bayard 0.9.0

A distributed search server.
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
132

pub mod all;
pub mod boolean;
pub mod boost;
pub mod fuzzy_term;
pub mod phrase;
pub mod query_string;
pub mod range;
pub mod regex;
pub mod term;

use std::fmt;

use tantivy::{
    query::{Query, QueryClone},
    Searcher,
};

use crate::proto::index::{query::Kind as ProtoQueryKind, Query as ProtoQuery};

use self::{
    all::create_all_query,
    boolean::{create_boolean_query, BooleanQueryArgs},
    boost::{create_boost_query, BoostQueryArgs},
    fuzzy_term::{create_fuzzy_term_query, FuzzyTermQueryArgs},
    phrase::{create_phrase_query, PhraseQueryArgs},
    query_string::{create_query_string_query, QueryStringQueryArgs},
    range::{create_range_query, RangeQueryArgs},
    regex::{create_regex_query, RegexQueryArgs},
    term::{create_term_query, TermQueryArgs},
};

#[derive(Debug, Clone, Copy)]
pub enum QueryFactoryErrorKind {
    CreateError,
    InvalidArgument,
}

impl QueryFactoryErrorKind {
    pub fn with_error<E>(self, source: E) -> QueryFactoryError
    where
        anyhow::Error: From<E>,
    {
        QueryFactoryError {
            kind: self,
            source: From::from(source),
        }
    }
}

#[derive(thiserror::Error, Debug)]
#[error("QueryFactoryError(kind={kind:?}, source={source})")]
pub struct QueryFactoryError {
    pub kind: QueryFactoryErrorKind,
    #[source]
    source: anyhow::Error,
}

impl QueryFactoryError {
    pub fn add_context<C>(self, ctx: C) -> Self
    where
        C: fmt::Display + Send + Sync + 'static,
    {
        QueryFactoryError {
            kind: self.kind,
            source: self.source.context(ctx),
        }
    }

    pub fn kind(&self) -> QueryFactoryErrorKind {
        self.kind
    }
}

pub fn create_query(
    query: &ProtoQuery,
    searcher: &Searcher,
) -> Result<Box<dyn Query>, QueryFactoryError> {
    let kind = ProtoQueryKind::from_i32(query.kind).ok_or_else(|| {
        QueryFactoryErrorKind::InvalidArgument
            .with_error(anyhow::anyhow!("Undefined query kind {}", query.kind))
    })?;

    let query_obj = match kind {
        ProtoQueryKind::All => create_all_query().box_clone(),
        ProtoQueryKind::Boolean => {
            let args = serde_json::from_slice::<BooleanQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_boolean_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::Boost => {
            let args = serde_json::from_slice::<BoostQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_boost_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::FuzzyTerm => {
            let args = serde_json::from_slice::<FuzzyTermQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_fuzzy_term_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::Phrase => {
            let args = serde_json::from_slice::<PhraseQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_phrase_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::QueryString => {
            let args = serde_json::from_slice::<QueryStringQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_query_string_query(&args, searcher)?
        }
        ProtoQueryKind::Range => {
            let args = serde_json::from_slice::<RangeQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_range_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::Regex => {
            let args = serde_json::from_slice::<RegexQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_regex_query(&args, searcher)?.box_clone()
        }
        ProtoQueryKind::Term => {
            let args = serde_json::from_slice::<TermQueryArgs>(query.options.as_slice())
                .map_err(|e| QueryFactoryErrorKind::InvalidArgument.with_error(e))?;
            create_term_query(&args, searcher)?.box_clone()
        }
        _ => {
            return Err(QueryFactoryErrorKind::InvalidArgument
                .with_error(anyhow::anyhow!("Unsupported query kind {:?}", kind)))
        }
    };

    Ok(query_obj)
}