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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.jdbc.datasource

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.springframework.jdbc.datasource .DelegatingDataSource

org.springframework.jdbc.datasource .UserCredentialsDataSourceAdapter

org.springframework.jdbc.datasource .IsolationLevelDataSourceAdapter

org.springframework.jdbc.datasource .WebSphereDataSourceAdapter

WebSphereDataSourceAdapter

public class WebSphereDataSourceAdapter extends IsolationLevelDataSourceAdapter (Code)

DataSource implementation that delegates all calls to a WebSphere target DataSource , typically obtained from JNDI, applying a current isolation level and/or current user credentials to every Connection obtained from it.

Uses IBM-specific API to get a JDBC Connection with a specific isolation level (and read-only flag) from a WebSphere DataSource (IBM code example). Supports the transaction-specific isolation level exposed by org.springframework.transaction.support.TransactionSynchronizationManager.getCurrentTransactionIsolationLevel . It's also possible to specify a default isolation level, to be applied when the current Spring-managed transaction does not define a specific isolation level.

Usage example, defining the target DataSource as an inner-bean JNDI lookup (of course, you can link to any WebSphere DataSource through a bean reference):

 <bean id="myDataSource" class="org.springframework.jdbc.datasource.WebSphereDataSourceAdapter">
 <property name="targetDataSource">
 <bean class="org.springframework.jndi.JndiObjectFactoryBean">
 <property name="jndiName" value="jdbc/myds"/>
 </bean>
 </property>
 </bean>

Thanks to Ricardo Olivieri for submitting the original implementation of this approach!
author:
   Juergen Hoeller
author:
   Lari Hotari
author:
   Ricardo N. Olivieri
since:
   2.0.3
See Also:   com.ibm.websphere.rsadapter.JDBCConnectionSpec
See Also:   com.ibm.websphere.rsadapter.WSDataSource.getConnection(com.ibm.websphere.rsadapter.JDBCConnectionSpec)
See Also:   org.springframework.transaction.support.TransactionSynchronizationManager.getCurrentTransactionIsolationLevel
See Also:   org.springframework.transaction.support.TransactionSynchronizationManager.isCurrentTransactionReadOnly

Field Summary
final protected Log	logger

Constructor Summary
public	WebSphereDataSourceAdapter() This constructor retrieves the WebSphere JDBC connection spec API, so we can get obtain specific WebSphere Connections using reflection.

Method Summary
public void	afterPropertiesSet() Checks that the specified 'targetDataSource' actually is a WebSphere WSDataSource.
protected Object	createConnectionSpec(Integer isolationLevel, Boolean readOnlyFlag, String username, String password) Create a WebSphere `JDBCConnectionSpec` object for the given charateristics.
protected Connection	doGetConnection(String username, String password) Builds a WebSphere JDBCConnectionSpec object for the current settings and calls `WSDataSource.getConnection(JDBCConnectionSpec)`.

Field Detail

logger
final protected Log logger(Code)

Constructor Detail

WebSphereDataSourceAdapter
public WebSphereDataSourceAdapter()(Code)
	This constructor retrieves the WebSphere JDBC connection spec API, so we can get obtain specific WebSphere Connections using reflection.

Method Detail

afterPropertiesSet
public void afterPropertiesSet()(Code)
	Checks that the specified 'targetDataSource' actually is a WebSphere WSDataSource.

createConnectionSpec
protected Object createConnectionSpec(Integer isolationLevel, Boolean readOnlyFlag, String username, String password) throws SQLException(Code)
	Create a WebSphere `JDBCConnectionSpec` object for the given charateristics. The default implementation uses reflection to apply the given settings. Can be overridden in subclasses to customize the JDBCConnectionSpec object (JDBCConnectionSpec javadoc; IBM developerWorks article). Parameters: isolationLevel - the isolation level to apply (or `null` if none) Parameters: readOnlyFlag - the read-only flag to apply (or `null` if none) Parameters: username - the username to apply (`null` or empty indicates the default) Parameters: password - the password to apply (may be `null` or empty) throws: SQLException - if thrown by JDBCConnectionSpec API methods See Also: com.ibm.websphere.rsadapter.JDBCConnectionSpec

doGetConnection
protected Connection doGetConnection(String username, String password) throws SQLException(Code)
	Builds a WebSphere JDBCConnectionSpec object for the current settings and calls `WSDataSource.getConnection(JDBCConnectionSpec)`. See Also: WebSphereDataSourceAdapter.createConnectionSpec See Also: com.ibm.websphere.rsadapter.WSDataSource.getConnection(com.ibm.websphere.rsadapter.JDBCConnectionSpec)

Methods inherited from org.springframework.jdbc.datasource.IsolationLevelDataSourceAdapter

protected Connection doGetConnection(String username, String password) throws SQLException(Code)(Java Doc)
protected Integer getCurrentIsolationLevel()(Code)(Java Doc)
protected Boolean getCurrentReadOnlyFlag()(Code)(Java Doc)
protected Integer getIsolationLevel()(Code)(Java Doc)
public void setIsolationLevel(int isolationLevel)(Code)(Java Doc)
final public void setIsolationLevelName(String constantName) throws IllegalArgumentException(Code)(Java Doc)

Methods inherited from org.springframework.jdbc.datasource.UserCredentialsDataSourceAdapter

protected Connection doGetConnection(String username, String password) throws SQLException(Code)(Java Doc)
public Connection getConnection() throws SQLException(Code)(Java Doc)
public Connection getConnection(String username, String password) throws SQLException(Code)(Java Doc)
public void removeCredentialsFromCurrentThread()(Code)(Java Doc)
public void setCredentialsForCurrentThread(String username, String password)(Code)(Java Doc)
public void setPassword(String password)(Code)(Java Doc)
public void setUsername(String username)(Code)(Java Doc)

Methods inherited from org.springframework.jdbc.datasource.DelegatingDataSource

public void afterPropertiesSet()(Code)(Java Doc)
public Connection getConnection() throws SQLException(Code)(Java Doc)
public Connection getConnection(String username, String password) throws SQLException(Code)(Java Doc)
public PrintWriter getLogWriter() throws SQLException(Code)(Java Doc)
public int getLoginTimeout() throws SQLException(Code)(Java Doc)
public DataSource getTargetDataSource()(Code)(Java Doc)
public boolean isWrapperFor(Class iface) throws SQLException(Code)(Java Doc)
public void setLogWriter(PrintWriter out) throws SQLException(Code)(Java Doc)
public void setLoginTimeout(int seconds) throws SQLException(Code)(Java Doc)
final public void setTargetDataSource(DataSource targetDataSource)(Code)(Java Doc)
public Object unwrap(Class iface) throws SQLException(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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