Sat, 01 Dec 2007 00:00:00 +0000
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duke@1 | 1 | /* |
duke@1 | 2 | * Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. Sun designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
duke@1 | 9 | * by Sun in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
duke@1 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@1 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@1 | 23 | * have any questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.corba.se.impl.protocol; |
duke@1 | 27 | |
duke@1 | 28 | import org.omg.CORBA.portable.ServantObject; |
duke@1 | 29 | |
duke@1 | 30 | import com.sun.corba.se.spi.protocol.LocalClientRequestDispatcher; |
duke@1 | 31 | import com.sun.corba.se.spi.protocol.RequestDispatcherRegistry; |
duke@1 | 32 | |
duke@1 | 33 | import com.sun.corba.se.spi.orb.ORB; |
duke@1 | 34 | import com.sun.corba.se.spi.ior.IOR ; |
duke@1 | 35 | import com.sun.corba.se.spi.oa.ObjectAdapterFactory; |
duke@1 | 36 | |
duke@1 | 37 | import com.sun.corba.se.spi.ior.ObjectAdapterId; |
duke@1 | 38 | import com.sun.corba.se.spi.ior.TaggedProfile; |
duke@1 | 39 | import com.sun.corba.se.spi.ior.ObjectKeyTemplate; |
duke@1 | 40 | import com.sun.corba.se.spi.ior.ObjectId; |
duke@1 | 41 | |
duke@1 | 42 | public abstract class LocalClientRequestDispatcherBase implements LocalClientRequestDispatcher |
duke@1 | 43 | { |
duke@1 | 44 | protected ORB orb; |
duke@1 | 45 | int scid; |
duke@1 | 46 | |
duke@1 | 47 | // Cached information needed for local dispatch |
duke@1 | 48 | protected boolean servantIsLocal ; |
duke@1 | 49 | protected ObjectAdapterFactory oaf ; |
duke@1 | 50 | protected ObjectAdapterId oaid ; |
duke@1 | 51 | protected byte[] objectId ; |
duke@1 | 52 | |
duke@1 | 53 | // If isNextIsLocalValid.get() == Boolean.TRUE, |
duke@1 | 54 | // the next call to isLocal should be valid |
duke@1 | 55 | protected static ThreadLocal isNextCallValid = new ThreadLocal() { |
duke@1 | 56 | protected synchronized Object initialValue() { |
duke@1 | 57 | return Boolean.TRUE; |
duke@1 | 58 | } |
duke@1 | 59 | }; |
duke@1 | 60 | |
duke@1 | 61 | protected LocalClientRequestDispatcherBase(ORB orb, int scid, IOR ior) |
duke@1 | 62 | { |
duke@1 | 63 | this.orb = orb ; |
duke@1 | 64 | |
duke@1 | 65 | TaggedProfile prof = ior.getProfile() ; |
duke@1 | 66 | servantIsLocal = orb.getORBData().isLocalOptimizationAllowed() && |
duke@1 | 67 | prof.isLocal(); |
duke@1 | 68 | |
duke@1 | 69 | ObjectKeyTemplate oktemp = prof.getObjectKeyTemplate() ; |
duke@1 | 70 | this.scid = oktemp.getSubcontractId() ; |
duke@1 | 71 | RequestDispatcherRegistry sreg = orb.getRequestDispatcherRegistry() ; |
duke@1 | 72 | oaf = sreg.getObjectAdapterFactory( scid ) ; |
duke@1 | 73 | oaid = oktemp.getObjectAdapterId() ; |
duke@1 | 74 | ObjectId oid = prof.getObjectId() ; |
duke@1 | 75 | objectId = oid.getId() ; |
duke@1 | 76 | } |
duke@1 | 77 | |
duke@1 | 78 | public byte[] getObjectId() |
duke@1 | 79 | { |
duke@1 | 80 | return objectId ; |
duke@1 | 81 | } |
duke@1 | 82 | |
duke@1 | 83 | public boolean is_local(org.omg.CORBA.Object self) |
duke@1 | 84 | { |
duke@1 | 85 | return false; |
duke@1 | 86 | } |
duke@1 | 87 | |
duke@1 | 88 | /* |
duke@1 | 89 | * Possible paths through |
duke@1 | 90 | * useLocalInvocation/servant_preinvoke/servant_postinvoke: |
duke@1 | 91 | * |
duke@1 | 92 | * A: call useLocalInvocation |
duke@1 | 93 | * If useLocalInvocation returns false, servant_preinvoke is not called. |
duke@1 | 94 | * If useLocalInvocation returns true, |
duke@1 | 95 | * call servant_preinvoke |
duke@1 | 96 | * If servant_preinvoke returns null, |
duke@1 | 97 | * goto A |
duke@1 | 98 | * else |
duke@1 | 99 | * (local invocation proceeds normally) |
duke@1 | 100 | * servant_postinvoke is called |
duke@1 | 101 | * |
duke@1 | 102 | */ |
duke@1 | 103 | public boolean useLocalInvocation( org.omg.CORBA.Object self ) |
duke@1 | 104 | { |
duke@1 | 105 | if (isNextCallValid.get() == Boolean.TRUE) |
duke@1 | 106 | return servantIsLocal ; |
duke@1 | 107 | else |
duke@1 | 108 | isNextCallValid.set( Boolean.TRUE ) ; |
duke@1 | 109 | |
duke@1 | 110 | return false ; |
duke@1 | 111 | } |
duke@1 | 112 | |
duke@1 | 113 | /** Check that the servant in info (which must not be null) is |
duke@1 | 114 | * an instance of the expectedType. If not, set the thread local flag |
duke@1 | 115 | * and return false. |
duke@1 | 116 | */ |
duke@1 | 117 | protected boolean checkForCompatibleServant( ServantObject so, |
duke@1 | 118 | Class expectedType ) |
duke@1 | 119 | { |
duke@1 | 120 | if (so == null) |
duke@1 | 121 | return false ; |
duke@1 | 122 | |
duke@1 | 123 | // Normally, this test will never fail. However, if the servant |
duke@1 | 124 | // and the stub were loaded in different class loaders, this test |
duke@1 | 125 | // will fail. |
duke@1 | 126 | if (!expectedType.isInstance( so.servant )) { |
duke@1 | 127 | isNextCallValid.set( Boolean.FALSE ) ; |
duke@1 | 128 | |
duke@1 | 129 | // When servant_preinvoke returns null, the stub will |
duke@1 | 130 | // recursively re-invoke itself. Thus, the next call made from |
duke@1 | 131 | // the stub is another useLocalInvocation call. |
duke@1 | 132 | return false ; |
duke@1 | 133 | } |
duke@1 | 134 | |
duke@1 | 135 | return true ; |
duke@1 | 136 | } |
duke@1 | 137 | |
duke@1 | 138 | } |
duke@1 | 139 | |
duke@1 | 140 | // End of file. |