1 /* 2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.corba.se.impl.encoding; 27 28 import java.nio.ByteBuffer; 29 import com.sun.corba.se.spi.orb.ORB; 30 import com.sun.corba.se.spi.logging.CORBALogDomains; 31 import com.sun.corba.se.impl.protocol.giopmsgheaders.FragmentMessage; 32 import com.sun.corba.se.impl.protocol.giopmsgheaders.Message; 33 import com.sun.corba.se.impl.logging.ORBUtilSystemException; 34 35 public class BufferManagerReadGrow 36 implements BufferManagerRead, MarkAndResetHandler 37 { 38 // REVISIT - This should go in an abstract class called 39 // BufferManagerReadBase which should implement 40 // BufferManagerRead. Then, this class should extend 41 // BufferManagerReadBase. 42 private ORB orb ; 43 44 private ORBUtilSystemException wrapper ; 45 46 BufferManagerReadGrow( ORB orb ) 47 { 48 this.orb = orb ; 49 this.wrapper = ORBUtilSystemException.get( orb, 50 CORBALogDomains.RPC_ENCODING ) ; 51 } 52 53 public void processFragment (ByteBuffer byteBuffer, FragmentMessage header) 54 { 55 // REVISIT - should we consider throwing an exception similar to what's 56 // done for underflow()??? 57 } 58 59 public void init(Message msg) {} 60 61 public ByteBufferWithInfo underflow (ByteBufferWithInfo bbwi) 62 { 63 throw wrapper.unexpectedEof() ; 64 } 65 66 public void cancelProcessing(int requestId) {} 67 68 // Mark and reset handler ------------------------- 69 70 private Object streamMemento; 71 private RestorableInputStream inputStream; 72 private boolean markEngaged = false; 73 74 public MarkAndResetHandler getMarkAndResetHandler() { 75 return this; 76 } 77 78 public void mark(RestorableInputStream is) { 79 markEngaged = true; 80 inputStream = is; 81 streamMemento = inputStream.createStreamMemento(); 82 } 83 84 // This will never happen 85 public void fragmentationOccured(ByteBufferWithInfo newFragment) {} 86 87 public void reset() { 88 89 if (!markEngaged) 90 return; 91 92 markEngaged = false; 93 inputStream.restoreInternalState(streamMemento); 94 streamMemento = null; 95 } 96 97 // Nothing to close and cleanup. 98 public void close(ByteBufferWithInfo bbwi) {} 99 }