PubObjectCache.inc.php

<?php
 
class PubObjectCache {
   /* @var array */
   var $_objectCache = array();
 
 
   //
   // Public API
   //
   function add($object, $parent) {
      if (is_a($object, 'Submission')) {
         $this->_insertInternally($object, 'articles', $object->getId());
      }
      if (is_a($object, 'ArticleGalley')) {
         assert(is_a($parent, 'Submission'));
         $this->_insertInternally($object, 'galleys', $object->getId());
         $this->_insertInternally($object, 'galleysByArticle', $object->getSubmissionId(), $object->getId());
      }
   }
 
   function markComplete($cacheId, $objectId) {
      assert(is_array($this->_objectCache[$cacheId][$objectId]));
      $this->_objectCache[$cacheId][$objectId]['complete'] = true;
 
      // Order objects in the completed cache by ID.
      ksort($this->_objectCache[$cacheId][$objectId]);
   }
 
   function get($cacheId, $id1, $id2 = null) {
      assert($this->isCached($cacheId, $id1, $id2));
      if (is_null($id2)) {
         $returner = $this->_objectCache[$cacheId][$id1];
         if (is_array($returner)) unset($returner['complete']);
         return $returner;
      } else {
         return $this->_objectCache[$cacheId][$id1][$id2];
      }
   }
 
   function isCached($cacheId, $id1, $id2 = null) {
      if (!isset($this->_objectCache[$cacheId])) return false;
 
      $id1 = (int)$id1;
      if (is_null($id2)) {
         if (!isset($this->_objectCache[$cacheId][$id1])) return false;
         if (is_array($this->_objectCache[$cacheId][$id1])) {
            return isset($this->_objectCache[$cacheId][$id1]['complete']);
         } else {
            return true;
         }
      } else {
         $id2 = (int)$id2;
         return isset($this->_objectCache[$cacheId][$id1][$id2]);
      }
   }
 
 
   //
   // Private helper methods
   //
   function _insertInternally($object, $cacheId, $id1, $id2 = null) {
      if ($this->isCached($cacheId, $id1, $id2)) return;
 
      if (!isset($this->_objectCache[$cacheId])) {
         $this->_objectCache[$cacheId] = array();
      }
 
      $id1 = (int)$id1;
      if (is_null($id2)) {
         $this->_objectCache[$cacheId][$id1] = $object;
      } else {
         $id2 = (int)$id2;
         if (!isset($this->_objectCache[$cacheId][$id1])) {
            $this->_objectCache[$cacheId][$id1] = array();
         }
         $this->_objectCache[$cacheId][$id1][$id2] = $object;
      }
   }
}