Class: RailsAiContext::Introspectors::SchemaIntrospector

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_ai_context/introspectors/schema_introspector.rb

Overview

Extracts database schema information including tables, columns, indexes, and foreign keys from the Rails application.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ SchemaIntrospector

Returns a new instance of SchemaIntrospector.



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# File 'lib/rails_ai_context/introspectors/schema_introspector.rb', line 10

def initialize(app)
  @app = app
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/rails_ai_context/introspectors/schema_introspector.rb', line 8

def app
  @app
end

Instance Method Details

#call ⇒ Hash

Returns database schema context.

Returns:

  • (Hash) —

    database schema context



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# File 'lib/rails_ai_context/introspectors/schema_introspector.rb', line 15

def call
  return static_schema_parse unless active_record_connected?
  return static_schema_parse if table_names.empty?

  schema_content = File.exist?(schema_file_path) ? (RailsAiContext::SafeFile.read(schema_file_path, max_size: RailsAiContext.configuration.max_schema_file_size) || "") : ""

  check_constraints = []
  enum_types = []
  if File.exist?(schema_file_path) && defined?(Listeners::SchemaDslListener)
    ast_results = SourceIntrospector.walk(schema_file_path, { schema: -> { Listeners::SchemaDslListener.new } })
    schema_results = ast_results[:schema]

    current_table = nil
    schema_results.sort_by { |r| r[:location] }.each do |entry|
      case entry[:type]
      when :create_table then current_table = entry[:table]
      when :check_constraint
        check_constraints << { table: current_table, expression: entry[:expression] } if current_table
      when :add_check_constraint
        check_constraints << { table: entry[:table], expression: entry[:expression] }
      when :enum
        enum_types << { name: entry[:name], values: entry[:values] }
      end
    end
  end

  {
    adapter: adapter_name,
    tables: extract_tables,
    total_tables: table_names.size,
    schema_version: current_schema_version,
    check_constraints: check_constraints,
    enum_types: enum_types,
    generated_columns: parse_generated_columns(schema_content)
  }
end