org.apache.avalon.excalibur.datasource.ids

Class AbstractDataSourceIdGenerator

java.lang.Object

org.apache.avalon.framework.logger.AbstractLogEnabled

org.apache.avalon.excalibur.datasource.ids.AbstractIdGenerator

org.apache.avalon.excalibur.datasource.ids.AbstractDataSourceIdGenerator

All Implemented Interfaces:

IdGenerator, org.apache.avalon.framework.activity.Disposable, org.apache.avalon.framework.activity.Initializable, org.apache.avalon.framework.component.Component, org.apache.avalon.framework.configuration.Configurable, org.apache.avalon.framework.logger.LogEnabled, org.apache.avalon.framework.service.Serviceable, org.apache.avalon.framework.thread.ThreadSafe

Direct Known Subclasses:

AbstractDataSourceBlockIdGenerator, SequenceIdGenerator

public abstract class AbstractDataSourceIdGenerator
extends AbstractIdGenerator
implements org.apache.avalon.framework.service.Serviceable, org.apache.avalon.framework.configuration.Configurable, org.apache.avalon.framework.activity.Initializable, org.apache.avalon.framework.activity.Disposable

Since:

4.1

Version:

CVS $Revision: 1.4 $ $Date: 2004/02/28 11:47:17 $

Author:

Avalon Development Team

Field Summary

Fields

Modifier and Type	Field and Description
protected int	m_allocated Number of allocated Ids remaining before another block must be allocated.
protected DataSourceComponent	m_dataSource
private java.lang.String	m_dataSourceName
private org.apache.avalon.framework.service.ServiceSelector	m_dbSelector
protected long	m_nextId

Fields inherited from interface org.apache.avalon.excalibur.datasource.ids.IdGenerator

ROLE

Constructor Summary

Constructors

Constructor and Description
AbstractDataSourceIdGenerator()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(org.apache.avalon.framework.configuration.Configuration configuration) Called by the Container to configure the component.
void	dispose() Called by the Container to dispose the component.
protected java.sql.Connection	getConnection() Allocates a connection for the caller.
void	initialize() Called by the Container to initialize the component.
void	service(org.apache.avalon.framework.service.ServiceManager manager) Called by the Container to tell the component which ComponentLocator is controlling it.

Methods inherited from class org.apache.avalon.excalibur.datasource.ids.AbstractIdGenerator

getNextBigDecimalId, getNextBigDecimalIdInner, getNextByteId, getNextIntegerId, getNextLongId, getNextLongIdChecked, getNextLongIdInner, getNextShortId, isUsingBigDecimals, setUseBigDecimals

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Field Detail

m_dataSourceName

private java.lang.String m_dataSourceName

m_dbSelector

private org.apache.avalon.framework.service.ServiceSelector m_dbSelector

m_dataSource

protected DataSourceComponent m_dataSource

m_allocated

protected int m_allocated

Number of allocated Ids remaining before another block must be allocated.

m_nextId

protected long m_nextId

Constructor Detail

AbstractDataSourceIdGenerator

public AbstractDataSourceIdGenerator()

Method Detail

getConnection

protected java.sql.Connection getConnection()
                                     throws java.sql.SQLException

Allocates a connection for the caller. The connection must be closed by the caller when no longer needed.

Returns:

an open DB connection.

Throws:

java.sql.SQLException - if the connection can not be obtained for any reason.

service

public void service(org.apache.avalon.framework.service.ServiceManager manager)
             throws org.apache.avalon.framework.service.ServiceException

Called by the Container to tell the component which ComponentLocator is controlling it.

Specified by:

service in interface org.apache.avalon.framework.service.Serviceable

Parameters:

manager - which curently owns the component.

Throws:

org.apache.avalon.framework.service.ServiceException

configure

public void configure(org.apache.avalon.framework.configuration.Configuration configuration)
               throws org.apache.avalon.framework.configuration.ConfigurationException

Called by the Container to configure the component.

Specified by:

configure in interface org.apache.avalon.framework.configuration.Configurable

Parameters:

configuration - configuration info used to setup the component.

Throws:

org.apache.avalon.framework.configuration.ConfigurationException - if there are any problems with the configuration.

initialize

public void initialize()
                throws java.lang.Exception

Called by the Container to initialize the component.

Specified by:

initialize in interface org.apache.avalon.framework.activity.Initializable

Throws:

java.lang.Exception - if there were any problems durring initialization.

dispose

public void dispose()

Called by the Container to dispose the component.

Specified by:

dispose in interface org.apache.avalon.framework.activity.Disposable