| 1 | /* |
| 2 | * $Id: EventSourceToListenerCookieTable.java,v 1.2 2005/12/01 06:10:00 hastings Exp $ |
| 3 | * |
| 4 | * (c) Copyright, Moebius Solutions, Inc., 2004 |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This material may be reproduced by or for the U. S. Government |
| 9 | * pursuant to the copyright license under the clause at |
| 10 | * DFARS 252.227-7014 (OCT 2001). |
| 11 | */ |
| 12 | package com.moesol.bindings.platform_sdk.component_services; |
| 13 | |
| 14 | import java.util.Hashtable; |
| 15 | |
| 16 | import com.moesol.bindings.platform_sdk.component_services.IUnknown.Jni; |
| 17 | |
| 18 | /** |
| 19 | * |
| 20 | * @author Hastings |
| 21 | */ |
| 22 | public class EventSourceToListenerCookieTable { |
| 23 | |
| 24 | private static EventSourceToListenerCookieTable g_singleton = new EventSourceToListenerCookieTable(); |
| 25 | |
| 26 | /** |
| 27 | * Exposed for unit tests. |
| 28 | * |
| 29 | * @return the one an only EventSourceToListenerCookieTable |
| 30 | */ |
| 31 | public static EventSourceToListenerCookieTable singleton() { |
| 32 | return g_singleton; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Exposed for unit tests |
| 37 | * |
| 38 | * @param unk |
| 39 | * @return the ListenerCookieTable for {@code unk}. |
| 40 | */ |
| 41 | public ListenerCookieTable findOrMakeListenerCookieTable(Jni unk) { |
| 42 | synchronized (this) { |
| 43 | Integer unk_key = extractKey(unk); |
| 44 | |
| 45 | ListenerCookieTable result = (ListenerCookieTable)m_table.get(unk_key); |
| 46 | if (result != null) { |
| 47 | return result; |
| 48 | } |
| 49 | |
| 50 | result = new ListenerCookieTable(); |
| 51 | m_table.put(unk_key, result); |
| 52 | return result; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | void removeListenerCookieTable(Jni unk) { |
| 57 | m_table.remove(extractKey(unk)); |
| 58 | } |
| 59 | |
| 60 | private static Integer extractKey(Jni unk) { |
| 61 | return new Integer(unk.hashCode()); |
| 62 | } |
| 63 | |
| 64 | private Hashtable m_table = new Hashtable(); |
| 65 | } |