ImageCachePreset.php

<?php

namespace Drupal\image\Plugin\migrate\source\d6;

use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
use Drupal\migrate\Row;

/**
 * Drupal 6 imagecache presets source from database.
 *
 * @MigrateSource(
 *   id = "d6_imagecache_presets",
 *   source_module = "imagecache"
 * )
 */
class ImageCachePreset extends DrupalSqlBase {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        $query = $this->select('imagecache_preset', 'icp')
            ->fields('icp');
        return $query;
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        $fields = [
            'presetid' => $this->t('Preset ID'),
            'presetname' => $this->t('Preset Name'),
        ];
        return $fields;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids['presetid']['type'] = 'integer';
        return $ids;
    }
    
    /**
     * {@inheritdoc}
     */
    public function prepareRow(Row $row) {
        $actions = [];
        $results = $this->select('imagecache_action', 'ica')
            ->fields('ica')
            ->condition('presetid', $row->getSourceProperty('presetid'))
            ->execute();
        foreach ($results as $key => $result) {
            $actions[$key] = $result;
            $actions[$key]['data'] = unserialize($result['data']);
        }
        $row->setSourceProperty('actions', $actions);
        return parent::prepareRow($row);
    }

}