예제 #1
0
 private static function processUploadInternal($userID, SimpleXMLElement $xml, $syncQueueID = null, $syncProcessID = null)
 {
     $userLibraryID = Zotero_Users::getLibraryIDFromUserID($userID);
     $affectedLibraries = self::parseAffectedLibraries($xml->asXML());
     // Relations-only uploads don't have affected libraries
     if (!$affectedLibraries) {
         $affectedLibraries = array(Zotero_Users::getLibraryIDFromUserID($userID));
     }
     $processID = self::addUploadProcess($userID, $affectedLibraries, $syncQueueID, $syncProcessID);
     set_time_limit(5400);
     $profile = false;
     if ($profile) {
         $shardID = Zotero_Shards::getByUserID($userID);
         Zotero_DB::profileStart($shardID);
     }
     try {
         Zotero_DB::beginTransaction();
         // Mark libraries as updated
         foreach ($affectedLibraries as $libraryID) {
             Zotero_Libraries::updateVersion($libraryID);
         }
         $timestamp = Zotero_Libraries::updateTimestamps($affectedLibraries);
         Zotero_DB::registerTransactionTimestamp($timestamp);
         // Make sure no other upload sessions use this same timestamp
         // for any of these libraries, since we return >= 1 as the next
         // last sync time
         if (!Zotero_Libraries::setTimestampLock($affectedLibraries, $timestamp)) {
             throw new Exception("Library timestamp already used", Z_ERROR_LIBRARY_TIMESTAMP_ALREADY_USED);
         }
         $modifiedItems = array();
         // Add/update creators
         if ($xml->creators) {
             // DOM
             $keys = array();
             $xmlElements = dom_import_simplexml($xml->creators);
             $xmlElements = $xmlElements->getElementsByTagName('creator');
             Zotero_DB::query("SET foreign_key_checks = 0");
             try {
                 $addedLibraryIDs = array();
                 $addedCreatorDataHashes = array();
                 foreach ($xmlElements as $xmlElement) {
                     $key = $xmlElement->getAttribute('key');
                     if (isset($keys[$key])) {
                         throw new Exception("Creator {$key} already processed");
                     }
                     $keys[$key] = true;
                     $creatorObj = Zotero_Creators::convertXMLToCreator($xmlElement);
                     if (Zotero_Utilities::unicodeTrim($creatorObj->firstName) === '' && Zotero_Utilities::unicodeTrim($creatorObj->lastName) === '') {
                         continue;
                     }
                     $addedLibraryIDs[] = $creatorObj->libraryID;
                     $changed = $creatorObj->save($userID);
                     // If the creator changed, we need to update all linked items
                     if ($changed) {
                         $modifiedItems = array_merge($modifiedItems, $creatorObj->getLinkedItems());
                     }
                 }
             } catch (Exception $e) {
                 Zotero_DB::query("SET foreign_key_checks = 1");
                 throw $e;
             }
             Zotero_DB::query("SET foreign_key_checks = 1");
             unset($keys);
             unset($xml->creators);
             //
             // Manual foreign key checks
             //
             // libraryID
             foreach (array_unique($addedLibraryIDs) as $addedLibraryID) {
                 $shardID = Zotero_Shards::getByLibraryID($addedLibraryID);
                 $sql = "SELECT COUNT(*) FROM shardLibraries WHERE libraryID=?";
                 if (!Zotero_DB::valueQuery($sql, $addedLibraryID, $shardID)) {
                     throw new Exception("libraryID inserted into `creators` not found in `shardLibraries` ({$addedLibraryID}, {$shardID})");
                 }
             }
         }
         // Add/update items
         $savedItems = array();
         if ($xml->items) {
             $childItems = array();
             // DOM
             $xmlElements = dom_import_simplexml($xml->items);
             $xmlElements = $xmlElements->getElementsByTagName('item');
             foreach ($xmlElements as $xmlElement) {
                 $libraryID = (int) $xmlElement->getAttribute('libraryID');
                 $key = $xmlElement->getAttribute('key');
                 if (isset($savedItems[$libraryID . "/" . $key])) {
                     throw new Exception("Item {$libraryID}/{$key} already processed");
                 }
                 $itemObj = Zotero_Items::convertXMLToItem($xmlElement);
                 if (!$itemObj->getSourceKey()) {
                     try {
                         $modified = $itemObj->save($userID);
                         if ($modified) {
                             $savedItems[$libraryID . "/" . $key] = true;
                         }
                     } catch (Exception $e) {
                         if (strpos($e->getMessage(), 'libraryIDs_do_not_match') !== false) {
                             throw new Exception($e->getMessage() . " ({$key})");
                         }
                         throw $e;
                     }
                 } else {
                     $childItems[] = $itemObj;
                 }
             }
             unset($xml->items);
             while ($childItem = array_shift($childItems)) {
                 $libraryID = $childItem->libraryID;
                 $key = $childItem->key;
                 if (isset($savedItems[$libraryID . "/" . $key])) {
                     throw new Exception("Item {$libraryID}/{$key} already processed");
                 }
                 $modified = $childItem->save($userID);
                 if ($modified) {
                     $savedItems[$libraryID . "/" . $key] = true;
                 }
             }
         }
         // Add/update collections
         if ($xml->collections) {
             $collections = array();
             $collectionSets = array();
             // DOM
             // Build an array of unsaved collection objects and the keys of child items
             $keys = array();
             $xmlElements = dom_import_simplexml($xml->collections);
             $xmlElements = $xmlElements->getElementsByTagName('collection');
             foreach ($xmlElements as $xmlElement) {
                 $key = $xmlElement->getAttribute('key');
                 if (isset($keys[$key])) {
                     throw new Exception("Collection {$key} already processed");
                 }
                 $keys[$key] = true;
                 $collectionObj = Zotero_Collections::convertXMLToCollection($xmlElement);
                 $xmlItems = $xmlElement->getElementsByTagName('items')->item(0);
                 // Fix an error if there's leading or trailing whitespace,
                 // which was possible in 2.0.3
                 if ($xmlItems) {
                     $xmlItems = trim($xmlItems->nodeValue);
                 }
                 $arr = array('obj' => $collectionObj, 'items' => $xmlItems ? explode(' ', $xmlItems) : array());
                 $collections[] = $collectionObj;
                 $collectionSets[] = $arr;
             }
             unset($keys);
             unset($xml->collections);
             self::saveCollections($collections, $userID);
             unset($collections);
             // Set child items
             foreach ($collectionSets as $collection) {
                 // Child items
                 if (isset($collection['items'])) {
                     $ids = array();
                     foreach ($collection['items'] as $key) {
                         $item = Zotero_Items::getByLibraryAndKey($collection['obj']->libraryID, $key);
                         if (!$item) {
                             throw new Exception("Child item '{$key}' of collection {$collection['obj']->id} not found", Z_ERROR_ITEM_NOT_FOUND);
                         }
                         $ids[] = $item->id;
                     }
                     $collection['obj']->setItems($ids);
                 }
             }
             unset($collectionSets);
         }
         // Add/update saved searches
         if ($xml->searches) {
             $searches = array();
             $keys = array();
             foreach ($xml->searches->search as $xmlElement) {
                 $key = (string) $xmlElement['key'];
                 if (isset($keys[$key])) {
                     throw new Exception("Search {$key} already processed");
                 }
                 $keys[$key] = true;
                 $searchObj = Zotero_Searches::convertXMLToSearch($xmlElement);
                 $searchObj->save($userID);
             }
             unset($xml->searches);
         }
         // Add/update tags
         if ($xml->tags) {
             $keys = array();
             // DOM
             $xmlElements = dom_import_simplexml($xml->tags);
             $xmlElements = $xmlElements->getElementsByTagName('tag');
             foreach ($xmlElements as $xmlElement) {
                 // TEMP
                 $tagItems = $xmlElement->getElementsByTagName('items');
                 if ($tagItems->length && $tagItems->item(0)->nodeValue == "") {
                     error_log("Skipping tag with no linked items");
                     continue;
                 }
                 $libraryID = (int) $xmlElement->getAttribute('libraryID');
                 $key = $xmlElement->getAttribute('key');
                 $lk = $libraryID . "/" . $key;
                 if (isset($keys[$lk])) {
                     throw new Exception("Tag {$lk} already processed");
                 }
                 $keys[$lk] = true;
                 $itemKeysToUpdate = array();
                 $tagObj = Zotero_Tags::convertXMLToTag($xmlElement, $itemKeysToUpdate);
                 // We need to update removed items, added items, and,
                 // if the tag itself has changed, existing items
                 $modifiedItems = array_merge($modifiedItems, array_map(function ($key) use($libraryID) {
                     return $libraryID . "/" . $key;
                 }, $itemKeysToUpdate));
                 $tagObj->save($userID, true);
             }
             unset($keys);
             unset($xml->tags);
         }
         // Add/update relations
         if ($xml->relations) {
             // DOM
             $xmlElements = dom_import_simplexml($xml->relations);
             $xmlElements = $xmlElements->getElementsByTagName('relation');
             foreach ($xmlElements as $xmlElement) {
                 $relationObj = Zotero_Relations::convertXMLToRelation($xmlElement, $userLibraryID);
                 if ($relationObj->exists()) {
                     continue;
                 }
                 $relationObj->save($userID);
             }
             unset($keys);
             unset($xml->relations);
         }
         // Add/update settings
         if ($xml->settings) {
             // DOM
             $xmlElements = dom_import_simplexml($xml->settings);
             $xmlElements = $xmlElements->getElementsByTagName('setting');
             foreach ($xmlElements as $xmlElement) {
                 $settingObj = Zotero_Settings::convertXMLToSetting($xmlElement);
                 $settingObj->save($userID);
             }
             unset($xml->settings);
         }
         if ($xml->fulltexts) {
             // DOM
             $xmlElements = dom_import_simplexml($xml->fulltexts);
             $xmlElements = $xmlElements->getElementsByTagName('fulltext');
             foreach ($xmlElements as $xmlElement) {
                 Zotero_FullText::indexFromXML($xmlElement, $userID);
             }
             unset($xml->fulltexts);
         }
         // TODO: loop
         if ($xml->deleted) {
             // Delete collections
             if ($xml->deleted->collections) {
                 Zotero_Collections::deleteFromXML($xml->deleted->collections, $userID);
             }
             // Delete items
             if ($xml->deleted->items) {
                 Zotero_Items::deleteFromXML($xml->deleted->items, $userID);
             }
             // Delete creators
             if ($xml->deleted->creators) {
                 Zotero_Creators::deleteFromXML($xml->deleted->creators, $userID);
             }
             // Delete saved searches
             if ($xml->deleted->searches) {
                 Zotero_Searches::deleteFromXML($xml->deleted->searches, $userID);
             }
             // Delete tags
             if ($xml->deleted->tags) {
                 $xmlElements = dom_import_simplexml($xml->deleted->tags);
                 $xmlElements = $xmlElements->getElementsByTagName('tag');
                 foreach ($xmlElements as $xmlElement) {
                     $libraryID = (int) $xmlElement->getAttribute('libraryID');
                     $key = $xmlElement->getAttribute('key');
                     $tagObj = Zotero_Tags::getByLibraryAndKey($libraryID, $key);
                     if (!$tagObj) {
                         continue;
                     }
                     // We need to update all items on the deleted tag
                     $modifiedItems = array_merge($modifiedItems, array_map(function ($key) use($libraryID) {
                         return $libraryID . "/" . $key;
                     }, $tagObj->getLinkedItems(true)));
                 }
                 Zotero_Tags::deleteFromXML($xml->deleted->tags, $userID);
             }
             // Delete relations
             if ($xml->deleted->relations) {
                 Zotero_Relations::deleteFromXML($xml->deleted->relations, $userID);
             }
             // Delete relations
             if ($xml->deleted->settings) {
                 Zotero_Settings::deleteFromXML($xml->deleted->settings, $userID);
             }
         }
         $toUpdate = array();
         foreach ($modifiedItems as $item) {
             // libraryID/key string
             if (is_string($item)) {
                 if (isset($savedItems[$item])) {
                     continue;
                 }
                 $savedItems[$item] = true;
                 list($libraryID, $key) = explode("/", $item);
                 $item = Zotero_Items::getByLibraryAndKey($libraryID, $key);
                 if (!$item) {
                     // Item was deleted
                     continue;
                 }
             } else {
                 $lk = $item->libraryID . "/" . $item->key;
                 if (isset($savedItems[$lk])) {
                     continue;
                 }
                 $savedItems[$lk] = true;
             }
             $toUpdate[] = $item;
         }
         Zotero_Items::updateVersions($toUpdate, $userID);
         unset($savedItems);
         unset($modifiedItems);
         try {
             self::removeUploadProcess($processID);
         } catch (Exception $e) {
             if (strpos($e->getMessage(), 'MySQL server has gone away') !== false) {
                 // Reconnect
                 error_log("Reconnecting to MySQL master");
                 Zotero_DB::close();
                 self::removeUploadProcess($processID);
             } else {
                 throw $e;
             }
         }
         // Send notifications for changed libraries
         foreach ($affectedLibraries as $libraryID) {
             Zotero_Notifier::trigger('modify', 'library', $libraryID);
         }
         Zotero_DB::commit();
         if ($profile) {
             $shardID = Zotero_Shards::getByUserID($userID);
             Zotero_DB::profileEnd($shardID);
         }
         // Return timestamp + 1, to keep the next /updated call
         // (using >= timestamp) from returning this data
         return $timestamp + 1;
     } catch (Exception $e) {
         Zotero_DB::rollback(true);
         self::removeUploadProcess($processID);
         throw $e;
     }
 }
예제 #2
0
 /**
  * Converts a DOMElement item to a Zotero_Item object
  *
  * @param	DOMElement		$xml		Item data as DOMElement
  * @return	Zotero_Item					Zotero item object
  */
 public static function convertXMLToItem(DOMElement $xml)
 {
     // Get item type id, adding custom type if necessary
     $itemTypeName = $xml->getAttribute('itemType');
     $itemTypeID = Zotero_ItemTypes::getID($itemTypeName);
     if (!$itemTypeID) {
         $itemTypeID = Zotero_ItemTypes::addCustomType($itemTypeName);
     }
     // Primary fields
     $libraryID = (int) $xml->getAttribute('libraryID');
     $itemObj = self::getByLibraryAndKey($libraryID, $xml->getAttribute('key'));
     if (!$itemObj) {
         $itemObj = new Zotero_Item();
         $itemObj->libraryID = $libraryID;
         $itemObj->key = $xml->getAttribute('key');
     }
     $itemObj->setField('itemTypeID', $itemTypeID, false, true);
     $itemObj->setField('dateAdded', $xml->getAttribute('dateAdded'), false, true);
     $itemObj->setField('dateModified', $xml->getAttribute('dateModified'), false, true);
     $xmlFields = array();
     $xmlCreators = array();
     $xmlNote = null;
     $xmlPath = null;
     $xmlRelated = null;
     $childNodes = $xml->childNodes;
     foreach ($childNodes as $child) {
         switch ($child->nodeName) {
             case 'field':
                 $xmlFields[] = $child;
                 break;
             case 'creator':
                 $xmlCreators[] = $child;
                 break;
             case 'note':
                 $xmlNote = $child;
                 break;
             case 'path':
                 $xmlPath = $child;
                 break;
             case 'related':
                 $xmlRelated = $child;
                 break;
         }
     }
     // Item data
     $setFields = array();
     foreach ($xmlFields as $field) {
         // TODO: add custom fields
         $fieldName = $field->getAttribute('name');
         // Special handling for renamed computerProgram 'version' field
         if ($itemTypeID == 32 && $fieldName == 'version') {
             $fieldName = 'versionNumber';
         }
         $itemObj->setField($fieldName, $field->nodeValue, false, true);
         $setFields[$fieldName] = true;
     }
     $previousFields = $itemObj->getUsedFields(true);
     foreach ($previousFields as $field) {
         if (!isset($setFields[$field])) {
             $itemObj->setField($field, false, false, true);
         }
     }
     $deleted = $xml->getAttribute('deleted');
     $itemObj->deleted = $deleted == 'true' || $deleted == '1';
     // Creators
     $i = 0;
     foreach ($xmlCreators as $creator) {
         // TODO: add custom creator types
         $pos = (int) $creator->getAttribute('index');
         if ($pos != $i) {
             throw new Exception("No creator in position {$i} for item " . $itemObj->key);
         }
         $key = $creator->getAttribute('key');
         $creatorObj = Zotero_Creators::getByLibraryAndKey($libraryID, $key);
         // If creator doesn't exist locally (e.g., if it was deleted locally
         // and appears in a new/modified item remotely), get it from within
         // the item's creator block, where a copy should be provided
         if (!$creatorObj) {
             $subcreator = $creator->getElementsByTagName('creator')->item(0);
             if (!$subcreator) {
                 throw new Exception("Data for missing local creator {$key} not provided", Z_ERROR_CREATOR_NOT_FOUND);
             }
             $creatorObj = Zotero_Creators::convertXMLToCreator($subcreator, $libraryID);
             if ($creatorObj->key != $key) {
                 throw new Exception("Creator key " . $creatorObj->key . " does not match item creator key {$key}");
             }
         }
         if (Zotero_Utilities::unicodeTrim($creatorObj->firstName) === '' && Zotero_Utilities::unicodeTrim($creatorObj->lastName) === '') {
             continue;
         }
         $creatorTypeID = Zotero_CreatorTypes::getID($creator->getAttribute('creatorType'));
         $itemObj->setCreator($pos, $creatorObj, $creatorTypeID);
         $i++;
     }
     // Remove item's remaining creators not in XML
     $numCreators = $itemObj->numCreators();
     $rem = $numCreators - $i;
     for ($j = 0; $j < $rem; $j++) {
         // Keep removing last creator
         $itemObj->removeCreator($i);
     }
     // Both notes and attachments might have parents and notes
     if ($itemTypeName == 'note' || $itemTypeName == 'attachment') {
         $sourceItemKey = $xml->getAttribute('sourceItem');
         $itemObj->setSource($sourceItemKey ? $sourceItemKey : false);
         $itemObj->setNote($xmlNote ? $xmlNote->nodeValue : "");
     }
     // Attachment metadata
     if ($itemTypeName == 'attachment') {
         $itemObj->attachmentLinkMode = (int) $xml->getAttribute('linkMode');
         $itemObj->attachmentMIMEType = $xml->getAttribute('mimeType');
         $itemObj->attachmentCharset = $xml->getAttribute('charset');
         // Cast to string to be 32-bit safe
         $storageModTime = (string) $xml->getAttribute('storageModTime');
         $itemObj->attachmentStorageModTime = $storageModTime ? $storageModTime : null;
         $storageHash = $xml->getAttribute('storageHash');
         $itemObj->attachmentStorageHash = $storageHash ? $storageHash : null;
         $itemObj->attachmentPath = $xmlPath ? $xmlPath->nodeValue : "";
     }
     // Related items
     if ($xmlRelated && $xmlRelated->nodeValue) {
         $relatedKeys = explode(' ', $xmlRelated->nodeValue);
     } else {
         $relatedKeys = array();
     }
     $itemObj->relatedItems = $relatedKeys;
     return $itemObj;
 }
예제 #3
0
 private static function processUploadInternal($userID, SimpleXMLElement $xml, $syncQueueID = null, $syncProcessID = null)
 {
     $userLibraryID = Zotero_Users::getLibraryIDFromUserID($userID);
     $affectedLibraries = self::parseAffectedLibraries($xml->asXML());
     // Relations-only uploads don't have affected libraries
     if (!$affectedLibraries) {
         $affectedLibraries = array(Zotero_Users::getLibraryIDFromUserID($userID));
     }
     $processID = self::addUploadProcess($userID, $affectedLibraries, $syncQueueID, $syncProcessID);
     set_time_limit(5400);
     $profile = false;
     if ($profile) {
         $shardID = Zotero_Shards::getByUserID($userID);
         Zotero_DB::profileStart($shardID);
     }
     try {
         Z_Core::$MC->begin();
         Zotero_DB::beginTransaction();
         // Mark libraries as updated
         $timestamp = Zotero_Libraries::updateTimestamps($affectedLibraries);
         Zotero_DB::registerTransactionTimestamp($timestamp);
         // Make sure no other upload sessions use this same timestamp
         // for any of these libraries, since we return >= 1 as the next
         // last sync time
         if (!Zotero_Libraries::setTimestampLock($affectedLibraries, $timestamp)) {
             throw new Exception("Library timestamp already used", Z_ERROR_LIBRARY_TIMESTAMP_ALREADY_USED);
         }
         // Add/update creators
         if ($xml->creators) {
             // DOM
             $keys = array();
             $xmlElements = dom_import_simplexml($xml->creators);
             $xmlElements = $xmlElements->getElementsByTagName('creator');
             Zotero_DB::query("SET foreign_key_checks = 0");
             try {
                 $addedLibraryIDs = array();
                 $addedCreatorDataHashes = array();
                 foreach ($xmlElements as $xmlElement) {
                     $key = $xmlElement->getAttribute('key');
                     if (isset($keys[$key])) {
                         throw new Exception("Creator {$key} already processed");
                     }
                     $keys[$key] = true;
                     $creatorObj = Zotero_Creators::convertXMLToCreator($xmlElement);
                     $addedLibraryIDs[] = $creatorObj->libraryID;
                     $creatorObj->save();
                 }
             } catch (Exception $e) {
                 Zotero_DB::query("SET foreign_key_checks = 1");
                 throw $e;
             }
             Zotero_DB::query("SET foreign_key_checks = 1");
             unset($keys);
             unset($xml->creators);
             //
             // Manual foreign key checks
             //
             // libraryID
             foreach ($addedLibraryIDs as $addedLibraryID) {
                 $shardID = Zotero_Shards::getByLibraryID($addedLibraryID);
                 $sql = "SELECT COUNT(*) FROM shardLibraries WHERE libraryID=?";
                 if (!Zotero_DB::valueQuery($sql, $addedLibraryID, $shardID)) {
                     throw new Exception("libraryID inserted into `creators` not found in `shardLibraries` ({$addedLibraryID}, {$shardID})");
                 }
             }
         }
         // Add/update items
         if ($xml->items) {
             $childItems = array();
             $relatedItemsStore = array();
             // DOM
             $keys = array();
             $xmlElements = dom_import_simplexml($xml->items);
             $xmlElements = $xmlElements->getElementsByTagName('item');
             foreach ($xmlElements as $xmlElement) {
                 $key = $xmlElement->getAttribute('key');
                 if (isset($keys[$key])) {
                     throw new Exception("Item {$key} already processed");
                 }
                 $keys[$key] = true;
                 $missing = Zotero_Items::removeMissingRelatedItems($xmlElement);
                 $itemObj = Zotero_Items::convertXMLToItem($xmlElement);
                 if ($missing) {
                     $relatedItemsStore[$itemObj->libraryID . '_' . $itemObj->key] = $missing;
                 }
                 if (!$itemObj->getSourceKey()) {
                     try {
                         $itemObj->save($userID);
                     } catch (Exception $e) {
                         if (strpos($e->getMessage(), 'libraryIDs_do_not_match') !== false) {
                             throw new Exception($e->getMessage() . " (" . $itemObj->key . ")");
                         }
                         throw $e;
                     }
                 } else {
                     $childItems[] = $itemObj;
                 }
             }
             unset($keys);
             unset($xml->items);
             while ($childItem = array_shift($childItems)) {
                 $childItem->save($userID);
             }
             // Add back related items (which now exist)
             foreach ($relatedItemsStore as $itemLibraryKey => $relset) {
                 $lk = explode('_', $itemLibraryKey);
                 $libraryID = $lk[0];
                 $key = $lk[1];
                 $item = Zotero_Items::getByLibraryAndKey($libraryID, $key);
                 foreach ($relset as $relKey) {
                     $relItem = Zotero_Items::getByLibraryAndKey($libraryID, $relKey);
                     $item->addRelatedItem($relItem->id);
                 }
                 $item->save();
             }
             unset($relatedItemsStore);
         }
         // Add/update collections
         if ($xml->collections) {
             $collections = array();
             $collectionSets = array();
             // DOM
             // Build an array of unsaved collection objects and the keys of child items
             $keys = array();
             $xmlElements = dom_import_simplexml($xml->collections);
             $xmlElements = $xmlElements->getElementsByTagName('collection');
             foreach ($xmlElements as $xmlElement) {
                 $key = $xmlElement->getAttribute('key');
                 if (isset($keys[$key])) {
                     throw new Exception("Collection {$key} already processed");
                 }
                 $keys[$key] = true;
                 $collectionObj = Zotero_Collections::convertXMLToCollection($xmlElement);
                 $xmlItems = $xmlElement->getElementsByTagName('items')->item(0);
                 // Fix an error if there's leading or trailing whitespace,
                 // which was possible in 2.0.3
                 if ($xmlItems) {
                     $xmlItems = trim($xmlItems->nodeValue);
                 }
                 $arr = array('obj' => $collectionObj, 'items' => $xmlItems ? explode(' ', $xmlItems) : array());
                 $collections[] = $collectionObj;
                 $collectionSets[] = $arr;
             }
             unset($keys);
             unset($xml->collections);
             self::saveCollections($collections);
             unset($collections);
             // Set child items
             foreach ($collectionSets as $collection) {
                 // Child items
                 if (isset($collection['items'])) {
                     $ids = array();
                     foreach ($collection['items'] as $key) {
                         $item = Zotero_Items::getByLibraryAndKey($collection['obj']->libraryID, $key);
                         if (!$item) {
                             throw new Exception("Child item '{$key}' of collection {$collection['obj']->id} not found", Z_ERROR_ITEM_NOT_FOUND);
                         }
                         $ids[] = $item->id;
                     }
                     $collection['obj']->setChildItems($ids);
                 }
             }
             unset($collectionSets);
         }
         // Add/update saved searches
         if ($xml->searches) {
             $searches = array();
             $keys = array();
             foreach ($xml->searches->search as $xmlElement) {
                 $key = (string) $xmlElement['key'];
                 if (isset($keys[$key])) {
                     throw new Exception("Search {$key} already processed");
                 }
                 $keys[$key] = true;
                 $searchObj = Zotero_Searches::convertXMLToSearch($xmlElement);
                 $searchObj->save();
             }
             unset($xml->searches);
         }
         // Add/update tags
         if ($xml->tags) {
             $keys = array();
             // DOM
             $xmlElements = dom_import_simplexml($xml->tags);
             $xmlElements = $xmlElements->getElementsByTagName('tag');
             foreach ($xmlElements as $xmlElement) {
                 $key = $xmlElement->getAttribute('key');
                 if (isset($keys[$key])) {
                     throw new Exception("Tag {$key} already processed");
                 }
                 $keys[$key] = true;
                 $tagObj = Zotero_Tags::convertXMLToTag($xmlElement);
                 $tagObj->save(true);
             }
             unset($keys);
             unset($xml->tags);
         }
         // Add/update relations
         if ($xml->relations) {
             // DOM
             $xmlElements = dom_import_simplexml($xml->relations);
             $xmlElements = $xmlElements->getElementsByTagName('relation');
             foreach ($xmlElements as $xmlElement) {
                 $relationObj = Zotero_Relations::convertXMLToRelation($xmlElement, $userLibraryID);
                 if ($relationObj->exists()) {
                     continue;
                 }
                 $relationObj->save();
             }
             unset($keys);
             unset($xml->relations);
         }
         // TODO: loop
         if ($xml->deleted) {
             // Delete collections
             if ($xml->deleted->collections) {
                 Zotero_Collections::deleteFromXML($xml->deleted->collections);
             }
             // Delete items
             if ($xml->deleted->items) {
                 Zotero_Items::deleteFromXML($xml->deleted->items);
             }
             // Delete creators
             if ($xml->deleted->creators) {
                 Zotero_Creators::deleteFromXML($xml->deleted->creators);
             }
             // Delete saved searches
             if ($xml->deleted->searches) {
                 Zotero_Searches::deleteFromXML($xml->deleted->searches);
             }
             // Delete tags
             if ($xml->deleted->tags) {
                 Zotero_Tags::deleteFromXML($xml->deleted->tags);
             }
             // Delete tags
             if ($xml->deleted->relations) {
                 Zotero_Relations::deleteFromXML($xml->deleted->relations);
             }
         }
         self::removeUploadProcess($processID);
         Zotero_DB::commit();
         Z_Core::$MC->commit();
         if ($profile) {
             $shardID = Zotero_Shards::getByUserID($userID);
             Zotero_DB::profileEnd($shardID);
         }
         // Return timestamp + 1, to keep the next /updated call
         // (using >= timestamp) from returning this data
         return $timestamp + 1;
     } catch (Exception $e) {
         Z_Core::$MC->rollback();
         Zotero_DB::rollback(true);
         self::removeUploadProcess($processID);
         throw $e;
     }
 }