mapService.java

package se252.jan15.calvinandhobbes.project0;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
/**
 * tripInfo web service exposed at "trip" path relative to base URI
 * 
 * @author Arnab sen
 * @version 1.0
 * @see <a href="http://www.serc.iisc.ernet.in/~simmhan/SE252/">IISc SERC 'SE252:Intro to Cloud Computing' Course Webpage</a>
 * 
 * (c) Arnab sen, 2015
 * This work is licensed under a Attribution 4.0 International (CC BY 4.0).
 * http://creativecommons.org/licenses/by/4.0/
 */

public class mapService {
  
    /**
     * Method handling HTTP GET requests. The request expects a "msg" input parameter with value of type string. 
     * The returned object will be sent to the client as JSON media type.
     *
     * @return JSON form of EchoMessage will be returned as response.
     * @throws IOException 
     */
	public static String mapStr = "";
	public static String mapStr2 = "";
	public static String mapStr3 = "";
	
	@Path("map")
	public static class Map{
		@GET
		@Produces(MediaType.TEXT_HTML)
		public String tripinfo() throws IOException {
			if(!mapStr.equals(""))
				return mapStr;
			else {
				Scanner map = new Scanner(new File("map.html"));
				mapStr = map.useDelimiter("\\Z").next();
				map.close();
			}
			return mapStr;
		} 
	}
	
	@Path("mapEvent")
	public static class Map2{
		@GET
		@Produces(MediaType.TEXT_HTML)
		public String tripinfo() throws IOException {
			if(!mapStr2.equals(""))
				return mapStr2;
			else {
				Scanner map = new Scanner(new File("map2.html"));
				mapStr2 = map.useDelimiter("\\Z").next();
				map.close();
			}
			return mapStr2;
		} 
	}
	
	@Path("mapSDB")
	public static class MapSDB{
		@GET
		@Produces(MediaType.TEXT_HTML)
		public String tripinfo() throws IOException {
			if(!mapStr3.equals(""))
				return mapStr3;
			else {
				Scanner map = new Scanner(new File("mapSDB.html"));
				mapStr3 = map.useDelimiter("\\Z").next();
				map.close();
			}
			return mapStr3;
		} 
	}
	
	@Path("update")
	public static class MapUpdate{
		@GET
		@Produces(MediaType.TEXT_HTML)
		public String tripinfo() throws IOException {
			String updateStr = "";
			Scanner map = new Scanner(new File("update.html"));
			updateStr = map.useDelimiter("\\Z").next();
			map.close();
			return updateStr;
		} 
	}
	
	@Path("clear")
	public static class Clear{
		@GET
		@Produces(MediaType.TEXT_HTML)
		public String tripinfo() throws IOException {
			Scanner map = new Scanner(new File("map.html"));
			String mapStr = map.useDelimiter("\\Z").next();
			map.close();
			return mapStr;
		} 
	}
}