org.apache.openjpa.lib.jdbc
Class DelegatingDataSource

java.lang.Object
  org.apache.openjpa.lib.jdbc.DelegatingDataSource

All Implemented Interfaces:

Wrapper, CommonDataSource, DataSource, Closeable

Direct Known Subclasses:

DataSourceFactory.DefaultsDataSource, DecoratingDataSource

public abstract class DelegatingDataSource
extends Object
implements DataSource, Closeable

Wrapper around an existing data source. Subclasses can override the methods whose behavior they mean to change. The equals and hashCode methods pass through to the base underlying data store.

Author:

Abe White

Constructor Summary

DelegatingDataSource(DataSource ds)
Constructor.

Method Summary

protected void	appendInfo(StringBuffer buf)
void	close()
protected abstract void	enforceAbstract() Marker to enforce that subclasses of this class are abstract.
boolean	equals(Object other)
Connection	getConnection()
Connection	getConnection(String user, String pass)
DataSource	getDelegate() Return the wrapped data source.
DataSource	getInnermostDelegate() Return the inner-most wrapped delegate.
int	getLoginTimeout()
PrintWriter	getLogWriter()
int	hashCode()
boolean	isWrapperFor(Class iface)
static DelegatingDataSource	newInstance(DataSource ds) Constructor for the concrete implementation of this abstract class.
void	setLoginTimeout(int timeout)
void	setLogWriter(PrintWriter out)
String	toString()
Object	unwrap(Class iface)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DelegatingDataSource

public DelegatingDataSource(DataSource ds)

Constructor. Supply wrapped data source.

Method Detail

newInstance

public static DelegatingDataSource newInstance(DataSource ds)

Constructor for the concrete implementation of this abstract class.

enforceAbstract

protected abstract void enforceAbstract()

Marker to enforce that subclasses of this class are abstract.

getDelegate

public DataSource getDelegate()

Return the wrapped data source.

getInnermostDelegate

public DataSource getInnermostDelegate()

Return the inner-most wrapped delegate.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

appendInfo

protected void appendInfo(StringBuffer buf)

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

getLoginTimeout

public int getLoginTimeout()
                    throws SQLException

Specified by:

getLoginTimeout in interface CommonDataSource

Throws:

SQLException

setLoginTimeout

public void setLoginTimeout(int timeout)
                     throws SQLException

Specified by:

setLoginTimeout in interface CommonDataSource

Throws:

SQLException

getConnection

public Connection getConnection()
                         throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getConnection

public Connection getConnection(String user,
                                String pass)
                         throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

close

public void close()
           throws Exception

Specified by:

close in interface Closeable

Throws:

Exception

isWrapperFor

public boolean isWrapperFor(Class iface)

Specified by:

isWrapperFor in interface Wrapper

unwrap

public Object unwrap(Class iface)

Specified by:

unwrap in interface Wrapper