| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.dm; |
| |
| /** |
| * Component states. Any state listeners registered using @link {@link Component#add(ComponentStateListener)} method |
| * are notified with the following stated whenever the component state changes. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public enum ComponentState { |
| /** |
| * The component is not currently started, and is inactive. |
| */ |
| INACTIVE, |
| |
| /** |
| * The component is waiting for some required dependencies defined in the Activator. |
| * At this point the component has not yet been called in its init callback. |
| */ |
| WAITING_FOR_REQUIRED, |
| |
| /** |
| * The component is instantiated and waiting for dynamic required dependencies defined in init callback. |
| */ |
| INSTANTIATED_AND_WAITING_FOR_REQUIRED, |
| |
| /** |
| * The component is starting. At this point, all required dependencies have been injected (including |
| * dynamic dependencies added from the init method), but the start callback has not yet been called and |
| * the service has not been registered yet. |
| */ |
| STARTING, |
| |
| /** |
| * The component has been called in its started callback. At this point, the component has not yet been registered |
| * in the service registry. |
| */ |
| STARTED, |
| |
| /** |
| * The component is started. At this point, the component:<p> |
| * <ul> |
| * <li> has been called in its start callback |
| * <li> the optional dependency callbacks have been invoked (if some optional dependencies are available) |
| * <li> and the service has been registered |
| * </ul> |
| */ |
| TRACKING_OPTIONAL, |
| |
| /** |
| * the component is stopping. At this point, the service is still registered. |
| */ |
| STOPPING, |
| |
| /** |
| * the component is stopped. At this point, the service has been unregistered. |
| */ |
| STOPPED |
| } |