Class: OCI8::BindType::String

Inherits:
Object
  • Object
show all
Defined in:
lib/oci8/bindtype.rb

Direct Known Subclasses

Long

Constant Summary collapse

@@minimum_bind_length =

1333 <= ceil(4000 / 3). 4000 is max size of char. 3 is NLS ratio of UTF-8.

1333

Class Method Summary collapse

Class Method Details

.create(con, val, param, max_array_size) ⇒ Object 



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# File 'lib/oci8/bindtype.rb', line 105

def self.create(con, val, param, max_array_size)
  case param
  when Hash
    if param[:length]
      # If length is passed explicitly, use it.
      length = param[:length]
    elsif val.is_a? String or (val.respond_to? :to_str and val = val.to_str)
      if OCI8.respond_to? :encoding and OCI8.encoding != val.encoding
        # If the string encoding is different with NLS_LANG character set,
        # convert it to get the length.
        val = val.encode(OCI8.encoding)
      end
      if val.respond_to? :bytesize
        # ruby 1.8.7 or upper
        length = val.bytesize
      else
        # ruby 1.8.6 or lower
        length = val.size
      end
    end
    # use the default value when :nchar is not set explicitly.
    nchar = OCI8.properties[:bind_string_as_nchar] unless param.has_key?(:nchar)
  when OCI8::Metadata::Base
    case param.data_type
    when :char, :varchar2
      length = param.data_size
      # character size may become large on character set conversion.
      # The length of a Japanese half-width kana is one in Shift_JIS,
      # two in EUC-JP, three in UTF-8.
      length *= 3 unless param.char_used?
      nchar = (param.charset_form == :nchar)
    when :raw
      # HEX needs twice space.
      length = param.data_size * 2
    end
  end
  length = @@minimum_bind_length if length.nil? or length < @@minimum_bind_length
  if nchar
    OCI8::BindType::NCHAR.new(con, val, length, max_array_size)
  else
    OCI8::BindType::CHAR.new(con, val, length, max_array_size)
  end
end

.minimum_bind_length ⇒ Object 



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# File 'lib/oci8/bindtype.rb', line 97

def self.minimum_bind_length
  @@minimum_bind_length
end

.minimum_bind_length=(val) ⇒ Object 



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# File 'lib/oci8/bindtype.rb', line 101

def self.minimum_bind_length=(val)
  @@minimum_bind_length = val
end