Class: BSON::Binary
Overview
Represents binary data.
Constant Summary collapse
- BSON_TYPE =
A binary is type 0x05 in the BSON spec.
::String.new(5.chr, encoding: BINARY).freeze
- SUBTYPES =
Note:
subtype 6 (ciphertext) is used for the Client-Side Encryption feature. Data represented by this subtype is often encrypted, but may also be plaintext. All instances of this subtype necessary for Client-Side Encryption will be created internally by the Ruby driver. An application should not create new BSON::Binary objects of this subtype.
The mappings of subtypes to their single byte identifiers.
{ generic: 0.chr, function: 1.chr, old: 2.chr, uuid_old: 3.chr, uuid: 4.chr, md5: 5.chr, ciphertext: 6.chr, column: 7.chr, user: 128.chr, }.freeze
- USER_SUBTYPE =
The starting point of the user-defined subtype range.
0x80
- TYPES =
The mappings of single byte subtypes to their symbol counterparts.
SUBTYPES.invert.freeze
Instance Attribute Summary collapse
-
#data ⇒ String
readonly
The string is always stored in BINARY encoding.
-
#raw_type ⇒ String
readonly
The raw type value, as an encoded integer.
-
#type ⇒ Symbol
readonly
The binary type.
Class Method Summary collapse
-
.from_bson(buffer, **_options) ⇒ Binary
Deserialize the binary data from BSON.
-
.from_csharp_legacy_uuid(uuid_binary) ⇒ BSON::Binary
private
Constructs a new binary object from a csharp legacy-format binary UUID representation.
-
.from_java_legacy_uuid(uuid_binary) ⇒ BSON::Binary
private
Constructs a new binary object from a java legacy-format binary UUID representation.
-
.from_python_legacy_uuid(uuid_binary) ⇒ BSON::Binary
private
Constructs a new binary object from a python legacy-format binary UUID representation.
-
.from_standard_uuid(uuid_binary) ⇒ BSON::Binary
private
Constructs a new binary object from a standard-format binary UUID representation.
-
.from_uuid(uuid, representation = nil) ⇒ Binary
Creates a BSON::Binary from a string representation of a UUID.
Instance Method Summary collapse
-
#==(other) ⇒ true, false
(also: #eql?)
Determine if this binary object is equal to another object.
-
#as_extended_json(**options) ⇒ Hash
Converts this object to a representation directly serializable to Extended JSON (github.com/mongodb/specifications/blob/master/source/extended-json.rst).
-
#as_json(*_args) ⇒ Hash
Return a representation of the object for use in application-level JSON serialization.
-
#hash ⇒ Fixnum
Generates a Fixnum hash value for this object.
-
#initialize(data = '', type = :generic) ⇒ Binary
constructor
Instantiate the new binary object.
-
#inspect ⇒ String
Get a nice string for use with object inspection.
-
#to_bson(buffer = ByteBuffer.new) ⇒ BSON::ByteBuffer
Encode the binary type.
-
#to_uuid(representation = nil) ⇒ String
Returns a string representation of the UUID stored in this Binary.
Methods included from JSON
Constructor Details
#initialize(data = '', type = :generic) ⇒ Binary
Instantiate the new binary object.
This method accepts a string in any encoding; however, if a string is of a non-BINARY encoding, the encoding is set to BINARY. This does not change the bytes of the string but it means that applications referencing the data of a Binary instance cannot assume it is in a non-binary encoding, even if the string given to the constructor was in such an encoding.
149 150 151 152 153 154 155 156 157 158 159 160 |
# File 'lib/bson/binary.rb', line 149 def initialize(data = '', type = :generic) @type = validate_type!(type) # The Binary class used to force encoding to BINARY when serializing to # BSON. Instead of doing that during serialization, perform this # operation during Binary construction to make it clear that once # the string is given to the Binary, the data is treated as a binary # string and not a text string in any encoding. data = data.dup.force_encoding('BINARY') unless data.encoding == Encoding.find('BINARY') @data = data end |
Instance Attribute Details
#data ⇒ String (readonly)
The string is always stored in BINARY encoding.
67 68 69 |
# File 'lib/bson/binary.rb', line 67 def data @data end |
#raw_type ⇒ String (readonly)
Returns The raw type value, as an encoded integer.
73 74 75 |
# File 'lib/bson/binary.rb', line 73 def raw_type @raw_type end |
#type ⇒ Symbol (readonly)
Returns The binary type.
70 71 72 |
# File 'lib/bson/binary.rb', line 70 def type @type end |
Class Method Details
.from_bson(buffer, **_options) ⇒ Binary
Deserialize the binary data from BSON.
246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 |
# File 'lib/bson/binary.rb', line 246 def self.from_bson(buffer, **) length = buffer.get_int32 type_byte = buffer.get_byte if type_byte.bytes.first < USER_SUBTYPE type = TYPES[type_byte] if type.nil? raise Error::UnsupportedBinarySubtype, "BSON data contains unsupported binary subtype #{'0x%02x' % type_byte.ord}" end else type = type_byte end length = buffer.get_int32 if type == :old data = buffer.get_bytes(length) new(data, type) end |
.from_csharp_legacy_uuid(uuid_binary) ⇒ BSON::Binary
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Constructs a new binary object from a csharp legacy-format binary UUID representation.
323 324 325 326 |
# File 'lib/bson/binary.rb', line 323 def self.from_csharp_legacy_uuid(uuid_binary) uuid_binary.sub!(/\A(.)(.)(.)(.)(.)(.)(.)(.)(.{8})\z/, '\4\3\2\1\6\5\8\7\9') new(uuid_binary, :uuid_old) end |
.from_java_legacy_uuid(uuid_binary) ⇒ BSON::Binary
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Constructs a new binary object from a java legacy-format binary UUID representation.
336 337 338 339 340 341 |
# File 'lib/bson/binary.rb', line 336 def self.from_java_legacy_uuid(uuid_binary) uuid_binary.sub!(/\A(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)\z/) do (::Regexp.last_match[1..8].reverse + ::Regexp.last_match[9..16].reverse).join end new(uuid_binary, :uuid_old) end |
.from_python_legacy_uuid(uuid_binary) ⇒ BSON::Binary
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Constructs a new binary object from a python legacy-format binary UUID representation.
351 352 353 |
# File 'lib/bson/binary.rb', line 351 def self.from_python_legacy_uuid(uuid_binary) new(uuid_binary, :uuid_old) end |
.from_standard_uuid(uuid_binary) ⇒ BSON::Binary
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Constructs a new binary object from a standard-format binary UUID representation.
311 312 313 |
# File 'lib/bson/binary.rb', line 311 def self.from_standard_uuid(uuid_binary) new(uuid_binary, :uuid) end |
.from_uuid(uuid, representation = nil) ⇒ Binary
Creates a BSON::Binary from a string representation of a UUID.
The UUID may be given in either 00112233-4455-6677-8899-aabbccddeeff or 00112233445566778899AABBCCDDEEFF format - specifically, any dashes in the UUID are removed and both upper and lower case letters are acceptable.
The input UUID string is always interpreted to be in the RFC 4122 format.
If representation is not provided, this method creates a BSON::Binary of subtype 4 (:uuid). If representation is provided, it must be one of :standard, :csharp_legacy, :java_legacy or :python_legacy. If representation is :standard, this method creates a subtype 4 (:uuid) binary which is the same behavior as if representation was not provided. For other representations, this method creates a Binary of subtype 3 (:uuid_old) with the UUID converted to the appropriate legacy MongoDB UUID storage format.
291 292 293 294 295 296 297 298 299 300 301 |
# File 'lib/bson/binary.rb', line 291 def self.from_uuid(uuid, representation = nil) raise ArgumentError, "Representation must be given as a symbol: #{representation}" if representation.is_a?(String) uuid_binary = uuid.delete('-').scan(/../).map(&:hex).map(&:chr).join representation ||= :standard handler = :"from_#{representation}_uuid" raise ArgumentError, "Invalid representation: #{representation}" unless respond_to?(handler) send(handler, uuid_binary) end |
Instance Method Details
#==(other) ⇒ true, false Also known as: eql?
Determine if this binary object is equal to another object.
85 86 87 88 89 |
# File 'lib/bson/binary.rb', line 85 def ==(other) return false unless other.is_a?(Binary) type == other.type && data == other.data end |
#as_extended_json(**options) ⇒ Hash
Converts this object to a representation directly serializable to Extended JSON (github.com/mongodb/specifications/blob/master/source/extended-json.rst).
120 121 122 123 124 125 126 127 128 129 130 131 |
# File 'lib/bson/binary.rb', line 120 def as_extended_json(**) subtype = @raw_type.each_byte.map { |c| c.to_s(16) }.join subtype = "0#{subtype}" if subtype.length == 1 value = Base64.encode64(data).strip if [:mode] == :legacy { '$binary' => value, '$type' => subtype } else { '$binary' => { 'base64' => value, 'subType' => subtype } } end end |
#as_json(*_args) ⇒ Hash
Return a representation of the object for use in application-level JSON serialization. Since BSON::Binary is used exclusively in BSON-related contexts, this method returns the canonical Extended JSON representation.
109 110 111 |
# File 'lib/bson/binary.rb', line 109 def as_json(*_args) as_extended_json end |
#hash ⇒ Fixnum
Generates a Fixnum hash value for this object.
Allows using Binary as hash keys.
99 100 101 |
# File 'lib/bson/binary.rb', line 99 def hash [ data, type ].hash end |
#inspect ⇒ String
Get a nice string for use with object inspection.
170 171 172 |
# File 'lib/bson/binary.rb', line 170 def inspect "<BSON::Binary:0x#{object_id} type=#{type} data=0x#{data[0, 8].unpack1('H*')}...>" end |
#to_bson(buffer = ByteBuffer.new) ⇒ BSON::ByteBuffer
Encode the binary type
226 227 228 229 230 231 232 233 |
# File 'lib/bson/binary.rb', line 226 def to_bson(buffer = ByteBuffer.new) position = buffer.length buffer.put_int32(0) buffer.put_byte(@raw_type) buffer.put_int32(data.bytesize) if type == :old buffer.put_bytes(data) buffer.replace_int32(position, buffer.length - position - 5) end |
#to_uuid(representation = nil) ⇒ String
Returns a string representation of the UUID stored in this Binary.
If the Binary is of subtype 4 (:uuid), this method returns the UUID in RFC 4122 format. If the representation parameter is provided, it must be the value :standard as a symbol or a string.
If the Binary is of subtype 3 (:uuid_old), this method requires that the representation parameter is provided and is one of :csharp_legacy, :java_legacy or :python_legacy or the equivalent strings. In this case the method assumes the Binary stores the UUID in the specified format, transforms the stored bytes to the standard RFC 4122 representation and returns the UUID in RFC 4122 format.
If the Binary is of another subtype, this method raises TypeError.
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 |
# File 'lib/bson/binary.rb', line 200 def to_uuid(representation = nil) if representation.is_a?(String) raise ArgumentError, "Representation must be given as a symbol: #{representation.inspect}" end case type when :uuid from_uuid_to_uuid(representation || :standard) when :uuid_old from_uuid_old_to_uuid(representation) else raise TypeError, "The type of Binary must be :uuid or :uuid_old, this object is: #{type.inspect}" end end |