org.apache.avalon.cornerstone.blocks.datasources
Class DefaultDataSourceSelector

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.avalon.cornerstone.blocks.datasources.DefaultDataSourceSelector

All Implemented Interfaces:

Configurable, Contextualizable, DataSourceSelector, Disposable, Initializable, LogEnabled, ServiceSelector

public class DefaultDataSourceSelector

extends AbstractLogEnabled

implements DataSourceSelector, Contextualizable, Configurable, Initializable, Disposable

A default implementation for DataSourceSelector. The Configuration is like this:

 <myBlock>
   <data-source name="default"
     class="org.apache.avalon.excalibur.datasource.JdbcDataSource">
     <!-- configuration for JdbcDataSource -->
     <pool-controller min="5" max="10" connection-class="my.overrided.ConnectionClass">
       <keep-alive>select 1</keep-alive>
     </pool-controller>
     <driver>com.database.jdbc.JdbcDriver</driver>
     <dburl>jdbc:driver://host/mydb</dburl>
     <user>username</user>
     <password>password</password>
   </data-source>
 </myBlock>
 

Author:

Avalon Development Team

Component:

name="data-source-selector" lifestyle="singleton"

Service Export:

type="org.apache.avalon.cornerstone.services.datasources.DataSourceSelector"

Field Summary

Fields inherited from interface org.apache.avalon.cornerstone.services.datasources.DataSourceSelector

ROLE

Constructor Summary

DefaultDataSourceSelector()

Method Summary

void	configure(Configuration configuration)
void	contextualize(Context context) Contextualization of the component by the container.
void	dispose()
void	initialize()
boolean	isSelectable(Object hint)
void	release(Object component)
Object	select(Object hint)

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

Constructor Detail

DefaultDataSourceSelector

public DefaultDataSourceSelector()

Method Detail

contextualize

public void contextualize(Context context)
                   throws ContextException

Contextualization of the component by the container.

Specified by:

contextualize in interface Contextualizable

Parameters:

context - the supplied context object

Throws:

ContextException

Context Entry:

key="urn:avalon:name" alias="block.name"

configure

public void configure(Configuration configuration)

Specified by:

configure in interface Configurable

Configuration Schema:

schema="relax-ng"

initialize

public void initialize()
                throws Exception

Specified by:

initialize in interface Initializable

Throws:

Exception

dispose

public void dispose()

Specified by:

dispose in interface Disposable

isSelectable

public boolean isSelectable(Object hint)

Specified by:

isSelectable in interface ServiceSelector

select

public Object select(Object hint)
              throws ServiceException

Specified by:

select in interface ServiceSelector

Throws:

ServiceException

release

public void release(Object component)

Specified by:

release in interface ServiceSelector