Class: Ragnar::QueryProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/ragnar/query_processor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(db_path: Ragnar::DEFAULT_DB_PATH) ⇒ QueryProcessor

Returns a new instance of QueryProcessor.



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# File 'lib/ragnar/query_processor.rb', line 10

def initialize(db_path: Ragnar::DEFAULT_DB_PATH)
  @database = Database.new(db_path)
  @embedder = Embedder.new
  @llm_manager = LLMManager.instance
  @umap_service = UmapTransformService.instance
  @rewriter = QueryRewriter.new(llm_manager: @llm_manager)
  @reranker = nil # Will initialize when needed
end

Instance Attribute Details

#database ⇒ Object (readonly)

Returns the value of attribute database.



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# File 'lib/ragnar/query_processor.rb', line 8

def database
  @database
end

#embedder ⇒ Object (readonly)

Returns the value of attribute embedder.



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# File 'lib/ragnar/query_processor.rb', line 8

def embedder
  @embedder
end

#reranker ⇒ Object (readonly)

Returns the value of attribute reranker.



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# File 'lib/ragnar/query_processor.rb', line 8

def reranker
  @reranker
end

#rewriter ⇒ Object (readonly)

Returns the value of attribute rewriter.



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# File 'lib/ragnar/query_processor.rb', line 8

def rewriter
  @rewriter
end

Instance Method Details

#query(user_query, top_k: 3, verbose: false, enable_rewriting: true, enable_reranking: false) ⇒ Object 



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# File 'lib/ragnar/query_processor.rb', line 19

def query(user_query, top_k: 3, verbose: false, enable_rewriting: true, enable_reranking: false)
  puts "Processing query: #{user_query}" if verbose
  
  # Step 1: Rewrite and analyze the query (if enabled)
  if enable_rewriting
    puts "\n#{'-'*60}" if verbose
    puts "STEP 1: Query Analysis & Rewriting" if verbose
    puts "-"*60 if verbose
    
    rewritten = @rewriter.rewrite(user_query)

    # Always include the original query in sub-queries to ensure direct matches
    # are found regardless of how the rewriter reformulates
    sub_queries = rewritten['sub_queries'] || []
    unless sub_queries.include?(user_query)
      sub_queries.unshift(user_query)
    end
    rewritten['sub_queries'] = sub_queries

    if verbose
      puts "\nOriginal Query: #{user_query}"
      puts "\nRewritten Query Analysis:"
      puts "  Clarified Intent: #{rewritten['clarified_intent']}"
      puts "  Query Type: #{rewritten['query_type']}"
      puts "  Context Needed: #{rewritten['context_needed']}"
      puts "\nGenerated Sub-queries (#{rewritten['sub_queries'].length}):"
      rewritten['sub_queries'].each_with_index do |sq, idx|
        puts "  #{idx + 1}. #{sq}"
      end
      if rewritten['key_terms'] && !rewritten['key_terms'].empty?
        puts "\nKey Terms Identified:"
        puts "  #{rewritten['key_terms'].join(', ')}"
      end
    end
  else
    # Skip rewriting - use original query directly
    rewritten = {
      'clarified_intent' => user_query,
      'query_type' => 'direct',
      'context_needed' => 'general',
      'sub_queries' => [user_query],
      'key_terms' => []
    }
    
    if verbose
      puts "\n#{'-'*60}"
      puts "STEP 1: Query Analysis (Rewriting Disabled)"
      puts "-"*60
      puts "\nUsing original query directly"
    end
  end
  
  # Step 2: Retrieve candidates using RRF
  if verbose
    puts "\n#{'-'*60}"
    puts "STEP 2: Document Retrieval with RRF"
    puts "-"*60
  end
  
  candidates = retrieve_with_rrf(
    rewritten['sub_queries'],
    k: 20,
    verbose: verbose
  )
  
  if candidates.empty?
    return {
      query: user_query,
      clarified: rewritten['clarified_intent'],
      answer: "No relevant documents found in the database.",
      sources: []
    }
  end
  
  if verbose
    puts "\nRetrieval Summary:"
    puts "  Total candidates found: #{candidates.size}"
    puts "  Unique sources: #{candidates.map { |c| c[:file_path] }.uniq.size}"
  end
  
  # Step 3: Rerank candidates
  if verbose
    puts "\n#{'-'*60}"
    puts "STEP 3: Document Reranking"
    puts "-"*60
  end
  
  if enable_reranking
    reranked = rerank_documents(
      query: user_query,
      documents: candidates,
      top_k: top_k * 2
    )
  else
    # Use retrieval order (RRF scores) directly — often more reliable than
    # small cross-encoder rerankers on domain-specific corpora
    reranked = candidates
  end

  if verbose && reranked.any?
    puts "\nTop #{enable_reranking ? 'Reranked' : 'Retrieved'} Documents:"
    reranked[0..2].each_with_index do |doc, idx|
      full_text = (doc[:chunk_text] || doc[:text] || "").gsub(/\s+/, ' ')
      puts "  #{idx + 1}. [#{File.basename(doc[:file_path] || 'unknown')}]"
      puts "     Score: #{doc[:score]&.round(4) if doc[:score]}"
      puts "     Distance: #{doc[:distance]&.round(4) if doc[:distance]}"
      puts "     Full chunk (#{full_text.length} chars):"
      puts "     \"#{full_text}\""
      puts ""
    end
  end
  
  # Step 4: Prepare context with neighboring chunks
  if verbose
    puts "\n#{'-'*60}"
    puts "STEP 4: Context Preparation"
    puts "-"*60
  end
  
  context_docs = prepare_context(reranked[0...top_k], rewritten['context_needed'])
  
  if verbose
    puts "\nContext Documents Selected: #{context_docs.length}"
    puts "Context strategy: #{rewritten['context_needed']}"
  end
  
  # Step 5: Repack context for optimal LLM consumption
  if verbose
    puts "\n#{'-'*60}"
    puts "STEP 5: Context Repacking"
    puts "-"*60
  end
  
  repacked_context = ContextRepacker.repack(
    context_docs,
    rewritten['clarified_intent']
  )
  
  if verbose
    original_size = context_docs.sum { |d| (d[:chunk_text] || "").length }
    puts "\nContext Optimization:"
    puts "  Original size: #{original_size} chars"
    puts "  Repacked size: #{repacked_context.length} chars"
    puts "  Compression ratio: #{(100.0 * repacked_context.length / original_size).round(1)}%"
    puts "\nFull Repacked Context:"
    puts "-" * 40
    puts repacked_context
    puts "-" * 40
  end
  
  # Step 6: Generate response
  if verbose
    puts "\n#{'-'*60}"
    puts "STEP 6: Response Generation"
    puts "-"*60
  end
  response = generate_response(
    query: rewritten['clarified_intent'],
    repacked_context: repacked_context,
    query_type: rewritten['query_type']
  )
  
  if verbose
    puts "\nGenerated Response:"
    puts "-" * 40
    puts response
    puts "-" * 40
  end
  
  result = {
    query: user_query,
    clarified: rewritten['clarified_intent'],
    answer: response,
    sources: context_docs.map { |d|
      {
        source_file: d[:file_path] || d[:source_file] || d["file_path"],
        chunk_index: d[:chunk_index] || d["chunk_index"]
      }
    }.reject { |s| s[:source_file].nil? },
    sub_queries: rewritten['sub_queries'],
    confidence: calculate_confidence(reranked[0...top_k])
  }
  
  if verbose
    puts "\n#{'-'*60}"
    puts "FINAL RESULTS"
    puts "-"*60
    puts "\nConfidence Score: #{result[:confidence]}%"
    puts "\nSources Used:"
    result[:sources].each_with_index do |source, idx|
      puts "  #{idx + 1}. #{source[:source_file]} (chunk #{source[:chunk_index]})"
    end
  end
  
  result
end