OpenSplice Java 5 DCPS  v6.x
OpenSplice Java 5 OpenSplice Data Distribution Service Data-Centric Publish-Subscribe API
SampleState.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 
25 public enum SampleState {
26  // -----------------------------------------------------------------------
27  // States
28  // -----------------------------------------------------------------------
33  READ(0x0001 << 0),
37  NOT_READ(0x0001 << 1);
38 
39 
40 
41  // -----------------------------------------------------------------------
42  // Constants
43  // -----------------------------------------------------------------------
44 
45  public final int value;
46 
47 
48 
49  // -----------------------------------------------------------------------
50  // Object Life Cycle
51  // -----------------------------------------------------------------------
52  private SampleState(int value) {
53  this.value = value;
54  }
55 
56 }
For each sample, the Data Distribution Service internally maintains a SampleState specific to each Da...
NOT_READ
NOT_READ indicates that the DataReader has not accessed that sample before.
READ
READ indicates that the DataReader has already accessed that sample by means of org.omg.dds.sub.DataReader#read().