1   /* Copyright 2002-2026 CS GROUP
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.files.ccsds.ndm.cdm;
18  
19  import java.util.Optional;
20  
21  import org.orekit.annotation.Nullable;
22  import org.orekit.files.ccsds.section.Header;
23  
24  /**
25   * Header of a CCSDS Conjunction Data Message.
26   * @author Melina Vanel
27   * @since 11.2
28   */
29  public class CdmHeader extends Header {
30  
31      /** ID that uniquely identifies a message from a given originator. */
32      @Nullable
33      private String messageFor;
34  
35      /**
36       * Constructor.
37       */
38      public CdmHeader() {
39          super(1.0, 2.0);
40      }
41  
42      /** {@inheritDoc} */
43      @Override
44      public void validate(final double version) {
45          super.validate(version);
46      }
47  
48      /**
49       * Get the spacecraft name for which the CDM is provided stored in MESSAGE_FOR key.
50       * @return messageFor the spacecraft name for which the CDM is provided.
51       */
52      public Optional<String> getMessageFor() {
53          return Optional.ofNullable(messageFor);
54      }
55  
56      /**
57       * Set the spacecraft name for which the CDM is provided stored in MESSAGE_FOR key.
58       * @param spacecraftNames the spacecraft name for which the CDM is provided.
59       */
60      public void setMessageFor(final String spacecraftNames) {
61          refuseFurtherComments();
62          this.messageFor = spacecraftNames;
63      }
64  
65  }