77 lines
2.7 KiB
Java
77 lines
2.7 KiB
Java
/*-
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* ~~~~~~licensing~~~~~~
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* system-commons
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* ==========
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* Copyright (C) 2020 - 2023 EmDev LLC
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* ==========
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* You may not use this file except in accordance with the License Terms of the Copyright
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* Holder located at: https://entaxy.ru/eula . All copyrights, all intellectual property
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* rights to the Software and any copies are the property of the Copyright Holder. Unless
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* it is explicitly allowed the Copyright Holder, the User is prohibited from using the
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* Software for commercial purposes to provide services to third parties.
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*
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* The Copyright Holder hereby declares that the Software is provided on an "AS IS".
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* Under no circumstances does the Copyright Holder guarantee or promise that the
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* Software provided by him will be suitable or not suitable for the specific purposes
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* of the User, that the Software will meet all commercial and personal subjective
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* expectations of the User, that the Software will work properly, without technical
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* errors, quickly and uninterruptedly.
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*
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* Under no circumstances shall the Copyright Holder or its Affiliates is not liable
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* to the User for any direct or indirect losses of the User, his expenses or actual
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* damage, including, downtime; loss of bussines; lost profit; lost earnings; loss
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* or damage to data, property, etc.
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* ~~~~~~/licensing~~~~~~
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*/
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package ru.entaxy.platform.base.support.osgi.service;
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import org.osgi.framework.ServiceReference;
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import java.util.*;
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public abstract class CommonNamedReferenceListener<T> implements NamedReferenceListener<T> {
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protected Map<String, T> registeredReferences = new HashMap<String, T>();
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public void register(T service) throws Exception {
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if (service instanceof ServiceReference)
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return;
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String key = getObjectName(service);
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registeredReferences.put(key, service);
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doAfterRegister(service);
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}
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protected void doAfterRegister(T service) throws Exception {
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}
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protected void doBeforeUnregister(T service) throws Exception {
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}
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public void unregister(T service) throws Exception {
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if (service == null || service instanceof ServiceReference)
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return;
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doBeforeUnregister(service);
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registeredReferences.remove(getObjectName(service));
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}
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@Override
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public List<String> getReferenceNames() {
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List<String> result = new ArrayList<String>(registeredReferences.keySet());
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Collections.sort(result);
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return result;
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}
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@Override
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public T getReference(String referenceName) {
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return registeredReferences.get(referenceName);
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}
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public boolean isRegistered(String referenceName) {
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return registeredReferences.containsKey(referenceName);
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}
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protected abstract String getObjectName(T object);
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}
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