Module: Legion::Extensions::Apollo::Helpers::GraphQuery

Defined in:
lib/legion/extensions/apollo/helpers/graph_query.rb

Constant Summary collapse

SPREAD_FACTOR = 
0.6
DEFAULT_DEPTH = 
2
MIN_ACTIVATION = 
0.1

Class Method Summary collapse

Class Method Details

.build_semantic_search_sql(limit: default_query_limit, min_confidence: default_query_min_confidence, statuses: nil, tags: nil, domain: nil, requesting_principal_id: nil) ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 55

def build_semantic_search_sql(limit: default_query_limit, min_confidence: default_query_min_confidence,
                              statuses: nil, tags: nil, domain: nil,
                              requesting_principal_id: nil, **)
  conditions = ["e.confidence >= #{min_confidence}"]

  if statuses&.any?
    status_list = statuses.map { |s| "'#{s}'" }.join(', ')
    conditions << "e.status IN (#{status_list})"
  end

  if tags&.any?
    tag_list = tags.map { |t| "'#{t}'" }.join(', ')
    conditions << "e.tags && ARRAY[#{tag_list}]::text[]"
  end

  conditions << "e.knowledge_domain = '#{domain}'" if domain

  if requesting_principal_id
    pid = requesting_principal_id.to_i
    conditions << <<~SCOPE_SQL.strip
      (e.access_scope = 'global'
       OR (e.access_scope = 'private'
           AND (e.identity_principal_id = #{pid}
                OR e.identity_id IN (SELECT id FROM identities WHERE principal_id = #{pid})))
       OR (e.access_scope = 'team'
           AND EXISTS (
             SELECT 1 FROM identity_group_memberships igm1
             JOIN identity_group_memberships igm2 ON igm1.group_id = igm2.group_id
             WHERE igm1.principal_id = #{pid}
               AND igm2.principal_id = e.identity_principal_id
           )))
    SCOPE_SQL
  end

  where_clause = conditions.join(' AND ')

  <<~SQL
    SELECT e.id, e.content, e.content_type, e.confidence, e.tags, e.source_agent,
           e.access_count, e.created_at, e.knowledge_domain,
           (e.embedding <=> :embedding) AS distance
    FROM apollo_entries e
    WHERE #{where_clause}
      AND e.embedding IS NOT NULL
    ORDER BY e.embedding <=> :embedding
    LIMIT #{limit}
  SQL
end

.build_traversal_sql(depth: default_depth, relation_types: nil, min_activation: self.min_activation) ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 21

def build_traversal_sql(depth: default_depth, relation_types: nil, min_activation: self.min_activation, **)
  sf = spread_factor
  type_filter = if relation_types&.any?
                  types = relation_types.map { |t| "'#{t}'" }.join(', ')
                  "AND r.relation_type IN (#{types})"
                else
                  ''
                end

  <<~SQL
    WITH RECURSIVE graph AS (
      SELECT e.id, e.content, e.content_type, e.confidence, e.tags, e.source_agent,
             0 AS depth, 1.0::float AS activation
      FROM apollo_entries e
      WHERE e.id = :entry_id

      UNION ALL

      SELECT e.id, e.content, e.content_type, e.confidence, e.tags, e.source_agent,
             g.depth + 1,
             (g.activation * #{sf} * r.weight)::float
      FROM graph g
      JOIN apollo_relations r ON r.from_entry_id = g.id #{type_filter}
      JOIN apollo_entries e ON e.id = r.to_entry_id
      WHERE g.depth < #{depth}
        AND g.activation * #{sf} * r.weight > #{min_activation}
    )
    SELECT DISTINCT ON (id) id, content, content_type, confidence, tags, source_agent,
           depth, activation
    FROM graph
    ORDER BY id, activation DESC
  SQL
end

.default_depth ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 15

def default_depth  = Confidence.apollo_setting(:graph, :default_depth, default: DEFAULT_DEPTH)

.default_query_limit ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 18

def default_query_limit          = Confidence.apollo_setting(:query, :default_limit, default: 10)

.default_query_min_confidence ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 19

def default_query_min_confidence = Confidence.apollo_setting(:query, :default_min_confidence, default: 0.3)

.min_activation ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 16

def min_activation = Confidence.apollo_setting(:graph, :min_activation, default: MIN_ACTIVATION)

.spread_factor ⇒ Object 



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# File 'lib/legion/extensions/apollo/helpers/graph_query.rb', line 14

def spread_factor  = Confidence.apollo_setting(:graph, :spread_factor, default: SPREAD_FACTOR)