home *** CD-ROM | disk | FTP | other *** search
Java Source | 1998-03-20 | 2.0 KB | 65 lines |
- /*
- * @(#)BeanContextServiceProvider.java 1.3 98/03/18
- *
- * Copyright 1998 by Sun Microsystems, Inc.,
- * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
- * All rights reserved.
- *
- * This software is the confidential and proprietary information
- * of Sun Microsystems, Inc. ("Confidential Information"). You
- * shall not disclose such Confidential Information and shall use
- * it only in accordance with the terms of the license agreement
- * you entered into with Sun.
- */
-
- package java.beans.beancontext;
-
- import java.util.Iterator;
-
- /**
- * <p>
- * One of the primary functions of a BeanContext is to act a as rendezvous
- * between JavaBeans, and BeanContextServiceProviders.
- * </p>
- * <p>
- * A JavaBean nested within a BeanContext, may ask that BeanContext to
- * provide an instance of a "service", based upon a reference to a Java
- * Class object that represents that service.
- * </p>
- * <p>
- * If such a service has been registered with the context, or one of its
- * nesting context's, in the case where a context delegate to its context
- * to satisfy a service request, then the BeanContextServiceProvider associated with
- * the service is asked to provide an instance of that service.
- * </p>
- * <p>
- * The ServcieProvider may always return the same instance, or it may
- * construct a new instance for each request.
- * </p>
- */
-
- public interface BeanContextServiceProvider {
-
- /**
- * request an instance of a service,
- *
- * @param requestor The object requesting the service
- * @param serviceClass The service requested
- * @param serviceSelector Additional parameterisation of the service
- */
-
- Object getService(BeanContextServices bcs, Object requestor, Class serviceClass, Object serviceSelector);
-
- /**
- * release the service
- */
-
- public void releaseService(BeanContextServices bcs, Object requestor, Object service);
-
- /**
- * @return the current service selectors for the specified serviceClass
- */
-
- Iterator getCurrentServiceSelectors(BeanContextServices bcs, Class serviceClass);
- }
-