コード例 #1
0
ファイル: LockManager.java プロジェクト: JoshBone/Mint-Athena
 /**
  * Check if the item is accessible for the given User and session. It is if there is no lock or
  * the user owns the lock.
  *
  * @param item
  * @return
  */
 public boolean canAccess(User u, String sessionId, Lockable item) {
   boolean result = true;
   StatelessSession s = getSession();
   Transaction tx = s.beginTransaction();
   try {
     Lock example = createLock(item);
     Lock lock =
         (Lock)
             s.createCriteria(Lock.class)
                 .add(
                     Example.create(example)
                         .excludeProperty("httpSessionId")
                         .excludeProperty("userLogin")
                         .excludeProperty("name"))
                 .uniqueResult();
     tx.commit();
     if (lock != null) {
       if ((lock.getUserLogin().equals(u.getLogin()))
           && (lock.getHttpSessionId().equals(sessionId))) result = true;
       else result = false;
     }
   } catch (HibernateException he) {
     log.debug("Lock problem in canAccess");
     tx.rollback();
   }
   return result;
 }
コード例 #2
0
ファイル: LockManager.java プロジェクト: JoshBone/Mint-Athena
  /**
   * Aquire lock for given item or check that you still have it. This should be done before database
   * objects are updated, not just before they are made persistent. It should not be done (Cannot be
   * done) with objects that don't have a dbID yet.
   *
   * @param u
   * @param sessionId
   * @param item
   * @return
   */
  public boolean aquireLock(User u, String sessionId, Lockable item) {
    boolean result = false;
    StatelessSession s = getSession();
    Transaction tx = s.beginTransaction();
    if ((item == null) || (item.getDbID() == null)) throw new Error("Unlockable item");
    try {
      Lock lock = createLock(item);
      lock.setUserLogin(u.getLogin());
      lock.setHttpSessionId(sessionId);
      log.debug("Aquire Lock\n" + lock.toString());
      List<Lock> l =
          s.createQuery("from Lock where objectId = :id and objectType = :type")
              .setLong("id", lock.getObjectId())
              .setString("type", lock.getObjectType())
              .list();
      if (l.size() == 0) {
        s.insert(lock);
        tx.commit();
        result = true;
      } else {
        Lock lock2 = l.get(0);
        if (lock2.getUserLogin().equals(lock.getUserLogin())
            && lock2.getHttpSessionId().equals(lock.getHttpSessionId())) result = true;
        else result = false;
        tx.commit();
      }
    } catch (HibernateException he) {
      log.debug("lock aquire failed");
      StringWriter sw = new StringWriter();
      he.printStackTrace(new PrintWriter(sw));

      log.error(sw.toString());
      tx.rollback();
    }
    return result;
  }
コード例 #3
0
ファイル: LockManager.java プロジェクト: JoshBone/Mint-Athena
  /**
   * Releases the lock on the item (only for given user and session). Returns false if the lock
   * didn't exist (or was owned by somebody else)
   *
   * @param u
   * @param sessionId
   * @param item
   * @return
   */
  public boolean releaseLock(User u, String sessionId, Lockable item) {
    boolean result = false;
    StatelessSession s = getSession();
    Transaction tx = s.beginTransaction();
    try {
      Lock example = createLock(item);
      example.setHttpSessionId(sessionId);
      example.setUserLogin(u.getLogin());

      Lock lock =
          (Lock)
              s.createCriteria(Lock.class)
                  .add(Example.create(example).excludeProperty("name"))
                  .uniqueResult();

      s.delete(lock);
      tx.commit();
      result = true;
    } catch (HibernateException he) {
      log.debug("lock not released");
      tx.rollback();
    }
    return result;
  }
コード例 #4
0
ファイル: LockManager.java プロジェクト: JoshBone/Mint-Athena
 public List<Lock> findByUser(User u) {
   StatelessSession s = getSession();
   List<Lock> l =
       s.createQuery("from Lock where userLogin = :login").setString("login", u.getLogin()).list();
   return l;
 }