Examples of org.apache.ojb.otm.OTMConnection

org.apache.ojb.otm.OTMConnection
A OTMConnection within the given Environment @author Raghu Rajah

     * @param product The product to remove
     */
    public static void removeProduct(Product product) throws LockingException
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;


        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            tx.begin();


            conn.deletePersistent(product);


            tx.commit();
        }
        catch (LockingException ex)
        {
            if (tx.isInProgress())
            {
                tx.rollback();
            }
            throw ex;
        }
        finally
        {
            conn.close();
        }
    }

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     * @return The iterator
     */
    public Iterator findByCriteria(Query query)
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;
        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            tx.begin();


            Iterator results = conn.getIteratorByQuery(query);


            tx.commit();


            return results;
        }
        finally
        {
            conn.close();
        }
    }

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     * @return The iterator
     */
    public Iterator findByCriteriaWithLock(Query query, int lock)
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;
        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            tx.begin();


            Iterator results = conn.getIteratorByQuery(query, lock);


            tx.commit();


            return results;
        }
        finally
        {
            conn.close();
        }
    }

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     * @return The iterator
     */
    public Iterator findByOQL(String query, Object[] queryParams) throws Exception
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;


        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            OQLQuery oql = conn.newOQLQuery();


            oql.create(query);


            if (queryParams != null)
            {
                for (int idx = 0; idx < queryParams.length; ++idx)
                {
                    oql.bind(queryParams[idx]);
                }
            }


            tx.begin();


            Iterator results = conn.getIteratorByOQLQuery(oql);


            tx.commit();


            return results;
        }
        catch (QueryInvalidException ex)
        {
            if (tx.isInProgress())
            {
                tx.rollback();
            }
            throw new Exception("Invalid OQl expression given");
        }
        catch (QueryParameterCountInvalidException ex)
        {
            if (tx.isInProgress())
            {
                tx.rollback();
            }
            throw new Exception("Incorrect number of bindings given");
        }
        catch (QueryParameterTypeInvalidException ex)
        {
            if (tx.isInProgress())
            {
                tx.rollback();
            }
            throw new Exception("Incorrect type of object given as binding");
        }
        finally
        {
            conn.close();
        }
    }

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     * @return The iterator
     */
    public Iterator moreRealisticQueryByCriteria(Query query, int lock)
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;
        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            boolean auto = !tx.isInProgress();


            if (auto)
            {
                tx.begin();
            }


            Iterator results = conn.getIteratorByQuery(query, lock);


            if (auto)
            {
                tx.commit();
            }


            return results;
        }
        finally
        {
            conn.close();
        }
    }

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     * Sample method that renames all product with a specific name.
     */
    public void renameWidgetExample()
    {
        OTMKit        kit  = SimpleKit.getInstance();
        OTMConnection conn = null;
        Transaction   tx   = null;


        try
        {
            conn = kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            tx   = kit.getTransaction(conn);


            tx.begin();


            Product sample = new Product();


            sample.setName("Wonder Widget");


            Query    query         = QueryFactory.newQueryByExample(sample);
            Iterator wonderWidgets = moreRealisticQueryByCriteria(query, LockType.WRITE_LOCK);


            while (wonderWidgets.hasNext())
            {
                Product widget = (Product)wonderWidgets.next();


                widget.setName("Improved Wonder Widget");
            }


            tx.commit();
        }
        finally
        {
            conn.close();
        }
    }

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    /**
     * @see org.apache.ojb.otm.transaction.TransactionFactory#acquireConnection(PBKey)
     */
    public OTMConnection acquireConnection (PBKey pbKey)
    {
        OTMConnection newConnection = new LocalConnection(pbKey);
        // Ensure the transaction is established for this connection.
        getTransactionForConnection(newConnection);
        return newConnection;
    }

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    Util.log("In OTMJCAManagedConnectionFactory.createManagedConnection");
    try
    {
      Kit kit = getKit();
      PBKey key = ((OTMConnectionRequestInfo) info).getPbKey();
      OTMConnection connection = kit.acquireConnection(key);
      return new OTMJCAManagedConnection(this, connection, key);
    }
    catch (ResourceException e)
    {
      throw new OTMConnectionRuntimeException(e.getMessage());

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        }


        if ((whichTest & 4) == 4)
        {
            PerformanceArticle art3 = createArticle(1002);
            OTMConnection conn = _kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
            org.apache.ojb.otm.core.Transaction tx = _kit.getTransaction(conn);
            tx.begin();
            conn.makePersistent(art3);
            tx.commit();


            tx = _kit.getTransaction(conn);
            tx.begin();
            conn.deletePersistent(art3);
            tx.commit();
        }
    }

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                arr[i] = a;
            }


            try
            {
                OTMConnection conn = _kit.acquireConnection(PersistenceBrokerFactory.getDefaultKey());
                insertNewArticles(conn);
                readArticlesByCursor(conn);
                deleteArticles(conn);
                conn.close();
            }
            catch (Throwable e)
            {
                System.out.println("Error in client " + this);
                e.printStackTrace();

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org.apache.ojb.broker.PerformanceTest2

org.apache.ojb.broker.PerformanceTest2$PerfomanceTestClientOTM

org.apache.ojb.otm.connector.OTMJCAManagedConnectionFactory

org.apache.ojb.otm.transaction.LocalTransactionFactory

org.apache.ojb.tutorials.OTMExample

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