<?php
/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Catalog\Model\ResourceModel\Category\Attribute;

/**
 * Catalog category EAV additional attribute resource collection
 *
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Collection extends \Magento\Eav\Model\ResourceModel\Entity\Attribute\Collection
{
    /**
     * Entity factory
     *
     * @var \Magento\Eav\Model\EntityFactory
     */
    protected $_eavEntityFactory;

    /**
     * @param \Magento\Framework\Data\Collection\EntityFactory $entityFactory
     * @param \Psr\Log\LoggerInterface $logger
     * @param \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy
     * @param \Magento\Framework\Event\ManagerInterface $eventManager
     * @param \Magento\Eav\Model\EntityFactory $eavEntityFactory
     * @param \Magento\Eav\Model\Config $eavConfig
     * @param \Magento\Framework\DB\Adapter\AdapterInterface $connection
     * @param \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource
     */
    public function __construct(
        \Magento\Framework\Data\Collection\EntityFactory $entityFactory,
        \Psr\Log\LoggerInterface $logger,
        \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy,
        \Magento\Framework\Event\ManagerInterface $eventManager,
        \Magento\Eav\Model\Config $eavConfig,
        \Magento\Eav\Model\EntityFactory $eavEntityFactory,
        \Magento\Framework\DB\Adapter\AdapterInterface $connection = null,
        \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource = null
    ) {
        $this->_eavEntityFactory = $eavEntityFactory;
        parent::__construct($entityFactory, $logger, $fetchStrategy, $eventManager, $eavConfig, $connection, $resource);
    }

    /**
     * Main select object initialization.
     * Joins catalog/eav_attribute table
     *
     * @return $this
     */
    protected function _initSelect()
    {
        $this->getSelect()->from(
            ['main_table' => $this->getResource()->getMainTable()]
        )->where(
            'main_table.entity_type_id=?',
            $this->_eavEntityFactory->create()->setType(\Magento\Catalog\Model\Category::ENTITY)->getTypeId()
        )->join(
            ['additional_table' => $this->getTable('catalog_eav_attribute')],
            'additional_table.attribute_id = main_table.attribute_id'
        );
        return $this;
    }

    /**
     * Specify attribute entity type filter
     *
     * @param int $typeId
     * @return $this
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    public function setEntityTypeFilter($typeId)
    {
        return $this;
    }
}
