Examples of javax.sql.ConnectionEventListener

javax.sql.ConnectionEventListener

A ConnectionEventListener is an object that registers to receive events generated by a PooledConnection.
The ConnectionEventListener interface is implemented by a connection pooling component. A connection pooling component will usually be provided by a JDBC driver vendor, or another system software vendor. A ConnectionEventListener is notified by a JDBC driver when an application is finished using its Connection object. This event occurs after the application calls close on its representation of the PooledConnection. A ConnectionEventListener is also notified when a Connection error occurs due to the fact that the PooledConnection is unfit for future use---the server has crashed, for example. The listener is notified, by the JDBC driver, just before the driver throws an SQLException to the application using the PooledConnection.

   */
  protected synchronized void notifyListener(SQLException e){
    if(listeners != null && !listeners.isEmpty()){
      Iterator iter = listeners.iterator();
      while(iter.hasNext()){
        ConnectionEventListener listener = (ConnectionEventListener)iter.next();
        if(e == null){
          //no exception
          listener.connectionClosed(new ConnectionEvent(this));
        }else{
          //exception occurred
          listener.connectionErrorOccurred(new ConnectionEvent(this, e));  
        }
      }
    }  
  }

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        }


        int traceId = ((JdbcXAConnection) xaConn).getTraceId();
        assertTrue(xaConn.toString().startsWith("xads" + traceId + ": conn"));


        xaConn.addConnectionEventListener(new ConnectionEventListener() {
            public void connectionClosed(ConnectionEvent event) {
                // nothing to do
            }


            public void connectionErrorOccurred(ConnectionEvent event) {

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        ConnectionImpl c = Mockito.mock(ConnectionImpl.class);
        Mockito.doThrow(new SQLException(new InvalidSessionException())).when(c).commit();
        return c;
      }
    });
    ConnectionEventListener cel = Mockito.mock(ConnectionEventListener.class);
    xaConn.addConnectionEventListener(cel);
    Connection c = xaConn.getConnection();
    try {
      c.commit();
    } catch (SQLException e) {

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        debugCode("closedHandle();");
        ConnectionEvent event = new ConnectionEvent(this);
        // go backward so that a listener can remove itself
        // (otherwise we need to clone the list)
        for (int i = listeners.size() - 1; i >= 0; i--) {
            ConnectionEventListener listener = listeners.get(i);
            listener.connectionClosed(event);
        }
        handleConn = null;
    }

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  protected void notifyClose() {
      if (listeners.size()>0) {
        Iterator<ConnectionEventListener> oIter = listeners.iterator();
        while (oIter.hasNext()) {
          ConnectionEventListener oCevl = oIter.next();
          oCevl.connectionClosed(new ConnectionEvent(this));
        } // wend
      } // fi        
  } // notifyClose

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     * @param ex the given exception
     */
    public void notifyError(final IManagedConnection proxy, final SQLException ex) {
        // Notify event to listeners
        for (int i = 0; i < eventListeners.size(); i++) {
            ConnectionEventListener l = eventListeners.elementAt(i);
            l.connectionErrorOccurred(new ConnectionEvent(proxy, ex));
        }
    }

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        ConnectionEvent event = new ConnectionEvent(this.pooledConnection, e);


        for (Iterator iterator = connectionListeners.iterator();
                iterator.hasNext(); ) {
            ConnectionEventListener connectionEventListener =
                (ConnectionEventListener) iterator.next();


            connectionEventListener.connectionErrorOccurred(event);
        }
    }

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        ConnectionEvent connectionEvent =
            new ConnectionEvent(this.pooledConnection);


        for (Iterator iterator = connectionListeners.iterator();
                iterator.hasNext(); ) {
            ConnectionEventListener connectionListener =
                (ConnectionEventListener) iterator.next();


            connectionListener.connectionClosed(connectionEvent);
        }
    }

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  void closeEvent(Connection conn)
  {
    ConnectionEvent event = new ConnectionEvent(this);
    
    for (int i = 0; i < _listeners.size(); i++) {
      ConnectionEventListener listener = _listeners.get(i);


      listener.connectionClosed(event);
    }
  }

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        if (eventListener != null && !eventListener.isEmpty()) {
            ConnectionEvent event = new ConnectionEvent(this, exception);
            eventIterators++;
            try {
                for (Iterator it = eventListener.iterator(); it.hasNext();) {
                    ConnectionEventListener l =
                            (ConnectionEventListener) it.next();
                    if (exception == null) {
                        l.connectionClosed(event);
                    } else {
                        l.connectionErrorOccurred(event);
                    }
                }
            } finally {
                eventIterators--;
            }

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