struct Mongo::WriteConcern

• Mongo::WriteConcern
• Struct
• Value
• Object

Overview

Write concern describes the level of acknowledgment requested from MongoDB for write operations to a standalone mongod or to replica sets or to sharded clusters.

In sharded clusters, mongos instances will pass the write concern on to the shards.

See: the official documentation

Included Modules

• BSON::Serializable

Defined in:

Constructors

• .new(bson : BSON)

  Allocate an instance and copies data from a BSON struct.

• .new(j : Bool | Nil = nil, w : Int32 | Nil | String | Nil = nil, w_timeout : Int64 | Nil = nil)

  Create a WriteConcern instance.

Class Method Summary

• .from_bson(bson : BSON)

  NOTE See self.new.

Instance Method Summary

• #j : Bool | Nil

  The j option requests acknowledgment from MongoDB that the write operation has been written to the on-disk journal.

• #j=(j : Bool | Nil)

  The j option requests acknowledgment from MongoDB that the write operation has been written to the on-disk journal.

• #to_bson(bson = BSON.new)

  Converts to a BSON representation.

• #unacknowledged?
• #w : Int32 | String | Nil

  The w option requests acknowledgment that the write operation has propagated to a specified number of mongod instances or to mongod instances with specified tags.

• #w=(w : Int32 | String | Nil)

  The w option requests acknowledgment that the write operation has propagated to a specified number of mongod instances or to mongod instances with specified tags.

• #w_timeout : Int64 | Nil
• #w_timeout=(w_timeout : Int64 | Nil)

Constructor Detail

class User
  include BSON::Serializable
  property name : String
end

data = BSON.new
data["name"] = "John"
User.new(data)

Class Method Detail

Instance Method Detail

user = User.new name: "John"
bson = user.to_bson