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

use holochain_core_types::{
    chain_header::ChainHeader,
    entry::{entry_type::EntryType, Entry},
};

use holochain_json_api::{error::JsonError, json::*};
use holochain_persistence_api::cas::content::Address;

// QueryArgsNames -- support querying single/multiple EntryType names
#[derive(Deserialize, Debug, Serialize, DefaultJson, Clone, PartialEq)]
#[serde(untagged)] // No type in serialized data; try deserializing as a String, then as a Vec<String>
pub enum QueryArgsNames {
    QueryName(String),
    QueryList(Vec<String>),
}

impl Default for QueryArgsNames {
    fn default() -> QueryArgsNames {
        QueryArgsNames::QueryList(vec![])
    }
}

// Handle automatic conversions from various types into the appropriate QueryArgsNames enum type
impl From<EntryType> for QueryArgsNames {
    fn from(e: EntryType) -> QueryArgsNames {
        QueryArgsNames::QueryName(e.to_string())
    }
}

impl From<String> for QueryArgsNames {
    fn from(s: String) -> QueryArgsNames {
        QueryArgsNames::QueryName(s)
    }
}

impl<'a> From<&'a str> for QueryArgsNames {
    fn from(s: &'a str) -> QueryArgsNames {
        QueryArgsNames::QueryName(s.to_string())
    }
}

impl From<Vec<String>> for QueryArgsNames {
    fn from(v: Vec<String>) -> QueryArgsNames {
        QueryArgsNames::QueryList(v)
    }
}

impl<'a> From<Vec<&'a str>> for QueryArgsNames {
    fn from(v: Vec<&'a str>) -> QueryArgsNames {
        QueryArgsNames::QueryList(v.iter().map(|s| (*s).to_string()).collect())
    }
}

// All version of the hdk::query...() API vector to these Args
#[derive(Deserialize, Default, Debug, Serialize, DefaultJson)]
pub struct QueryArgs {
    pub entry_type_names: QueryArgsNames,
    pub options: QueryArgsOptions,
}

#[derive(Deserialize, Default, Debug, Serialize, DefaultJson)]
pub struct QueryArgsOptions {
    pub start: usize,
    pub limit: usize,
    // pub ordering: bool,  // forward or reverse (requires doubly-linked chain perhaps)
    // pub filter_by: ???,
    pub headers: bool,
    pub entries: bool,
}

#[derive(Deserialize, Debug, Serialize, DefaultJson, Clone, PartialEq)]
pub enum QueryResult {
    Addresses(Vec<Address>),
    Headers(Vec<ChainHeader>),
    Entries(Vec<(Address, Entry)>),
    HeadersWithEntries(Vec<(ChainHeader, Entry)>),
}