smooth-json

This crate allows for flattening JSON objects into objects ready for use in Parquet, CSV, or other or data data styles.

The flattening is similar to ElasticSearch's ingestion flattening or what would be needed for VAST's DB and Table integrations.

Features

• Flatten serde_json's Value variants into structures suitable for use with applications that are expecting data or columnar data formats.
• Pass a custom separator by instantiating a Flattener and passing the separator.

Examples

Standard Usage

use smooth_json;
use serde_json::json;

fn main() {
    let flattener = smooth_json::Flattener::new();

    let example = json!({
        "name": "John Doe",
        "age": 43,
        "address": {
            "street": "10 Downing Street",
            "city": "London"
        },
        "phones": [
            "+44 1234567",
            "+44 2345678"
        ]
    });

    let flattened_example = flattener.flatten(&example);
    
    println!("{}", flattened_example);
    /*
    {
        "address.city": "London",
        "address.street": "10 Downing Street",
        "age": 43,
        "name": "John Doe",
        "phones": [
            "+44 1234567",
            "+44 2345678"
        ]
    }
    */
}

Custom Separator Usage

use serde_json::json;
use smooth_json;

fn main() {
    let flattener = smooth_json::Flattener{separator: "$"};

    let example = json!({
        "a": {
            "b": 1
        }});

    let flattened_example = flattener.flatten(&example);

    println!("{}", flattened_example);
    /*
    {
        "a$b": 1
    }
    */
}