org.jvnet.hk2.config

Interface SingleConfigCode<T extends ConfigBeanProxy>

public interface SingleConfigCode<T extends ConfigBeanProxy>

SimpleConfigCode is code snippet that can be used to apply some configuration changes to one configuration object. For example say, you need to modify the HttpListener config object with a new port number, you can do so by writing the following code snippet. new SingleConfigCode<HttpListener>() { public boolean run(HttpListener httpListener) throws PropertyVetoException { httpListener.setPort("8989"); return true; } }; This new SingleConfigCode can then be used with in the ConfigSupport utilities to run this code within a Transaction freeing the developer to know/care about Transaction APIs and semantics.

Author:

Jerome Dochez

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	run(T param) Runs the following command passing the configration object.

Method Detail

run

java.lang.Object run(T param)
                     throws java.beans.PropertyVetoException,
                            TransactionFailure

Runs the following command passing the configration object. The code will be run within a transaction, returning true will commit the transaction, false will abort it.

Parameters:

param - is the configuration object protected by the transaction

Returns:

any object that should be returned from within the transaction code

Throws:

java.beans.PropertyVetoException - if the changes cannot be applied to the configuration

TransactionFailure