org.sapia.ubik.net
Class ConnectionPool

java.lang.Object
  org.sapia.ubik.net.ConnectionPool

public class ConnectionPool
extends java.lang.Object

Implements a pool of Connection instances.

Author:

Yanick Duchesne 2002-08-09

Field Summary

protected int	_currentCount
protected ConnectionFactory	_fac
protected java.lang.String	_host
protected long	_lastUsageTime
protected int	_maxSize
protected int	_port
protected java.rmi.server.RMIClientSocketFactory	_socketFactory
static long	DEFAULT_ACQUIRE_TIME_OUT

Constructor Summary

ConnectionPool(java.lang.String host, int port, ConnectionFactory fac, java.rmi.server.RMIClientSocketFactory socketFactory)

ConnectionPool(java.lang.String host, int port, ConnectionFactory fac, java.rmi.server.RMIClientSocketFactory socketFactory, int maxSize)

ConnectionPool(java.lang.String host, int port, int maxSize, java.rmi.server.RMIClientSocketFactory socketFactory)

ConnectionPool(java.lang.String host, int port, java.rmi.server.RMIClientSocketFactory socketFactory)

Method Summary

Connection	acquire()
Connection	acquire(long timeout)
int	getCount()
long	getLastUsageTime() Returns the time an object was last acquired from this pool.
protected Connection	newConnection()
void	release(Connection conn)
void	shrinkTo(int size) Shrinks the pool to the specified size, or until the pool is empty.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ACQUIRE_TIME_OUT

public static final long DEFAULT_ACQUIRE_TIME_OUT

See Also:

Constant Field Values

_fac

protected ConnectionFactory _fac

_host

protected java.lang.String _host

_port

protected int _port

_maxSize

protected int _maxSize

_currentCount

protected int _currentCount

_lastUsageTime

protected long _lastUsageTime

_socketFactory

protected java.rmi.server.RMIClientSocketFactory _socketFactory

Constructor Detail

ConnectionPool

public ConnectionPool(java.lang.String host,
                      int port,
                      ConnectionFactory fac,
                      java.rmi.server.RMIClientSocketFactory socketFactory)

ConnectionPool

public ConnectionPool(java.lang.String host,
                      int port,
                      ConnectionFactory fac,
                      java.rmi.server.RMIClientSocketFactory socketFactory,
                      int maxSize)

ConnectionPool

public ConnectionPool(java.lang.String host,
                      int port,
                      java.rmi.server.RMIClientSocketFactory socketFactory)

ConnectionPool

public ConnectionPool(java.lang.String host,
                      int port,
                      int maxSize,
                      java.rmi.server.RMIClientSocketFactory socketFactory)

Method Detail

acquire

public Connection acquire()
                   throws java.io.IOException

Throws:

java.io.IOException

acquire

public Connection acquire(long timeout)
                   throws java.io.IOException

Throws:

java.io.IOException

release

public void release(Connection conn)

getCount

public int getCount()

getLastUsageTime

public long getLastUsageTime()

Returns the time an object was last acquired from this pool.

shrinkTo

public void shrinkTo(int size)

Shrinks the pool to the specified size, or until the pool is empty.

Parameters:

size - the size to which to shrink the pool.

newConnection

protected Connection newConnection()
                            throws java.io.IOException

Throws:

java.io.IOException