Class: RubyMaat::Analysis::Churn::ByEntity

Inherits:
BaseAnalysis show all
Defined in:
lib/ruby_maat/analysis/churn.rb

Overview

Entity churn analysis - churn metrics per entity

Instance Method Summary collapse

Instance Method Details

#analyze(dataset, options = {}) ⇒ Object 



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# File 'lib/ruby_maat/analysis/churn.rb', line 89

def analyze(dataset, options = {})
  min_revs = options[:min_revs] || 5

  # Group by entity and sum churn metrics
  results = {}

  dataset.to_df.each_row do |row|
    entity = row["entity"]
    added = row["loc_added"] || 0
    deleted = row["loc_deleted"] || 0
    revision = row["revision"]

    results[entity] ||= {entity: entity, added: 0, deleted: 0, revisions: Set.new}
    results[entity][:added] += added
    results[entity][:deleted] += deleted
    results[entity][:revisions] << revision
  end

  # Filter by minimum revisions and format results
  filtered_results = results.values.filter_map do |result|
    next if result[:revisions].size < min_revs

    {
      entity: result[:entity],
      added: result[:added],
      deleted: result[:deleted],
      commits: result[:revisions].size
    }
  end

  # Sort by total churn descending
  filtered_results.sort_by! { |r| -(r[:added] + r[:deleted]) }

  to_csv_data(filtered_results, i[entity added deleted commits])
end