org.objectweb.cjdbc.controller.connection
Class SimpleConnectionManager

java.lang.Object
  org.objectweb.cjdbc.controller.connection.AbstractConnectionManager
      org.objectweb.cjdbc.controller.connection.SimpleConnectionManager

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable, XmlComponent

public class SimpleConnectionManager

extends AbstractConnectionManager

implements java.io.Serializable

This connection manager creates a new Connection every time the getConnection()method is called.

Version:

1.0

Author:

Emmanuel Cecchet , Nicolas Modrzyk

See Also:

Serialized Form

Field Summary

private int

nbOfConnections

Fields inherited from class org.objectweb.cjdbc.controller.connection.AbstractConnectionManager

backendName, backendUrl, driverClassName, driverPath, initialized, logger, rLogin, rPassword

Fields inherited from interface org.objectweb.cjdbc.common.xml.XmlComponent

DOCTYPE_DB, XML_VERSION

Constructor Summary

SimpleConnectionManager(java.lang.String backendUrl, java.lang.String backendName, java.lang.String login, java.lang.String password, java.lang.String driverPath, java.lang.String driverClassName)
Creates a new SimpleConnectionManager instance.

Method Summary

private void	addConnection()
protected java.lang.Object	clone()
void	deleteConnection(java.sql.Connection c) Delete a connection that is no more valid.
void	finalizeConnections() Does nothing.
java.sql.Connection	getConnection() Gets a new connection from the underlying driver.
int	getCurrentNumberOfConnections() Get the current number of connections open for this connection manager.
java.lang.String	getXmlImpl() Gets xml formatted information on this connection manager
void	initializeConnections() Does nothing.
void	releaseConnection(java.sql.Connection connection) Closes the connection.
private void	removeConnection()

Methods inherited from class org.objectweb.cjdbc.controller.connection.AbstractConnectionManager

copy, deleteConnection, finalize, getConnection, getConnectionFromDriver, getDriverClassName, getDriverPath, getLogin, getPassword, getVLogin, getXml, isInitialized, releaseConnection, retrieveConnection, setDriverClassName, setDriverPath, setLogin, setPassword, setVLogin

Methods inherited from class java.lang.Object

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

Field Detail

nbOfConnections

private int nbOfConnections

Constructor Detail

SimpleConnectionManager

public SimpleConnectionManager(java.lang.String backendUrl,
                               java.lang.String backendName,
                               java.lang.String login,
                               java.lang.String password,
                               java.lang.String driverPath,
                               java.lang.String driverClassName)

Creates a new SimpleConnectionManager instance.

Parameters:

backendUrl - URL of the DatabaseBackend owning this connection manager.

backendName - name of the DatabaseBackend owning this connection manager.

login - backend connection login to be used by this connection manager.

password - backend connection password to be used by this connection manager.

driverPath - path for driver

driverClassName - class name for driver

Method Detail

clone

protected java.lang.Object clone()
                          throws java.lang.CloneNotSupportedException

Specified by:

clone in class AbstractConnectionManager

Throws:

java.lang.CloneNotSupportedException

See Also:

Object.clone()

initializeConnections

public void initializeConnections()
                           throws java.sql.SQLException

Does nothing.

Specified by:

initializeConnections in class AbstractConnectionManager

Throws:

java.sql.SQLException - if an error occurs.

See Also:

AbstractConnectionManager.initializeConnections()

finalizeConnections

public void finalizeConnections()
                         throws java.sql.SQLException

Does nothing.

Specified by:

finalizeConnections in class AbstractConnectionManager

Throws:

java.sql.SQLException - if an error occurs.

See Also:

AbstractConnectionManager.finalizeConnections()

getConnection

public java.sql.Connection getConnection()
                                  throws UnreachableBackendException

Gets a new connection from the underlying driver.

Specified by:

getConnection in class AbstractConnectionManager

Returns:

a Connection or null if no connection is available or if the connection has not been initialized.

Throws:

UnreachableBackendException - if the backend must be disabled

See Also:

AbstractConnectionManager.getConnection()

releaseConnection

public void releaseConnection(java.sql.Connection connection)

Closes the connection.

Specified by:

releaseConnection in class AbstractConnectionManager

Parameters:

connection - the connection to release.

See Also:

AbstractConnectionManager.releaseConnection(Connection)

deleteConnection

public void deleteConnection(java.sql.Connection c)

Description copied from class: AbstractConnectionManager

Delete a connection that is no more valid.

Specified by:

deleteConnection in class AbstractConnectionManager

Parameters:

c - the connection to delete.

See Also:

AbstractConnectionManager.deleteConnection(Connection)

getCurrentNumberOfConnections

public int getCurrentNumberOfConnections()

Description copied from class: AbstractConnectionManager

Get the current number of connections open for this connection manager.

Specified by:

getCurrentNumberOfConnections in class AbstractConnectionManager

Returns:

the current number of open connections

See Also:

AbstractConnectionManager.getCurrentNumberOfConnections()

addConnection

private void addConnection()

removeConnection

private void removeConnection()

getXmlImpl

public java.lang.String getXmlImpl()

Description copied from class: AbstractConnectionManager

Gets xml formatted information on this connection manager

Specified by:

getXmlImpl in class AbstractConnectionManager

Returns:

xml formatted string that conforms to c-jdbc.dtd

See Also:

AbstractConnectionManager.getXmlImpl()