ClusterRectangle.java

/**
 * 
 */
package kr.ac.kaist.resl.lilliput.model;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jaewook Byun, Ph.D Student, Department of Computer Science, KAIST
 * @email bjw0829@kaist.ac.kr
 */
public class ClusterRectangle
{
	private double minLon;
	private double minLat;
	private double maxLon;
	private double maxLat;
	private List<GeoPoint> members;
	private List<Period> periods;
	
	@Override
	public String toString()
	{
		return minLon+"\t"+minLat+"\t"+maxLon+"\t"+maxLat;
	}
	
	
	/**
	 * @return the periods
	 */
	public List<Period> getPeriods() {
		return periods;
	}

	/**
	 * @param periods the periods to set
	 */
	public void setPeriods(List<Period> periods) {
		this.periods = periods;
	}

	/**
	 * @return the members
	 */
	public List<GeoPoint> getMembers() {
		return members;
	}

	/**
	 * @param members the members to set
	 */
	public void setMembers(List<GeoPoint> members) {
		this.members = members;
	}

	/**
	 * @return the minLon
	 */
	public double getMinLon() {
		return minLon;
	}

	/**
	 * @param minLon the minLon to set
	 */
	public void setMinLon(double minLon) {
		this.minLon = minLon;
	}

	/**
	 * @return the minLat
	 */
	public double getMinLat() {
		return minLat;
	}

	/**
	 * @param minLat the minLat to set
	 */
	public void setMinLat(double minLat) {
		this.minLat = minLat;
	}

	/**
	 * @return the maxLon
	 */
	public double getMaxLon() {
		return maxLon;
	}

	/**
	 * @param maxLon the maxLon to set
	 */
	public void setMaxLon(double maxLon) {
		this.maxLon = maxLon;
	}

	/**
	 * @return the maxLat
	 */
	public double getMaxLat() {
		return maxLat;
	}

	
	/**
	 * Make sure that members including timestamp were already included
	 * @param term : minimal term differenciates periods
	 */
	public void computePeriods(int term)
	{
		
		// Phase 1: Creation
		for(int i = 0 ; i < this.members.size() ;i++)
		{
			GeoPoint gp = this.members.get(i);
			long timestamp = gp.getTimestamp();
			
			if( this.periods.size() == 0 )
			{
				Period period = new Period(timestamp, timestamp);
				this.periods.add(period);
				continue;
			}
			
			// 새로운 주기를 만드는 것으로 가정하고 들어
			boolean createNew = true;
			for(int j = 0 ; j < this.periods.size() ; j++ )
			{
				Period period = this.periods.get(j);
				
				// 이전일 확률이 있다.
				if( timestamp < period.getFrom() )
				{
					// 현재 Period에서 주기보다 짧다면, 확장시킨후 종료 플래그를 넣음 
					if( ( period.getFrom() - timestamp ) <= term )  
					{
						period.setFrom(timestamp);
						createNew = false;
						break;
					}
				}
				else if( ( period.getFrom() <= timestamp ) && ( timestamp <= period.getTo()))	// 안에 들어감
				{
					// Break this timestamp
					createNew = false;
					break;
				}
				else	//이후일 확률이 있음 
				{
					// 현재 Period에서 주기보다 짧다면, 확장시킨후 종료 플래그를 넣음 
					if( ( timestamp - period.getTo() ) <= term )
					{
						period.setTo(timestamp);
						createNew = false;
						break;
					}
				}
			}
			if( createNew == true )
			{
				Period period = new Period(timestamp, timestamp);
				this.periods.add(period);
			}
		}
	}
	
	
	/**
	 * @param maxLat the maxLat to set
	 */
	public void setMaxLat(double maxLat) {
		this.maxLat = maxLat;
	}
	public ClusterRectangle(double minLon, double minLat, double maxLon, double maxLat)
	{
		this.minLon = minLon;
		this.minLat = minLat;
		this.maxLon = maxLon;
		this.maxLat = maxLat;
		this.members = new ArrayList<GeoPoint>();
		this.periods = new ArrayList<Period>();
	}
}