2 * Copyright 2007 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.system.core;
19 * A component represents a part of a system that requires a
20 * number of interfaces and provides a number of interfaces.
22 * @author Erik Brakkee
24 public interface Component {
27 * Gets the name of the subsystem.
28 * @return Subsystem name.
33 * Prepends the context with a super context.
35 void addContext(String aContext);
38 * Gets the fully qualified name of the component which includes
39 * the context of the component.
40 * This method can only be used after the component has started.
41 * @return Qualified name.
43 String getQualifiedName();
46 * Gets a description of the provided interfaces.
47 * @return Provided interfaces.
49 ProvidedInterface[] getProvidedInterfaces();
52 * Gets a description of the required interfaces.
53 * @return Required interfaces.
55 RequiredInterface[] getRequiredInterfaces();
59 * Initialises the subsytem by starting all the services that
60 * it described as provided.
65 * Gets the list of running services in the subsystem.
67 * This method may only be called after the
68 * {@link #initialize(String, Service[])} has been called.
71 ProvidedInterface[] getRunningInterfaces();