islandora/includes/IslandoraTuque.inc

<?php

/**
 * @file
 *
 * This file contains a class to include the Tuque php library.
 */

class IslandoraTuque {

  /**
   * Connection to the repository
   *
   * @var RepositoryConnection
   */
  public $connection = NULL;

  /**
   * The Fedora API we are using
   *
   * @var FedoraAPI
   */
  public $api = NULL;

  /**
   * The cache we use to connect.
   *
   * @var SimpleCache
   */
  public $cache = NULL;

  /**
   * The repository object.
   *
   * @var FedoraRepository
   */
  public $repository = NULL;

  function __construct($user = NULL, $url = NULL) {
    if (!isset($user)) {
      global $user;
    }

    if (!isset($user) || $user->uid == 0) {
      $user_string = 'anonymous';
      $pass_string = 'anonymous';
    }
    else {
      $user_string = $user->name;
      $pass_string = $user->pass;
    }

    if (!isset($url)) {
      $url = variable_get('islandora_base_url', 'http://localhost:8080/fedora');
    }

    if (self::exists()) {
      $this->connection = new RepositoryConnection($url, $user_string, $pass_string);
      $this->connection->reuseConnection = TRUE;
      $this->api = new FedoraApi($this->connection);
      $this->cache = new SimpleCache();
      $this->repository = new FedoraRepository($this->api, $this->cache);
    }
  }

  static function exists() {
    return class_exists('RepositoryConnection');
  }

  static function getError() {
    $islandora_doc_link = l(t('Islandora documentation'), 'https://wiki.duraspace.org/display/ISLANDORA/Islandora');
    $tuque_link = l(t('Tuque Fedora API'), 'http://github.com/islandora/tuque');
    $message = t('Islandora requires the !tuque_url. Please install in /sites/all/libraries/tuque before continuing. See the !islandora_url.', array( '!tuque_url' => $tuque_link, '!islandora_url' => $islandora_doc_link));
    drupal_set_message(filter_xss($message), 'error', FALSE);
  }
}

/**
 * Just a wrapper around fetchings the IslandoraTuque object, with some very
 *  basic error logging.
 *
 * @return IslandoraTuque
 *   A IslandoraTuque instance
 */
function islandora_get_tuque_connection() {
  $tuque = &drupal_static(__FUNCTION__);
  if (!$tuque) {
    try {
      $tuque = new IslandoraTuque();
    } catch (Exception $e) {
      drupal_set_message(t('Unable to connect to the repository %e', array('%e' => $e)), 'error');
    }
  }
  return $tuque;
}