1 | /* |
2 | * $Id: ComClassFactory.java,v 1.7 2006/02/01 18:54:35 adamp 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.nio.ByteBuffer; |
15 | import java.util.logging.Level; |
16 | import java.util.logging.Logger; |
17 | |
18 | public class ComClassFactory extends ComObject implements IClassFactory { |
19 | private static final Logger s_logger = Logger.getLogger(ComClassFactory.class.getName()); |
20 | private final Class m_factory_for_class; |
21 | |
22 | public ComClassFactory(Class factory_for_class) { |
23 | m_factory_for_class = factory_for_class; |
24 | } |
25 | |
26 | public void CreateInstance(IUnknown pUnkOuter, Object[] out_iface) { |
27 | checkAggregation(pUnkOuter, out_iface); |
28 | |
29 | if (!isAggregation(pUnkOuter)) { |
30 | create().QueryInterface(out_iface); |
31 | } else { |
32 | createInner(pUnkOuter).QueryInterface(out_iface); |
33 | } |
34 | } |
35 | |
36 | public void LockServer(boolean fLock) { |
37 | // TODO Auto-generated method stub |
38 | } |
39 | |
40 | /** |
41 | * @param pUnkOuter |
42 | * @return |
43 | */ |
44 | private boolean isAggregation(IUnknown pUnkOuter) { |
45 | return pUnkOuter != null; |
46 | } |
47 | |
48 | /** |
49 | * @param pUnkOuter |
50 | * @param out_iface |
51 | */ |
52 | private void checkAggregation(IUnknown pUnkOuter, Object[] out_iface) { |
53 | if (isAggregation(pUnkOuter) && !(out_iface instanceof IUnknown[])) { |
54 | // can't ask for anything other than IUnknown when aggregating |
55 | s_logger.log(Level.FINE, "asked for non IUnknown interface while creating an aggregated object"); |
56 | throw new COMException(HRESULT.CLASS_E_NOAGGREGATION); |
57 | } |
58 | } |
59 | |
60 | private ComObject createInner(IUnknown unkOuter) { |
61 | ComObject inner = new ComObject(); |
62 | inner.m_iunknown_support.aggregate(create()); |
63 | |
64 | ComIUnknownOuter outer = new ComIUnknownOuter(unkOuter); |
65 | outer.aggregate(inner); |
66 | return inner; |
67 | } |
68 | |
69 | private ComObject create() { |
70 | try { |
71 | return (ComObject)m_factory_for_class.newInstance(); |
72 | } catch (ClassCastException e) { |
73 | s_logger.log(Level.INFO, "caught", e); |
74 | throw new COMException(COM.mapExceptionToHRESULT(e)); |
75 | } catch (InstantiationException e) { |
76 | s_logger.log(Level.INFO, "caught", e); |
77 | throw new COMException(COM.mapExceptionToHRESULT(e)); |
78 | } catch (IllegalAccessException e) { |
79 | s_logger.log(Level.INFO, "caught", e); |
80 | throw new COMException(COM.mapExceptionToHRESULT(e)); |
81 | } |
82 | } |
83 | |
84 | static IUnknown thunkedCreateInstance(Object oFactory, IUnknown pUnkOuter, ByteBuffer bb_iid) { |
85 | ComClassFactory factory = (ComClassFactory)oFactory; |
86 | GUID iid = new GUID(bb_iid); |
87 | return factory.create().m_iunknown_support.queryInterface(iid); |
88 | } |
89 | } |
90 | |
91 | |