Class: ActiveRecordGraphExtractor::RelationshipAnalyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/activerecord_graph_extractor/relationship_analyzer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = ActiveRecordGraphExtractor.configuration) ⇒ RelationshipAnalyzer

Returns a new instance of RelationshipAnalyzer.



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 7

def initialize(config = ActiveRecordGraphExtractor.configuration)
  @config = config
  @visited_models = Set.new
  @circular_paths = []
  @primary_connection = ActiveRecord::Base.connection
end

Instance Attribute Details

#circular_paths ⇒ Object (readonly)

Returns the value of attribute circular_paths.



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 5

def circular_paths
  @circular_paths
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 5

def config
  @config
end

#visited_models ⇒ Object (readonly)

Returns the value of attribute visited_models.



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 5

def visited_models
  @visited_models
end

Instance Method Details

#analyze_model(model_class) ⇒ Object 



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 14

def analyze_model(model_class)
  # Validate that this is an ActiveRecord model
  unless model_class.respond_to?(:reflect_on_all_associations)
    raise ExtractionError, "#{model_class} is not an ActiveRecord model"
  end

  relationships = {}

  model_class.reflect_on_all_associations.each do |association|
    begin
      next if association.klass.nil?

      relationship_name = association.name.to_s
      next unless config.relationship_included?(relationship_name)

      # Check if the associated model uses the primary database
      associated_model = association.klass
      model_name = associated_model.name
      
      # Skip if model is excluded
      next unless config.model_included?(model_name)
      
      # Skip if the associated model doesn't use the primary database (if enabled)
      if config.skip_non_primary_database_models
        next unless uses_primary_database?(associated_model)
      end

      relationships[relationship_name] = {
        'type' => association.macro.to_s,
        'model_class' => associated_model,
        'model_name' => model_name,
        'foreign_key' => association.foreign_key,
        'polymorphic' => association.options[:polymorphic] || false,
        'optional' => association.options[:optional] || false
      }
    rescue NameError => e
      if config.skip_missing_models
        next
      else
        raise e
      end
    rescue StandardError => e
      # Skip associations that cause database connection errors
      if e.message.include?('Unknown database') || e.message.include?('database connection')
        next
      else
        raise e unless config.skip_missing_models
      end
    end
  end

  filter_relationships(relationships)
end

#analyze_models(model_classes) ⇒ Object 



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 68

def analyze_models(model_classes)
  # Validate input
  unless model_classes.is_a?(Array)
    raise ExtractionError, "Expected an array of model classes"
  end

  # Handle empty array
  return {} if model_classes.empty?

  # Validate each model class
  model_classes.each do |model_class|
    unless model_class.respond_to?(:reflect_on_all_associations)
      raise ExtractionError, "#{model_class} is not an ActiveRecord model"
    end
  end

  relationships = {}

  model_classes.each do |model_class|
    model_name = model_class.name
    relationships[model_name] = analyze_model(model_class)
  end

  relationships
end

#build_dependency_graph(models) ⇒ Object 



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 108

def build_dependency_graph(models)
  dependency_graph = {}

  models.each do |model_class|
    dependencies = []
    relationships = analyze_model(model_class)

    relationships.each do |name, info|
      if info['type'] == 'belongs_to' && !info['optional']
        dependencies << info['model_class'] unless dependencies.include?(info['model_class'])
      end
    end

    dependency_graph[model_class] = dependencies.uniq
  end

  dependency_graph
end

#circular_reference?(model_name, visited) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 127

def circular_reference?(model_name, visited)
  visited.include?(model_name)
end

#get_relationship_info(record, relationship_name) ⇒ Object 



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# File 'lib/activerecord_graph_extractor/relationship_analyzer.rb', line 94

def get_relationship_info(record, relationship_name)
  relationships = analyze_model(record.class)
  relationship = relationships[relationship_name.to_s]
  
  return nil unless relationship

  # Convert to symbols for consistency with expected API
  {
    model_class: relationship['model_class'],
    model_name: relationship['model_name'],
    type: relationship['type'].to_sym
  }
end