private synchronized void synchronizeListHelper( StoreObject list, GtasksInvoker invoker, boolean manual, SyncExceptionHandler errorHandler, SyncResultCallback callback) { String listId = list.getValue(GtasksList.REMOTE_ID); long lastSyncDate; if (!manual && list.containsNonNullValue(GtasksList.LAST_SYNC)) { lastSyncDate = list.getValue(GtasksList.LAST_SYNC); } else { lastSyncDate = 0; } boolean includeDeletedAndHidden = lastSyncDate != 0; try { Tasks taskList = invoker.getAllGtasksFromListId( listId, includeDeletedAndHidden, includeDeletedAndHidden, lastSyncDate); List<com.google.api.services.tasks.model.Task> tasks = taskList.getItems(); if (tasks != null) { callback.incrementMax(tasks.size() * 10); HashSet<Long> localIds = new HashSet<Long>(tasks.size()); for (com.google.api.services.tasks.model.Task t : tasks) { GtasksTaskContainer container = parseRemoteTask(t, listId); gtasksMetadataService.findLocalMatch(container); container.gtaskMetadata.setValue( GtasksMetadata.GTASKS_ORDER, Long.parseLong(t.getPosition())); container.gtaskMetadata.setValue( GtasksMetadata.PARENT_TASK, gtasksMetadataService.localIdForGtasksId(t.getParent())); container.gtaskMetadata.setValue(GtasksMetadata.LAST_SYNC, DateUtilities.now() + 1000L); write(container); localIds.add(container.task.getId()); callback.incrementProgress(10); } list.setValue(GtasksList.LAST_SYNC, DateUtilities.now()); storeObjectDao.persist(list); if (lastSyncDate == 0) { Long[] localIdArray = localIds.toArray(new Long[localIds.size()]); Criterion delete = Criterion.and( Metadata.KEY.eq(GtasksMetadata.METADATA_KEY), GtasksMetadata.LIST_ID.eq(listId), Criterion.not(Metadata.TASK.in(localIdArray))); taskService.deleteWhere( Task.ID.in(Query.select(Metadata.TASK).from(Metadata.TABLE).where(delete))); metadataService.deleteWhere(delete); } gtasksTaskListUpdater.correctOrderAndIndentForList(listId); } } catch (GoogleTasksException e) { if (errorHandler != null) errorHandler.handleException("gtasks-sync-io", e, e.getType()); // $NON-NLS-1$ } catch (IOException e) { if (errorHandler != null) errorHandler.handleException("gtasks-sync-io", e, e.toString()); // $NON-NLS-1$ } }