Data Container

This package provides a data container. A data container can contain any data. The data can be accessed using dot-notation.

Installation

$ composer require mediact/data-container

Usage

Creating a container

A container can be created directly or using a factory.

<?php
use Mediact\DataContainer\DataContainer;
use Mediact\DataContainer\DataContainerFactory;

$data = [
    'categories' => [
        'foo' => ['name' => 'Foo'],
        'bar' => ['name' => 'Bar']
    ]
];

// Directly
$container = new DataContainer($data);

// Using a factory
$factory   = new DataContainerFactory();
$container = $factory->create($data);

Checking whether a value has been set with has()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
var_dump($container->has('categories.foo')); // true
var_dump($container->has('categories.qux')); // false

Getting a value with get()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
var_dump($container->get('categories.foo.name'));            // Foo
var_dump($container->get('categories.qux.name'));            // null
var_dump($container->get('categories.qux.name', 'Default')); // Default

Setting a value with set()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->set('categories.qux', ['name' => 'Qux']);
var_dump($container->get('categories.qux.name')); // Qux

Removing a value with remove()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->remove('categories.qux');
var_dump($container->has('categories.qux')); // false

The remove method also supports wildcards, for example remove('bar.*');

Getting paths that match a pattern with glob()

The glob method returns a list of paths that match the given pattern.

<?php
/** @var Mediact\DataContainer\DataContainer $container */
var_dump($container->glob('categories.*'));      // ['categories.foo', 'categories.bar']
var_dump($container->glob('categories.ba?'));    // ['categories.bar']
var_dump($container->glob('categories.ba[zr]')); // ['categories.bar']

Getting paths and their replacements with expand()

The expand method returns a list of paths that match the given pattern and also returns their replacements. The replacement can contain variables in a similar way as preg_replace.

<?php
/** @var Mediact\DataContainer\DataContainer $container */
var_dump($container->expand('categories.f*', 'cat.f$1'));      // ['categories.foo' => 'cat.foo']
var_dump($container->expand('categories.?a?', 'cat.$1a$2'));   // ['categories.bar' => 'cat.bar']
var_dump($container->expand('categories.ba[zr]', 'cat.ba$2')); // ['categories.bar' => 'cat.bar']

Getting branches that match a pattern with branch()

The branch method returns the paths that are matched by a pattern as a list of data containers.

<?php
/** @var Mediact\DataContainer\DataContainer $container */
foreach ($container->branch('categories.*') as $category) {
    var_dump($category->get('name')); // Foo, Bar
}

Getting a node from the container with node()

The node method returns a single container with the data from a path.

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$foo = $container->node('categories.foo');
var_dump($foo->get('name')); // Foo

Copying data with copy()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->copy('categories.foo', 'categories.qux');
var_dump($container->get('categories.qux')); // ['name' => 'Foo']

The copy method supports wildcards. The replacement can contain variables like used in expand().

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->copy('categories.*', 'copied_categories.$1');
var_dump($container->get('copied_categories.foo')); // ['name' => 'Foo']
var_dump($container->get('copied_categories.bar')); // ['name' => 'Bar']

Moving data with move()

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->move('categories.foo', 'categories.qux');
var_dump($container->has('categories.foo')); // false
var_dump($container->get('categories.qux')); // ['name' => 'Foo']

The move method supports wildcards. The replacement can contain variables like used in expand().

<?php
/** @var Mediact\DataContainer\DataContainer $container */
$container->move('categories.*', 'moved_categories.$1');
var_dump($container->has('categories.foo'));       // false
var_dump($container->has('categories.bar'));       // false
var_dump($container->get('moved_categories.foo')); // ['name' => 'Foo']
var_dump($container->get('moved_categories.bar')); // ['name' => 'Bar']

Creating a decorator

Decorators of a data container can be created using DataContainerDecoratorTrait.

<?php
use Mediact\DataContainer\DataContainer;
use Mediact\DataContainer\DataContainerInterface;
use Mediact\DataContainer\DataContainerDecoratorTrait;

class FooDataContainer implements DataContainerInterface
{
    use DataContainerDecoratorTrait;

    public function __construct(array $data = [])
    {
        $this->setData($data);
    }
}

class BarDataContainer implements DataContainerInterface
{
    use DataContainerDecoratorTrait;

    public function __construct(DataContainerInterface $storage = null)
    {
        $this->setStorage($storage ?: new DataContainer());
    }
}

Both implementations contain all methods of DataContainerInterface.

Creating a traversable decorator

A decorator that is also traversable can be created with DataContainerIteratorAggregateTrait.

<?php
use Mediact\DataContainer\DataContainerInterface;
use Mediact\DataContainer\DataContainerDecoratorTrait;
use Mediact\DataContainer\DataContainerIteratorAggregateTrait;

class FooTraversableDataContainer implements DataContainerInterface, IteratorAggregate
{
    use DataContainerDecoratorTrait;
    use DataContainerIteratorAggregateTrait;

    public function __construct(array $data = [])
    {
        $this->setData($data);
    }
}

Filtering a container

To filter a container, an implementation of DataContainerFilterInterface is required.

A default implementation, used for chaining, is available.

<?php
use Mediact\DataContainer\DataContainerFilterInterface;
use Mediact\DataContainer\DataContainerFilterChain;
use Mediact\DataContainer\DataContainerInterface;

/**
 * @var DataContainerFilterInterface $fooFilter
 * @var DataContainerFilterInterface $barFilter
 * @var DataContainerFilterInterface $bazFilter
 * @var DataContainerInterface       $container
 */

$filter = new DataContainerFilterChain(
    $fooFilter,
    $barFilter,
    $bazFilter
);

if ($filter($container)) {
    // Proceed.
    $container->move('foo', 'bar');
}

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