Module: RareMap::SchemaReader

Included in:
Mapper
Defined in:
lib/rare_map/schema_reader.rb

Overview

RareMap::SchemaReader dumps database schema by using ActiveRecord::SchemaDumper.

Instance Method Summary collapse

Instance Method Details

#read_schema(db_profile) ⇒ String

Returns the content of schema.rb which is created by ActiveRecord::SchemaDumper.

Returns:

  • the content of schema.rb which is created by ActiveRecord::SchemaDumper



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# File 'lib/rare_map/schema_reader.rb', line 11

def read_schema(db_profile)
  conn = db_profile.connection.map { |k, v| v.kind_of?(Integer) ? "'#{k}'=>#{v}" : "'#{k}'=>'#{v}'" }.join(', ')
  schema = if RUBY_PLATFORM == 'java'
    %x[jruby -e "require 'active_record'; require 'activerecord-jdbc-adapter'; ActiveRecord::Base.establish_connection(#{conn}); ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection);" 2>&1]
  else
    %x[ruby -e "require 'active_record'; ActiveRecord::Base.establish_connection(#{conn}); ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection);" 2>&1]
  end
  detect_errors schema
  schema
=begin
  schema = StringIO.new
  ActiveRecord::Base.establish_connection db_profile.connection
  ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, schema)
  schema.close
  schema.string
=end

end