com.groiss.component
Class ApplicationContext

java.lang.Object
  com.groiss.component.ApplicationContext

public class ApplicationContext
extends java.lang.Object

Handling dependencies between applications. Register and retrieve services. Register a service with the method registerService, retrieve it with getService. Services can be objects containing data or methods, urls. etc. More than one application can register the same service. A preference value is used to select the "best" implementation - the one with the highest number. Normally, not more than two registrations of a service should exist: A default value in the application that needs the service and a full implementation in another application. It is a convention to give the default implementation the preference 10, the full implementation the preference 100.

Constructor Summary

ApplicationContext()

Method Summary

static java.lang.Object	getService(java.lang.String serviceid) Get a service by id.
static void	registerService(java.lang.String serviceid, java.lang.Object service, int preference) Register a service.

Methods inherited from class java.lang.Object

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

Constructor Detail

ApplicationContext

public ApplicationContext()

Method Detail

getService

public static java.lang.Object getService(java.lang.String serviceid)

Get a service by id.

registerService

public static void registerService(java.lang.String serviceid,
                                   java.lang.Object service,
                                   int preference)

Register a service.