Sweelix Node management

Sweelix node management is an implementation of Rational numbers to key nested sets by Dan Hazel (http://arxiv.org/abs/0806.3115).

Installation

If you use Packagist for installing packages, then you can update your composer.json like this :

{
    "require": {
        "sweelix/tree": "*"
    }
}

Howto use it

Create a Node class and attach the NodeTrait to it. You can look at the class Node.

use sweelix\tree\NodeTrait;

class MyNode {
    use NodeTrait;
}

Now you can create a node :

$node = new MyNode();
$node->setPath('1.2.1');

$leftBorder = $node->getLeft();

$rightBorder = $node->getRight();

$treeInfo = $node->getMatrix()->toArray();

// insert your node in DB using leftBorder and rightBorder
// do not forget to also store the tree info

Now you can search the node in your DB using regular nested set methods :

# find all the children
select * from nodes where left > :nodeLeft and right < :nodeRight order by nodeLeft;

# find all the parents
select * from nodes where left < :nodeLeft and right > :nodeRight order by nodeRight;

Contributing

All code contributions - including those of people having commit access - must go through a pull request and approved by a core developer before being merged. This is to ensure proper review of all the code.

Fork the project, create a feature branch , and send us a pull request.