Class: Dbwatcher::Services::DiagramAnalyzers::ModelAnalysis::DatasetBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/dbwatcher/services/diagram_analyzers/model_analysis/dataset_builder.rb

Overview

Service responsible for building datasets from model associations

This service handles the transformation of model association data into standardized Dataset format with entities and relationships.

Instance Method Summary collapse

Instance Method Details

#build_from_associations(raw_associations, models) ⇒ DiagramData::Dataset

Build complete dataset from associations and models



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# File 'lib/dbwatcher/services/diagram_analyzers/model_analysis/dataset_builder.rb', line 79

def build_from_associations(raw_associations, models)
  dataset = create_empty_dataset
  dataset.metadata.merge!({
                            total_relationships: raw_associations.count { |a| a[:target_model] },
                            total_models: models.length,
                            model_names: models.map(&:name)
                          })

  # Create entities from actual discovered models (no inference)
  create_entities_from_models(dataset, models)

  # Create relationships from association data
  create_relationships_from_associations(dataset, raw_associations)

  dataset
end

#create_entities_from_models(dataset, models) ⇒ void

This method returns an undefined value.

Create entities from discovered model classes



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# File 'lib/dbwatcher/services/diagram_analyzers/model_analysis/dataset_builder.rb', line 17

def create_entities_from_models(dataset, models)
  models.each do |model_class|
    attributes = extract_model_attributes(model_class)
    methods = extract_model_methods(model_class)

    entity = create_entity(
      id: model_class.table_name,
      name: model_class.name,
      type: "model",
      attributes: attributes,
      metadata: {
        table_name: model_class.table_name,
        model_class: model_class.name,
        methods: methods
      }
    )
    dataset.add_entity(entity)
  end
end

#create_relationships_from_associations(dataset, raw_data) ⇒ void

This method returns an undefined value.

Create relationships from association data



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# File 'lib/dbwatcher/services/diagram_analyzers/model_analysis/dataset_builder.rb', line 42

def create_relationships_from_associations(dataset, raw_data)
  raw_data.each do |association|
    next if association[:type] == "node_only" || !association[:target_model]

    source_id = association[:source_table]
    target_id = association[:target_table]

    # Skip if we don't have valid table IDs
    next unless source_id && target_id

    # Determine cardinality based on relationship type
    cardinality = determine_cardinality(association[:type])

    relationship = create_relationship({
                                         source_id: source_id,
                                         target_id: target_id,
                                         type: association[:type],
                                         label: association[:association_name],
                                         cardinality: cardinality,
                                         metadata: {
                                           association_name: association[:association_name],
                                           source_model: association[:source_model],
                                           target_model: association[:target_model],
                                           original_type: association[:type],
                                           self_referential: source_id == target_id
                                         }
                                       })

    dataset.add_relationship(relationship)
  end
end