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/*
* 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.tuscany.sca.node.spi;
import java.util.List;
import org.apache.tuscany.sca.assembly.Component;
import org.apache.tuscany.sca.core.assembly.ActivationException;
/**
* A set of operations for managing the components in a node
*
* @version $Rev: 552343 $ $Date: 2007-09-07 12:41:52 +0100 (Fri, 07 Sep 2007) $
*/
public interface ComponentManager {
/**
* Get a list of component objects
*
* @return list of components
*/
List<Component> getComponents();
/**
* Get a component object by name
*
* @param componentName
* @return component
*/
Component getComponent(String componentName);
/**
* Returns true if the named component is started
* @param component
* @return true if component is started
*/
boolean isComponentStarted(Component component);
/**
* Start a component. Makes it ready to receive messages
*
* @param component
* @throws ActivationException
*/
void startComponent(Component component) throws ActivationException;
/**
* Stop component.
* @param component
* @throws ActivationException
*/
void stopComponent(Component component) throws ActivationException;
/**
* Add a listener that will be called back when the component state changes
*
* @param listener
*/
void addComponentListener(ComponentListener listener);
/**
* Remove a component listener
*
* @param listener
*/
void removeComponentListener(ComponentListener listener);
}
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