Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\taxonomy;
Chris@0: 
Chris@0: use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
Chris@0: use Drupal\Core\Entity\EntityInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines a Controller class for taxonomy terms.
Chris@0:  */
Chris@0: class TermStorage extends SqlContentEntityStorage implements TermStorageInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of loaded parents keyed by child term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $parents = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of all loaded term ancestry keyed by ancestor term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $parentsAll = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of child terms keyed by parent term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $children = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of term parents keyed by vocabulary ID and child term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $treeParents = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of term ancestors keyed by vocabulary ID and parent term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $treeChildren = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of terms in a tree keyed by vocabulary ID and term ID.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $treeTerms = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Array of loaded trees keyed by a cache id matching tree arguments.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $trees = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    *
Chris@0:    * @param array $values
Chris@0:    *   An array of values to set, keyed by property name. A value for the
Chris@0:    *   vocabulary ID ('vid') is required.
Chris@0:    */
Chris@0:   public function create(array $values = []) {
Chris@0:     // Save new terms with no parents by default.
Chris@0:     if (empty($values['parent'])) {
Chris@0:       $values['parent'] = [0];
Chris@0:     }
Chris@0:     $entity = parent::create($values);
Chris@0:     return $entity;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function resetCache(array $ids = NULL) {
Chris@0:     drupal_static_reset('taxonomy_term_count_nodes');
Chris@0:     $this->parents = [];
Chris@0:     $this->parentsAll = [];
Chris@0:     $this->children = [];
Chris@0:     $this->treeChildren = [];
Chris@0:     $this->treeParents = [];
Chris@0:     $this->treeTerms = [];
Chris@0:     $this->trees = [];
Chris@0:     parent::resetCache($ids);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function deleteTermHierarchy($tids) {
Chris@0:     $this->database->delete('taxonomy_term_hierarchy')
Chris@0:       ->condition('tid', $tids, 'IN')
Chris@0:       ->execute();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function updateTermHierarchy(EntityInterface $term) {
Chris@0:     $query = $this->database->insert('taxonomy_term_hierarchy')
Chris@0:       ->fields(['tid', 'parent']);
Chris@0: 
Chris@0:     foreach ($term->parent as $parent) {
Chris@0:       $query->values([
Chris@0:         'tid' => $term->id(),
Chris@0:         'parent' => (int) $parent->target_id,
Chris@0:       ]);
Chris@0:     }
Chris@0:     $query->execute();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function loadParents($tid) {
Chris@0:     if (!isset($this->parents[$tid])) {
Chris@0:       $parents = [];
Chris@0:       $query = $this->database->select('taxonomy_term_field_data', 't');
Chris@0:       $query->join('taxonomy_term_hierarchy', 'h', 'h.parent = t.tid');
Chris@0:       $query->addField('t', 'tid');
Chris@0:       $query->condition('h.tid', $tid);
Chris@0:       $query->condition('t.default_langcode', 1);
Chris@0:       $query->addTag('taxonomy_term_access');
Chris@0:       $query->orderBy('t.weight');
Chris@0:       $query->orderBy('t.name');
Chris@0:       if ($ids = $query->execute()->fetchCol()) {
Chris@0:         $parents = $this->loadMultiple($ids);
Chris@0:       }
Chris@0:       $this->parents[$tid] = $parents;
Chris@0:     }
Chris@0:     return $this->parents[$tid];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function loadAllParents($tid) {
Chris@0:     if (!isset($this->parentsAll[$tid])) {
Chris@0:       $parents = [];
Chris@0:       if ($term = $this->load($tid)) {
Chris@0:         $parents[$term->id()] = $term;
Chris@0:         $terms_to_search[] = $term->id();
Chris@0: 
Chris@0:         while ($tid = array_shift($terms_to_search)) {
Chris@0:           if ($new_parents = $this->loadParents($tid)) {
Chris@0:             foreach ($new_parents as $new_parent) {
Chris@0:               if (!isset($parents[$new_parent->id()])) {
Chris@0:                 $parents[$new_parent->id()] = $new_parent;
Chris@0:                 $terms_to_search[] = $new_parent->id();
Chris@0:               }
Chris@0:             }
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0: 
Chris@0:       $this->parentsAll[$tid] = $parents;
Chris@0:     }
Chris@0:     return $this->parentsAll[$tid];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function loadChildren($tid, $vid = NULL) {
Chris@0:     if (!isset($this->children[$tid])) {
Chris@0:       $children = [];
Chris@0:       $query = $this->database->select('taxonomy_term_field_data', 't');
Chris@0:       $query->join('taxonomy_term_hierarchy', 'h', 'h.tid = t.tid');
Chris@0:       $query->addField('t', 'tid');
Chris@0:       $query->condition('h.parent', $tid);
Chris@0:       if ($vid) {
Chris@0:         $query->condition('t.vid', $vid);
Chris@0:       }
Chris@0:       $query->condition('t.default_langcode', 1);
Chris@0:       $query->addTag('taxonomy_term_access');
Chris@0:       $query->orderBy('t.weight');
Chris@0:       $query->orderBy('t.name');
Chris@0:       if ($ids = $query->execute()->fetchCol()) {
Chris@0:         $children = $this->loadMultiple($ids);
Chris@0:       }
Chris@0:       $this->children[$tid] = $children;
Chris@0:     }
Chris@0:     return $this->children[$tid];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function loadTree($vid, $parent = 0, $max_depth = NULL, $load_entities = FALSE) {
Chris@0:     $cache_key = implode(':', func_get_args());
Chris@0:     if (!isset($this->trees[$cache_key])) {
Chris@0:       // We cache trees, so it's not CPU-intensive to call on a term and its
Chris@0:       // children, too.
Chris@0:       if (!isset($this->treeChildren[$vid])) {
Chris@0:         $this->treeChildren[$vid] = [];
Chris@0:         $this->treeParents[$vid] = [];
Chris@0:         $this->treeTerms[$vid] = [];
Chris@0:         $query = $this->database->select('taxonomy_term_field_data', 't');
Chris@0:         $query->join('taxonomy_term_hierarchy', 'h', 'h.tid = t.tid');
Chris@0:         $result = $query
Chris@0:           ->addTag('taxonomy_term_access')
Chris@0:           ->fields('t')
Chris@0:           ->fields('h', ['parent'])
Chris@0:           ->condition('t.vid', $vid)
Chris@0:           ->condition('t.default_langcode', 1)
Chris@0:           ->orderBy('t.weight')
Chris@0:           ->orderBy('t.name')
Chris@0:           ->execute();
Chris@0:         foreach ($result as $term) {
Chris@0:           $this->treeChildren[$vid][$term->parent][] = $term->tid;
Chris@0:           $this->treeParents[$vid][$term->tid][] = $term->parent;
Chris@0:           $this->treeTerms[$vid][$term->tid] = $term;
Chris@0:         }
Chris@0:       }
Chris@0: 
Chris@0:       // Load full entities, if necessary. The entity controller statically
Chris@0:       // caches the results.
Chris@0:       $term_entities = [];
Chris@0:       if ($load_entities) {
Chris@0:         $term_entities = $this->loadMultiple(array_keys($this->treeTerms[$vid]));
Chris@0:       }
Chris@0: 
Chris@0:       $max_depth = (!isset($max_depth)) ? count($this->treeChildren[$vid]) : $max_depth;
Chris@0:       $tree = [];
Chris@0: 
Chris@0:       // Keeps track of the parents we have to process, the last entry is used
Chris@0:       // for the next processing step.
Chris@0:       $process_parents = [];
Chris@0:       $process_parents[] = $parent;
Chris@0: 
Chris@0:       // Loops over the parent terms and adds its children to the tree array.
Chris@0:       // Uses a loop instead of a recursion, because it's more efficient.
Chris@0:       while (count($process_parents)) {
Chris@0:         $parent = array_pop($process_parents);
Chris@0:         // The number of parents determines the current depth.
Chris@0:         $depth = count($process_parents);
Chris@0:         if ($max_depth > $depth && !empty($this->treeChildren[$vid][$parent])) {
Chris@0:           $has_children = FALSE;
Chris@0:           $child = current($this->treeChildren[$vid][$parent]);
Chris@0:           do {
Chris@0:             if (empty($child)) {
Chris@0:               break;
Chris@0:             }
Chris@0:             $term = $load_entities ? $term_entities[$child] : $this->treeTerms[$vid][$child];
Chris@0:             if (isset($this->treeParents[$vid][$load_entities ? $term->id() : $term->tid])) {
Chris@0:               // Clone the term so that the depth attribute remains correct
Chris@0:               // in the event of multiple parents.
Chris@0:               $term = clone $term;
Chris@0:             }
Chris@0:             $term->depth = $depth;
Chris@0:             unset($term->parent);
Chris@0:             $tid = $load_entities ? $term->id() : $term->tid;
Chris@0:             $term->parents = $this->treeParents[$vid][$tid];
Chris@0:             $tree[] = $term;
Chris@0:             if (!empty($this->treeChildren[$vid][$tid])) {
Chris@0:               $has_children = TRUE;
Chris@0: 
Chris@0:               // We have to continue with this parent later.
Chris@0:               $process_parents[] = $parent;
Chris@0:               // Use the current term as parent for the next iteration.
Chris@0:               $process_parents[] = $tid;
Chris@0: 
Chris@0:               // Reset pointers for child lists because we step in there more
Chris@0:               // often with multi parents.
Chris@0:               reset($this->treeChildren[$vid][$tid]);
Chris@0:               // Move pointer so that we get the correct term the next time.
Chris@0:               next($this->treeChildren[$vid][$parent]);
Chris@0:               break;
Chris@0:             }
Chris@0:           } while ($child = next($this->treeChildren[$vid][$parent]));
Chris@0: 
Chris@0:           if (!$has_children) {
Chris@0:             // We processed all terms in this hierarchy-level, reset pointer
Chris@0:             // so that this function works the next time it gets called.
Chris@0:             reset($this->treeChildren[$vid][$parent]);
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0:       $this->trees[$cache_key] = $tree;
Chris@0:     }
Chris@0:     return $this->trees[$cache_key];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function nodeCount($vid) {
Chris@0:     $query = $this->database->select('taxonomy_index', 'ti');
Chris@0:     $query->addExpression('COUNT(DISTINCT ti.nid)');
Chris@0:     $query->leftJoin('taxonomy_term_data', 'td', 'ti.tid = td.tid');
Chris@0:     $query->condition('td.vid', $vid);
Chris@0:     $query->addTag('vocabulary_node_count');
Chris@0:     return $query->execute()->fetchField();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function resetWeights($vid) {
Chris@0:     $this->database->update('taxonomy_term_field_data')
Chris@0:       ->fields(['weight' => 0])
Chris@0:       ->condition('vid', $vid)
Chris@0:       ->execute();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getNodeTerms(array $nids, array $vocabs = [], $langcode = NULL) {
Chris@0:     $query = db_select('taxonomy_term_field_data', 'td');
Chris@0:     $query->innerJoin('taxonomy_index', 'tn', 'td.tid = tn.tid');
Chris@0:     $query->fields('td', ['tid']);
Chris@0:     $query->addField('tn', 'nid', 'node_nid');
Chris@0:     $query->orderby('td.weight');
Chris@0:     $query->orderby('td.name');
Chris@0:     $query->condition('tn.nid', $nids, 'IN');
Chris@0:     $query->addTag('taxonomy_term_access');
Chris@0:     if (!empty($vocabs)) {
Chris@0:       $query->condition('td.vid', $vocabs, 'IN');
Chris@0:     }
Chris@0:     if (!empty($langcode)) {
Chris@0:       $query->condition('td.langcode', $langcode);
Chris@0:     }
Chris@0: 
Chris@0:     $results = [];
Chris@0:     $all_tids = [];
Chris@0:     foreach ($query->execute() as $term_record) {
Chris@0:       $results[$term_record->node_nid][] = $term_record->tid;
Chris@0:       $all_tids[] = $term_record->tid;
Chris@0:     }
Chris@0: 
Chris@0:     $all_terms = $this->loadMultiple($all_tids);
Chris@0:     $terms = [];
Chris@0:     foreach ($results as $nid => $tids) {
Chris@0:       foreach ($tids as $tid) {
Chris@0:         $terms[$nid][$tid] = $all_terms[$tid];
Chris@0:       }
Chris@0:     }
Chris@0:     return $terms;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function __sleep() {
Chris@0:     $vars = parent::__sleep();
Chris@0:     // Do not serialize static cache.
Chris@0:     unset($vars['parents'], $vars['parentsAll'], $vars['children'], $vars['treeChildren'], $vars['treeParents'], $vars['treeTerms'], $vars['trees']);
Chris@0:     return $vars;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function __wakeup() {
Chris@0:     parent::__wakeup();
Chris@0:     // Initialize static caches.
Chris@0:     $this->parents = [];
Chris@0:     $this->parentsAll = [];
Chris@0:     $this->children = [];
Chris@0:     $this->treeChildren = [];
Chris@0:     $this->treeParents = [];
Chris@0:     $this->treeTerms = [];
Chris@0:     $this->trees = [];
Chris@0:   }
Chris@0: 
Chris@0: }