Package org.springframework.dao.support

Class DaoSupport

java.lang.Object

org.springframework.dao.support.DaoSupport

All Implemented Interfaces:

InitializingBean

Direct Known Subclasses:

HibernateDaoSupport, JdbcDaoSupport

public abstract class DaoSupport
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

Field Summary

Fields

Modifier and Type	Field	Description
protected final Log	logger	Logger available to subclasses.

Constructor Summary

Constructors

Constructor	Description
DaoSupport()

Method Summary

Modifier and Type	Method	Description
final void	afterPropertiesSet()	Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.
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 Details

logger

protected final Log logger

Logger available to subclasses.

Constructor Details

DaoSupport

public DaoSupport()

Method Details

afterPropertiesSet

public final void afterPropertiesSet()
                              throws IllegalArgumentException,
BeanInitializationException

Description copied from interface: InitializingBean

Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

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 if 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