Example usage for java.beans.beancontext BeanContextServices getService

Introduction

In this page you can find the example usage for java.beans.beancontext BeanContextServices getService.

Prototype

Object getService(BeanContextChild child, Object requestor, Class<?> serviceClass, Object serviceSelector,
        BeanContextServiceRevokedListener bcsrl) throws TooManyListenersException;

Source Link

Document

A BeanContextChild , or any arbitrary object associated with a BeanContextChild , may obtain a reference to a currently registered service from its nesting BeanContextServices via invocation of this method.

Usage

From source file:DocumentTester.java

/**
 * Called when this bean detects that a new service has been registered with
 * its context.//from  ww  w. j  a v a2s  .  com
 * 
 * @param bcsae
 *            the BeanContextServiceAvailableEvent
 */
public void serviceAvailable(BeanContextServiceAvailableEvent bcsae) {
    System.out.println("[Detected a service being added to the context]");

    // Get a reference to the context
    BeanContextServices context = bcsae.getSourceAsBeanContextServices();
    System.out.println("Is the context offering a WordCount service? " + context.hasService(WordCount.class));

    // Use the service, if it's available
    if (context.hasService(WordCount.class)) {
        System.out.println("Attempting to use the service...");
        try {
            WordCount service = (WordCount) context.getService(this, this, WordCount.class, document, this);
            System.out.println("Got the service!");
            service.countWords();
        } catch (Exception e) {
        }
    }
}

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