Class: Myreplicator::ImportSql

Inherits:
Object
  • Object
show all
Defined in:
lib/loader/import_sql.rb

Class Method Summary collapse

Class Method Details

.build_load_data_infile(options) ⇒ Object 



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# File 'lib/loader/import_sql.rb', line 16

def build_load_data_infile options
  options.reverse_merge!(:replace => true,
                         :fields_terminated_by => "\\t",
                         :lines_terminated_by => "\\n"
                         )
                         

  handle = options[:replace] ? 'REPLACE' : 'IGNORE' 
  
  sql =  "LOAD DATA LOCAL INFILE '#{options[:filepath]}' #{handle} "
  sql += "INTO TABLE #{options[:db]}.#{options[:table_name]} "
  
  if options.include?(:character_set)
    sql << " CHARACTER SET #{options[:character_set]}"
  end
  
  if options.include?(:fields_terminated_by) or options.include?(:enclosed_by) or options.include?(:escaped_by)
    sql << " FIELDS"
  end
  if options.include?(:fields_terminated_by)
    sql << " TERMINATED BY '#{options[:fields_terminated_by]}'"
  end
  if options.include?(:enclosed_by)
    sql << " ENCLOSED BY '#{options[:enclosed_by]}'"
  end
  if options.include?(:escaped_by)
    sql << " ESCAPED BY '#{options[:escaped_by]}'"
  end
  
  if options.include?(:starting_by) or options.include?(:lines_terminated_by)
    sql << " LINES"
  end
  if options.include?(:starting_by) 
    sql << " STARTING BY '#{options[:starting_by]}'"
  end
  if options.include?(:lines_terminated_by)
    sql << " TERMINATED BY '#{options[:lines_terminated_by]}'"
  end

  if options.include?(:ignore)
    sql << " IGNORE #{options[:ignore]} LINES"
  end
  
  if options.include?(:fields) and !options[:fields].empty?
    sql << "( #{options[:fields].join(', ')} )"
  end

  return sql
end

.initial_load(*args) ⇒ Object 



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# File 'lib/loader/import_sql.rb', line 66

def initial_load *args
  options = args.extract_options!

  cmd = mysql_cmd(options[:db])       
  cmd += " #{options[:db]} "
  cmd += " < #{options[:filepath]} "
  
  return cmd
end

.load_data_infile(*args) ⇒ Object 



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# File 'lib/loader/import_sql.rb', line 5

def load_data_infile *args
  options = args.extract_options!
  sql = build_load_data_infile options

  cmd = mysql_cmd(options[:db])
  cmd += " --local_infile=1 " # Used for mysql versions that do not support -e and LDI
  cmd += "-e \"#{sql}\" "

  return cmd
end

.mysql_cmd(db) ⇒ Object 



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# File 'lib/loader/import_sql.rb', line 76

def mysql_cmd db
  # Destination database host
  db_host = SqlCommands.db_configs(db).has_key?("host") ? SqlCommands.db_configs(db)["host"] : "127.0.0.1"
  
  cmd = Myreplicator.mysql
  cmd += " -u#{SqlCommands.db_configs(db)["username"]} -p#{SqlCommands.db_configs(db)["password"]} "
  cmd += " -h#{db_host} " 
  cmd += " -P#{SqlCommands.db_configs(db)["port"]} " if SqlCommands.db_configs(db)["port"]
  
  return cmd
end