1   /* Copyright 2002-2025 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.utils;
18  
19  import org.hipparchus.util.MathUtils;
20  
21  import java.io.IOException;
22  import java.io.InputStream;
23  import java.util.Properties;
24  
25  /** Utility class for setting global configuration parameters.
26  
27   * @author Luc Maisonobe
28   */
29  public class OrekitConfiguration {
30  
31      /** Number of slots to use in caches. */
32      private static int CACHE_SLOTS_NUMBER;
33  
34      static {
35          CACHE_SLOTS_NUMBER = 100;
36      }
37  
38      /** Private constructor.
39       * <p>This class is a utility class, it should neither have a public
40       * nor a default constructor. This private constructor prevents
41       * the compiler from generating one automatically.</p>
42       */
43      private OrekitConfiguration() {
44      }
45  
46      /** Set the number of slots to use in caches.
47       * @param slotsNumber number of slots to use in caches
48       */
49      public static void setCacheSlotsNumber(final int slotsNumber) {
50          OrekitConfiguration.CACHE_SLOTS_NUMBER = slotsNumber;
51      }
52  
53      /** Get the number of slots to use in caches.
54       * @return number of slots to use in caches
55       */
56      public static int getCacheSlotsNumber() {
57          return CACHE_SLOTS_NUMBER;
58      }
59  
60      /**
61       * Get Orekit version.
62       * <p>
63       * The version is automatically retrieved from a properties file generated
64       * at maven compilation time. When using an IDE not configured to use
65       * maven, then a default value {@code "unknown"} will be returned.
66       * </p>
67       * @return Orekit version
68       * @since 4.0
69       */
70      public static String getOrekitVersion() {
71          String version = "unknown";
72          final Properties properties = new Properties();
73          try (InputStream stream = MathUtils.class.getResourceAsStream("/assets/org/orekit/orekit.properties")) {
74              if (stream != null) {
75                  properties.load(stream);
76                  version = properties.getProperty("orekit.version", version);
77              }
78          } catch (IOException ioe) {
79              // ignored
80          }
81          return version;
82      }
83  
84  }