opensearch-dsl 0.3.1

Strongly typed OpenSearch DSL
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

//! You can use the `script_fields` parameter to retrieve a
//! [script evaluation](https://www.elastic.co/guide/en/opensearch/reference/current/modules-scripting.html)
//! (based on different fields) for each hit.
//!
//! <https://www.elastic.co/guide/en/opensearch/reference/current/search-fields.html#script-fields>

use crate::Script;

/// A script to calculate field value from the `_source` fields
#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
pub struct ScriptField {
    script: Script,
}

impl From<Script> for ScriptField {
    fn from(value: Script) -> Self {
        Self { script: value }
    }
}

impl From<&str> for ScriptField {
    fn from(value: &str) -> Self {
        Self {
            script: Script::source(value),
        }
    }
}

impl From<String> for ScriptField {
    fn from(value: String) -> Self {
        Self {
            script: Script::source(value),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::{util::assert_serialize, Search};

    #[test]
    fn serializes_correctly() {
        let subject = Search::new()
            .script_fields(
                "test1",
                Script::source("doc['price'].value * 2").lang("painless"),
            )
            .script_fields(
                "test2",
                Script::source("doc['price'].value * params.factor")
                    .lang("painless")
                    .param("factor", 2.0),
            )
            .script_fields("test3", "params['_source']['message']");

        let expectation = json!({
            "script_fields": {
                "test1": {
                    "script": {
                        "lang": "painless",
                        "source": "doc['price'].value * 2"
                    }
                },
                "test2": {
                    "script": {
                        "lang": "painless",
                        "source": "doc['price'].value * params.factor",
                        "params": {
                            "factor": 2.0
                        }
                    }
                },
                "test3": {
                    "script": {
                        "source": "params['_source']['message']"
                    }
                }
            }
        });

        assert_serialize(subject, expectation);
    }
}