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package edu.ucsb.nceas.metacat.event;
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import java.util.ArrayList;
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import java.util.List;
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public class MetacatEventService {
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private static MetacatEventService instance;
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private List<MetacatEventObserver> observers;
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private MetacatEventService() {
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observers = new ArrayList<MetacatEventObserver>();
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}
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public static MetacatEventService getInstance() {
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if (instance == null) {
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instance = new MetacatEventService();
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}
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return instance;
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}
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public void addMetacatEventObserver(MetacatEventObserver o) {
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observers.add(o);
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}
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public void removeMetacatEventObserver(MetacatEventObserver o) {
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observers.remove(o);
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}
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public void notifyMetacatEventObservers(MetacatEvent e) {
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for (MetacatEventObserver o: observers) {
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o.handleEvent(e);
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}
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}
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}
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