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|
//! These types are not used for generating `Index`es. They are provided to help with
//! creating compatible JSON structures for configuring the JavaScript search
//! function.
//!
//! *Reference:*
//! <http://elasticlunr.com/docs/configuration.js.html>
use std::collections::BTreeMap;
/// Used to set the search configuration for a specific field.
/// When `expand` or `bool` is `None`, elasticlunr.js will use the value from
/// the global configuration. The `boost` field, if present,
/// increases the importance of this field when ordering search results.
#[derive(Serialize, Deserialize, Default, Debug, Copy, Clone, Eq, PartialEq)]
pub struct SearchOptionsField {
#[serde(skip_serializing_if = "Option::is_none")]
pub boost: Option<u8>,
#[serde(skip_serializing_if = "Option::is_none")]
pub bool: Option<SearchBool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub expand: Option<bool>,
}
/// Sets which boolean model is used for searching with
/// multiple terms. Defaults to `Or`.
///
/// - *AND* requires every search term to be present in results
/// - *OR* accepts results which have at least one term
///
#[derive(Serialize, Deserialize, Debug, Copy, Clone, Eq, PartialEq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum SearchBool {
Or,
And,
}
impl Default for SearchBool {
fn default() -> Self {
SearchBool::Or
}
}
/// The search configuration map which is passed to the
/// elasticlunr.js `Index.search()` function.
///
/// |Key |Default|
/// |--------|-------|
/// |`bool` |`OR` |
/// |`expand`|`false`|
#[derive(Serialize, Deserialize, Default, Debug, Clone, Eq, PartialEq)]
pub struct SearchOptions {
pub bool: SearchBool,
pub expand: bool,
pub fields: BTreeMap<String, SearchOptionsField>,
}
#[cfg(test)]
mod tests {
use super::*;
use serde_json;
#[test]
fn test_normal_config() {
let options = SearchOptions {
fields: btreemap![
"title".into() => SearchOptionsField {
boost: Some(5),
..Default::default()
},
"body".into() => SearchOptionsField {
boost: Some(1),
..Default::default()
},
],
..Default::default()
};
let stringed = serde_json::to_string(&options).unwrap();
assert_eq!(
stringed,
r#"{"bool":"OR","expand":false,"fields":{"body":{"boost":1},"title":{"boost":5}}}"#
);
}
#[test]
fn test_complex_config() {
let options = SearchOptions {
fields: btreemap! {
"title".into() => SearchOptionsField {
expand: Some(true),
..Default::default()
},
"body".into() => SearchOptionsField {
bool: Some(SearchBool::Or),
..Default::default()
},
"breadcrumbs".into() => SearchOptionsField {
bool: Some(SearchBool::default()),
boost: Some(200),
..Default::default()
},
},
expand: false,
bool: SearchBool::And,
};
let stringed = serde_json::to_string_pretty(&options).unwrap();
assert_eq!(
stringed,
r#"{
"bool": "AND",
"expand": false,
"fields": {
"body": {
"bool": "OR"
},
"breadcrumbs": {
"boost": 200,
"bool": "OR"
},
"title": {
"expand": true
}
}
}"#
);
}
}
|
