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sonic_rs

Function get_by_schema

Source 
pub fn get_by_schema<'de, Input: JsonInput<'de>>(
    json: Input,
    schema: Value,
) -> Result<Value>
Expand description

get_by_schema returns new Value from the given schema and json data

This function can be used to query json data on demand.

If a key path, for example [“b”, “b1”] exists in the schema, but does not exist in the data, then the data will be filled with the corresponding default value in the schema.

If a key path does’not exists in the schema, but exists in the data, then the value in the schema will be replaced with the corresponding value in the data.

§Examples

use sonic_rs::json;
let schema = json!({
    "a": null, // default value is `null`
    "b": {
        "b1": {},
        "b2": "default string" // default value is string
    },
    "c": [], // default value is []
});

let data = r#"
{
    "a": {},
    "b": {
        "b1": 123
    },
    "c": [1, 2, 3],
    "d": "balabala..."
}"#;

// parse json data by schem, we can parse into the schema value inplace
let got = sonic_rs::get_by_schema(data, schema).unwrap();
assert_eq!(
    got,
    json!({
        "a": {},
        "b": {
            "b1": 123,
            "b2": "default string"
        },
        "c": [1, 2, 3]
    })
);