ObjectId class

ObjectId

This class allows you to create and manipulate bson ObjectIds.

Example:

final id = ObjectId();
final id2 = ObjectId.fromHexString('5f527e9b350aa5f9709daf16');
final id3 = ObjectId.fromBytes(
  [95, 82, 126, 187, 124, 177, 57, 83, 165, 119, 211, 48],
);
final id4 = ObjectId.fromValues(timestamp, processUnique, counter);

Available extensions

• ObjectIdEJsonEncoderExtension

Constructors

ObjectId()

Creates ObjectId instance.

ObjectId.fromBytes(List<int> bytes)

Creates ObjectId from bytes.

ObjectId.fromHexString(String hexString)

Creates ObjectId from hex string.

ObjectId.fromJson(String json)

Creates ObjectId from a JSON string.

factory

ObjectId.fromTimestamp(DateTime timestamp)

Creates ObjectId from provided timestamp.

ObjectId.fromValues(int millisecondsSinceEpoch, int processUnique, int counter)

Creates ObjectId from provided values.

Properties

bytes → Uint8List

ObjectId bytes.

no setter

hashCode → int

The hash code for this object.

no setter, override

hexString → String

Returns hex string for current ObjectId.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

timestamp → DateTime

Returns the generation date (accurate up to the second) that this ObjectId was generated.

no setter

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → dynamic

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Methods

isValid(String hexString) → bool

Whether hexString is a valid ObjectId

Constants

byteLength → const int

Length of the ObjectId in bytes.

hexStringLength → const int

Length of the ObjectId hexString.