locationservice.java

一个基于PlaceLab的室内和室外的智能导航系统

package org.placelab.midp.server;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.placelab.core.PlacelabProperties;

/**
 * Upload service for new location format used in sun valley.
 */

public class LocationService implements BluetoothService {
	
	public void newClient (DataInputStream in, DataOutputStream out) {
		File f = null;
		
		for (int i = 0;; i++) {
			f = new File(PlacelabProperties.get("placelab.datadir") + File.separator + 
					"locations-" + i + ".txt");
			
			if (!f.exists())
				break;
		}

		try {
			System.out.println("Saving to " + f.getName());
			DataOutputStream dos = new DataOutputStream(new FileOutputStream(f));
			
			int nRecords = in.readInt();
			System.out.println("Number of records: " + nRecords);
			
			for (int i=1;i<=nRecords;i++) {
				System.out.println("Receiving record # " + i);
				
				int size = in.readInt();
				
				dos.writeInt(size);
				
				for (int b=0;b<size;b++) 
					dos.write(in.read());
				
			}
				
		} catch (IOException e) {
			System.err.println("Failed: " + e);
			e.printStackTrace();
		}
		
	}
	
	public byte getServiceType () {
		return BluetoothService.LOCATION_UPLOAD_SERVICE;
	}
	
	public String getName () {
		return "Location Upload Service";
	}
	
}