com.googlecode.buoy4j.Buoy4jStation Maven / Gradle / Ivy

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package com.googlecode.buoy4j;

import java.util.Map;

import org.jsoup.Jsoup;
import org.w3c.dom.CharacterData;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.google.gson.Gson;
import com.googlecode.buoy4j.geometry.Location;

/**
 * 
 * Container/parser for the current data at a buoy
 * @author ryan
 *
 */
public class Buoy4jStation {
	
	String link;
	String pubDate;
	String title;
	Location buoyLatLng;
	boolean isShip; //sometimes the data gets sent from nearby ships in addition to buoys
	String distance;
	String windDirection;
	String windSpeed;
	String waveHeight;
	String wavePeriodDominant;
	String wavePeriodMean;
	String waveDirection;
	String waterTemperature;
	
	/**
	 * Construct from a Node after parsing some xml
	 * Sample input:
	 * *  
      Sun, 25 Aug 2013 22:55:45 UT
      Station 46086 - SAN CLEMENTE BASIN - 27NM SE OF SAN CLEMENTE IS, CA
      August 25, 2013 2:50 pm PDT

        Location: 32.491N 118.034W or 24 nautical miles NNE of search location of 32.12N 118.2W.

        Wind Direction: NNW (330°)

        Wind Speed: 6 knots

        Wind Gust: 8 knots

        Significant Wave Height: 3 ft

        Dominant Wave Period: 7 sec

        Average Period: 6.2 sec

        Mean Wave Direction: WNW (296°)

        Atmospheric Pressure: 29.89 in (1012.2 mb)

        Pressure Tendency: -0.02 in (-0.7 mb)

        Air Temperature: 64°F (17.7°C)

        Water Temperature: 69°F (20.7°C)

      ]]>
      http://www.ndbc.noaa.gov/station_page.php?station=46086
      http://www.ndbc.noaa.gov/station_page.php?station=46086&ts=1377467400
      32.491 -118.034
    
	 * 
	 * @param itemNode
	 */
	public Buoy4jStation(Node itemNode){
		super();
		
		this.isShip = false;
		NodeList measurementsNodeList = itemNode.getChildNodes(); 
	    for (int j = 0; j < measurementsNodeList.getLength(); j++) {
	    	Node measurementsNode = measurementsNodeList.item(j);
	        if(measurementsNode.getNodeType() == Node.ELEMENT_NODE) {      	
	        	//check if the measurement came from a SHIP
	        	if(measurementsNode.getNodeName().equals("title")){
	        		this.title = getNodeText(measurementsNode);
	        		if(!this.title.toLowerCase().contains("station")){
	        			this.isShip = true;
	        		}
	        	}
	        	
	        	if(measurementsNode.getNodeName().equals("link"))
	        		this.link = getNodeText(measurementsNode);
	        	
	        	if(measurementsNode.getNodeName().equals("pubDate"))
	        		this.pubDate = getNodeText(measurementsNode);
	        	
	        	if(measurementsNode.getNodeName().equals("georss:point"))
	        		this.buoyLatLng = new Location(getNodeText(measurementsNode).split(" "));
	        	
	        	if(measurementsNode.hasChildNodes()){
	        		if(measurementsNode.getFirstChild().getNodeType() == Node.CDATA_SECTION_NODE){
	        			CharacterData cdata = (CharacterData) measurementsNode.getFirstChild();
	        			descriptionParse(cdata.getData());
	        		}       			
	        	}		        	
	        }	        
	    }
	}
	
	/**
	 * the formatting changes inside the CDATA tag
	 * @param ndbcDescription
	 * @return
	 */
	private void descriptionParse(String ndbcDescription){
		for(String line : ndbcDescription.split("
")){
			org.jsoup.nodes.Document D = Jsoup.parse(line);
			String lineNoTags = D.text();
			String[] lineArr = lineNoTags.split(":");
			
			if(lineArr[0].contains("Location")){
				distance = lineArr[1].split("or")[1].split("of")[0].trim() + " of search location";
			}
			if(lineArr[0].contains("Wind Direction")){
				windDirection = lineArr[1].trim();
			}
			if(lineArr[0].contains("Wind Speed")){
				windSpeed = lineArr[1].trim();
			}
			if(lineArr[0].contains("Significant Wave Height")){
				waveHeight = lineArr[1].trim();
			}
			if(lineArr[0].contains("Dominant Wave Period")){
				wavePeriodDominant = lineArr[1].trim();
			}
			if(lineArr[0].contains("Average Period")){
				wavePeriodMean = lineArr[1].trim();
			}
			if(lineArr[0].contains("Mean Wave Direction")){
				waveDirection = lineArr[1].trim();
			}
			if(lineArr[0].contains("Water Temperature")){
				waterTemperature = lineArr[1].trim();
			}	
		}
	}
	
	@Override
	public String toString(){
		Gson gson = new Gson();
		return gson.toJson(this);
	}
	
	/**
	 * Get the text inside a Node
	 * @param node
	 * @return
	 */
	private static String getNodeText(Node node) {
	    StringBuffer buf = new StringBuffer();
	    NodeList children = node.getChildNodes();
	    for (int i = 0; i < children.getLength(); i++) {
	        Node textChild = children.item(i);
	        if (textChild.getNodeType() != Node.TEXT_NODE) {
	            System.err.println("Mixed content! Skipping child element " + textChild.getNodeName());
	            continue;
	        }
	        buf.append(textChild.getNodeValue());
	    }
	    return buf.toString();
	}

	public String getLink() {
		return link;
	}

	public String getPubDate() {
		return pubDate;
	}

	public String getTitle() {
		return title;
	}

	public Location getBuoyLatLng() {
		return buoyLatLng;
	}

	public boolean isShip() {
		return isShip;
	}

	public String getDistance() {
		return distance;
	}

	public String getWindDirection() {
		return windDirection;
	}

	public String getWindSpeed() {
		return windSpeed;
	}

	public String getWaveHeight() {
		return waveHeight;
	}

	public String getWavePeriodDominant() {
		return wavePeriodDominant;
	}

	public String getWavePeriodMean() {
		return wavePeriodMean;
	}

	public String getWaveDirection() {
		return waveDirection;
	}

	public String getWaterTemperature() {
		return waterTemperature;
	}

}