Jkphl\RdfaLiteMicrodata\Infrastructure\Parser\MicrodataElementProcessor

Complexity

Total Complexity

15

Size/Duplication

Total Lines	98
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

100%

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	processElement()	0	5	1
A	processProperty()	0	8	3
B	processChild()	0	18	5
A	getResourceId()	0	4	2
A	getPropertyValue()	0	10	3
A	getVocabulary()	0	4	1

<?php

/**
 * rdfa-lite-microdata
 *
 * @category Jkphl
 * @package Jkphl\RdfaLiteMicrodata
 * @subpackage Jkphl\RdfaLiteMicrodata\Infrastructure
 * @author Joschi Kuphal <joschi@tollwerk.de> / @jkphl
 * @copyright Copyright © 2017 Joschi Kuphal <joschi@tollwerk.de> / @jkphl
 * @license http://opensource.org/licenses/MIT The MIT License (MIT)
 */

/***********************************************************************************
 *  The MIT License (MIT)
 *
 *  Copyright © 2017 Joschi Kuphal <joschi@kuphal.net> / @jkphl
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy of
 *  this software and associated documentation files (the "Software"), to deal in
 *  the Software without restriction, including without limitation the rights to
 *  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 *  the Software, and to permit persons to whom the Software is furnished to do so,
 *  subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 *  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 *  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ***********************************************************************************/

namespace Jkphl\RdfaLiteMicrodata\Infrastructure\Parser;

use Jkphl\RdfaLiteMicrodata\Application\Context\ContextInterface;
use Jkphl\RdfaLiteMicrodata\Application\Parser\RootThing;
use Jkphl\RdfaLiteMicrodata\Domain\Thing\ThingInterface;
use Jkphl\RdfaLiteMicrodata\Domain\Vocabulary\VocabularyInterface;

/**
 * Microdata element processor
 *
 * @package Jkphl\RdfaLiteMicrodata
 * @subpackage Jkphl\RdfaLiteMicrodata\Infrastructure
 */
class MicrodataElementProcessor extends AbstractElementProcessor
{
    /**
     * Process a DOM element
     *
     * @param \DOMElement $element DOM element
     * @param ContextInterface $context Inherited Context
     * @return ContextInterface Local context for this element
     */
    public function processElement(\DOMElement $element, ContextInterface $context)
    {
        // Create a property
        return $this->processProperty($element, $context);
    }

    /**
     * Create a property
     *
     * @param \DOMElement $element DOM element
     * @param ContextInterface $context Inherited Context
     * @return ContextInterface Local context for this element
     */
    protected function processProperty(\DOMElement $element, ContextInterface $context)
    {
        if ($element->hasAttribute('itemprop') && !($context->getParentThing() instanceof RootThing)) {
            $context = $this->processPropertyPrefixName(null, $element->getAttribute('itemprop'), $element, $context);
        }

        return $context;
    }

    /**
     * Create a nested child
     *
     * @param \DOMElement $element DOM element
     * @param ContextInterface $context Context
     * @return ContextInterface Context for children
     */
    protected function processChild(\DOMElement $element, ContextInterface $context)
    {
        if ($element->hasAttribute('itemtype')
            && (empty($element->getAttribute('itemprop')) || $context->getParentThing() instanceof RootThing)
        ) {
            $thing = $this->getThing(
                $element->getAttribute('itemtype'),
                trim($element->getAttribute('itemid')) ?: null,
                $context
            );

            // Add the new thing as a child to the current context
            // and set the thing as parent thing for nested iterations
            $context = $context->addChild($thing)->setParentThing($thing);
        }

        return $context;
    }

    /**
     * Return the resource ID
     *
     * @param \DOMElement $element DOM element
     * @return string|null Resource ID
     */
    protected function getResourceId(\DOMElement $element)
    {
        return trim($element->getAttribute('itemid')) ?: null;
    }

    /**
     * Return a property value (type and tag name dependent)
     *
     * @param \DOMElement $element DOM element
     * @param ContextInterface $context Context
     * @return ThingInterface|string Property value
     */
    protected function getPropertyValue(\DOMElement $element, ContextInterface $context)
    {
        // If the property creates a new type: Return the element itself
        if ($element->hasAttribute('itemscope') && $element->hasAttribute('itemtype')) {
            return $this->getThing($element->getAttribute('itemtype'), null, $context);
        }

        // Return a string property value
        return $this->getPropertyStringValue($element);
    }

    /**
     * Return a vocabulary by prefix with fallback to the default vocabulary
     *
     * @param string $prefix Vocabulary prefix
     * @param ContextInterface $context Context
     * @return VocabularyInterface Vocabulary
     */
    protected function getVocabulary($prefix, ContextInterface $context)
    {
        return $context->getDefaultVocabulary();
    }
}