JSON ORM 🚀

json-orm is a Ruby gem providing a lightweight, JSON-based Object-Relational Mapping (ORM) system, primarily designed for simple data analytical applications 📊. It includes CRUD operations, transaction support, custom validations, and query chaining, ideal for small-scale projects.

🚧 Important Development Notice 🚧

While designed for simplicity and ease of use, json-orm hasn't been optimized for file size or fully vetted for reliability as a database storage solution. It's best used in contexts where these factors are not critical.

Features ✨

• CRUD operations on JSON files
• Transaction support with commit and rollback
• Custom attribute validation
• Query chaining for advanced data filtering
• Basic logging for debugging
• Thread-safe operations

Future Plans

• [ ] Refactor logging
• [x] Add tests to DB class
• [] Add RuboCop to GitHub Actions
• [] Clean up better after test
• [x] Improve test to validate reliability
• [x] Add Validations class

Installation 🔧

Clone the repository and include it in your Ruby project:

git clone https://github.com/your-username/jsonorm.git

Usage 📘

Basic Operations

db = JSONORM::JSONDB.new('your_data.json')
orm = JSONORM::ORM.new(db)

orm.create({name: "John Doe", email: "john@example.com"})
found_record = orm.find(1)
orm.update(1, {name: "Jane Doe"})
orm.delete(1)

Transactions

orm.begin_transaction
# Operations...
orm.commit_transaction

JSONORM::Validations

The JSONORM::Validations module provides a flexible way to add validations to your Ruby objects. Here's how to use the newly added validators:

Length Validator

Checks if the length of a value is within a specified range.

Usage:

validate :attribute_name, :length, minimum: 5, maximum: 10

Example:

class User
  include JSONORM::Validations

  attr_accessor :name

  validate :name, :length, minimum: 3, maximum: 50
end

user = User.new
user.name = "Jo"
user.validate!  # Raises "Validation failed: name is too short (minimum is 3 characters)"

Inclusion Validator

Ensures a value is included in a specified set.

Usage:

validate :attribute_name, :inclusion, in: [set_of_values]

Example:

class Product
  include JSONORM::Validations

  attr_accessor :category

  validate :category, :inclusion, in: ['book', 'electronics', 'clothing']
end

product = Product.new
product.category = "food"
product.validate!  # Raises "Validation failed: category is not included in the list"

Exclusion Validator

Ensures a value is not included in a specified set.

Usage:

validate :attribute_name, :exclusion, in: [set_of_values]

Example:

class Account
  include JSONORM::Validations

  attr_accessor :username

  validate :username, :exclusion, in: ['admin', 'root']
end

account = Account.new
account.username = "admin"
account.validate!  # Raises "Validation failed: username is reserved"

Custom Validator

Allows for custom validation logic through a lambda or proc.

Usage:

validate :attribute_name, :custom, with: lambda { |value| some_custom_condition }

Example:

class Order
  include JSONORM::Validations

  attr_accessor :total_price

  validate :total_price, :custom, with: ->(value) { value > 0 && value < 10000 }
end

order = Order.new
order.total_price = -5
order.validate!  # Raises "Validation failed: total_price is not valid"

Integrating Validators

To integrate these validators into your validate! method, simply add the cases as shown in the initial response to handle each validation type. Ensure that your validate! method checks for each validator type and applies the corresponding validation logic.

Query Chaining

results = orm.where(age: 30).where(city: "Wonderland").execute

Testing with MiniTest 🧪

Tests are located in the test directory. Run them using MiniTest to ensure reliability.

Contributing 🤝

Contributions are welcome. Please ensure to follow Ruby coding style and best practices, and write tests for new functionalities.

License

Distributed under the MIT License.