org.springframework.jdbc.core.support
Class JdbcDaoSupport

java.lang.Object
  org.springframework.jdbc.core.support.JdbcDaoSupport

All Implemented Interfaces:

InitializingBean

public abstract class JdbcDaoSupport

extends Object

implements InitializingBean

Convenient super class for JDBC data access objects. Requires a DataSource to be set, providing a JdbcTemplate based on it to subclasses.

This base class is mainly intended for JdbcTemplate usage but can also be used when working with DataSourceUtils directly or with org.springframework.jdbc.object classes.

Since:

28.07.2003

Author:

Juergen Hoeller

See Also:

setDataSource(javax.sql.DataSource), JdbcTemplate, DataSourceUtils

Field Summary

protected Log

logger

Constructor Summary

JdbcDaoSupport()

Method Summary

void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected void	closeConnectionIfNecessary(Connection con) Close the given JDBC Connection if necessary, created via this bean's DataSource, if it isn't bound to the thread.
protected Connection	getConnection() Get a JDBC Connection, either from the current transaction or a new one.
DataSource	getDataSource() Return the JDBC DataSource used by this DAO.
protected SQLExceptionTranslator	getExceptionTranslator() Return the SQLExceptionTranslator of this DAO's JdbcTemplate, for translating SQLExceptions in custom JDBC access code.
JdbcTemplate	getJdbcTemplate() Return the JdbcTemplate for this DAO, pre-initialized with the DataSource or set explicitly.
protected void	initDao() Subclasses can override this for custom initialization behavior.
void	setDataSource(DataSource dataSource) Set the JDBC DataSource to be used by this DAO.
void	setJdbcTemplate(JdbcTemplate jdbcTemplate) Set the JdbcTemplate for this DAO explicitly, as an alternative to specifying a DataSource.

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

Constructor Detail

JdbcDaoSupport

public JdbcDaoSupport()

Method Detail

setDataSource

public final void setDataSource(DataSource dataSource)

Set the JDBC DataSource to be used by this DAO.

getDataSource

public final DataSource getDataSource()

Return the JDBC DataSource used by this DAO.

setJdbcTemplate

public final void setJdbcTemplate(JdbcTemplate jdbcTemplate)

Set the JdbcTemplate for this DAO explicitly, as an alternative to specifying a DataSource.

getJdbcTemplate

public final JdbcTemplate getJdbcTemplate()

Return the JdbcTemplate for this DAO, pre-initialized with the DataSource or set explicitly.

afterPropertiesSet

public final void afterPropertiesSet()
                              throws Exception

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:

Exception - in the event of misconfiguration (such as failure to set an essential property) or if initialization fails.

initDao

protected void initDao()
                throws Exception

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

Throws:

Exception - if initialization fails

getConnection

protected final Connection getConnection()
                                  throws CannotGetJdbcConnectionException

Get a JDBC Connection, either from the current transaction or a new one.

Returns:

the JDBC Connection

Throws:

CannotGetJdbcConnectionException - if the attempt to get a Connection failed

getExceptionTranslator

protected final SQLExceptionTranslator getExceptionTranslator()

Return the SQLExceptionTranslator of this DAO's JdbcTemplate, for translating SQLExceptions in custom JDBC access code.

closeConnectionIfNecessary

protected final void closeConnectionIfNecessary(Connection con)

Close the given JDBC Connection if necessary, created via this bean's DataSource, if it isn't bound to the thread.

Parameters:

con - Connection to close