Examples of javax.jdo.PersistenceManager.deletePersistent()

javax.jdo.PersistenceManager.deletePersistent()
Delete the persistent instance from the data store. This method must be called in an active transaction. The data store object will be removed at commit. Unlike makePersistent, which makes the closure of the instance persistent, the closure of the instance is not deleted from the data store. This method has no effect if the instance is already deleted in the current transaction. This method throws JDOUserException if the instance is transient or is managed by another PersistenceManager. @param pc a persistent instance

          blogs.add(b);


        } catch (JDOObjectNotFoundException ex) {
          // blog deleted ! bad !!
          pm.currentTransaction().begin();
          pm.deletePersistent(sub);
          pm.currentTransaction().commit();
          pm.flush();
          continue;
        }
      }

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      List<Subscription> ls = (List<Subscription>) sq.execute(b.getKey());
      
      if (ls.size() == 0){
        //delete blog without subscription
        pm.currentTransaction().begin();
        pm.deletePersistent(b);
        pm.currentTransaction().commit();
        nb++;
      }
    }

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    @SuppressWarnings("unchecked")
    List<BlogEntry> oldest = (List<BlogEntry>) q.execute(cdat.getTime());
    
    for(BlogEntry be : oldest){
      pm.currentTransaction().begin();
      pm.deletePersistent(be);
      pm.currentTransaction().commit();
      nb++;
    }


    pm.close();

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    DataManager dm = DataManagerFactory.getInstance();
    PersistenceManager pm = dm.newPersistenceManager();


    Subscription s = pm.getObjectById(Subscription.class, new Long(id));
    pm.currentTransaction().begin();
    pm.deletePersistent(s);
    pm.currentTransaction().commit();
    pm.flush();


    pm.close();

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    List<Subscription> list = (List<Subscription>) q.execute(user.getKey(),
        blog.getKey());


    if (list.size() > 0) {
      pm.currentTransaction().begin();
      pm.deletePersistent(list.get(0));
      pm.currentTransaction().commit();
      pm.flush();


    }
    q.closeAll();

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    }
    
    public void deletePhoto(Photo photo) {
        PersistenceManager pm = PMF.get().getPersistenceManager();
        try {
            pm.deletePersistent(photo);
        } finally {
            pm.close();
        }
    }

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            query.declareImports("import java.util.Date");
            query.declareParameters("Date activityParam");
            List<AuthenticationToken> objs = (List<AuthenticationToken>) query.execute(cal.getTime());
              long c = objs.size();
              for (AuthenticationToken obj : objs) {
              pm.deletePersistent(obj);
              }
              String msg = user + " - Flushed " + c + " tokens.";
              log.log(Level.INFO, msg);
              resp.getWriter().write(msg);
          } finally {

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    public static void clearUserToken(String email) {
      PersistenceManager pm = PMF.get().getPersistenceManager();
      AuthenticationToken token = null;
      try {
        token = pm.getObjectById(AuthenticationToken.class, email);
        pm.deletePersistent(token);
      } 
      catch (JDOObjectNotFoundException e) { }
      finally {
        pm.close();
      }

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                    pm.currentTransaction().begin();
                    //
                    //log.warning(myDaoCommunityAccount2.getDateCommunityAccount().toString());
                    //
                    if (myDaoCommunityAccount2.getData() != null && myDaoCommunityAccount2.getData().getStats() != null) {
                      pm.deletePersistent(myDaoCommunityAccount2.getData().getStats());
                      pm.deletePersistent(myDaoCommunityAccount2.getData());
                    }
                    pm.deletePersistent(myDaoCommunityAccount2);
                    pm.currentTransaction().commit();
                  }

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                    //
                    //log.warning(myDaoCommunityAccount2.getDateCommunityAccount().toString());
                    //
                    if (myDaoCommunityAccount2.getData() != null && myDaoCommunityAccount2.getData().getStats() != null) {
                      pm.deletePersistent(myDaoCommunityAccount2.getData().getStats());
                      pm.deletePersistent(myDaoCommunityAccount2.getData());
                    }
                    pm.deletePersistent(myDaoCommunityAccount2);
                    pm.currentTransaction().commit();
                  }
             }

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