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.frames;
18  
19  import java.util.function.Supplier;
20  
21  import org.orekit.data.AbstractSelfFeedingLoader;
22  import org.orekit.data.DataProvidersManager;
23  import org.orekit.time.TimeScale;
24  
25  /**
26   * Base class for EOP loaders.
27   *
28   * @author Evan Ward
29   */
30  public class AbstractEopLoader extends AbstractSelfFeedingLoader {
31  
32  
33      /** UTC time scale used for parsing files. */
34      private final Supplier<TimeScale> utcSupplier;
35  
36      /**
37       * Simple constructor.
38       *
39       * @param supportedNames regular expression for supported files names.
40       * @param manager        provides access to the EOP files.
41       * @param utcSupplier    UTC time scale.
42       */
43      public AbstractEopLoader(final String supportedNames,
44                               final DataProvidersManager manager,
45                               final Supplier<TimeScale> utcSupplier) {
46          super(supportedNames, manager);
47          this.utcSupplier = utcSupplier;
48      }
49  
50      /**
51       * Get the UTC time scale.
52       *
53       * @return UTC time scale.
54       */
55      protected TimeScale getUtc() {
56          return utcSupplier.get();
57      }
58  
59  }