|
The Spring Framework | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.springframework.orm.hibernate.HibernateAccessor org.springframework.orm.hibernate.HibernateInterceptor
public class HibernateInterceptor
This interceptor binds a new Hibernate Session to the thread before a method call, closing and removing it afterwards in case of any method outcome. If there already is a pre-bound Session (e.g. from HibernateTransactionManager, or from a surrounding Hibernate-intercepted method), the interceptor simply participates in it.
Application code must retrieve a Hibernate Session via the
SessionFactoryUtils.getSession
method, to be able to detect a
thread-bound Session. It is preferable to use getSession
with
allowCreate=false, if the code relies on the interceptor to provide proper
Session handling. Typically, the code will look like as follows:
public void doSomeDataAccessAction() { Session session = SessionFactoryUtils.getSession(this.sessionFactory, false); try { ... } catch (HibernateException ex) { throw SessionFactoryUtils.convertHibernateAccessException(ex); } }Note that the application must care about handling HibernateExceptions itself, preferably via delegating to the
SessionFactoryUtils.convertHibernateAccessException
method that converts them to exceptions that are compatible with the
org.springframework.dao
exception hierarchy (like HibernateTemplate does).
Unfortunately, this interceptor cannot convert checked HibernateExceptions to unchecked dao ones transparently. The intercepted method would have to declare the checked HibernateException - thus the caller would still have to catch or rethrow it, even if it will never be thrown if intercepted. Any such exception will nevertheless get converted by default.
This class can be considered a declarative alternative to HibernateTemplate's callback approach. The advantages are:
The drawbacks are:
Note: Spring's Hibernate support in this package requires Hibernate 2.1.
Dedicated Hibernate3 support can be found in a separate package:
org.springframework.orm.hibernate3
.
SessionFactoryUtils.getSession(net.sf.hibernate.SessionFactory, boolean)
,
HibernateTransactionManager
,
HibernateTemplate
Field Summary |
---|
Fields inherited from class org.springframework.orm.hibernate.HibernateAccessor |
---|
FLUSH_AUTO, FLUSH_COMMIT, FLUSH_EAGER, FLUSH_NEVER, logger |
Constructor Summary | |
---|---|
HibernateInterceptor()
|
Method Summary | |
---|---|
protected net.sf.hibernate.Session |
getSession()
Return a Session for use by this interceptor. |
Object |
invoke(MethodInvocation methodInvocation)
|
void |
setExceptionConversionEnabled(boolean exceptionConversionEnabled)
Set whether to convert any HibernateException raised to a Spring DataAccessException, compatible with the org.springframework.dao exception hierarchy. |
Methods inherited from class org.springframework.orm.hibernate.HibernateAccessor |
---|
afterPropertiesSet, applyFlushMode, convertHibernateAccessException, convertJdbcAccessException, convertJdbcAccessException, flushIfNecessary, getEntityInterceptor, getFlushMode, getJdbcExceptionTranslator, getSessionFactory, setBeanFactory, setEntityInterceptor, setEntityInterceptorBeanName, 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 HibernateInterceptor()
Method Detail |
---|
public void setExceptionConversionEnabled(boolean exceptionConversionEnabled)
org.springframework.dao
exception hierarchy.
Default is "true". Turn this flag off to let the caller receive raw exceptions as-is, without any wrapping. Note that this means that the DAO methods will have to declare the checked HibernateException, and callers will be forced to handle it.
DataAccessException
public Object invoke(MethodInvocation methodInvocation) throws Throwable
invoke
in interface MethodInterceptor
Throwable
protected net.sf.hibernate.Session getSession()
|
The Spring Framework | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |