mintdb 0.1.0-beta.3

MintDB is an open source document based database built in Rust.
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

use serde_json::Value;
use serde_json::json;
use crate::kvs::table::{TableMetadata, Table};
use crate::prelude::*;

use super::Rule;

pub fn create_read_rule(tb: &mut Table, rule: Rule) -> Result<Value> {
    for (_, op, _) in rule.iter() {
        match op.as_str() {
            "==" => continue,
            "!=" => continue,
            _ => return Err(Error::Request)
        }
    }
    let res = json!(rule);
    tb.read.extend(rule);
    Ok(res)
}

pub fn validate_read(tb_metadata: &TableMetadata, ctx: &Value) -> Result<()> {
    for (lhs, op, rhs) in tb_metadata.read.iter() {
        if lhs.starts_with("doc.") {
            continue;
        }
        let rhs = match &ctx[rhs] {
            Value::String(s) => s,
            _ => return Err(Error::Request)
        };
        match op.as_str() {
            "==" => {
                if lhs == rhs {
                    continue;
                } else {
                    return Err(Error::Request)
                }
            }
            "!=" => {
                if lhs != rhs {
                    continue;
                } else {
                    return Err(Error::Request)
                }
            }
            _ => return Err(Error::Request)
        }
    }
    Ok(())
}
pub fn validate_document_read(tb_metadata: &TableMetadata, document: &Value, ctx: &Value) -> Result<()> {
    for (lhs, op, rhs) in tb_metadata.read.iter() {
        if !lhs.starts_with("doc.") {
            continue;
        }
        let lhs = match &document[lhs] {
            Value::String(s) => s,
            _ => return Err(Error::Request)
        };
        let rhs = match &ctx[rhs] {
            Value::String(s) => s,
            _ => return Err(Error::Request)
        };
        match op.as_str() {
            "==" => {
                if lhs == rhs {
                    continue;
                } else {
                    return Err(Error::Request)
                }
            }
            "!=" => {
                if lhs != rhs {
                    continue;
                } else {
                    return Err(Error::Request)
                }
            }
            _ => return Err(Error::Request)
        }
    }
    Ok(())
}