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Java Source Code / Java Documentation » Database JDBC Connection Pool » sequoia 2.10.9 » org.continuent.sequoia.controller.connection

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.continuent.sequoia.controller.connection .AbstractConnectionManager

org.continuent.sequoia.controller.connection .AbstractPoolConnectionManager

org.continuent.sequoia.controller.connection .VariablePoolConnectionManager

VariablePoolConnectionManager

public class VariablePoolConnectionManager extends AbstractPoolConnectionManager (Code)

This connection manager provides connection pooling with a dynamically adjustable pool size.

If the maximum number of active connections is not reached, the VariablePoolConnectionManager.getConnection() method creates a connection. Else, the execution is blocked until a connection is freed or the timeout expires. blocked until a connection is freed or the timeout expires.

Idle connections in the pool are removed after the timeout idleTimeout if the minimum pool size has not been reached.
author:
   Emmanuel Cecchet
author:
   Mathieu Peltier
author:
   Nicolas Modrzyk
version:
   1.0

Inner Class :protected class RemoveIdleConnectionsThread extends Thread

Constructor Summary
public	VariablePoolConnectionManager(String backendUrl, String backendName, String rLogin, String rPassword, String driverPath, String driverClassName, int minPoolSize, int maxPoolSize, int idleTimeout, int waitTimeout) Creates a new `VariablePoolConnectionManager` instance with the default minPoolSize(initial pool size to be initialized at startup). Parameters: backendUrl - URL of the `DatabaseBackend` owning thisconnection manager Parameters: backendName - name of the `DatabaseBackend` owning thisconnection manager Parameters: rLogin - backend connection login to be used by this connectionmanager Parameters: rPassword - backend connection password to be used by this connectionmanager Parameters: driverPath - path for driver Parameters: driverClassName - class name for driver Parameters: minPoolSize - minimum pool size. Parameters: maxPoolSize - maximum pool size.
public	VariablePoolConnectionManager(String backendUrl, String backendName, String rLogin, String rPassword, String driverPath, String driverClassName, int initPoolSize, int minPoolSize, int maxPoolSize, int idleTimeout, int waitTimeout) Creates a new `VariablePoolConnectionManager` instance. Parameters: backendUrl - URL of the `DatabaseBackend` owning thisconnection manager Parameters: backendName - name of the `DatabaseBackend` owning thisconnection manager Parameters: rLogin - backend connection login to be used by this connectionmanager Parameters: rPassword - backend connection password to be used by this connectionmanager Parameters: driverPath - path for driver Parameters: driverClassName - class name for driver Parameters: initPoolSize - initial pool size to be intialized at startup Parameters: minPoolSize - minimum pool size. Parameters: maxPoolSize - maximum pool size.

Method Summary
protected Object	clone()
public AbstractConnectionManager	clone(String rLogin, String rPassword)
public synchronized void	deleteConnection(PooledConnection c)
protected void	doConnectionFinalization()
protected void	doConnectionInitialization()
protected synchronized void	doConnectionInitialization(int initPoolSize)
public synchronized PooledConnection	getConnection() Gets a connection from the pool. If the current number of active connections is lower than the maximum pool size, a new connection is created.
public int	getIdleTimeout() Gets the idle timeout.
public int	getMaxPoolSize() Gets the max pool size.
public int	getMinPoolSize() Gets the min pool size.
public int	getWaitTimeout() Gets the wait timeout.
public String	getXmlImpl()
public void	releaseConnection(PooledConnection c)

Constructor Detail

VariablePoolConnectionManager
public VariablePoolConnectionManager(String backendUrl, String backendName, String rLogin, String rPassword, String driverPath, String driverClassName, int minPoolSize, int maxPoolSize, int idleTimeout, int waitTimeout)(Code)
	Creates a new `VariablePoolConnectionManager` instance with the default minPoolSize(initial pool size to be initialized at startup). Parameters: backendUrl - URL of the `DatabaseBackend` owning thisconnection manager Parameters: backendName - name of the `DatabaseBackend` owning thisconnection manager Parameters: rLogin - backend connection login to be used by this connectionmanager Parameters: rPassword - backend connection password to be used by this connectionmanager Parameters: driverPath - path for driver Parameters: driverClassName - class name for driver Parameters: minPoolSize - minimum pool size. Parameters: maxPoolSize - maximum pool size. 0 means no limit. Parameters: idleTimeout - time a connection can stay idle before begin released(removed from the pool) in seconds. 0 means no timeout: onceallocated, connections are never released. Parameters: waitTimeout - maximum time to wait for a connection in seconds. 0means no timeout: waits until one connection is freed.

VariablePoolConnectionManager
public VariablePoolConnectionManager(String backendUrl, String backendName, String rLogin, String rPassword, String driverPath, String driverClassName, int initPoolSize, int minPoolSize, int maxPoolSize, int idleTimeout, int waitTimeout)(Code)
	Creates a new `VariablePoolConnectionManager` instance. Parameters: backendUrl - URL of the `DatabaseBackend` owning thisconnection manager Parameters: backendName - name of the `DatabaseBackend` owning thisconnection manager Parameters: rLogin - backend connection login to be used by this connectionmanager Parameters: rPassword - backend connection password to be used by this connectionmanager Parameters: driverPath - path for driver Parameters: driverClassName - class name for driver Parameters: initPoolSize - initial pool size to be intialized at startup Parameters: minPoolSize - minimum pool size. Parameters: maxPoolSize - maximum pool size. 0 means no limit. Parameters: idleTimeout - time a connection can stay idle before begin released(removed from the pool) in seconds. 0 means no timeout: onceallocated, connections are never released. Parameters: waitTimeout - maximum time to wait for a connection in seconds. 0means no timeout: waits until one connection is freed.

Method Detail

clone
protected Object clone() throws CloneNotSupportedException(Code)
	See Also: java.lang.Object.clone

clone
public AbstractConnectionManager clone(String rLogin, String rPassword)(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.clone(StringString)

deleteConnection
public synchronized void deleteConnection(PooledConnection c)(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.deleteConnection(org.continuent.sequoia.controller.connection.PooledConnection)

doConnectionFinalization
protected void doConnectionFinalization() throws SQLException(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.doConnectionFinalization

doConnectionInitialization
protected void doConnectionInitialization() throws SQLException(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.doConnectionInitialization

doConnectionInitialization
protected synchronized void doConnectionInitialization(int initPoolSize) throws SQLException(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractPoolConnectionManager.doConnectionInitialization(int)

getConnection

public synchronized PooledConnection getConnection() throws UnreachableBackendException(Code)

Gets a connection from the pool.

If the current number of active connections is lower than the maximum pool size, a new connection is created. If the creation fails, this method waits for a connection to be freed.

If the maximum number of active connections is reached, this methods blocks until a connection is freed or the timeout expires. a connection from the pool or null if the timeouthas expired.
throws:
UnreachableBackendException - if the backend must be disabled
See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.getConnection

getIdleTimeout
public int getIdleTimeout()(Code)
	Gets the idle timeout. a `int` value.

getMaxPoolSize
public int getMaxPoolSize()(Code)
	Gets the max pool size. a `int` value.

getMinPoolSize
public int getMinPoolSize()(Code)
	Gets the min pool size. a `int` value.

getWaitTimeout
public int getWaitTimeout()(Code)
	Gets the wait timeout. a `int` value.

getXmlImpl
public String getXmlImpl()(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.getXmlImpl

releaseConnection
public void releaseConnection(PooledConnection c)(Code)
	See Also: org.continuent.sequoia.controller.connection.AbstractConnectionManager.releaseConnection(org.continuent.sequoia.controller.connection.PooledConnection)

Fields inherited from org.continuent.sequoia.controller.connection.AbstractPoolConnectionManager

protected transient ArrayList activeConnections(Code)(Java Doc)
protected transient LinkedList freeConnections(Code)(Java Doc)
protected int poolSize(Code)(Java Doc)

Methods inherited from org.continuent.sequoia.controller.connection.AbstractPoolConnectionManager

protected synchronized void doConnectionFinalization() throws SQLException(Code)(Java Doc)
protected synchronized void doConnectionInitialization() throws SQLException(Code)(Java Doc)
protected synchronized void doConnectionInitialization(int initPoolSize) throws SQLException(Code)(Java Doc)
public synchronized void flagAllConnectionsForRenewal()(Code)(Java Doc)
public int getCurrentNumberOfConnections()(Code)(Java Doc)
protected int initConnections(int initPoolSize)(Code)(Java Doc)
protected void releasePersistentConnection(PooledConnection c)(Code)(Java Doc)

Fields inherited from org.continuent.sequoia.controller.connection.AbstractConnectionManager

protected String backendName(Code)(Java Doc)
protected String backendUrl(Code)(Java Doc)
protected String connectionTestStatement(Code)(Java Doc)
protected String driverClassName(Code)(Java Doc)
protected String driverPath(Code)(Java Doc)
protected int idlePersistentConnectionPingInterval(Code)(Java Doc)
protected boolean idlePersistentConnectionPingRunning(Code)(Java Doc)
protected LinkedList idlePersistentConnections(Code)(Java Doc)
protected boolean initialized(Code)(Java Doc)
protected boolean isShutdown(Code)(Java Doc)
static Trace logger(Code)(Java Doc)
protected IdlePersistentConnectionsPingerThread persistentConnectionPingerThread(Code)(Java Doc)
protected transient Hashtable persistentConnections(Code)(Java Doc)
protected LinkedList persistentConnectionsIdleTime(Code)(Java Doc)
protected String rLogin(Code)(Java Doc)
protected String rPassword(Code)(Java Doc)

Methods inherited from org.continuent.sequoia.controller.connection.AbstractConnectionManager

abstract protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
abstract public AbstractConnectionManager clone(String rLogin, String rPassword)(Code)(Java Doc)
protected void closeConnection(PooledConnection connection)(Code)(Java Doc)
public AbstractConnectionManager copy(String url, String name) throws Exception(Code)(Java Doc)
abstract public void deleteConnection(PooledConnection connection)(Code)(Java Doc)
public void deleteConnection(long transactionId)(Code)(Java Doc)
public void deletePersistentConnection(long persistentConnectionId)(Code)(Java Doc)
abstract protected void doConnectionFinalization() throws SQLException(Code)(Java Doc)
abstract protected void doConnectionInitialization() throws SQLException(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final public void finalizeConnections() throws SQLException(Code)(Java Doc)
abstract public void flagAllConnectionsForRenewal()(Code)(Java Doc)
abstract protected PooledConnection getConnection() throws UnreachableBackendException(Code)(Java Doc)
public PooledConnection getConnectionForTransaction(long transactionId) throws UnreachableBackendException(Code)(Java Doc)
public Connection getConnectionFromDriver()(Code)(Java Doc)
abstract public int getCurrentNumberOfConnections()(Code)(Java Doc)
public String getDriverClassName()(Code)(Java Doc)
public String getDriverPath()(Code)(Java Doc)
public String getLogin()(Code)(Java Doc)
public String getPassword()(Code)(Java Doc)
public String getVLogin()(Code)(Java Doc)
public String getXml()(Code)(Java Doc)
abstract protected String getXmlImpl()(Code)(Java Doc)
final public void initializeConnections() throws SQLException(Code)(Java Doc)
public boolean isInitialized()(Code)(Java Doc)
protected void notifyPersistentConnectionPingerThread()(Code)(Java Doc)
public void registerConnectionForTransaction(PooledConnection c, long transactionId)(Code)(Java Doc)
abstract protected void releaseConnection(PooledConnection connection)(Code)(Java Doc)
public void releaseConnectionForTransaction(long transactionId)(Code)(Java Doc)
public void releaseConnectionInAutoCommit(AbstractRequest request, PooledConnection c)(Code)(Java Doc)
abstract protected void releasePersistentConnection(PooledConnection connection)(Code)(Java Doc)
public void releasePersistentConnectionInAutoCommit(long persistentConnectionId)(Code)(Java Doc)
public PooledConnection retrieveConnectionForTransaction(long transactionId)(Code)(Java Doc)
public PooledConnection retrieveConnectionInAutoCommit(AbstractRequest request) throws UnreachableBackendException(Code)(Java Doc)
public void setConnectionTestStatement(String connectionTestStatement)(Code)(Java Doc)
public void setVLogin(String login)(Code)(Java Doc)
public synchronized void shutdown()(Code)(Java Doc)
protected void stopPersistentConnectionPingerThread()(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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