1   /* Contributed in the public domain.
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.data;
18  
19  /**
20   * Holds a mutable static field since {@link DataContext} cannot.
21   *
22   * @author Evan Ward
23   * @since 10.1
24   */
25  class DefaultDataContextHolder {
26  
27      /** The default Orekit data context. */
28      private static volatile LazyLoadedDataContext INSTANCE = new LazyLoadedDataContext();
29  
30      /** Private Constructor. */
31      private DefaultDataContextHolder() {
32      }
33  
34      /** Get the default Orekit data context.
35       * @return Orekit's default data context.
36       */
37      static LazyLoadedDataContext getInstance() {
38          return INSTANCE;
39      }
40  
41      /** Set the default Orekit data context.
42       * @param context the new data context.
43       */
44      static void setInstance(final LazyLoadedDataContext context) {
45          INSTANCE = context;
46      }
47  
48  }