Android Open Source - mha-android Node Signature

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License

The source code is released under:

Copyright (c) 2011-2012 Cameron Porter, Ryan Brown http://github.com/camporter/mha-android Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated...

Java Source Code

package com.teamacra.myhomeaudio.locations;
//from  www .  ja va2s .  c  o m
import java.util.ArrayList;
import java.util.Iterator;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import com.teamacra.myhomeaudio.node.Node;

/**
 * For every room with a node in it, we have a signature for that particular
 * room. The NodeSignature object comprises of the signal ranges of any nodes
 * found in the room (represented by a NodeSignalRange), and the node that
 * actually serves the room.
 * 
 */
public class NodeSignature {

  private Node node; // The node within the room
  private ArrayList<NodeSignalRange> nodeSignalRanges;

  public NodeSignature(Node node) {
    this.nodeSignalRanges = new ArrayList<NodeSignalRange>();
    this.node = node;
  }

  public NodeSignature(Node node, ArrayList<NodeSignalRange> nodeSignalRanges) {
    this.nodeSignalRanges = nodeSignalRanges;
    this.node = node;
  }

  /**
   * Stores in this signature that the given node had the given rssi value
   * during configuration.
   * 
   * @param node
   *            The Node that the signal is for.
   * @param rssi
   *            The rssi value that was found.
   * @return Whether the signal was actually stored.
   */
  public boolean storeSignal(Node node, int rssi) {
    for (Iterator<NodeSignalRange> i = nodeSignalRanges.iterator(); i
        .hasNext();) {
      NodeSignalRange nextSignalRange = i.next();
      if (nextSignalRange.getNode() == node) {
        // This node already has a signal range in this signature,
        // so just pass the rssi value to the NodeSignalRange.
        nextSignalRange.storeRSSIValue(rssi);
        return true;
      }
    }
    
    // Node not in node signal ranges list yet
    NodeSignalRange newNodeSignalRange = new NodeSignalRange(node);
    newNodeSignalRange.storeRSSIValue(rssi);
    nodeSignalRanges.add(newNodeSignalRange);
    
    
    return true;
  }

  /**
   * Gets the NodeSignalRange for a given Node within the signature.
   * 
   * @param node
   *            The Node to get the signal range of.
   * @return The NodeSignalRange, or null if this Node doesn't exist in this
   *         signature.
   */
  public NodeSignalRange getNodeRange(Node node) {
    for (Iterator<NodeSignalRange> i = nodeSignalRanges.iterator(); i
        .hasNext();) {
      NodeSignalRange signal = i.next();
      if (signal.getNode() == node) {
        return signal;
      }
    }
    return null;
  }

  /**
   * Determines if a the given node is in the list of found nodes.
   * 
   * @param node
   *            Node to check
   * @return True - if found, False - if not
   */
  private boolean containsNode(Node node) {
    for (Iterator<NodeSignalRange> i = nodeSignalRanges.iterator(); i
        .hasNext();) {
      if (i.next().getNode() == node) {
        return true;
      }
    }
    return false;
  }

  /**
   * Get the node representing this NodeSignature.
   * 
   * @return The Node itself.
   */
  public Node getNode() {
    return node;
  }

  /**
   * Return the number of nodes within the signature.
   * 
   * @return int Number of found nodes
   */
  public int size() {
    return nodeSignalRanges.size();
  }

  // {"id":1,"nodeSignalRanges":[{"id":1,"min":1,"max":10},{"id":2,"min":2,"max":14},{"id":3,"min":5,"max":7}]}

  public JSONObject toJSON() {
    JSONObject object = new JSONObject();
    JSONArray array = new JSONArray();
    try {
      object.put("id", node.id());

      for (Iterator<NodeSignalRange> i = nodeSignalRanges.iterator(); i.hasNext();) {
        array.put(i.next().toJSON());
      }
      object.put("foundNodes", array);
    } catch (JSONException e) {
      e.printStackTrace();
    }

    return object;
  }
}

Java Source Code List

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