mongodb 0.9.1

The official MongoDB driver for Rust (currently in alpha)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

use std::time::Duration;

use bson::{doc, Document};
use serde::{Serialize, Serializer};
use typed_builder::TypedBuilder;

use crate::{
    bson_util,
    coll::options::{
        FindOneAndDeleteOptions,
        FindOneAndReplaceOptions,
        FindOneAndUpdateOptions,
        ReturnDocument,
        UpdateModifications,
    },
    collation::Collation,
    concern::WriteConcern,
};

#[derive(Debug, Serialize)]
pub(super) enum Modification {
    #[serde(rename = "remove", serialize_with = "self::serialize_true")]
    Delete,
    #[serde(rename = "update")]
    Update(UpdateModifications),
}

fn serialize_true<S: Serializer>(s: S) -> std::result::Result<S::Ok, S::Error> {
    s.serialize_bool(true)
}

#[serde_with::skip_serializing_none]
#[derive(Debug, TypedBuilder, Serialize)]
#[serde(rename_all = "camelCase")]
pub(super) struct FindAndModifyOptions {
    #[serde(flatten)]
    pub(crate) modification: Modification,

    #[builder(default)]
    pub(crate) sort: Option<Document>,

    #[builder(default)]
    pub(crate) new: Option<bool>,

    #[builder(default)]
    pub(crate) upsert: Option<bool>,

    #[builder(default)]
    pub(crate) bypass_document_validation: Option<bool>,

    #[builder(default)]
    pub(crate) write_concern: Option<WriteConcern>,

    #[builder(default)]
    pub(crate) array_filters: Option<Vec<Document>>,

    #[builder(default)]
    #[serde(
        serialize_with = "bson_util::serialize_duration_as_i64_millis",
        rename = "maxTimeMS"
    )]
    pub(crate) max_time: Option<Duration>,

    #[builder(default)]
    #[serde(rename = "fields")]
    pub(crate) projection: Option<Document>,

    #[builder(default)]
    pub(crate) collation: Option<Collation>,
}

impl FindAndModifyOptions {
    pub(super) fn from_find_one_and_delete_options(
        opts: FindOneAndDeleteOptions,
    ) -> FindAndModifyOptions {
        FindAndModifyOptions::builder()
            .modification(Modification::Delete)
            .collation(opts.collation)
            .max_time(opts.max_time)
            .projection(opts.projection)
            .sort(opts.sort)
            .write_concern(opts.write_concern)
            .build()
    }

    pub(super) fn from_find_one_and_replace_options(
        replacement: Document,
        opts: FindOneAndReplaceOptions,
    ) -> FindAndModifyOptions {
        let replacement = UpdateModifications::Document(replacement);
        FindAndModifyOptions::builder()
            .modification(Modification::Update(replacement))
            .collation(opts.collation)
            .bypass_document_validation(opts.bypass_document_validation)
            .max_time(opts.max_time)
            .projection(opts.projection)
            .new(return_document_to_bool(opts.return_document))
            .sort(opts.sort)
            .upsert(opts.upsert)
            .write_concern(opts.write_concern)
            .build()
    }

    pub(super) fn from_find_one_and_update_options(
        update: UpdateModifications,
        opts: FindOneAndUpdateOptions,
    ) -> FindAndModifyOptions {
        FindAndModifyOptions::builder()
            .modification(Modification::Update(update))
            .collation(opts.collation)
            .array_filters(opts.array_filters)
            .bypass_document_validation(opts.bypass_document_validation)
            .max_time(opts.max_time)
            .projection(opts.projection)
            .new(return_document_to_bool(opts.return_document))
            .sort(opts.sort)
            .upsert(opts.upsert)
            .write_concern(opts.write_concern)
            .build()
    }
}

fn return_document_to_bool(return_document: Option<ReturnDocument>) -> Option<bool> {
    if let Some(return_document) = return_document {
        return match return_document {
            ReturnDocument::After => Some(true),
            ReturnDocument::Before => Some(false),
        };
    }
    None
}