bundles/org.simantics.db.server/src/org/simantics/db/server/protocol/AbstractMessage.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.server.protocol;
  13
  14 public abstract class AbstractMessage extends Message {
  15         protected final int requestNumber;
  16         protected final int responseNumber;
  17         protected int receivedNumber = 0;
  18         protected boolean responsePending = false;
  19         protected DataBuffer buffer;
  20         private String exceptionText = null;
  21         AbstractMessage(int requestNumber, int responseNumber) {
  22                 this.requestNumber = requestNumber;
  23                 this.responseNumber = responseNumber;
  24                 this.buffer = new DataBuffer(DataBuffer.Allocation.DirectAllocation); //ByteBuffer.allocate(0);
  25         }
  26         AbstractMessage(int requestNumber, int responseNumber, DataBuffer buffer) {
  27                 this.requestNumber = requestNumber;
  28                 this.responseNumber = responseNumber;
  29                 this.buffer = buffer;
  30         }
  31     public int getRequestNumber() {
  32         return requestNumber;
  33     }
  34     public int getResponseNumber() {
  35         return responseNumber;
  36     }
  37         @Override
  38         boolean hasResponse() {
  39                 return responseNumber != 0;
  40         }
  41         @Override
  42         String getExceptionText() {
  43                 return this.exceptionText;
  44         }
  45         @Override
  46         void setExceptionText(String text) {
  47                 this.exceptionText = text;
  48         }
  49     void gotResponse() {
  50         responsePending = false;
  51     }
  52 }