Tnuctipun

The Tnuctipun of Ringworld — ancient, subversive, ingenious — or a type-safe MongoDB builder library.

Features

• Type-safe field access: Use compile-time validated field names
• MongoDB query building: Build complex queries with type safety
• MongoDB projection building: Create projections with fluent method chaining
• MongoDB update building: Create update documents with type-safe field operations
• Derive macros: Automatically generate field witnesses and comparable traits
• Compile-time validation: Catch field name typos and type mismatches at compile time

Usage

Add this to your Cargo.toml:

[dependencies]
tnuctipun = "0.1.1"

The library only requires the bson crate for MongoDB document types and provides type-safe query building capabilities.

Example

use tnuctipun::{FieldWitnesses, MongoComparable, filters::empty, projection, updates};
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize, FieldWitnesses, MongoComparable)]
struct User {
    pub name: String,
    pub age: i32,
    pub email: String,
}

// Type-safe filter building with compile-time field validation
let mut filter_builder = empty::<User>();

filter_builder.eq::<user_fields::Name, _>("John".to_string());
filter_builder.gt::<user_fields::Age, _>(18);

// Convert to MongoDB document  
let filter_doc = filter_builder.and();
// Results in: { "$and": [{ "name": "John" }, { "age": { "$gt": 18 } }] }

// Type-safe projection building with method chaining
let projection_doc = projection::empty::<User>()
    .includes::<user_fields::Name>()
    .includes::<user_fields::Age>()
    .excludes::<user_fields::Email>()  // Hide sensitive data
    .build();
// Results in: { "name": 1, "age": 1, "email": 0 }

// Type-safe update building with compile-time field validation  
let update_doc = updates::empty::<User>()
    .set::<user_fields::Name, _>("Jane".to_string())
    .inc::<user_fields::Age, _>(1)
    .unset::<user_fields::Email>()
    .build();
// Results in: { 
//   "$set": { "name": "Jane" }, 
//   "$inc": { "age": 1 }, 
//   "$unset": { "email": "" } 
// }

Documentation

• User Guide - Comprehensive documentation with examples and tutorials
• API Documentation - Complete API reference
• Crates.io Documentation - Released version docs

Development

For information about contributing and releasing new versions, see:

• Release Guide - How to publish new versions
• Changelog - What's new in each version

License

This project is licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.