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java.lang.Object org.springframework.orm.jdo.support.OpenPersistenceManagerInViewInterceptor
public class OpenPersistenceManagerInViewInterceptor
Spring web request interceptor that binds a JDO PersistenceManager to the thread for the entire processing of the request. Intended for the "Open PersistenceManager in View" pattern, i.e. to allow for lazy loading in web views despite the original transactions already being completed.
This interceptor makes JDO PersistenceManagers available via the current thread,
which will be autodetected by transaction managers. It is suitable for service
layer transactions via JdoTransactionManager
or JtaTransactionManager
as well
as for non-transactional read-only execution.
In contrast to OpenPersistenceManagerInViewFilter
, this interceptor
is set up in a Spring application context and can thus take advantage of
bean wiring. It inherits common JDO configuration properties from
JdoAccessor
, to be configured in a
bean definition.
OpenPersistenceManagerInViewFilter
,
JdoInterceptor
,
JdoTransactionManager
,
PersistenceManagerFactoryUtils.getPersistenceManager(javax.jdo.PersistenceManagerFactory, boolean)
,
TransactionSynchronizationManager
Field Summary | |
---|---|
protected Log |
logger
|
static String |
PARTICIPATE_SUFFIX
Suffix that gets appended to the PersistenceManagerFactory toString representation for the "participate in existing persistence manager handling" request attribute. |
Constructor Summary | |
---|---|
OpenPersistenceManagerInViewInterceptor()
|
Method Summary | |
---|---|
void |
afterCompletion(WebRequest request,
Exception ex)
Callback after completion of request processing, that is, after rendering the view. |
protected String |
getParticipateAttributeName()
Return the name of the request attribute that identifies that a request is already filtered. |
javax.jdo.PersistenceManagerFactory |
getPersistenceManagerFactory()
Return the JDO PersistenceManagerFactory that should be used to create PersistenceManagers. |
void |
postHandle(WebRequest request,
ModelMap model)
Intercept the execution of a request handler after its successful invocation, right before view rendering (if any). |
void |
preHandle(WebRequest request)
Intercept the execution of a request handler before its invocation. |
void |
setPersistenceManagerFactory(javax.jdo.PersistenceManagerFactory pmf)
Set the JDO PersistenceManagerFactory that should be used to create PersistenceManagers. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final String PARTICIPATE_SUFFIX
protected final Log logger
Constructor Detail |
---|
public OpenPersistenceManagerInViewInterceptor()
Method Detail |
---|
public void setPersistenceManagerFactory(javax.jdo.PersistenceManagerFactory pmf)
public javax.jdo.PersistenceManagerFactory getPersistenceManagerFactory()
public void preHandle(WebRequest request) throws DataAccessException
WebRequestInterceptor
Allows for preparing context resources (such as a Hibernate Session) and expose them as request attributes or as thread-local objects.
preHandle
in interface WebRequestInterceptor
request
- the current web request
DataAccessException
public void postHandle(WebRequest request, ModelMap model)
WebRequestInterceptor
Allows for modifying context resources after successful handler execution (for example, flushing a Hibernate Session).
postHandle
in interface WebRequestInterceptor
request
- the current web requestmodel
- the map of model objects that will be exposed to the view
(may be null
). Can be used to analyze the exposed model
and/or to add further model attributes, if desired.public void afterCompletion(WebRequest request, Exception ex) throws DataAccessException
WebRequestInterceptor
Note: Will only be called if this interceptor's preHandle
method has successfully completed!
afterCompletion
in interface WebRequestInterceptor
request
- the current web requestex
- exception thrown on handler execution, if any
DataAccessException
protected String getParticipateAttributeName()
PARTICIPATE_SUFFIX
|
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