| 1 | /* |
| 2 | * $Id: ComInProcGroups.java,v 1.1 2005/12/14 03:20:38 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.net.MalformedURLException; |
| 15 | import java.net.URLClassLoader; |
| 16 | import java.util.HashMap; |
| 17 | import java.util.Map; |
| 18 | import java.util.prefs.BackingStoreException; |
| 19 | |
| 20 | /** |
| 21 | * Manage COM in-process groups. |
| 22 | * Free threaded. |
| 23 | * |
| 24 | * @author Hastings |
| 25 | */ |
| 26 | public class ComInProcGroups { |
| 27 | |
| 28 | private static final ComInProcGroups s_inst = new ComInProcGroups(); |
| 29 | |
| 30 | private Map m_group_map = new HashMap(); |
| 31 | |
| 32 | private ComInProcGroups() { |
| 33 | } |
| 34 | |
| 35 | public static ComInProcGroups instance() { |
| 36 | return s_inst; |
| 37 | } |
| 38 | |
| 39 | public Class getClass(GUID clsid, String class_name) throws ClassNotFoundException, MalformedURLException, BackingStoreException { |
| 40 | String group = COM.findComServerValue(clsid, "Group"); |
| 41 | ClassLoader child = getClassLoader(group); |
| 42 | return Class.forName(class_name, true, child); |
| 43 | } |
| 44 | |
| 45 | public synchronized ClassLoader getClassLoader(String group_name) throws MalformedURLException, BackingStoreException { |
| 46 | ClassLoader l = (ClassLoader)m_group_map.get(group_name); |
| 47 | if (l == null) { |
| 48 | l = makeLoader(group_name); |
| 49 | m_group_map.put(group_name, l); |
| 50 | } |
| 51 | return l; |
| 52 | } |
| 53 | |
| 54 | private ClassLoader makeLoader(String group_name) throws MalformedURLException, BackingStoreException { |
| 55 | ComClassPathBuilder b = new ComClassPathBuilder(group_name); |
| 56 | return new URLClassLoader(b.buildClassPath()); |
| 57 | } |
| 58 | |
| 59 | } |