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library-desk/src/services/hybrid_rag_service.py
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jpmschweitzerandClaude Opus 4.5 37f8e1819e
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feat: refactor volatile cache to vector storage with HybridRAG integration
- Migrate volatile backend from Redis to Qdrant for semantic search
- Add natural language conversion for structured data embedding
- Simplify API: /volatile/search, /volatile/store, /{namespace}/{key}
- Integrate volatile into HybridRAG with priority boost in RRF fusion
- Add POST /maintenance/cleanup/volatile for expiry purging
- Update tests for new Qdrant-based architecture (37/37 pass)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2025-12-24 20:03:37 +01:00

916 lines
33 KiB
Python

"""
HybridRAG service combining vector, graph, and web search.
6-Phase Pipeline:
0. Query Enhancement - Extract keywords/synonyms with LLM
1. Parallel Retrieval - Vector + Graph + Web search
2. RRF Fusion - Merge results with Reciprocal Rank Fusion
3. Enrichment - Add related dossiers via graph
4. LLM Re-ranking - Re-rank with configured Ollama model
5. Context Formatting - Format for LLM consumption
6. Persistence - Store for Librarian processing
"""
import asyncio
import time
import json
import uuid
from typing import List, Dict, Any, Optional
import logging
from src.services.vector_service import VectorService
from src.services.graph_service import GraphService
from src.services.volatile_service import VolatileCacheService
from src.clients.searxng_client import SearXNGClient
from src.clients.ollama_client import OllamaClient
from src.clients.content_extractor import ContentExtractor
from src.config import Settings
from src.models.hybrid_rag import (
HybridRAGConfig, HybridRAGRequest, HybridRAGResponse,
HybridRAGResult, TimingBreakdown, KeywordExtraction,
RelatedDossier
)
from src.core.multi_tenancy import get_neo4j_user_base_label, get_neo4j_user_label
logger = logging.getLogger(__name__)
class HybridRAGService:
"""
Service for HybridRAG multi-source search with fusion and re-ranking.
"""
def __init__(
self,
vector_service: VectorService,
graph_service: GraphService,
searxng_client: SearXNGClient,
ollama_client: OllamaClient,
content_extractor: ContentExtractor,
settings: Settings,
volatile_service: Optional[VolatileCacheService] = None
):
"""
Initialize HybridRAG service.
Args:
vector_service: Service for Qdrant vector search
graph_service: Service for Neo4j graph search
searxng_client: Client for web search
ollama_client: Client for LLM (keyword extraction, re-ranking)
content_extractor: Client for extracting full content from URLs
settings: Application settings
volatile_service: Service for volatile cache search (optional)
"""
self.vector = vector_service
self.graph = graph_service
self.searxng = searxng_client
self.ollama = ollama_client
self.content_extractor = content_extractor
self.settings = settings
self.volatile = volatile_service
self.reranker_model = settings.ollama_model
async def search(
self,
query: str,
user: str,
config: Optional[HybridRAGConfig] = None
) -> HybridRAGResponse:
"""
Execute HybridRAG search across all sources.
Args:
query: Search query
user: User identifier
config: Optional configuration override
Returns:
Complete search response with ranked results and timing
"""
start_time = time.time()
timing = {}
# Use default config if not provided
if not config:
config = HybridRAGConfig()
logger.info(f"HybridRAG search: '{query}' for user '{user}'")
# Phase 0: Query Enhancement
phase0_start = time.time()
keywords_data = await self._extract_keywords_and_synonyms(query)
timing["query_enhancement_ms"] = (time.time() - phase0_start) * 1000
# Phase 1: Parallel Retrieval
phase1_start = time.time()
raw_results = await self._retrieve_parallel(query, user, config, keywords_data)
timing["vector_ms"] = raw_results.get("timing", {}).get("vector_ms", 0)
timing["graph_ms"] = raw_results.get("timing", {}).get("graph_ms", 0)
timing["web_ms"] = raw_results.get("timing", {}).get("web_ms", 0)
timing["volatile_ms"] = raw_results.get("timing", {}).get("volatile_ms", 0)
# Phase 2: Three-Source RRF Fusion
phase2_start = time.time()
# Stage 1: Merge wiki sources (vector + graph) into single ranking
wiki_merged = self._merge_wiki_sources(
vector_results=raw_results.get("vector", []),
graph_results=raw_results.get("graph", []),
k=config.rrf_k
)
# Stage 2: Final RRF between wiki, volatile, and web
# Volatile gets priority boost (smaller k = higher contribution per rank)
fused_results = self._reciprocal_rank_fusion(
wiki_results=wiki_merged,
web_results=raw_results.get("web", []),
volatile_results=raw_results.get("volatile", []),
k=config.rrf_k
)
timing["fusion_ms"] = (time.time() - phase2_start) * 1000
# Phase 3: Enrichment
phase3_start = time.time()
if config.enable_enrichment:
enriched_results = await self._enrich_with_related_dossiers(fused_results, user)
else:
enriched_results = fused_results
timing["enrichment_ms"] = (time.time() - phase3_start) * 1000
# Phase 4: LLM Re-ranking
phase4_start = time.time()
if config.enable_reranking and len(enriched_results) > 1:
reranked_results = await self._rerank_with_llm(enriched_results[:20], query)
else:
reranked_results = enriched_results
timing["reranking_ms"] = (time.time() - phase4_start) * 1000
# Limit to final result count
final_results = reranked_results[:config.final_result_count]
# Update final ranks
for i, result in enumerate(final_results, start=1):
result["final_rank"] = i
# Convert to HybridRAGResult models
result_models = self._convert_to_result_models(final_results)
# Phase 5: Context Formatting
context = self._format_context_for_llm(result_models)
# Calculate source counts
source_counts = {}
for result in result_models:
for source in result.sources:
source_counts[source] = source_counts.get(source, 0) + 1
timing["total_ms"] = (time.time() - start_time) * 1000
# Phase 6: Persistence (async, non-blocking)
phase6_start = time.time()
search_id = await self._persist_search_for_librarian(
query=query,
user=user,
keywords_data=keywords_data,
raw_results=raw_results,
final_results=final_results,
timing=timing
)
timing["persistence_ms"] = (time.time() - phase6_start) * 1000
# Build response
return HybridRAGResponse(
query=query,
keywords=KeywordExtraction(**keywords_data),
results=result_models,
context=context,
source_counts=source_counts,
total_results=len(result_models),
timing=TimingBreakdown(**timing),
config_used=config,
search_id=search_id
)
async def _extract_keywords_and_synonyms(self, query: str) -> Dict[str, Any]:
"""
Phase 0: Extract keywords, entities, and synonyms using LLM.
Args:
query: Search query
Returns:
Dictionary with keywords, entities, synonyms, expansions
"""
prompt = f"""Extract search terms from this query.
Query: "{query}"
RULES:
- Extract ONLY keywords explicitly present or directly implied in the query
- Do NOT invent terms, concepts, or synonyms not clearly related
- Do NOT add general knowledge or associations
- Provide synonyms ONLY for technical terms with well-known alternatives
- Return valid JSON only, no commentary
Return format:
{{
"core_keywords": ["words", "from", "query"],
"synonyms": {{"term": ["direct", "alternatives"]}}
}}
JSON:"""
try:
response = await self.ollama.generate_text(
prompt=prompt,
model=self.reranker_model,
temperature=0.0 # Deterministic for consistent extraction
)
# Parse JSON response (handle potential extra text)
response_clean = response.strip()
# Try to extract JSON if wrapped in text
if '{' in response_clean:
json_start = response_clean.find('{')
json_end = response_clean.rfind('}') + 1
response_clean = response_clean[json_start:json_end]
keywords_data = json.loads(response_clean)
# Ensure all required fields exist
result = {
"core_keywords": keywords_data.get("core_keywords", []),
"entities": keywords_data.get("entities", []),
"synonyms": keywords_data.get("synonyms", {}),
"expansions": keywords_data.get("expansions", {})
}
logger.info(f"Extracted keywords: {result['core_keywords'][:5]}, synonyms: {len(result['synonyms'])} terms")
return result
except json.JSONDecodeError as e:
logger.warning(f"Failed to parse LLM keyword extraction: {e}, using fallback")
# Fallback to simple extraction
words = query.split()
return {
"core_keywords": words,
"entities": [],
"synonyms": {},
"expansions": {}
}
except Exception as e:
logger.error(f"Keyword extraction failed: {e}", exc_info=True)
return {
"core_keywords": query.split(),
"entities": [],
"synonyms": {},
"expansions": {}
}
async def _retrieve_parallel(
self,
query: str,
user: str,
config: HybridRAGConfig,
keywords_data: Dict[str, Any]
) -> Dict[str, List]:
"""
Phase 1: Retrieve results from all sources in parallel.
Args:
query: Search query
user: User identifier
config: Search configuration
keywords_data: Extracted keywords/synonyms
Returns:
Dictionary with results from each source and timing
"""
tasks = {}
timing = {}
# Vector search
if config.enable_vector:
async def vector_search():
start = time.time()
try:
response = await self.vector.search(
query=query,
user=user,
limit=config.vector_limit,
score_threshold=self.settings.vector_similarity_threshold
)
results = [
{
"page_id": r.page_id,
"title": r.page_title,
"content": r.content,
"path": r.page_path,
"score": r.score,
"source": "vector"
}
for r in response.results
]
return results, (time.time() - start) * 1000
except Exception as e:
logger.error(f"Vector search failed: {e}", exc_info=True)
return [], (time.time() - start) * 1000
tasks["vector"] = vector_search()
# Graph search
if config.enable_graph:
async def graph_search():
start = time.time()
try:
# Skip synonyms for graph search - only use core keywords
# Synonyms like "author" can match unrelated entities like "author2000"
graph_keywords = {
"core_keywords": keywords_data.get("core_keywords", []),
"entities": keywords_data.get("entities", []),
"synonyms": {}, # No synonyms for exact entity matching
"expansions": {}
}
results = await self.graph.search_documents(
query=query,
user=user,
limit=config.graph_limit,
keywords_data=graph_keywords
)
formatted = [
{
"page_id": r["page_id"],
"title": r["title"],
"content": "", # Graph doesn't return content
"path": r["path"],
"entity_matches": r.get("entity_matches", 0),
"matched_entities": r.get("matched_entities", []),
"source": "graph"
}
for r in results
]
return formatted, (time.time() - start) * 1000
except Exception as e:
logger.error(f"Graph search failed: {e}", exc_info=True)
return [], (time.time() - start) * 1000
tasks["graph"] = graph_search()
# Web search with content extraction
if config.enable_web:
async def web_search():
start = time.time()
try:
results = await self.searxng.search_general(
query=query,
limit=config.web_limit
)
# Extract full content from URLs using Trafilatura
urls = [r.get("url") for r in results if r.get("url")]
extraction_results = await self.content_extractor.extract_batch(urls)
# Map extracted content back to results by URL
url_to_content = {
ext.url: ext.content
for ext in extraction_results
if ext.success and ext.content
}
formatted = [
{
"url": r.get("url"),
"title": r.get("title", ""),
"content": url_to_content.get(r.get("url"), r.get("content", "")),
"snippet": r.get("content", ""), # Keep original snippet
"engine": r.get("engine", ""),
"source": "web"
}
for r in results
]
return formatted, (time.time() - start) * 1000
except Exception as e:
logger.error(f"Web search failed: {e}", exc_info=True)
return [], (time.time() - start) * 1000
tasks["web"] = web_search()
# Volatile cache search
if config.enable_volatile and self.volatile:
async def volatile_search():
start = time.time()
try:
results = await self.volatile.search(
user=user,
query=query,
limit=config.volatile_limit,
score_threshold=config.volatile_threshold
)
formatted = [
{
"key": r.key,
"namespace": r.namespace,
"title": f"{r.namespace}: {r.key}",
"content": r.data.get("text", "") if isinstance(r.data, dict) else str(r.data),
"raw_data": r.data,
"source_api": r.source,
"ttl_remaining": r.ttl_remaining,
"source": "volatile"
}
for r in results
]
return formatted, (time.time() - start) * 1000
except Exception as e:
logger.error(f"Volatile search failed: {e}", exc_info=True)
return [], (time.time() - start) * 1000
tasks["volatile"] = volatile_search()
# Execute all searches in parallel
results_dict = await asyncio.gather(*tasks.values())
# Combine results with timing
output = {"timing": {}}
for i, source in enumerate(tasks.keys()):
results, source_timing = results_dict[i]
output[source] = results
output["timing"][f"{source}_ms"] = source_timing
logger.info(
f"Parallel retrieval: vector={len(output.get('vector', []))}, "
f"graph={len(output.get('graph', []))}, web={len(output.get('web', []))}, "
f"volatile={len(output.get('volatile', []))}"
)
return output
def _merge_wiki_sources(
self,
vector_results: List[Dict],
graph_results: List[Dict],
k: int = 60
) -> List[Dict[str, Any]]:
"""
Stage 1: Merge vector and graph into single wiki ranking using RRF.
Both sources search the same wiki pool, so we combine them before
final RRF with web to avoid double-counting wiki pages.
Args:
vector_results: Results from vector search
graph_results: Results from graph search
k: RRF constant (default 60)
Returns:
Merged wiki results sorted by wiki RRF score
"""
wiki_scores = {}
# Process vector results
for rank, result in enumerate(vector_results, start=1):
page_id = result.get("page_id")
if not page_id:
continue
result_id = f"page_{page_id}"
if result_id not in wiki_scores:
wiki_scores[result_id] = {
"result": dict(result), # Copy to avoid mutation
"wiki_rrf_score": 0.0,
"found_by": []
}
wiki_scores[result_id]["wiki_rrf_score"] += 1 / (k + rank)
wiki_scores[result_id]["found_by"].append("vector")
# Process graph results
for rank, result in enumerate(graph_results, start=1):
page_id = result.get("page_id")
if not page_id:
continue
result_id = f"page_{page_id}"
if result_id not in wiki_scores:
wiki_scores[result_id] = {
"result": dict(result),
"wiki_rrf_score": 0.0,
"found_by": []
}
wiki_scores[result_id]["wiki_rrf_score"] += 1 / (k + rank)
wiki_scores[result_id]["found_by"].append("graph")
# Add graph metadata to existing result
wiki_scores[result_id]["result"]["entity_matches"] = result.get("entity_matches")
wiki_scores[result_id]["result"]["matched_entities"] = result.get("matched_entities")
# Sort by wiki RRF score
sorted_wiki = sorted(
wiki_scores.values(),
key=lambda x: x["wiki_rrf_score"],
reverse=True
)
# Return merged results with wiki ranking
merged = []
for wiki_rank, item in enumerate(sorted_wiki, start=1):
merged.append({
**item["result"],
"wiki_rank": wiki_rank,
"wiki_rrf_score": item["wiki_rrf_score"],
"found_by": item["found_by"],
"source": "wiki"
})
logger.info(f"Wiki merge: {len(merged)} unique pages from vector+graph")
return merged
def _reciprocal_rank_fusion(
self,
wiki_results: List[Dict],
web_results: List[Dict],
volatile_results: Optional[List[Dict]] = None,
k: int = 60
) -> List[Dict[str, Any]]:
"""
Stage 2: Final RRF between wiki, volatile, and web.
Wiki results are pre-merged from vector+graph. Volatile results
get a priority boost (smaller effective k) since they represent
current, time-sensitive information.
Args:
wiki_results: Pre-merged wiki results from _merge_wiki_sources()
web_results: Results from web search
volatile_results: Results from volatile cache (fresh data)
k: RRF constant (default 60)
Returns:
Final merged and sorted results
"""
rrf_scores = {}
volatile_results = volatile_results or []
# Volatile results get priority boost (k/2 = stronger score per rank)
volatile_k = k // 2
for rank, result in enumerate(volatile_results, start=1):
key = result.get("key")
namespace = result.get("namespace", "unknown")
if not key:
continue
result_id = f"volatile_{namespace}_{key}"
rrf_scores[result_id] = {
"result": result,
"rrf_score": 1 / (volatile_k + rank), # Priority boost
"sources": ["volatile"],
"source_type": "volatile"
}
# Wiki results (single source, already merged)
for rank, result in enumerate(wiki_results, start=1):
page_id = result.get("page_id")
if not page_id:
continue
result_id = f"page_{page_id}"
rrf_scores[result_id] = {
"result": result,
"rrf_score": 1 / (k + rank),
"sources": result.get("found_by", ["wiki"]),
"source_type": "wiki"
}
# Web results (single source)
for rank, result in enumerate(web_results, start=1):
url = result.get("url")
if not url:
continue
result_id = f"url_{hash(url)}"
rrf_scores[result_id] = {
"result": result,
"rrf_score": 1 / (k + rank),
"sources": ["web"],
"source_type": "web"
}
# Sort by RRF score descending
sorted_results = sorted(
rrf_scores.values(),
key=lambda x: x["rrf_score"],
reverse=True
)
volatile_count = len([r for r in sorted_results if r["source_type"] == "volatile"])
logger.info(f"Final RRF: {len(sorted_results)} results (wiki + volatile[{volatile_count}] + web)")
return sorted_results
async def _enrich_with_related_dossiers(
self,
results: List[Dict[str, Any]],
user: str
) -> List[Dict[str, Any]]:
"""
Phase 3: Enrich results with related documents via shared entities.
Args:
results: Fused results
user: User identifier
Returns:
Results with related_dossiers added
"""
for result in results:
result_data = result.get("result", {})
page_id = result_data.get("page_id")
if page_id:
try:
related_docs = await self.graph.get_related_documents(
page_id=page_id,
user=user,
limit=5
)
# Convert to RelatedDossier format
related_dossiers = []
for doc in related_docs:
for tag in doc.get("tags", [])[:3]: # Max 3 tags per doc
related_dossiers.append({
"page_id": doc["page_id"],
"title": doc["title"],
"path": doc["path"],
"tag": tag,
"shared_entities": doc["shared_entities"]
})
result["related_dossiers"] = related_dossiers[:5] # Limit to 5 total
except Exception as e:
logger.warning(f"Failed to get related docs for page {page_id}: {e}")
result["related_dossiers"] = []
else:
result["related_dossiers"] = []
return results
async def _rerank_with_llm(
self,
results: List[Dict[str, Any]],
query: str
) -> List[Dict[str, Any]]:
"""
Phase 4: Re-rank results using LLM for better relevance.
Args:
results: Results to re-rank (top 20)
query: Original search query
Returns:
Re-ranked results
"""
if len(results) <= 1:
return results
try:
# Build prompt with numbered results
docs_text = "\n".join([
f"{i+1}. {r['result'].get('title', 'Untitled')} - {r['result'].get('content', '')[:200]}..."
for i, r in enumerate(results)
])
prompt = f"""Rank these documents by relevance to the query.
Query: {query}
Documents:
{docs_text}
RULES:
- Rank ONLY by how well content answers the query
- Do NOT consider document length, formatting, or style
- Do NOT add explanation or commentary
- Return ONLY comma-separated numbers, most relevant first
Example output: 3,1,5,2,4
Ranking:"""
response = await self.ollama.generate_text(
prompt=prompt,
model=self.reranker_model,
temperature=0.0 # Deterministic for consistent rankings
)
# Parse response: "3,1,5,2,4" → [2, 0, 4, 1, 3] (0-indexed)
indices_str = response.strip().split('\n')[0] # Take first line
indices = [int(x.strip()) - 1 for x in indices_str.split(",") if x.strip().isdigit()]
# Reorder results according to LLM ranking
reranked = []
for idx in indices:
if 0 <= idx < len(results):
reranked.append(results[idx])
# Add any results that weren't in the LLM response
for i, result in enumerate(results):
if i not in indices and result not in reranked:
reranked.append(result)
logger.info(f"LLM re-ranking: reordered {len(reranked)} results")
return reranked
except Exception as e:
logger.warning(f"LLM re-ranking failed: {e}, using RRF order")
return results # Fallback to RRF order
def _format_context_for_llm(self, results: List[HybridRAGResult]) -> str:
"""
Phase 5: Format results into context for LLM consumption.
Args:
results: Ranked results
Returns:
Formatted context string
"""
context_parts = []
for i, result in enumerate(results[:10], start=1):
# Source indicator
source_tag = f"[{result.source_type.upper()}]"
# Related dossiers if available
related = ""
if result.related_dossiers:
tags = ", ".join([d.tag for d in result.related_dossiers[:3]])
related = f"\n Related research: {tags}"
# Build context entry
content_preview = result.content[:300] if result.content else "(no content)"
context_parts.append(
f"{i}. {source_tag} {result.title}\n"
f" {content_preview}...{related}"
)
return "\n\n".join(context_parts)
async def _persist_search_for_librarian(
self,
query: str,
user: str,
keywords_data: Dict[str, Any],
raw_results: Dict[str, List],
final_results: List[Dict[str, Any]],
timing: Dict[str, float]
) -> Optional[str]:
"""
Phase 6: Store search query and results for Librarian processing.
Creates SearchQuery node in Neo4j with relationships to found documents
and web results for offline knowledge consolidation.
Args:
query: Search query
user: User identifier
keywords_data: Extracted keywords/synonyms
raw_results: Results from each source
final_results: Final ranked results
timing: Performance timing
Returns:
Search ID for tracking
"""
try:
user_base_label = get_neo4j_user_base_label(user)
search_id = str(uuid.uuid4())
# Create SearchQuery node
create_query = f"""
CREATE (sq:{user_base_label}_SearchQuery:SearchQuery {{
id: $search_id,
query: $query,
user: $user,
timestamp: datetime(),
processed: false,
total_results: $total_results,
vector_count: $vector_count,
graph_count: $graph_count,
web_count: $web_count,
keywords: $keywords,
synonyms: $synonyms,
timing_ms: $timing_ms
}})
RETURN sq.id as id
"""
result = await self.graph.neo4j.execute_query(create_query, {
"search_id": search_id,
"query": query,
"user": user,
"total_results": len(final_results),
"vector_count": len(raw_results.get("vector", [])),
"graph_count": len(raw_results.get("graph", [])),
"web_count": len(raw_results.get("web", [])),
"keywords": keywords_data.get("core_keywords", []),
"synonyms": json.dumps(keywords_data.get("synonyms", {})),
"timing_ms": timing.get("total_ms", 0)
})
# Link to found wiki documents (top 20)
for rank, result_data in enumerate(final_results[:20], start=1):
result = result_data.get("result", {})
page_id = result.get("page_id")
if page_id:
link_doc_query = f"""
MATCH (sq:{user_base_label}_SearchQuery:SearchQuery {{id: $search_id}})
MATCH (d:Document {{page_id: $page_id}})
MERGE (sq)-[f:FOUND]->(d)
SET f.source = $source,
f.rank = $rank,
f.rrf_score = $rrf_score,
f.final_rank = $final_rank
"""
await self.graph.neo4j.execute_query(link_doc_query, {
"search_id": search_id,
"page_id": page_id,
"source": result_data.get("source_type", "unknown"),
"rank": rank,
"rrf_score": result_data.get("rrf_score", 0),
"final_rank": result_data.get("final_rank", rank)
})
# Store web results as WebResult nodes (top 10)
web_results = [r for r in final_results[:10] if r.get("result", {}).get("url")]
for rank, result_data in enumerate(web_results, start=1):
result = result_data.get("result", {})
create_web_query = f"""
MATCH (sq:{user_base_label}_SearchQuery:SearchQuery {{id: $search_id}})
CREATE (wr:{user_base_label}_WebResult:WebResult {{
url: $url,
title: $title,
content: $content,
search_id: $search_id,
timestamp: datetime()
}})
CREATE (sq)-[:FOUND {{
source: "web",
rank: $rank,
rrf_score: $rrf_score
}}]->(wr)
"""
await self.graph.neo4j.execute_query(create_web_query, {
"search_id": search_id,
"url": result.get("url"),
"title": result.get("title", ""),
"content": result.get("content", "")[:1000], # Truncate
"rank": rank,
"rrf_score": result_data.get("rrf_score", 0)
})
logger.info(f"Persisted search {search_id} for Librarian processing")
return search_id
except Exception as e:
logger.error(f"Failed to persist search for Librarian: {e}", exc_info=True)
return None
def _convert_to_result_models(self, results: List[Dict[str, Any]]) -> List[HybridRAGResult]:
"""
Convert internal result format to HybridRAGResult models.
Args:
results: Internal result dictionaries
Returns:
List of HybridRAGResult models
"""
models = []
for result_data in results:
result = result_data.get("result", {})
related_dossiers = result_data.get("related_dossiers", [])
models.append(HybridRAGResult(
source_type=result_data.get("source_type", "unknown"),
title=result.get("title", "Untitled"),
content=result.get("content", ""),
url=result.get("url"),
page_id=result.get("page_id"),
page_path=result.get("path"),
rrf_score=result_data.get("rrf_score", 0),
final_rank=result_data.get("final_rank", 0),
sources=result_data.get("sources", []),
related_dossiers=[RelatedDossier(**d) for d in related_dossiers],
metadata={
"entity_matches": result.get("entity_matches"),
"matched_entities": result.get("matched_entities"),
"engine": result.get("engine")
}
))
return models