TYPO3 Solr pageIndexer recursive downline / upline enabled

PageIndexer.php

<?php
namespace Vendor\MyExt\Solr\IndexQueue;

use ApacheSolrForTypo3\Solr\IndexQueue\Item;
use ApacheSolrForTypo3\Solr\IndexQueue\PageIndexer as SolrPageIndexer;

/**
 * Override PageIndexer class
 */
class PageIndexer extends SolrPageIndexer
{

    /**
     * Checks whether we can index this page.
     *
     * @param Item $item The page we want to index encapsulated in an index queue item
     * @return bool True if we can index this page, FALSE otherwise
     */
    protected function isPageIndexable(Item $item)
    {
        $isIndexable = true;
        $record = $item->getRecord();

        if (isset($GLOBALS['TCA']['pages']['ctrl']['enablecolumns']['disabled'])
            && $record[$GLOBALS['TCA']['pages']['ctrl']['enablecolumns']['disabled']]) {
            $isIndexable = false;
        }

        if ($this->isDisabledRecordInRootline($record['pid'])) {
            $isIndexable = false;
        }

        return $isIndexable;
    }

    /**
     * Check if there's a disabled page in rootline
     *
     * @param int $uid
     *
     * @return bool
     */
    protected function isDisabledRecordInRootline($uid)
    {
        $row = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow(
            'uid,pid,hidden,doktype,nav_hide',
            'pages',
            'uid = ' . $uid
        );
        if (!is_null($row)) {
            if ($row['hidden'] == 1) {
                return true;
            } elseif ($row['nav_hide'] == 1) {
                return true;
            } elseif ($row['doktype'] == 254) {
                return true;
            } else {
                return $this->isDisabledRecordInRootline($row['pid']);
            }
        }
    }
}

PageInitializer.php

<?php
namespace Vendor\MyExt\Solr\IndexQueue\Initializer;

use ApacheSolrForTypo3\Solr\IndexQueue\Initializer\Page as SolrPage;

/**
 * Extend solr page initializer to exclude recusive
 */
class Page extends SolrPage
{
    /**
     * Initializes Index Queue page items for a site. Includes regular pages
     * and mounted pages - no nested mount page structures though.
     *
     * @return bool TRUE if initialization was successful, FALSE on error.
     */
    public function initialize()
    {
        $pagesInitialized = parent::initialize();

        $deleteClause = 'item_type = "' . $this->type . '" AND ' . $this->buildDisabledPageClause();
        $GLOBALS['TYPO3_DB']->exec_DELETEquery('tx_solr_indexqueue_item', $deleteClause);
        return $pagesInitialized;
    }

    /**
     * @return string
     */
    protected function buildDisabledPageClause()
    {
        $whereClause = '';
        $disabledPages = [];

        $rows = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
            'uid',
            'pages',
            '(hidden = 1 OR nav_hide = 1 OR doktype = 254) AND deleted = 0'
        );
        if (is_array($rows)) {
            foreach ($rows as $row) {
                $disabledPages[] = $row['uid'];
            }

            $disabledPages = $this->getAllChildren($disabledPages);

            if (!empty($disabledPages)) {
                $whereClause = 'item_uid IN (' . implode(',', $disabledPages) . ')';
            } else {
                $whereClause = '1=1';
            }
        }
        return $whereClause;
    }

    /**
     * Get all chrildren from given uids
     *
     * @param array $pageIds
     * @return array
     */
    protected function getAllChildren($pageIds)
    {
        $childPages = [];
        $childRows = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
            'uid',
            'pages',
            'deleted = 0 AND pid IN (' . implode(',', $pageIds) . ')'
        );
        if (count($childRows) > 0) {
            foreach ($childRows as $row) {
                $childPages[] = $row['uid'];
            }
            $childPages = $this->getAllChildren($childPages);
        }
        return array_merge($pageIds, $childPages);
    }
}

solr_page_recursive.ts

plugin.tx_solr.index.queue.pages {
	# Excludes disabled trees recursively
	initialization = \Vendor\MyExt\Solr\IndexQueue\Initializer\PageInitializer
	indexer = \Vendor\MyExt\Solr\IndexQueue\PageIndexer
}