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  
18  package org.orekit.estimation.common;
19  
20  import org.orekit.estimation.measurements.EstimatedMeasurement;
21  import org.orekit.estimation.measurements.ObservedMeasurement;
22  
23  /** Evaluation counting.
24   * @param T type of mesurement
25   * @author Luc Maisonobe
26   */
27  class EvaluationCounter<T extends ObservedMeasurement<T>> implements EvaluationLogger<T> {
28  
29      /** Total number of measurements. */
30      private int total;
31  
32      /** Number of active (i.e. positive weight) measurements. */
33      private int active;
34  
35      /** {@inheritDoc} */
36      @Override
37      public void log(final EstimatedMeasurement<T> evaluation) {
38          ++total;
39          if (evaluation.getStatus() == EstimatedMeasurement.Status.PROCESSED) {
40              ++active;
41          }
42      }
43  
44      /** Format an active/total count.
45       * @param size field minimum size
46       * @return formatted count
47       */
48      public String format(final int size) {
49          final StringBuilder builder = new StringBuilder();
50          builder.append(active);
51          builder.append('/');
52          builder.append(total);
53          while (builder.length() < size) {
54              if (builder.length() % 2 == 0) {
55                  builder.insert(0, ' ');
56              } else {
57                  builder.append(' ');
58              }
59          }
60          return builder.toString();
61      }
62  
63  }