org.apache.commons.dbcp
Class PoolingDataSource

java.lang.Object
  extended by org.apache.commons.dbcp.PoolingDataSource
All Implemented Interfaces:
Wrapper, CommonDataSource, DataSource
Direct Known Subclasses:
ManagedDataSource

public class PoolingDataSource
extends Object
implements DataSource

A simple DataSource implementation that obtains Connections from the specified ObjectPool.

Version:
$Revision: 892307 $ $Date: 2014-01-01 00:27:28 +0100 (Wed, 01 Jan 2014) $
Author:
Rodney Waldhoff, Glenn L. Nielsen, James House, Dirk Verbeeck

Field Summary
protected  PrintWriter _logWriter
          My log writer.
protected  ObjectPool _pool
           
 
Constructor Summary
PoolingDataSource()
           
PoolingDataSource(ObjectPool pool)
           
 
Method Summary
 Connection getConnection()
          Return a Connection from my pool, according to the contract specified by ObjectPool.borrowObject().
 Connection getConnection(String uname, String passwd)
          Throws UnsupportedOperationException
 int getLoginTimeout()
          Throws UnsupportedOperationException.
 PrintWriter getLogWriter()
          Returns my log writer.
 boolean isAccessToUnderlyingConnectionAllowed()
          Returns the value of the accessToUnderlyingConnectionAllowed property.
 boolean isWrapperFor(Class<?> iface)
           
 void setAccessToUnderlyingConnectionAllowed(boolean allow)
          Sets the value of the accessToUnderlyingConnectionAllowed property.
 void setLoginTimeout(int seconds)
          Throws UnsupportedOperationException.
 void setLogWriter(PrintWriter out)
          Sets my log writer.
 void setPool(ObjectPool pool)
           
<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

_logWriter

protected PrintWriter _logWriter
My log writer.


_pool

protected ObjectPool _pool
Constructor Detail

PoolingDataSource

public PoolingDataSource()

PoolingDataSource

public PoolingDataSource(ObjectPool pool)
Method Detail

setPool

public void setPool(ObjectPool pool)
             throws IllegalStateException,
                    NullPointerException
Throws:
IllegalStateException
NullPointerException

isAccessToUnderlyingConnectionAllowed

public boolean isAccessToUnderlyingConnectionAllowed()
Returns the value of the accessToUnderlyingConnectionAllowed property.

Returns:
true if access to the underlying is allowed, false otherwise.

setAccessToUnderlyingConnectionAllowed

public void setAccessToUnderlyingConnectionAllowed(boolean allow)
Sets the value of the accessToUnderlyingConnectionAllowed property. It controls if the PoolGuard allows access to the underlying connection. (Default: false)

Parameters:
allow - Access to the underlying connection is granted when true.

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
Specified by:
isWrapperFor in interface Wrapper
Throws:
SQLException

unwrap

public <T> T unwrap(Class<T> iface)
         throws SQLException
Specified by:
unwrap in interface Wrapper
Throws:
SQLException

getConnection

public Connection getConnection()
                         throws SQLException
Return a Connection from my pool, according to the contract specified by ObjectPool.borrowObject().

Specified by:
getConnection in interface DataSource
Throws:
SQLException

getConnection

public Connection getConnection(String uname,
                                String passwd)
                         throws SQLException
Throws UnsupportedOperationException

Specified by:
getConnection in interface DataSource
Throws:
UnsupportedOperationException
SQLException

getLogWriter

public PrintWriter getLogWriter()
Returns my log writer.

Specified by:
getLogWriter in interface CommonDataSource
Returns:
my log writer
See Also:
CommonDataSource.getLogWriter()

getLoginTimeout

public int getLoginTimeout()
Throws UnsupportedOperationException.

Specified by:
getLoginTimeout in interface CommonDataSource
Throws:
UnsupportedOperationException - As this implementation does not support this feature.

setLoginTimeout

public void setLoginTimeout(int seconds)
Throws UnsupportedOperationException.

Specified by:
setLoginTimeout in interface CommonDataSource
Throws:
UnsupportedOperationException - As this implementation does not support this feature.

setLogWriter

public void setLogWriter(PrintWriter out)
Sets my log writer.

Specified by:
setLogWriter in interface CommonDataSource
See Also:
CommonDataSource.setLogWriter(java.io.PrintWriter)


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