Java Reference
In-Depth Information
DataSourceTransactionManager
is configured with a
JDBC
DataSource
. When
called by the
TransactionInterceptor
to begin a transaction, it gets a connection
from the
DataSource
and ensures that auto-commit is disabled. It also binds the
JDBC
connection to the thread for use by the
SqlMapClientTemplate
. Later when
it is called by the
TransactionInterceptor
to commit the transaction, the
Data-
SourceTransactionManager
calls
Connection.commit()
, closes the connection, and
unbinds it from the thread.
Making the transaction scripts transactional is easy. In the Spring bean defini-
tions you configure a
TransactionInterceptor
to use a
DataSourceTransaction-
Manager
and apply it to the transaction script class. Let's see how to do this.
9.5.2
The Spring bean definitions
Figure 9.9 shows the Spring beans that we must define to configure the
Place-
OrderTransactionScripts
class and make it transactional. In addition to configur-
ing the
TransactionInterceptor
bean, it defines beans for the
DAO
s and the
SqlMapClient
and
SqlMapClientTemplate
classes.
PlaceOrder
Transaction
ScriptsProxy
Creator
Presentation Tier
PlaceOrder
Transaction
Scripts
Transaction
Interceptor
APPLICATION
CLASSES
DataSource
PendingOrder
DAO
RestaurantDAO
Transaction
Manager
SPRING
FRAMEWORK
CLASSES
SqlMapClient
Template
iBATIS CLASSES
SqlMapClient
Figure 9.9
The Spring beans required to deploy the
PlaceOrderTransactionScripts
JDBC CLASSES
DataSource
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