Class: SQLAnywhere::DataValue

Inherits:
FFI::Struct
  • Object
show all
Defined in:
lib/data_value.rb

Instance Method Summary collapse

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/data_value.rb', line 14

def inspect
  "<#{self.class} value: #{self.value}, buffer_size: #{self[:buffer_size]}, is_null: #{self.is_null?}, length: #{self.length}, type: #{self[:type]}, buffer: #{self[:buffer]}, length_pointer: #{self[:length]}>"
end

#is_null? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_value.rb', line 19

def is_null?
  return nil if self[:is_null].null?
  self[:is_null].read_uint == 1
end

#length ⇒ Object 



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# File 'lib/data_value.rb', line 24

def length
  return nil if self[:length].null?
  self[:length].read_uint
end

#value ⇒ Object 



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# File 'lib/data_value.rb', line 29

def value
  return nil if is_null?

  case self[:type]
  #when :invalid_type
  when :binary, :string
    self[:buffer].get_string(0, length)
  when :double
    self[:buffer].read_double
  when :val64 # 64 bit integer
    self[:buffer].read_long_long
  when :unsigned_val64 # 64 bit unsigned integer
    self[:buffer].read_ulong_long
  when :val32
    self[:buffer].read_int
  when :unsigned_val32
    self[:buffer].read_uint
  when :val16
    self[:buffer].read_short
  when :unsigned_val16
    self[:buffer].read_ushort
  when :val8
    self[:buffer].read_char
  when :unsigned_val8
    self[:buffer].read_uchar
  else
    raise "Type not yet implemented #{self[:type]}"
  end

end