ConnectionFactoryImpl


1   package example;
2   
3   import java.io.*;
4   import java.util.*;
5   
6   import javax.resource.ResourceException  ;
7   
8   import javax.resource.spi.ConnectionManager  ;
9   
10  import javax.security.auth.*;
11  
12  /**
13   * Application's view of the connection factory.  This
14   * class may have any API the connector wants.
15   *
16   * Often, it will just create connections.
17   */
18  public class ConnectionFactoryImpl {
19    // Reference to Resin's ConnectionManager API, used to
20    // allocate a new connection
21    private ConnectionManager   _connManager;
22  
23    // Reference to the underlying SPI ManagedConnectionFactory
24    private ManagedConnectionFactoryImpl _mcFactory;
25  
26    private volatile boolean _isClosed;
27  
28    /**
29     * Create the connection factory, with a reference to
30     * Resin's ConnectionManager interface.
31     *
32     * @param mcFactory the connector's SPI ManagedConnectionFactory
33     * @param connManager Resin's ConnectionManager for allocating connections
34     */
35    ConnectionFactoryImpl(ManagedConnectionFactoryImpl mcFactory,
36              ConnectionManager   connManager)
37    {
38      _mcFactory = mcFactory;
39      _connManager = connManager;
40    }
41  
42    /**
43     * Gets an available connection.  Something like
44     * <code>getConnection</code>
45     * is the main method most connections factories will implement.
46     * It returns a class specific to the connector.
47     *
48     * @return the user connection facade.
49     */
50    public ConnectionImpl getConnection()
51      throws ResourceException  
52    {
53      // Asks Resin to return a new user connection.  The second argument
54      // (ConnectionRequestInfo) is null since we have no specific
55      // configuration information to pass along.
56      return (ConnectionImpl) _connManager.allocateConnection(_mcFactory, null);
57    }
58  
59    public String   toString()
60    {
61      return "ConnectionFactoryImpl[" + _mcFactory + "]";
62    }
63  }
64
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