How does \Magento\Catalog\Model\Product::getTypeInstance() work?

dmitry_fedyuk · April 30, 2016, 2:20pm

Context:

magento/magento2/blob/958164/app/code/Magento/Catalog/Model/Product.php#L646-L658


/**
 * Retrieve type instance of the product.
 * Type instance implements product type depended logic and is a singleton shared by all products of the same type.
 *
 * @return \Magento\Catalog\Model\Product\Type\AbstractType
 */
public function getTypeInstance()
{
    if ($this->_typeInstance === null) {
        $this->_typeInstance = $this->_catalogProductType->factory($this);
    }
    return $this->_typeInstance;
}

Details: How does \Magento\Catalog\Model\Product\Type::factory() work?