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

Direct Known Subclasses:

NamedParameterJdbcDaoSupport

public abstract class JdbcDaoSupport
extends DaoSupport

Convenient super class for JDBC-based data access objects.

Requires a DataSource to be set, providing a JdbcTemplate based on it to subclasses through the getJdbcTemplate() method.

This base class is mainly intended for JdbcTemplate usage but can also be used when working with a Connection directly or when using org.springframework.jdbc.object operation objects.

Since:

28.07.2003

Author:

Juergen Hoeller

See Also:

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

Field Summary

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

logger

Constructor Summary

Constructors

Constructor and Description
JdbcDaoSupport()

Method Summary

Modifier and Type	Method and Description
protected void	checkDaoConfig() Abstract subclasses must override this to check their configuration.
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	initTemplateConfig() Initialize the template-based configuration of this DAO.
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

@Nullable
public final DataSource getDataSource()

Return the JDBC DataSource used by this DAO.

setJdbcTemplate

public final void setJdbcTemplate(@Nullable
                                  JdbcTemplate jdbcTemplate)

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

getJdbcTemplate

@Nullable
public final JdbcTemplate getJdbcTemplate()

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

initTemplateConfig

protected void initTemplateConfig()

Initialize the template-based configuration of this DAO. Called after a new JdbcTemplate has been set, either directly or through a DataSource.

This implementation is empty. Subclasses may override this to configure further objects based on the JdbcTemplate.

See Also:

getJdbcTemplate()

checkDaoConfig

protected void checkDaoConfig()

Description copied from class: DaoSupport

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.

Specified by:

checkDaoConfig in class DaoSupport

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()

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)

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 - the Connection to close

See Also:

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