OpenSplice Java 5 DCPS  v6.x
OpenSplice Java 5 OpenSplice Data Distribution Service Data-Centric Publish-Subscribe API
InstanceState.java
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1 /* Copyright 2010, Object Management Group, Inc.
2  * Copyright 2010, PrismTech, Inc.
3  * Copyright 2010, Real-Time Innovations, Inc.
4  * All rights reserved.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 package org.omg.dds.sub;
20 
42 public enum InstanceState {
43  // -----------------------------------------------------------------------
44  // States
45  // -----------------------------------------------------------------------
54  ALIVE(0x0001 << 0),
61  NOT_ALIVE_DISPOSED(0x0001 << 1),
66  NOT_ALIVE_NO_WRITERS(0x0001 << 2);
67 
68 
69 
70  // -----------------------------------------------------------------------
71  // Constants
72  // -----------------------------------------------------------------------
73 
74  public final int value;
75 
76 
77 
78  // -----------------------------------------------------------------------
79  // Object Life Cycle
80  // -----------------------------------------------------------------------
81 
82  private InstanceState(int value) {
83  this.value = value;
84  }
85 
86 }
For each instance the Data Distribution Service internally maintains an InstanceState.
ALIVE
ALIVE indicates that:
NOT_ALIVE_NO_WRITERS
NOT_ALIVE_NO_WRITERS indicates the instance has been declared as not-alive by the DataReader because ...
NOT_ALIVE_DISPOSED
NOT_ALIVE_DISPOSED indicates the instance was disposed of by a DataWriter either explicitly by means ...