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1   /*
2    * Copyright (C) 2018 Alberto Irurueta Carro (alberto@irurueta.com)
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package com.irurueta.navigation.indoor;
17  
18  import java.io.Serializable;
19  
20  /**
21   * Interface defining any radio source (e.g. Wi-Fi access point or Bluetooth beacon).
22   */
23  public interface RadioSource extends Serializable {
24  
25      /**
26       * Gets frequency used by this radio source (expressed in Hz).
27       *
28       * @return frequency used by this radio source (expressed in Hz).
29       */
30      double getFrequency();
31  
32      /**
33       * Checks whether two radio sources are considered equal if they share the same identifiers.
34       *
35       * @param obj radio source to be compared.
36       * @return true if both radio sources are considered equal, false otherwise.
37       */
38      boolean equals(final Object obj);
39  
40      /**
41       * Gets radio source type, which can be either a Wi-Fi Access point or a bluetooth Beacon.
42       *
43       * @return radio source type.
44       */
45      RadioSourceType getType();
46  }