se.jguru.nazgul.core.osgi.launcher.api.event.OsgiFrameworkListener Maven / Gradle / Ivy
/*
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* Nazgul Project: nazgul-core-osgi-launcher-api
* %%
* Copyright (C) 2010 - 2013 jGuru Europe AB
* %%
* Licensed under the jGuru Europe AB license (the "License"), based
* on Apache License, Version 2.0; you may not use this file except
* in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.jguru.se/licenses/jguruCorporateSourceLicense-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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*/
package se.jguru.nazgul.core.osgi.launcher.api.event;
import se.jguru.nazgul.core.algorithms.event.api.consumer.EventConsumer;
/**
* Listener specification for receiving callbacks when the OSGi framework
* emits events for BlueprintContainer services.
*
* @param The exact subtype of OsgiFrameworkListener in effect
* @param The OSGi service object type to subscibe to. This might be
* a standard {@code ServiceReference} or a {@code BlueprintContainer}
* depending on the implementation.
* @author Lennart Jörelid, jGuru Europe AB
*/
public interface OsgiFrameworkListener, S> extends EventConsumer {
/**
* Event callback method invoked after an OSGi service was added to the underlying OSGI Framework.
*
* @param serviceObject A reference to the service just added.
*/
void afterServiceAdded(S serviceObject);
/**
* Event callback method invoked before an OSGi service was removed from the underlying OSGI framework.
*
* @param serviceObject A reference to the service to be removed.
*/
void beforeServiceRemoved(S serviceObject);
/**
* Event callback method invoked when an OSGi service was modified within the underlying OSGI framework.
*
* @param serviceObject A reference to the modified service.
*/
void onServiceModified(S serviceObject);
}