taxonomy.inc in Drupal-to-Drupal data migration 7.2

Implementation of DrupalTermMigration for Drupal 5 sources.

File

d5/taxonomy.inc

<?php

/**
 * @file
 * Implementation of DrupalTermMigration for Drupal 5 sources.
 */

/**
 * Handling specific to a Drupal 5 source for taxonomy terms.
 */
class DrupalTerm5Migration extends DrupalTermMigration {
  public function __construct(array $arguments) {
    $this->sourceFields['parent'] = t('Term: Parent term');
    parent::__construct($arguments);

    // Drupal 5 had no format for terms.
    $this
      ->addFieldMapping('format');
  }

  /**
   * Implementation of DrupalTermMigration::query().
   *
   * @return SelectQueryInterface
   */
  protected function query() {

    // Note the explode - this supports the (admittedly unusual) case of
    // consolidating multiple vocabularies into one.
    $query = Database::getConnection('default', $this->sourceConnection)
      ->select('term_data', 'td')
      ->fields('td', array(
      'tid',
      'name',
      'description',
      'weight',
    ))
      ->condition('vid', explode(',', $this->sourceVocabulary), 'IN')
      ->orderBy('th.parent')
      ->distinct();

    // Join to the hierarchy so we can sort on parent, but we'll pull the
    // actual parent values in separately in case there are multiples.
    $query
      ->leftJoin('term_hierarchy', 'th', 'td.tid=th.tid');
    return $query;
  }

  /**
   * Implementation of Migration::prepareRow().
   *
   * @param $row
   */
  public function prepareRow($row) {
    if (parent::prepareRow($row) === FALSE) {
      return FALSE;
    }

    // Add the (potentially multiple) parents
    $result = Database::getConnection('default', $this->sourceConnection)
      ->select('term_hierarchy', 'th')
      ->fields('th', array(
      'parent',
    ))
      ->condition('tid', $row->tid)
      ->execute();
    foreach ($result as $parent_row) {
      $row->parent[] = $parent_row->parent;
    }
  }

}

Classes

Name	Description
DrupalTerm5Migration	Handling specific to a Drupal 5 source for taxonomy terms.