src/main/java/eu/etaxonomy/cdm/vaadin/util/CdmVaadinSessionUtilities.java

   1 /**
   2 * Copyright (C) 2015 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9 package eu.etaxonomy.cdm.vaadin.util;
  10
  11 import java.util.concurrent.locks.Lock;
  12
  13 import org.apache.log4j.Logger;
  14
  15 import com.vaadin.server.VaadinSession;
  16
  17 import eu.etaxonomy.cdm.vaadin.session.BasicEventService;
  18 import eu.etaxonomy.cdm.vaadin.session.CdmDataChangeService;
  19 import eu.etaxonomy.cdm.vaadin.session.SelectionService;
  20
  21 /**
  22  * @author cmathew
  23  * @date 7 Apr 2015
  24  *
  25  */
  26 public class CdmVaadinSessionUtilities {
  27
  28     private static final Logger logger = Logger.getLogger(CdmVaadinSessionUtilities.class);
  29
  30     public static void setCurrentAttribute(String name, Object value) {
  31         Lock sessionLock = VaadinSession.getCurrent().getLockInstance();
  32         try {
  33             if(sessionLock != null) {
  34                 sessionLock.lock();
  35             }
  36             VaadinSession.getCurrent().setAttribute(name, value);
  37         } finally {
  38             if(sessionLock != null) {
  39                 sessionLock.unlock();
  40             }
  41         }
  42     }
  43
  44     public static void initCdmDataChangeService() {
  45 //        if(getCurrentCdmDataChangeService() != null) {
  46 //           logger.info("replacing data change service with new one");
  47 //        }
  48         setCurrentAttribute(CdmDataChangeService.KEY, new CdmDataChangeService());
  49     }
  50
  51     public static CdmDataChangeService getCurrentCdmDataChangeService() {
  52         return (CdmDataChangeService) VaadinSession.getCurrent().getAttribute(CdmDataChangeService.KEY);
  53     }
  54
  55     public static void initSelectionService() {
  56 //        if(getCurrentSelectionService() != null) {
  57 //            logger.info("replacing selection service with new one");
  58 //        }
  59         setCurrentAttribute(SelectionService.KEY, new SelectionService());
  60     }
  61
  62     public static SelectionService getCurrentSelectionService() {
  63         return (SelectionService) VaadinSession.getCurrent().getAttribute(SelectionService.KEY);
  64     }
  65
  66     public static void initBasicEventService() {
  67 //        if(getCurrentBasicEventService() != null) {
  68 //            logger.info("replacing basic event service with new one");
  69 //        }
  70         setCurrentAttribute(BasicEventService.KEY, new BasicEventService());
  71     }
  72
  73     public static BasicEventService getCurrentBasicEventService() {
  74         return (BasicEventService) VaadinSession.getCurrent().getAttribute(BasicEventService.KEY);
  75     }
  76 }