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java.lang.Object org.springframework.orm.hibernate.HibernateAccessor org.springframework.orm.hibernate.support.OpenSessionInViewInterceptor
Spring web HandlerInterceptor that binds a Hibernate Session to the thread for the whole processing of the request. Intended for the "Open Session in View" pattern, i.e. to allow for lazy loading in web views despite the original transactions already being completed.
This interceptor works similar to the AOP HibernateInterceptor: It just makes Hibernate Sessions available via the thread. It is suitable for non-transactional execution but also for middle tier transactions via HibernateTransactionManager or JtaTransactionManager. In the latter case, Sessions pre-bound by this interceptor will automatically be used for the transactions and flushed accordingly.
In contrast to OpenSessionInViewFilter, this interceptor is set up in a Spring application context and can thus take advantage of bean wiring. It derives from HibernateAccessor to inherit common Hibernate configuration properties.
WARNING: Applying this interceptor to existing logic can cause issues that have not appeared before, through the use of a single Hibernate Session for the processing of an entire request. In particular, the reassociation of persistent objects with a Hibernate Session has to occur at the very beginning of request processing, to avoid clashes will already loaded instances of the same objects.
NOTE: This interceptor will by default not flush the Hibernate session, as it assumes to be used in combination with middle tier transactions that care for the flushing, or HibernateAccessors with flushMode FLUSH_EAGER. If you want this interceptor to flush after the handler has been invoked but before view rendering, set the flushMode of this interceptor to FLUSH_AUTO in such a scenario.
HibernateAccessor.setFlushMode(int)
,
OpenSessionInViewFilter
,
HibernateInterceptor
,
HibernateTransactionManager
Field Summary |
Fields inherited from class org.springframework.orm.hibernate.HibernateAccessor |
FLUSH_AUTO, FLUSH_EAGER, FLUSH_NEVER, logger |
Constructor Summary | |
OpenSessionInViewInterceptor()
Create a new OpenSessionInViewInterceptor, turning the default flushMode to FLUSH_NEVER. |
Method Summary | |
void |
afterCompletion(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
java.lang.Object handler,
java.lang.Exception ex)
Unbinds the Hibernate Session from the thread and closes it. |
void |
postHandle(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
java.lang.Object handler,
ModelAndView modelAndView)
Flushes the Hibernate Session before view rendering, if necessary. |
boolean |
preHandle(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
java.lang.Object handler)
Opens a new Hibernate Session according to the settings of this HibernateAccessor and binds in to the thread via TransactionSynchronizationManager. |
Methods inherited from class org.springframework.orm.hibernate.HibernateAccessor |
afterPropertiesSet, convertHibernateAccessException, convertJdbcAccessException, flushIfNecessary, getEntityInterceptor, getFlushMode, getJdbcExceptionTranslator, getSessionFactory, setEntityInterceptor, setFlushMode, setFlushModeName, setJdbcExceptionTranslator, setSessionFactory |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public OpenSessionInViewInterceptor()
HibernateAccessor.setFlushMode(int)
Method Detail |
public boolean preHandle(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Object handler) throws DataAccessException
preHandle
in interface HandlerInterceptor
request
- current HTTP requestresponse
- current HTTP responsehandler
- chosen handler to execute, for type and/or instance evaluation
true
if the execution chain should proceed with the
next interceptor respectively the handler itself. Else, DispatcherServlet
assumes that this interceptor has already dealt with the response itself.
DataAccessException
SessionFactoryUtils.getSession(net.sf.hibernate.SessionFactory, boolean)
,
TransactionSynchronizationManager
public void postHandle(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Object handler, ModelAndView modelAndView) throws DataAccessException
postHandle
in interface HandlerInterceptor
request
- current HTTP requestresponse
- current HTTP responsehandler
- chosen handler to execute, for type and/or instance examinationmodelAndView
- the ModelAndView that the handler returned, can also be null
DataAccessException
HibernateAccessor.setFlushMode(int)
public void afterCompletion(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Object handler, java.lang.Exception ex) throws DataAccessException
afterCompletion
in interface HandlerInterceptor
request
- current HTTP requestresponse
- current HTTP responsehandler
- chosen handler to execute, for type and/or instance examinationex
- exception thrown on handler execution
DataAccessException
SessionFactoryUtils.closeSessionIfNecessary(net.sf.hibernate.Session, net.sf.hibernate.SessionFactory)
,
TransactionSynchronizationManager
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