class Mysql::Protocol::ExecutePacket

Execute packet

Public Class Methods

null_bitmap(values) click to toggle source

make null bitmap

If values is [1, nil, 2, 3, nil] then returns “x12”(0b10010).

# File lib/mysql/protocol.rb, line 727
def self.null_bitmap(values)
  bitmap = values.enum_for(:each_slice,8).map do |vals|
    vals.reverse.inject(0){|b, v|(b << 1 | (v ? 0 : 1))}
  end
  return bitmap.pack("C*")
end
serialize(statement_id, cursor_type, values) click to toggle source
# File lib/mysql/protocol.rb, line 713
def self.serialize(statement_id, cursor_type, values)
  nbm = null_bitmap values
  netvalues = ""
  types = values.map do |v|
    t, n = Protocol.value2net v
    netvalues.concat n if v
    t
  end
  [Mysql::COM_STMT_EXECUTE, statement_id, cursor_type, 1, nbm, 1, types.pack("v*"), netvalues].pack("CVCVa*Ca*a*")
end