DaoSupport (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.dao.support
Class DaoSupport

java.lang.Object
  org.springframework.dao.support.DaoSupport

All Implemented Interfaces:: InitializingBean

Direct Known Subclasses:: CciDaoSupport, HibernateDaoSupport, HibernateDaoSupport, JdbcDaoSupport, JdoDaoSupport, PersistenceBrokerDaoSupport, SqlMapClientDaoSupport, SqlMapDaoSupport, TopLinkDaoSupport

public abstract class DaoSupport
extends Object
implements InitializingBean
extends Object
implements InitializingBean

Generic base class for DAOs, defining template methods for DAO initialization.

Extended by Spring's specific DAO support classes, such as: JdbcDaoSupport, JdoDaoSupport, etc.

Since:: 1.2.2
Author:: Juergen Hoeller
See Also:: JdbcDaoSupport, JdoDaoSupport

Field Summary

protected Log logger
          Logger available to subclasses

Constructor Summary

DaoSupport()


Method Summary

void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

protected abstract void checkDaoConfig()
          Abstract subclasses must override this to check their configuration.

protected void initDao()
          Concrete subclasses can override this for custom initialization behavior.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Summary
`protected Log`	`logger` Logger available to subclasses

Constructor Summary
`DaoSupport()`

Method Summary
`void`	`afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`protected abstract void`	`checkDaoConfig()` Abstract subclasses must override this to check their configuration.
`protected void`	`initDao()` Concrete subclasses can override this for custom initialization behavior.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

DaoSupport

public DaoSupport()

Method Detail

afterPropertiesSet

public final void afterPropertiesSet()
                              throws IllegalArgumentException,
                                     BeanInitializationException

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:: afterPropertiesSet in interface InitializingBean

Throws:: IllegalArgumentException; BeanInitializationException

checkDaoConfig

protected abstract void checkDaoConfig()
                                throws IllegalArgumentException

Abstract subclasses must override this to check their configuration.

Implementors should be marked as final, to make it clear that concrete subclasses are not supposed to override this template method themselves.

Throws:: IllegalArgumentException - in case of illegal configuration

initDao

protected void initDao()
                throws Exception

Concrete subclasses can override this for custom initialization behavior. Gets called after population of this instance's bean properties.

Throws:: Exception - if DAO initialization fails (will be rethrown as a BeanInitializationException)
See Also:: BeanInitializationException