Examples of javax.jdo.Transaction

javax.jdo.Transaction
The JDO Transaction interface provides for initiation and completion of transactions under user control. It is a sub-interface of the {@link PersistenceManager}that deals with options and transaction demarcation.
Transaction options include whether optimistic concurrency control should be used for the current transaction, whether instances may hold values in the cache outside transactions, and whether values should be retained in the cache after transaction completion. These options are valid for both managed and non-managed transactions.
Transaction initiation and completion methods have similar semantics to javax.transaction.UserTransaction when used outside a managed environment. When used in a managed environment, transaction initiation and completion methods may only be used with bean-managed transaction semantics. @version 2.3

    }


    /** */
    private void runTestRetrieveAllWithCollectionDFGfalse(PersistenceManager pm) {
        createObjects(pm);
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Collection coll = new ArrayList();
            coll.add(p1);
            coll.add(p3);
            coll.add(rect);
            pm.retrieveAll(coll, false);
            pm.makeTransientAll(coll);
            tx.commit();
            tx = null;
            checkP1();
            checkP3();
            checkRectP1();
            checkRectId();
        }
        finally {
            if ((tx != null) && tx.isActive())
                tx.rollback();
        }
    }

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    }


    /** */
    private void runTestRetrieveAllWithArray(PersistenceManager pm) {
        createObjects(pm);
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Object[] objs = new Object[3];
            objs[0] = p1;
            objs[1] = p3;
            objs[2] = rect;
            pm.retrieveAll(objs);
            pm.makeTransientAll(objs);
            tx.commit();
            tx = null;
            checkP1();
            checkP3();
            checkRectP1();
            checkRectId();
        }
        finally {
            if ((tx != null) && tx.isActive())
                tx.rollback();
        }
    }

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    }


    /** */
    private void runTestRetrieveAllWithArrayDFGtrue(PersistenceManager pm) {
        createObjects(pm);
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Object[] objs = new Object[3];
            objs[0] = p1;
            objs[1] = p3;
            objs[2] = rect;
            pm.retrieveAll(objs, true);
            pm.makeTransientAll(objs);
            tx.commit();
            tx = null;
            checkP1();
            checkP3();
            // checkRectP1(); p1 is not in the default fetch group by default
            checkRectId();
        }
        finally {
            if ((tx != null) && tx.isActive())
                tx.rollback();
        }
    }

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    }


    /** */
    private void runTestRetrieveAllWithArrayDFGfalse(PersistenceManager pm) {
        createObjects(pm);
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Object[] objs = new Object[3];
            objs[0] = p1;
            objs[1] = p3;
            objs[2] = rect;
            pm.retrieveAll(objs, false);
            pm.makeTransientAll(objs);
            tx.commit();
            tx = null;
            checkP1();
            checkP3();
            checkRectP1();
            checkRectId();
        }
        finally {
            if ((tx != null) && tx.isActive())
                tx.rollback();
        }
    }

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        }
    }


    /** */
    private void createObjects(PersistenceManager pm) {
        Transaction tx = pm.currentTransaction();
        try {
            tx.setRetainValues(false);
            tx.begin();
            p1   = new PCPoint(1,1);
            p1print = p1.toString();
            p2   = new PCPoint(2,2);
            p3   = new PCPoint2(3,3);
            rect = new PCRect(100, p1, p2);
            pm.makePersistent(p1);
            pm.makePersistent(p2);
            pm.makePersistent(p3);
            pm.makePersistent(rect);
            if (debug) {
                logger.debug("p1: " + p1.name());
                logger.debug("p2: " + p2.name());
                logger.debug("p3: " + p3.name());
                logger.debug("rect id: " + rect.getId() + 
                             ", upperLeft: " + rect.getUpperLeft().name() + 
                             ", lowerRight: " + rect.getLowerRight().name());
            }
            tx.commit();
            tx = null;
        }
        finally {
            if ((tx != null) && tx.isActive())
                tx.rollback();
        }
    }

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     * Helper method retuning all Employee instances.
     * @param pm the PersistenceManager 
     * @return a List including all persistent Employee instances
     */
    protected List getAllEmployees(PersistenceManager pm) {
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            List allEmployees = (List)pm.newQuery(Employee.class).execute();
            tx.commit();
            return allEmployees;
        } finally { 
            if ((tx != null) && tx.isActive()) {
                tx.rollback();
            }
        }
    }

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  private static final long serialVersionUID = 6120246852958797435L;


  public static SpadgerUser findSpadgerUser(String id) {
    SpadgerUser user = null;
    PersistenceManager pm = PMF.get().getPersistenceManager();
    Transaction tx = pm.currentTransaction();
    try {
      tx.begin();
      user = pm.getObjectById(SpadgerUser.class, id);
    } catch (JDOObjectNotFoundException e) {
      user = new SpadgerUser();
      user.id = id;
      user.email = id;
      user = pm.makePersistent(user);
      user = pm.detachCopy(user);
    } finally {
      tx.commit();
      pm.close();
    }
    return user;
  }

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  public Count getCount(WorkoutContext con){
    PersistenceManagerFactory pmf = PMF.get();
    PersistenceManager pm = null;
    try{
      pm = pmf.getPersistenceManager();
      Transaction tx = pm.currentTransaction();
      Count c = null;
      try{
        tx.begin();
        try{
          c = pm.getObjectById(Count.class, ViewConstants.PRIMARYKEY_ID);
        }catch(Exception e){
          log.log(Level.INFO, "Count 取得中例外", e);
          c = new Count();
        }
        c.setTotal(c.getTotal() + 1);
        if(con.getKingOrSolderScore()>con.getScholarOrCraftsmanScore()){
          c.setKingOrSolder(c.getKingOrSolder() + 1);
          if(con.getKingScore()>con.getSolderScore()){
            c.setKing(c.getKing() + 1);
          }else if(con.getKingScore()<con.getSolderScore()){
            c.setSolder(c.getSolder() + 1);
          }
          
        }else if(con.getKingOrSolderScore()<con.getScholarOrCraftsmanScore()){
          c.setScholarOrCraftsman(c.getScholarOrCraftsman() + 1);
          if(con.getScholarScore()>con.getCraftsmanScore()){
            c.setScholar(c.getScholar() + 1);
          }else if(con.getScholarScore()<con.getCraftsmanScore()){
            c.setCraftsman(c.getCraftsman() + 1);
          }
        }
        pm.makePersistent(c);
        
        tx.commit();
        log.info("Count:" + c.toString());
        return c;
      }finally{
        if(tx.isActive()) tx.rollback();
      }
    }finally{
      if(pm!=null) pm.close();
    }
  }

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  @SuppressWarnings("rawtypes")
  public static void deleteAll(Collection objectsToDelete)
  {
    PersistenceManager pm = PMF.get().getPersistenceManager();
    Transaction tx = pm.currentTransaction();
    try {
      tx.begin();
      pm.deletePersistentAll(objectsToDelete);
      tx.commit();
      
      for(Object obj: objectsToDelete)
      {
        try{
        if (obj instanceof Keyed)
          CacheSupport.cacheDelete(((Keyed)obj).getKey());
        } catch(Exception e)
        {}
      }
    } catch(Exception e) {
      if (tx.isActive()) 
        tx.rollback();
      throw new RuntimeException(e);
    } finally {
      pm.close();
    }
    return;

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  public Count getCount(){
    PersistenceManagerFactory pmf = PMF.get();
    PersistenceManager pm = null;
    try{
      pm = pmf.getPersistenceManager();
      Transaction tx = pm.currentTransaction();
      Count c = null;
      try{
        tx.begin();
        try{
          c = pm.getObjectById(Count.class, ViewConstants.PRIMARYKEY_ID);
        }catch(Exception e){
          log.log(Level.INFO, "Count 取得中例外", e);
          c = new Count();
        }
        tx.commit();
        log.info("Count:" + c.toString());
        return c;
      }finally{
        if(tx.isActive()) tx.rollback();
      }
    }finally{
      if(pm!=null) pm.close();
    }
  }

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