ORM

This ORM¹ focuses to simplify data manipulation.

This is achieved by:

• using immutable objects
• each aggregate owning the objects it references
• using monads to fetch aggregates (from the Innmind ecosystem)
• using the specification pattern to match aggregates

This allows:

• simpler app design (as it can be pure)
• memory efficiency (the ORM doesn't keep objects in memory)
• long living processes (since there is no memory leaks)
• to work asynchronously

Installation

composer require formal/orm

Usage

use Formal\ORM\{
    Manager,
    Sort,
};
use Formal\AccessLayer\Connection\PDO;
use Innmind\Url\Url;

$manager = Manager::sql(
    PDO::of(Url::of('mysql://user:pwd@host:3306/database?charset=utf8mb4')),
);
$_ = $manager
    ->repository(YourAggregate::class)
    ->all()
    ->sort('someProperty', Sort::asc)
    ->drop(150)
    ->take(50)
    ->foreach(static fn($aggregate) => doStuff($aggregate));

This simple example will retrieve from the database 50 elements (from index 151 to 200) sorted by someProperty in ascending order and will call the function doStuff on each aggregate.

Note

The elements are streamed meaning only one aggregate is in memory at a time allowing you to deal with long lists of elements in a memory safe way.

Documentation

Full documentation available in the here.

Footnotes

1. Object Relational Mapping ↩