<?php

namespace Drupal\sample_migration\Plugin\migrate\source;

use Drupal\migrate\Plugin\migrate\source\SqlBase;
use Drupal\migrate\Row;

/**
 * Provides a 'Random Database' migrate source.
 *
 * @MigrateSource(
 *  id = "RandomDatabases"
 * )
 */
class RandomDatabases extends SqlBase {

  /**
   * {@inheritdoc}
   */
  public function query() {
    $query = $this->select('Content', 'c');
    $query->fields('c', [
      'ID',
      'Title',
      'Body',
    ]);
    return $query;
  }

  /**
   * {@inheritdoc}
   */
  public function fields() {
    $fields = [
      'ID' => $this->t('Source ID'),
      'Title' => $this->t('Title'),
      'Body' => $this->t('Body'),
    ];
    return $fields;
  }

  /**
   * {@inheritdoc}
   */
  public function getIds() {
    return [
      'ID' => [
        'type' => 'integer',
        'alias'=> 'ID'
      ]
    ];
  }

}