类 OpenSessionInViewInterceptor
- java.lang.Object
- org.springframework.orm.hibernate4.support.OpenSessionInViewInterceptor
public class OpenSessionInViewInterceptor extends Object implements AsyncWebRequestInterceptor
Spring web request interceptor that binds a HibernateSession
to the thread for the entire processing of the request.This class is a concrete expression of the "Open Session in View" pattern, which is a pattern that allows for the lazy loading of associations in web views despite the original transactions already being completed.
This interceptor makes Hibernate Sessions available via the current thread, which will be autodetected by transaction managers. It is suitable for service layer transactions via
HibernateTransactionManager
as well as for non-transactional execution (if configured appropriately).In contrast to
OpenSessionInViewFilter
, this interceptor is configured in a Spring application context and can thus take advantage of bean wiring.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 HibernateSession
has to occur at the very beginning of request processing, to avoid clashes with already loaded instances of the same objects.- 从以下版本开始:
- 3.1
- 作者:
- Juergen Hoeller
- 另请参阅:
OpenSessionInViewFilter
,OpenSessionInterceptor
,HibernateTransactionManager
,TransactionSynchronizationManager
,SessionFactory.getCurrentSession()
字段概要
字段 修饰符和类型 字段 说明 protected Log
logger
static String
PARTICIPATE_SUFFIX
Suffix that gets appended to theSessionFactory
toString()
representation for the "participate in existing session handling" request attribute.
构造器概要
构造器 构造器 说明 OpenSessionInViewInterceptor()
方法概要
所有方法 实例方法 具体方法 修饰符和类型 方法 说明 void
afterCompletion(WebRequest request, Exception ex)
Unbind the HibernateSession
from the thread and close it).void
afterConcurrentHandlingStarted(WebRequest request)
Called instead ofpostHandle
andafterCompletion
, when the the handler started handling the request concurrently.protected String
getParticipateAttributeName()
Return the name of the request attribute that identifies that a request is already intercepted.SessionFactory
getSessionFactory()
Return the Hibernate SessionFactory that should be used to create Hibernate Sessions.protected Session
openSession()
Open a Session for the SessionFactory that this interceptor uses.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)
Open a new HibernateSession
according and bind it to the thread via theTransactionSynchronizationManager
.void
setSessionFactory(SessionFactory sessionFactory)
Set the Hibernate SessionFactory that should be used to create Hibernate Sessions.
字段详细资料
PARTICIPATE_SUFFIX
public static final String PARTICIPATE_SUFFIX
Suffix that gets appended to theSessionFactory
toString()
representation for the "participate in existing session handling" request attribute.
构造器详细资料
OpenSessionInViewInterceptor
public OpenSessionInViewInterceptor()
方法详细资料
setSessionFactory
public void setSessionFactory(SessionFactory sessionFactory)
Set the Hibernate SessionFactory that should be used to create Hibernate Sessions.
getSessionFactory
public SessionFactory getSessionFactory()
Return the Hibernate SessionFactory that should be used to create Hibernate Sessions.
preHandle
public void preHandle(WebRequest request) throws DataAccessException
Open a new HibernateSession
according and bind it to the thread via theTransactionSynchronizationManager
.- 指定者:
preHandle
在接口中WebRequestInterceptor
- 参数:
request
- the current web request- 抛出:
DataAccessException
postHandle
public void postHandle(WebRequest request, ModelMap model)
从接口复制的说明:WebRequestInterceptor
Intercept the execution of a request handler after its successful invocation, right before view rendering (if any).Allows for modifying context resources after successful handler execution (for example, flushing a Hibernate Session).
- 指定者:
postHandle
在接口中WebRequestInterceptor
- 参数:
request
- the current web requestmodel
- the map of model objects that will be exposed to the view (may benull
). Can be used to analyze the exposed model and/or to add further model attributes, if desired.
afterCompletion
public void afterCompletion(WebRequest request, Exception ex) throws DataAccessException
Unbind the HibernateSession
from the thread and close it).- 指定者:
afterCompletion
在接口中WebRequestInterceptor
- 参数:
request
- the current web requestex
- exception thrown on handler execution, if any- 抛出:
DataAccessException
- 另请参阅:
TransactionSynchronizationManager
afterConcurrentHandlingStarted
public void afterConcurrentHandlingStarted(WebRequest request)
从接口复制的说明:AsyncWebRequestInterceptor
Called instead ofpostHandle
andafterCompletion
, when the the handler started handling the request concurrently.- 指定者:
afterConcurrentHandlingStarted
在接口中AsyncWebRequestInterceptor
- 参数:
request
- the current request
openSession
protected Session openSession() throws DataAccessResourceFailureException
Open a Session for the SessionFactory that this interceptor uses.The default implementation delegates to the
SessionFactory.openSession()
method and sets theSession
's flush mode to "MANUAL".- 返回:
- the Session to use
- 抛出:
DataAccessResourceFailureException
- if the Session could not be created- 另请参阅:
FlushMode.MANUAL
getParticipateAttributeName
protected String getParticipateAttributeName()
Return the name of the request attribute that identifies that a request is already intercepted.The default implementation takes the
toString()
representation of theSessionFactory
instance and appendsPARTICIPATE_SUFFIX
.