org.springframework.jca.cci.connection

Class ConnectionSpecConnectionFactoryAdapter

java.lang.Object

org.springframework.jca.cci.connection.DelegatingConnectionFactory

org.springframework.jca.cci.connection.ConnectionSpecConnectionFactoryAdapter

All Implemented Interfaces:

InitializingBean

public class ConnectionSpecConnectionFactoryAdapter
extends DelegatingConnectionFactory

An adapter for a target CCI javax.resource.cci.ConnectionFactory, applying the given ConnectionSpec to every standard getConnection() call, that is, implicitly invoking getConnection(ConnectionSpec) on the target. All other methods simply delegate to the corresponding methods of the target ConnectionFactory.

Can be used to proxy a target JNDI ConnectionFactory that does not have a ConnectionSpec configured. Client code can work with the ConnectionFactory without passing in a ConnectionSpec on every getConnection() call.

In the following example, client code can simply transparently work with the preconfigured "myConnectionFactory", implicitly accessing "myTargetConnectionFactory" with the specified user credentials.

 <bean id="myTargetConnectionFactory" class="org.springframework.jndi.JndiObjectFactoryBean">
   <property name="jndiName" value="java:comp/env/cci/mycf"/>
 </bean>

 <bean id="myConnectionFactory" class="org.springframework.jca.cci.connection.ConnectionSpecConnectionFactoryAdapter">
   <property name="targetConnectionFactory" ref="myTargetConnectionFactory"/>
   <property name="connectionSpec">
     <bean class="your.resource.adapter.ConnectionSpecImpl">
       <property name="username" value="myusername"/>
       <property name="password" value="mypassword"/>
     </bean>
   </property>
 </bean>

If the "connectionSpec" is empty, this proxy will simply delegate to the standard getConnection() method of the target ConnectionFactory. This can be used to keep a UserCredentialsConnectionFactoryAdapter bean definition just for the option of implicitly passing in a ConnectionSpec if the particular target ConnectionFactory requires it.

Since:

1.2

Author:

Juergen Hoeller

See Also:

getConnection()

Field Summary

Fields

Modifier and Type	Field and Description
private ConnectionSpec	connectionSpec
private java.lang.ThreadLocal<ConnectionSpec>	threadBoundSpec

Constructor Summary

Constructors

Constructor and Description
ConnectionSpecConnectionFactoryAdapter()

Method Summary

Modifier and Type	Method and Description
protected Connection	doGetConnection(ConnectionSpec spec) This implementation delegates to the getConnection(ConnectionSpec) method of the target ConnectionFactory, passing in the specified user credentials.
Connection	getConnection() Determine whether there is currently a thread-bound ConnectionSpec, using it if available, falling back to the statically specified "connectionSpec" property else.
void	removeConnectionSpecFromCurrentThread() Remove any ConnectionSpec for this proxy from the current thread.
void	setConnectionSpec(ConnectionSpec connectionSpec) Set the ConnectionSpec that this adapter should use for retrieving Connections.
void	setConnectionSpecForCurrentThread(ConnectionSpec spec) Set a ConnectionSpec for this proxy and the current thread.

Methods inherited from class org.springframework.jca.cci.connection.DelegatingConnectionFactory

afterPropertiesSet, getConnection, getMetaData, getRecordFactory, getReference, getTargetConnectionFactory, setReference, setTargetConnectionFactory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

connectionSpec

private ConnectionSpec connectionSpec

threadBoundSpec

private final java.lang.ThreadLocal<ConnectionSpec> threadBoundSpec

Constructor Detail

ConnectionSpecConnectionFactoryAdapter

public ConnectionSpecConnectionFactoryAdapter()

Method Detail

setConnectionSpec

public void setConnectionSpec(ConnectionSpec connectionSpec)

Set the ConnectionSpec that this adapter should use for retrieving Connections. Default is none.

setConnectionSpecForCurrentThread

public void setConnectionSpecForCurrentThread(ConnectionSpec spec)

Set a ConnectionSpec for this proxy and the current thread. The given ConnectionSpec will be applied to all subsequent getConnection() calls on this ConnectionFactory proxy.

This will override any statically specified "connectionSpec" property.

Parameters:

spec - the ConnectionSpec to apply

See Also:

removeConnectionSpecFromCurrentThread()

removeConnectionSpecFromCurrentThread

public void removeConnectionSpecFromCurrentThread()

Remove any ConnectionSpec for this proxy from the current thread. A statically specified ConnectionSpec applies again afterwards.

See Also:

setConnectionSpecForCurrentThread(ConnectionSpec)

getConnection

public final Connection getConnection()
                               throws ResourceException

Determine whether there is currently a thread-bound ConnectionSpec, using it if available, falling back to the statically specified "connectionSpec" property else.

Overrides:

getConnection in class DelegatingConnectionFactory

Throws:

ResourceException

See Also:

doGetConnection(ConnectionSpec)

doGetConnection

protected Connection doGetConnection(ConnectionSpec spec)
                              throws ResourceException

This implementation delegates to the getConnection(ConnectionSpec) method of the target ConnectionFactory, passing in the specified user credentials. If the specified username is empty, it will simply delegate to the standard getConnection() method of the target ConnectionFactory.

Parameters:

spec - the ConnectionSpec to apply

Returns:

the Connection

Throws:

ResourceException

See Also:

javax.resource.cci.ConnectionFactory#getConnection(javax.resource.cci.ConnectionSpec), javax.resource.cci.ConnectionFactory#getConnection()