:

docker run --rm -p 8000:8000 surrealdb/surrealdb:latest start --user root --pass root

Choose a class

Class	Stores	Indexes	Use for
DocumentConnector	Whole documents	BM25 on documents	Keyword search over documents
DocumentPipeline	Documents + chunks	BM25 + HNSW	Semantic / hybrid search
DocumentPipeline(embed=False)	Documents + chunks	BM25 on chunks	Keyword search over chunks

Both are fully async and accept any async SurrealDB connection, session, or transaction.

Quick start

import asyncio

from surrealdb import AsyncSurreal
from surrealdb_xberg import DocumentPipeline


async def main() -> None:
    async with AsyncSurreal("ws://localhost:8000") as db:
        await db.signin({"username": "root", "password": "root"})
        await db.use("app", "docs")

        pipeline = DocumentPipeline(db=db, embed=True, embedding_model="balanced")
        await pipeline.setup_schema()  # probes the embedding dimension, then creates tables + indexes

        # One extract_batch call for the whole directory, then batched idempotent inserts.
        await pipeline.ingest_directory("./papers", glob="**/*.pdf")

        # Vector search over chunks.
        embedding = await pipeline.embed_query("retrieval augmented generation")
        hits = await pipeline.client.query(
            f"SELECT document.source AS source, content, vector::distance::knn() AS distance "
            f"FROM {pipeline.chunk_table} WHERE embedding <|5,COSINE|> $embedding ORDER BY distance",
            {"embedding": embedding},
        )
        print(hits)


asyncio.run(main())

Ingestion

Every entry point extracts through Xberg, then stores idempotently (deterministic record IDs plus INSERT IGNORE, so re-ingesting the same content is a no-op):

await pipeline.ingest_file("report.pdf")
await pipeline.ingest_files(["a.pdf", "b.docx"])       # single batched extract_batch
await pipeline.ingest_directory("./corpus", glob="**/*.pdf")
await pipeline.ingest_bytes(data=raw, mime_type="application/pdf", source="upload://1")

Pass an Xberg ExtractionConfig to control extraction — OCR, keywords, NER, summarization, chunking:

from xberg import ExtractionConfig, NerConfig, SummarizationConfig

config = ExtractionConfig(ner=NerConfig(), summarization=SummarizationConfig())
connector = DocumentConnector(db=db, config=config)

DocumentPipeline injects its embedding config into whatever ChunkingConfig you provide (or a default one), preserving your max_characters/overlap/preset.

Stored fields

Each document row carries source, content, mime_type, title, authors, created_at, metadata, quality_score, content_hash, detected_languages, keywords, summary, entities (NER: category, text, start, end, confidence), and tables (markdown, page_number, cells). DocumentPipeline additionally writes a chunks table linked back to the parent document via a record link, each chunk holding its content, chunk_index, page/byte offsets, and (when enabled) its embedding.

Notes

• SurrealDB v3 enforces HNSW dimensions server-globally. Use one embedding model per server, or separate instances; a dimension conflict raises DimensionMismatchError.
• Ingestion failures surface as IngestionError (or DimensionMismatchError), whether SurrealDB raises a ServerError or swallows the error into an INSERT IGNORE result.

See examples/ for BM25, vector, hybrid (RRF) search, chunk traversal, and incremental ingestion. Licensed under MIT.