org.springframework.jdbc.core.support
Class JdbcDaoSupport

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

All Implemented Interfaces:

InitializingBean

public abstract class JdbcDaoSupport
extends DaoSupport

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

Fields inherited from class org.springframework.dao.support.DaoSupport

logger

Constructor Summary

JdbcDaoSupport()

Method Summary

protected void	checkDaoConfig() Abstract subclasses must override this to check their configuration.
protected void	closeConnectionIfNecessary(Connection con) Deprecated. in favor of releaseConnection
protected JdbcTemplate	createJdbcTemplate(DataSource dataSource) Create a JdbcTemplate for the given DataSource.
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	releaseConnection(Connection con) Close the given JDBC Connection, created via this DAO's DataSource, if it isn't bound to the thread.
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 org.springframework.dao.support.DaoSupport

afterPropertiesSet, initDao

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcDaoSupport

public JdbcDaoSupport()

Method Detail

setDataSource

public final void setDataSource(DataSource dataSource)

Set the JDBC DataSource to be used by this DAO.

createJdbcTemplate

protected JdbcTemplate createJdbcTemplate(DataSource dataSource)

Create a JdbcTemplate for the given DataSource. Only invoked if populating the DAO with a DataSource reference!

Can be overridden in subclasses to provide a JdbcTemplate instance with different configuration, or a custom JdbcTemplate subclass.

Parameters:

dataSource - the JDBC DataSource to create a JdbcTemplate for

Returns:

the new JdbcTemplate instance

See Also:

setDataSource(javax.sql.DataSource)

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.

checkDaoConfig

protected final void checkDaoConfig()

Description copied from class: DaoSupport

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.

Specified by:

checkDaoConfig in class DaoSupport

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

See Also:

DataSourceUtils.getConnection(javax.sql.DataSource)

getExceptionTranslator

protected final SQLExceptionTranslator getExceptionTranslator()

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

See Also:

JdbcAccessor.getExceptionTranslator()

closeConnectionIfNecessary

protected final void closeConnectionIfNecessary(Connection con)

Deprecated. in favor of releaseConnection

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

See Also:

releaseConnection(java.sql.Connection)

releaseConnection

protected final void releaseConnection(Connection con)

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

Parameters:

con - Connection to close

See Also:

DataSourceUtils.releaseConnection(java.sql.Connection, javax.sql.DataSource)