org.flowable.engine.common.impl.transaction

Class TransactionContextAwareDataSource

java.lang.Object

org.flowable.engine.common.impl.transaction.TransactionContextAwareDataSource

All Implemented Interfaces:

Wrapper, CommonDataSource, DataSource

public class TransactionContextAwareDataSource
extends Object
implements DataSource

A wrapper for a DataSource, to be used by a 'dependent' engine (e.g. IDM/DMN/Form, NOT the process engine). The process engine will have created a valid transaction context and typically opened a Connection. This implementation will check for such an active transaction context and reuse an existing context and connection, such that the transaction and connection is shared between engines. Note that this only applies to the 'standalone mybatis' engine setup.

Author:

Joram Barrez

Field Summary

Fields

Modifier and Type	Field and Description
protected DataSource	dataSource

Constructor Summary

Constructors

Constructor and Description
TransactionContextAwareDataSource(DataSource dataSource)

Method Summary

Modifier and Type	Method and Description
Connection	getConnection()
Connection	getConnection(String username, String password)
int	getLoginTimeout()
PrintWriter	getLogWriter()
Logger	getParentLogger()
boolean	isWrapperFor(Class<?> iface)
void	setLoginTimeout(int seconds)
void	setLogWriter(PrintWriter out)
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

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

Field Detail

dataSource

protected DataSource dataSource

Constructor Detail

TransactionContextAwareDataSource

public TransactionContextAwareDataSource(DataSource dataSource)

Method Detail

getConnection

public Connection getConnection()
                         throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getConnection

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

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getLogWriter

public PrintWriter getLogWriter()
                         throws SQLException

Specified by:

getLogWriter in interface CommonDataSource

Throws:

SQLException

setLogWriter

public void setLogWriter(PrintWriter out)
                  throws SQLException

Specified by:

setLogWriter in interface CommonDataSource

Throws:

SQLException

setLoginTimeout

public void setLoginTimeout(int seconds)
                     throws SQLException

Specified by:

setLoginTimeout in interface CommonDataSource

Throws:

SQLException

getLoginTimeout

public int getLoginTimeout()
                    throws SQLException

Specified by:

getLoginTimeout in interface CommonDataSource

Throws:

SQLException

getParentLogger

public Logger getParentLogger()
                       throws SQLFeatureNotSupportedException

Specified by:

getParentLogger in interface CommonDataSource

Throws:

SQLFeatureNotSupportedException

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Specified by:

unwrap in interface Wrapper

Throws:

SQLException

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Specified by:

isWrapperFor in interface Wrapper

Throws:

SQLException