Class JdoInterceptor

  extended by org.springframework.orm.jdo.JdoAccessor
      extended by org.springframework.orm.jdo.JdoInterceptor
All Implemented Interfaces:
Advice, Interceptor, MethodInterceptor, InitializingBean

public class JdoInterceptor
extends JdoAccessor
implements MethodInterceptor

This interceptor binds a new JDO PersistenceManager 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 PersistenceManager (e.g. from JdoTransactionManager, or from a surrounding JDO-intercepted method), the interceptor simply participates in it.

Application code must retrieve a JDO PersistenceManager via the PersistenceManagerFactoryUtils.getPersistenceManager method, to be able to detect a thread-bound PersistenceManager. It is preferable to use getPersistenceManager with allowCreate=false, if the code relies on the interceptor to provide proper PersistenceManager handling. Typically, the code will look like as follows:

 public void doSomeDataAccessAction() {
   PersistenceManager pm = PersistenceManagerFactoryUtils.getPersistenceManager(this.pmf, false);

Note that this interceptor automatically translates JDOExceptions, via delegating to the PersistenceManagerFactoryUtils.convertJdoAccessException method that converts them to exceptions that are compatible with the org.springframework.dao exception hierarchy (like JdoTemplate does). This can be turned off if the raw exceptions are preferred.

This class can be considered a declarative alternative to JdoTemplate's callback approach. The advantages are:

The drawback is the dependency on interceptor configuration. However, note that this interceptor is usually not necessary in scenarios where the data access code always executes within transactions. A transaction will always have a thread-bound PersistenceManager in the first place, so adding this interceptor to the configuration just adds value when fine-tuning PersistenceManager settings like the flush mode - or when relying on exception translation.

Juergen Hoeller
See Also:
PersistenceManagerFactoryUtils.getPersistenceManager(javax.jdo.PersistenceManagerFactory, boolean), JdoTransactionManager, JdoTemplate

Field Summary
Fields inherited from class org.springframework.orm.jdo.JdoAccessor
Constructor Summary
Method Summary
 Object invoke(MethodInvocation methodInvocation)
 void setExceptionConversionEnabled(boolean exceptionConversionEnabled)
          Set whether to convert any JDOException raised to a Spring DataAccessException, compatible with the org.springframework.dao exception hierarchy.
Methods inherited from class org.springframework.orm.jdo.JdoAccessor
afterPropertiesSet, convertJdoAccessException, flushIfNecessary, getJdoDialect, getPersistenceManagerFactory, isFlushEager, setFlushEager, setJdoDialect, setPersistenceManagerFactory
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public JdoInterceptor()
Method Detail


public void setExceptionConversionEnabled(boolean exceptionConversionEnabled)
Set whether to convert any JDOException raised to a Spring DataAccessException, compatible with the org.springframework.dao exception hierarchy.

Default is "true". Turn this flag off to let the caller receive raw exceptions as-is, without any wrapping.

See Also:


public Object invoke(MethodInvocation methodInvocation)
              throws Throwable
Specified by:
invoke in interface MethodInterceptor

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