A simple Kotlin library to Query over Json Data.

Sakib Sami

Last update: Oct 3, 2022

Related tags

Overview

kotlin-jsonq

A simple Kotlin library to Query over JSON Data

Installation

Gradle,

allprojects {
    repositories {
        ...
        maven { url "https://jitpack.io" }
    }
}

And

dependencies {
    implementation 'ninja.sakib:kotlin-jsonq:v0.2'
}

Usage

Let's see a quick example:

Sample data (data.json)

```json { "name": "products", "description": "Features product list", "vendor": { "name": "Computer Source BD", "email": "[email protected]", "website": "www.example.com" }, "users": [ { "id": 1, "name": "Johura Akter Sumi", "location": "Barisal" }, { "id": 2, "name": "Mehedi Hasan Nahid", "location": "Barisal" }, { "id": 3, "name": "Ariful Islam", "location": "Barishal" }, { "id": 4, "name": "Suhel Ahmed", "location": "Sylhet" }, { "id": 5, "name": "Firoz Serniabat", "location": "Gournodi" }, { "id": 5, "name": "Musa Jewel", "location": "Barishal", "visits": [ { "name": "Sylhet", "year": 2011 }, { "name": "Cox's Bazar", "year": 2012 }, { "name": "Bandarbar", "year": 2014 } ] } ], "products": [ { "id": 1, "city": "bsl", "name": "iPhone", "cat": 1, "price": 80000.5 }, { "id": 2, "city": null, "name": "macbook pro", "cat": 2, "price": 150000.1 }, { "id": 3, "city": "dhk", "name": "Redmi 3S Prime", "cat": 1, "price": 12000.1 }, { "id": 4, "city": null, "name": "Redmi 4X", "cat": 1, "price": 15000.1 }, { "id": 5, "city": "bsl", "name": "macbook air", "cat": 2, "price": 110000.00 }, { "id": 6, "city": null, "name": "macbook air 1", "cat": 2, "price": 81000.2 } ], "cities": [ { "id": 1, "name": "Barishal" }, { "id": 2, "name": "Noakhali" }, { "id": 3, "name": "Dhaka" }, { "id": 4, "name": "Rajshahi" }, { "id": 5, "name": "Chittagong" } ], "arr": [ 1, 2, 3, 4 ] } ```

Examples

Initialization,

val inputStream = Thread.currentThread().contextClassLoader.getResourceAsStream("data.json")
jsonq = JSONQ(inputStream)

find,

val obj = jsonq.find("users.5.visits")

Result,

[
  {
    "name": "Sylhet",
    "year": 2011
  },
  {
    "name": "Cox's Bazar",
    "year": 2012
  },
  {
    "name": "Bandarbar",
    "year": 2014
  }
]

whereEq,

val res = jsonq.from("users.5.visits").whereEq("name", "Bandarbar")

Result,

[
  {
    "name": "Bandarbar",
    "year": 2014
  }
]

hasSuffix,

val res = jsonq.from("users").hasSuffix("name", "Sumi")

Result,

[
  {
    "id": 1,
    "name": "Johura Akter Sumi",
    "location": "Barisal"
  }
]

Query Chaining

val res = jsonq.from("users").whereGe("id", 3).whereEq("location", "Barisal").contains("name", "Is")

Result,

[
  {
    "id": 3,
    "name": "Ariful Islam",
    "location": "Barisal"
  }
]

TODO

Add missing methods
Write full documentation with example

Bugs and Issues

If you encounter any bugs or issues, feel free to open an issue at github.

Also, you can shoot me an email to mailto:[email protected] for hugs or bugs.

Special Mention

Nahid Bin Azhar for the original idea.

Contribution

If you are interested to make the package better please send pull requests or create an issue so that others can fix. Read the contribution guide here

See all contributors

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