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//home/develito/httpdocs/libraries/eshiol/J2xml/Table/Field.php

<?php
/**
 * @package		J2XML
 * @subpackage	lib_j2xml
 *
 * @author		Helios Ciancio <info (at) eshiol (dot) it>
 * @link		https://www.eshiol.it
 * @copyright	Copyright (C) 2010 - 2020 Helios Ciancio. All Rights Reserved
 * @license		http://www.gnu.org/licenses/gpl-3.0.html GNU/GPL v3
 * J2XML is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */
namespace eshiol\J2xml\Table;
defined('JPATH_PLATFORM') or die();

use eshiol\J2xml\Table\Category;
use eshiol\J2xml\Table\Fieldgroup;
use eshiol\J2xml\Table\Table;
// use Joomla\Component\Fields\Administrator\Table\FieldTable;
\JLoader::import('eshiol.J2xml.Table.Category');
\JLoader::import('eshiol.J2xml.Table.Fieldgroup');
\JLoader::import('eshiol.J2xml.Table.Table');

/**
 * Field table
 *
 * @version 20.5.348
 * @since 17.6.299
 */
class Field extends Table
{

/**
	 * Constructor
	 *
	 * @param \JDatabaseDriver $db
	 *        	A database connector object
	 *
	 * @since 17.6.299
	 */
	public function __construct (\JDatabaseDriver $db)
	{
		parent::__construct('#__fields', 'id', $db);
	}

/**
	 *
	 * {@inheritdoc}
	 * @see Table::toXML()
	 */
	function toXML ($mapKeysToText = false)
	{
		$this->_excluded = array_merge($this->_excluded, array(
				'group_id'
		));

if ($this->group_id)
		{
			// $this->_aliases['group'] = 'SELECT title FROM #__fields_groups
			// WHERE id = '. (int)$this->group_id;
			$this->_aliases['group'] = (string) $this->_db->getQuery(true)
				->select($this->_db->quoteName('title'))
				->from($this->_db->quoteName('#__fields_groups'))
				->where($this->_db->quoteName('id') . ' = ' . (int) $this->group_id);
		}

// $this->_aliases['category'] = 'SELECT c.path FROM #__categories c,
		// #__fields_categories fc WHERE c.id = fc.category_id AND fc.field_id
		// ='.(int)$this->id;
		$this->_aliases['category'] = (string) $this->_db->getQuery(true)
			->select($this->_db->quoteName('c.path'))
			->from($this->_db->quoteName('#__categories', 'c'))
			->from($this->_db->quoteName('#__fields_categories', 'fc'))
			->where($this->_db->quoteName('c.id') . ' = ' . $this->_db->quoteName('fc.category_id'))
			->where($this->_db->quoteName('fc.field_id') . ' = ' . (int) $this->id);

return parent::_serialize();
	}

/**
	 * Import data
	 *
	 * @param \SimpleXMLElement $xml
	 *        	xml
	 * @param \JRegistry $params
	 *        	@option int 'fields' 0: No | 1: Yes, if not exists | 2: Yes,
	 *        	overwrite if exists
	 *        	@option string 'context'
	 *
	 * @throws
	 * @return void
	 * @access public
	 *
	 * @since 18.8.310
	 */
	public static function import ($xml, &$params)
	{
		$import_fields = $params->get('fields', 0);
		if ($import_fields == 0)
			return;

$context = $params->get('context');
		$db = \JFactory::getDBO();
		$nullDate = $db->getNullDate();
		$userid = \JFactory::getUser()->id;

foreach ($xml->xpath("//j2xml/field") as $record)
		{
			self::prepareData($record, $data, $params);

$field = $db->setQuery(
				$db->getQuery(true)
					->select($db->quoteName('id'))
					->select($db->quoteName('name'))
					->from($db->quoteName('#__fields'))
					->where($db->quoteName('context') . ' = ' . $db->quote($data['context']))
					->where($db->quoteName('name') . ' = ' . $db->quote($data['name'])))
			->loadObject();

if (! $field || ($import_fields == 2))
			{
				\JLoader::register('FieldTable', JPATH_ADMINISTRATOR . '/components/com_fields/Table/FieldTable.php');
				if (class_exists('\Joomla\Component\Fields\Administrator\Table\FieldTable'))
				{
					$table = new FieldTable($db);
				}
				else
				{ // Joomla! 4
					\JTable::addIncludePath(JPATH_ADMINISTRATOR . '/components/com_fields/tables');
					$table = \JTable::getInstance('Field', 'FieldsTable');
				}

if (! $field)
				{ // new field
					$data['id'] = null;
				}
				else
				{ // field already exists
					$data['id'] = $field->id;
					$table->load($data['id']);
				}

// TODO: Trigger the onContentBeforeSave event.
				$table->bind($data);
				if ($table->store())
				{
					\JLog::add(new \JLogEntry(\JText::sprintf('LIB_J2XML_MSG_FIELD_IMPORTED', $table->title), \JLog::INFO, 'lib_j2xml'));
					// TODO: Trigger the onContentAfterSave event.
				}
				else
				{
					\JLog::add(
							new \JLogEntry(\JText::sprintf('LIB_J2XML_MSG_FIELD_NOT_IMPORTED', $data['title'], $table->getError()), \JLog::ERROR,
									'lib_j2xml'));
				}
				$table = null;
			}
		}
	}

/**
	 *
	 * {@inheritdoc}
	 * @see Table::prepareData()
	 */
	public static function prepareData ($record, &$data, $params)
	{
		$params->set('extension', 'com_fields');
		parent::prepareData($record, $data, $params);

if (! isset($data['description']))
		{
			$data['description'] = '';
		}

if (isset($data['modified_time']) && ($data['modified_time'] != \JFactory::getDbo()->getNullDate()))
		{
			$data['modified_time'] = self::fixdate($data['modified_time']);
		}
	}

/**
	 * Export data
	 *
	 * @param int $id
	 *        	the id of the item to be exported
	 * @param \SimpleXMLElement $xml
	 *        	xml
	 * @param array $options
	 *
	 * @throws
	 * @return void
	 * @access public
	 *
	 * @since 18.8.310
	 */
	public static function export ($id, &$xml, $options)
	{
		if ($xml->xpath("//j2xml/field/id[text() = '" . $id . "']"))
		{
			return;
		}

$db = \JFactory::getDbo();
		$item = new Field($db);
		if (! $item->load($id))
		{
			return;
		}

$doc = dom_import_simplexml($xml)->ownerDocument;
		$fragment = $doc->createDocumentFragment();

$fragment->appendXML($item->toXML());
		$doc->documentElement->appendChild($fragment);

if ($item->group_id)
		{
			Fieldgroup::export($item->group_id, $xml, $options);
		}

if ($options['users'])
		{
			if ($item->created_user_id)
			{
				User::export($item->created_user_id, $xml, $options);
			}
			if ($item->modified_by)
			{
				User::export($item->modified_by, $xml, $options);
			}
		}

if ($options['categories'])
		{
			$query = $db->getQuery(true)
				->select('category_id')
				->from('#__fields_categories')
				->where('field_id = ' . $id);
			$db->setQuery($query);

$ids_category = $db->loadColumn();
			foreach ($ids_category as $id_category)
			{
				Category::export($id_category, $xml, $options);
			}
		}
	}
}