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Class: ActiveRecord::Tasks::SQLiteDatabaseTasks

Do not use. This class is for internal use only.
Relationships & Source Files
Inherits: Object
Defined in: activerecord/lib/active_record/tasks/sqlite_database_tasks.rb

Class Attribute Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(db_config, root = ActiveRecord::Tasks::DatabaseTasks.root) ⇒ SQLiteDatabaseTasks

[ GitHub ] 

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 10



def initialize(db_config, root = ActiveRecord::Tasks::DatabaseTasks.root)
  @db_config = db_config
  @root = root
end


  







Class Attribute Details



  

    .using_database_configurations?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 6



def self.using_database_configurations?
  true
end


  







Instance Attribute Details



  

    #db_config   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 66



attr_reader :db_config, :root


  








  

    #root   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 66



attr_reader :db_config, :root


  







Instance Method Details



  

    #charset  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 40



def charset
  connection.encoding
end


  








  

    #connection   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 68



def connection
  ActiveRecord::Base.lease_connection
end


  








  

    #create  
  



  

    
  





  
Raises:





  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 15



def create
  raise DatabaseAlreadyExists if File.exist?(db_config.database)

  establish_connection
  connection
end


  








  

    #drop  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 22



def drop
  db_path = db_config.database
  file = File.absolute_path?(db_path) ? db_path : File.join(root, db_path)
  FileUtils.rm(file)
  FileUtils.rm_f(["#{file}-shm", "#{file}-wal"])
rescue Errno::ENOENT => error
  raise NoDatabaseError.new(error.message)
end


  








  

    #establish_connection(config = db_config)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 72



def establish_connection(config = db_config)
  ActiveRecord::Base.establish_connection(config)
  connection.connect!
end


  








  

    #purge  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 31



def purge
  connection.disconnect!
  drop
rescue NoDatabaseError
ensure
  create
  connection.reconnect!
end


  








  

    #run_cmd(cmd, args, out)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 77



def run_cmd(cmd, args, out)
  fail run_cmd_error(cmd, args) unless Kernel.system(cmd, *args, out: out)
end


  








  

    #run_cmd_error(cmd, args)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 81



def run_cmd_error(cmd, args)
  msg = +"failed to execute:\n"
  msg << "#{cmd} #{args.join(' ')}\n\n"
  msg << "Please check the output above for any errors and make sure that `#{cmd}` is installed in your PATH and has proper permissions.\n\n"
  msg
end


  








  

    #structure_dump(filename, extra_flags)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 44



def structure_dump(filename, extra_flags)
  args = []
  args.concat(Array(extra_flags)) if extra_flags
  args << db_config.database

  ignore_tables = ActiveRecord::SchemaDumper.ignore_tables
  if ignore_tables.any?
    ignore_tables = connection.data_sources.select { |table| ignore_tables.any? { |pattern| pattern === table } }
    condition = ignore_tables.map { |table| connection.quote(table) }.join(", ")
    args << "SELECT sql || ';' FROM sqlite_master WHERE tbl_name NOT IN (#{condition}) ORDER BY tbl_name, type DESC, name"
  else
    args << ".schema --nosys"
  end
  run_cmd("sqlite3", args, filename)
end


  








  

    #structure_load(filename, extra_flags)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 60



def structure_load(filename, extra_flags)
  flags = extra_flags.join(" ") if extra_flags
  `sqlite3 #{flags} #{db_config.database} < "#{filename}"`
end