类 OpenSessionInViewInterceptor
- java.lang.Object
- org.springframework.orm.hibernate3.HibernateAccessor
- org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor
- 所有已实现的接口:
Aware
,BeanFactoryAware
,InitializingBean
,AsyncWebRequestInterceptor
,WebRequestInterceptor
@Deprecated public class OpenSessionInViewInterceptor extends HibernateAccessor implements AsyncWebRequestInterceptor
已过时。as of Spring 4.3, in favor of Hibernate 4.x/5.xSpring 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 viaHibernateTransactionManager
orJtaTransactionManager
as well as for non-transactional execution (if configured appropriately).NOTE: This interceptor will by default not flush the Hibernate
Session
, with the flush mode being set toFlushMode.NEVER
. It assumes that it will be used in combination with service layer transactions that handle the flushing: the active transaction manager will temporarily change the flush mode toFlushMode.AUTO
during a read-write transaction, with the flush mode reset toFlushMode.NEVER
at the end of each transaction. If you intend to use this interceptor without transactions, consider changing the default flush mode (through the"flushMode"
property).In contrast to
OpenSessionInViewFilter
, this interceptor is configured in a Spring application context and can thus take advantage of bean wiring. It inherits common Hibernate configuration properties fromHibernateAccessor
, to be configured in a bean definition.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.Alternatively, turn this interceptor into deferred close mode, by specifying "singleSession"="false": It will not use a single session per request then, but rather let each data access operation or transaction use its own session (as would be the case without Open Session in View). Each of those sessions will be registered for deferred close though, which will actually be processed at request completion.
A single session per request allows for the most efficient first-level caching, but can cause side effects, for example on
saveOrUpdate
or when continuing after a rolled-back transaction. The deferred close strategy is as safe as no Open Session in View in that respect, while still allowing for lazy loading in views (but not providing a first-level cache for the entire request).- 从以下版本开始:
- 1.2
- 作者:
- Juergen Hoeller
- 另请参阅:
setSingleSession(boolean)
,HibernateAccessor.setFlushMode(int)
,OpenSessionInViewFilter
,OpenSessionInterceptor
,HibernateTransactionManager
,SessionFactoryUtils.getSession(org.hibernate.SessionFactory, boolean)
,TransactionSynchronizationManager
,SessionFactory.getCurrentSession()
字段概要
字段 修饰符和类型 字段 说明 static String
PARTICIPATE_SUFFIX
已过时。Suffix that gets appended to theSessionFactory
toString()
representation for the "participate in existing session handling" request attribute.从类继承的字段 org.springframework.orm.hibernate3.HibernateAccessor
FLUSH_ALWAYS, FLUSH_AUTO, FLUSH_COMMIT, FLUSH_EAGER, FLUSH_NEVER, logger
构造器概要
构造器 构造器 说明 OpenSessionInViewInterceptor()
已过时。Create a newOpenSessionInViewInterceptor
, turning the default flushMode toFLUSH_NEVER
.
方法概要
所有方法 实例方法 具体方法 已过时的方法 修饰符和类型 方法 说明 void
afterCompletion(WebRequest request, Exception ex)
已过时。Unbind the HibernateSession
from the thread and close it (in single session mode), or process deferred close for all sessions that have been opened during the current request (in deferred close mode).void
afterConcurrentHandlingStarted(WebRequest request)
已过时。Called instead ofpostHandle
andafterCompletion
, when the the handler started handling the request concurrently.protected String
getParticipateAttributeName()
已过时。Return the name of the request attribute that identifies that a request is already intercepted.protected boolean
isSingleSession()
已过时。Return whether to use a single session for each request.void
postHandle(WebRequest request, ModelMap model)
已过时。Flush the HibernateSession
before view rendering, if necessary.void
preHandle(WebRequest request)
已过时。Open a new HibernateSession
according to the settings of thisHibernateAccessor
and bind it to the thread via theTransactionSynchronizationManager
.void
setSingleSession(boolean singleSession)
已过时。Set whether to use a single session for each request.从类继承的方法 org.springframework.orm.hibernate3.HibernateAccessor
afterPropertiesSet, applyFlushMode, convertHibernateAccessException, convertJdbcAccessException, convertJdbcAccessException, disableFilters, enableFilters, flushIfNecessary, getDefaultJdbcExceptionTranslator, getEntityInterceptor, getFilterNames, getFlushMode, getJdbcExceptionTranslator, getSessionFactory, setBeanFactory, setEntityInterceptor, setEntityInterceptorBeanName, setFilterName, setFilterNames, setFlushMode, setFlushModeName, setJdbcExceptionTranslator, setSessionFactory
字段详细资料
PARTICIPATE_SUFFIX
public static final String PARTICIPATE_SUFFIX
已过时。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()
已过时。Create a newOpenSessionInViewInterceptor
, turning the default flushMode toFLUSH_NEVER
.
方法详细资料
setSingleSession
public void setSingleSession(boolean singleSession)
已过时。Set whether to use a single session for each request. Default is "true".If set to false, each data access operation or transaction will use its own session (like without Open Session in View). Each of those sessions will be registered for deferred close, though, actually processed at request completion.
isSingleSession
protected boolean isSingleSession()
已过时。Return whether to use a single session for each request.
preHandle
public void preHandle(WebRequest request) throws DataAccessException
已过时。Open a new HibernateSession
according to the settings of thisHibernateAccessor
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
- 另请参阅:
SessionFactoryUtils.getSession(org.hibernate.SessionFactory, boolean)
postHandle
public void postHandle(WebRequest request, ModelMap model) throws DataAccessException
已过时。Flush the HibernateSession
before view rendering, if necessary.Note that this just applies in
single session mode
!The default is
FLUSH_NEVER
to avoid this extra flushing, assuming that service layer transactions have flushed their changes on commit.- 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.- 抛出:
DataAccessException
- 另请参阅:
HibernateAccessor.setFlushMode(int)
afterCompletion
public void afterCompletion(WebRequest request, Exception ex) throws DataAccessException
已过时。Unbind the HibernateSession
from the thread and close it (in single session mode), or process deferred close for all sessions that have been opened during the current request (in deferred close mode).- 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)
已过时。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
getParticipateAttributeName
protected String getParticipateAttributeName()
已过时。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
.