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Don Newton379ae252019-04-01 12:17:06 -04001// Copyright (C) MongoDB, Inc. 2017-present.
2//
3// Licensed under the Apache License, Version 2.0 (the "License"); you may
4// not use this file except in compliance with the License. You may obtain
5// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
6//
7// Based on gopkg.in/mgo.v2/bson by Gustavo Niemeyer
8// See THIRD-PARTY-NOTICES for original license terms.
9
10// +build go1.9
11
12package bson
13
14import (
15 "github.com/mongodb/mongo-go-driver/bson/primitive"
16)
17
18// Zeroer allows custom struct types to implement a report of zero
19// state. All struct types that don't implement Zeroer or where IsZero
20// returns false are considered to be not zero.
21type Zeroer interface {
22 IsZero() bool
23}
24
25// D represents a BSON Document. This type can be used to represent BSON in a concise and readable
26// manner. It should generally be used when serializing to BSON. For deserializing, the Raw or
27// Document types should be used.
28//
29// Example usage:
30//
31// bson.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
32//
33// This type should be used in situations where order matters, such as MongoDB commands. If the
34// order is not important, a map is more comfortable and concise.
35type D = primitive.D
36
37// E represents a BSON element for a D. It is usually used inside a D.
38type E = primitive.E
39
40// M is an unordered, concise representation of a BSON Document. It should generally be used to
41// serialize BSON when the order of the elements of a BSON document do not matter. If the element
42// order matters, use a D instead.
43//
44// Example usage:
45//
46// bson.M{"foo": "bar", "hello": "world", "pi": 3.14159}
47//
48// This type is handled in the encoders as a regular map[string]interface{}. The elements will be
49// serialized in an undefined, random order, and the order will be different each time.
50type M = primitive.M
51
52// An A represents a BSON array. This type can be used to represent a BSON array in a concise and
53// readable manner. It should generally be used when serializing to BSON. For deserializing, the
54// RawArray or Array types should be used.
55//
56// Example usage:
57//
58// bson.A{"bar", "world", 3.14159, bson.D{{"qux", 12345}}}
59//
60type A = primitive.A