org.springframework.jdbc.datasource
Class DriverManagerDataSource

java.lang.Object
  org.springframework.jdbc.datasource.AbstractDataSource
      org.springframework.jdbc.datasource.DriverManagerDataSource

All Implemented Interfaces:

Wrapper, CommonDataSource, DataSource

Direct Known Subclasses:

SingleConnectionDataSource

public class DriverManagerDataSource
extends AbstractDataSource

Simple implementation of the standard JDBC DataSource interface, configuring a plain old JDBC Driver via bean properties, and returning a new Connection for every getConnection call.

NOTE: This class is not an actual connection pool; it does not actually pool Connections. It just serves as simple replacement for a full-blown connection pool, implementing the same standard interface, but creating new Connections on every call.

Useful for test or standalone environments outside of a J2EE container, either as a DataSource bean in a corresponding ApplicationContext or in conjunction with a simple JNDI environment. Pool-assuming Connection.close() calls will simply close the Connection, so any DataSource-aware persistence code should work.

In a J2EE container, it is recommended to use a JNDI DataSource provided by the container. Such a DataSource can be exposed as a DataSource bean in a Spring ApplicationContext via JndiObjectFactoryBean, for seamless switching to and from a local DataSource bean like this class. For tests, you can then either set up a mock JNDI environment through Spring's SimpleNamingContextBuilder, or switch the bean definition to a local DataSource (which is simpler and thus recommended).

If you need a "real" connection pool outside of a J2EE container, consider Apache's Jakarta Commons DBCP or C3P0. Commons DBCP's BasicDataSource and C3P0's ComboPooledDataSource are full connection pool beans, supporting the same basic properties as this class plus specific settings (such as minimal/maximal pool size etc).

Commons DBCP's BasicDataSource can even be used as a direct replacement for an instance of this class just by changing the class name of the bean definition to "org.apache.commons.dbcp.BasicDataSource", because the names of all common properties match exactly. Note that both BasicDataSource and ComboPooledDataSource should be defined with destroy-method="close", for immediate shutdown when the Spring ApplicationContext shuts down.

Since:

14.03.2003

Author:

Juergen Hoeller

See Also:

JndiObjectFactoryBean, SimpleNamingContextBuilder, BasicDataSource, ComboPooledDataSource

Field Summary

Fields inherited from class org.springframework.jdbc.datasource.AbstractDataSource

logger

Constructor Summary

DriverManagerDataSource()
Constructor for bean-style configuration.

DriverManagerDataSource(String url)
Create a new DriverManagerDataSource with the given JDBC URL, not specifying a username or password for JDBC access.

DriverManagerDataSource(String url, String username, String password)
Create a new DriverManagerDataSource with the given standard DriverManager parameters.

DriverManagerDataSource(String driverClassName, String url, String username, String password)
Create a new DriverManagerDataSource with the given standard DriverManager parameters.

Method Summary

Connection	getConnection() This implementation delegates to getConnectionFromDriverManager, using the default username and password of this DataSource.
Connection	getConnection(String username, String password) This implementation delegates to getConnectionFromDriverManager, using the given username and password.
protected Connection	getConnectionFromDriverManager() Get a Connection from the DriverManager, using the default username and password of this DataSource.
protected Connection	getConnectionFromDriverManager(String url, Properties props) Getting a connection using the nasty static from DriverManager is extracted into a protected method to allow for easy unit testing.
protected Connection	getConnectionFromDriverManager(String username, String password) Build properties for the DriverManager, including the given username and password (if any).
Properties	getConnectionProperties() Return the connection properties to be passed to the DriverManager, if any.
String	getDriverClassName() Return the JDBC driver class name, if any.
String	getPassword() Return the JDBC password to use for accessing the DriverManager.
String	getUrl() Return the JDBC URL to use for accessing the DriverManager.
String	getUsername() Return the JDBC username to use for accessing the DriverManager.
void	setConnectionProperties(Properties connectionProperties) Specify arbitrary connection properties as key/value pairs, to be passed to the DriverManager.
void	setDriverClassName(String driverClassName) Set the JDBC driver class name.
void	setPassword(String password) Set the JDBC password to use for accessing the DriverManager.
void	setUrl(String url) Set the JDBC URL to use for accessing the DriverManager.
void	setUsername(String username) Set the JDBC username to use for accessing the DriverManager.

Methods inherited from class org.springframework.jdbc.datasource.AbstractDataSource

getLoginTimeout, getLogWriter, isWrapperFor, setLoginTimeout, setLogWriter, unwrap

Methods inherited from class java.lang.Object

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

Constructor Detail

DriverManagerDataSource

public DriverManagerDataSource()

Constructor for bean-style configuration.

DriverManagerDataSource

public DriverManagerDataSource(String driverClassName,
                               String url,
                               String username,
                               String password)

Create a new DriverManagerDataSource with the given standard DriverManager parameters.

Parameters:

driverClassName - the JDBC driver class name

url - the JDBC URL to use for accessing the DriverManager

username - the JDBC username to use for accessing the DriverManager

password - the JDBC password to use for accessing the DriverManager

See Also:

DriverManager.getConnection(String, String, String)

DriverManagerDataSource

public DriverManagerDataSource(String url,
                               String username,
                               String password)

Create a new DriverManagerDataSource with the given standard DriverManager parameters.

Parameters:

url - the JDBC URL to use for accessing the DriverManager

username - the JDBC username to use for accessing the DriverManager

password - the JDBC password to use for accessing the DriverManager

See Also:

DriverManager.getConnection(String, String, String)

DriverManagerDataSource

public DriverManagerDataSource(String url)

Create a new DriverManagerDataSource with the given JDBC URL, not specifying a username or password for JDBC access.

Parameters:

url - the JDBC URL to use for accessing the DriverManager

See Also:

DriverManager.getConnection(String)

Method Detail

setDriverClassName

public void setDriverClassName(String driverClassName)

Set the JDBC driver class name. This driver will get initialized on startup, registering itself with the JDK's DriverManager.

Alternatively, consider initializing the JDBC driver yourself before instantiating this DataSource.

See Also:

Class.forName(String), DriverManager.registerDriver(java.sql.Driver)

getDriverClassName

public String getDriverClassName()

Return the JDBC driver class name, if any.

setUrl

public void setUrl(String url)

Set the JDBC URL to use for accessing the DriverManager.

See Also:

DriverManager.getConnection(String, String, String)

getUrl

public String getUrl()

Return the JDBC URL to use for accessing the DriverManager.

setUsername

public void setUsername(String username)

Set the JDBC username to use for accessing the DriverManager.

See Also:

DriverManager.getConnection(String, String, String)

getUsername

public String getUsername()

Return the JDBC username to use for accessing the DriverManager.

setPassword

public void setPassword(String password)

Set the JDBC password to use for accessing the DriverManager.

See Also:

DriverManager.getConnection(String, String, String)

getPassword

public String getPassword()

Return the JDBC password to use for accessing the DriverManager.

setConnectionProperties

public void setConnectionProperties(Properties connectionProperties)

Specify arbitrary connection properties as key/value pairs, to be passed to the DriverManager.

Can also contain "user" and "password" properties. However, any "username" and "password" bean properties specified on this DataSource will override the corresponding connection properties.

See Also:

DriverManager.getConnection(String, java.util.Properties)

getConnectionProperties

public Properties getConnectionProperties()

Return the connection properties to be passed to the DriverManager, if any.

getConnection

public Connection getConnection()
                         throws SQLException

This implementation delegates to getConnectionFromDriverManager, using the default username and password of this DataSource.

Throws:

SQLException

See Also:

getConnectionFromDriverManager()

getConnection

public Connection getConnection(String username,
                                String password)
                         throws SQLException

This implementation delegates to getConnectionFromDriverManager, using the given username and password.

Throws:

SQLException

See Also:

getConnectionFromDriverManager(String, String)

getConnectionFromDriverManager

protected Connection getConnectionFromDriverManager()
                                             throws SQLException

Get a Connection from the DriverManager, using the default username and password of this DataSource.

Throws:

SQLException

See Also:

getConnectionFromDriverManager(String, String)

getConnectionFromDriverManager

protected Connection getConnectionFromDriverManager(String username,
                                                    String password)
                                             throws SQLException

Build properties for the DriverManager, including the given username and password (if any).

Throws:

SQLException

See Also:

getConnectionFromDriverManager(String, java.util.Properties)

getConnectionFromDriverManager

protected Connection getConnectionFromDriverManager(String url,
                                                    Properties props)
                                             throws SQLException

Getting a connection using the nasty static from DriverManager is extracted into a protected method to allow for easy unit testing.

Throws:

SQLException

See Also:

DriverManager.getConnection(String, java.util.Properties)