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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.io.common;
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import java.util.HashSet;
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import java.util.Set;
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import eu.etaxonomy.cdm.io.common.events.IIoEvent;
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import eu.etaxonomy.cdm.io.common.events.IIoObserver;
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import eu.etaxonomy.cdm.io.common.events.IoProblemEvent;
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/**
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* @author a.mueller
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* @since 30.03.2012
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*
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*/
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public class ObservableBase implements IIoObservable {
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private static final long serialVersionUID = -8417951583494704537L;
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private Set<IIoObserver> observers = new HashSet<IIoObserver>();
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@Override
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public Set<IIoObserver> getObservers() {
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return observers;
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}
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@Override
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public int countObservers(){
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return observers.size();
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}
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public void setObservers(Set<IIoObserver> observers) {
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this.observers = observers;
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}
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@Override
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public boolean addObserver(IIoObserver observer){
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return this.observers.add(observer);
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}
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@Override
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public void removeObservers(){
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observers.removeAll(observers);
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}
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@Override
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public void addObservers(Set<IIoObserver> newObservers) {
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for (IIoObserver observer : newObservers){
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this.observers.add(observer);
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}
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}
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@Override
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public boolean removeObserver(IIoObserver observer){
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return this.observers.remove(observer);
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}
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protected void fire(IIoEvent event){
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for (IIoObserver observer: observers){
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observer.handleEvent(event);
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}
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}
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protected void fireWarningEvent(String message, String dataLocation, Integer severity) {
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fireWarningEvent(message, dataLocation, severity, 1);
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}
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protected void fireWarningEvent(String message, String dataLocation, Integer severity, int stackDepth) {
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stackDepth++;
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StackTraceElement[] stackTrace = new Exception().getStackTrace();
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int lineNumber = stackTrace[stackDepth].getLineNumber();
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String methodName = stackTrace[stackDepth].getMethodName();
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String className = stackTrace[stackDepth].getClassName();
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Class<?> declaringClass;
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try {
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declaringClass = Class.forName(className);
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} catch (ClassNotFoundException e) {
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declaringClass = this.getClass();
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}
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IoProblemEvent event = IoProblemEvent.NewInstance(declaringClass, message, dataLocation,
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lineNumber, severity, methodName);
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//for performance improvement one may read:
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//http://stackoverflow.com/questions/421280/in-java-how-do-i-find-the-caller-of-a-method-using-stacktrace-or-reflection
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// Object o = new SecurityManager().getSecurityContext();
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fire(event);
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}
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}
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