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M2MovieRecommander
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Merge commit 'fb23a16'

This commit is contained in:
Quentin Rouland 2016-11-30 13:36:02 +01:00
parent 8524e3b485 fb23a16374
commit fc31eb97d4
5 changed files with 226 additions and 4 deletions
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81
src/main/java/com/camillepradel/movierecommender/controller/MainController.java
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@ -5,9 +5,11 @@ import java.util.LinkedList;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.bind.annotation.RequestMethod;
import com.camillepradel.movierecommender.model.Genre;
import com.camillepradel.movierecommender.model.Movie;
@ -28,7 +30,7 @@ import java.util.logging.Logger;
import org.neo4j.driver.v1.Record;
import org.neo4j.driver.v1.Session;
import org.neo4j.driver.v1.StatementResult;
import com.camillepradel.movierecommender.model.Rating;
@Controller
public class MainController {
@ -44,7 +46,7 @@ public class MainController {
mv.addObject("name", name);
return mv;
}
@RequestMapping("/movies")
public ModelAndView showMovies(
@RequestParam(value = "user_id", required = false) Integer userId) {
@ -63,7 +65,7 @@ public class MainController {
int id=0;
StatementResult result = null;
try {
try {
if (userId != null && userId >=0 ){
result = Neo4jConnector.getInstance().getConnection().run( "MATCH (me:User { id: "+userId+" })-[:RATED]->(movie:Movie) -[:CATEGORIZED_AS]->(g:Genre) RETURN movie.title as movies, collect(g.name) as genre;" );
@ -142,4 +144,77 @@ public class MainController {
}
return listMovies;
}
@RequestMapping(value = "/movieratings", method = RequestMethod.GET)
public ModelAndView showMoviesRattings(
@RequestParam(value = "user_id", required = true) Integer userId) {
System.out.println("GET /movieratings for user " + userId);
// TODO: write query to retrieve all movies from DB
List<Movie> allMovies = new LinkedList<Movie>();
Genre genre0 = new Genre(0, "genre0");
Genre genre1 = new Genre(1, "genre1");
Genre genre2 = new Genre(2, "genre2");
allMovies.add(new Movie(0, "Titre 0", Arrays.asList(new Genre[] {genre0, genre1})));
allMovies.add(new Movie(1, "Titre 1", Arrays.asList(new Genre[] {genre0, genre2})));
allMovies.add(new Movie(2, "Titre 2", Arrays.asList(new Genre[] {genre1})));
allMovies.add(new Movie(3, "Titre 3", Arrays.asList(new Genre[] {genre0, genre1, genre2})));
// TODO: write query to retrieve all ratings from the specified user
List<Rating> ratings = new LinkedList<Rating>();
ratings.add(new Rating(new Movie(0, "Titre 0", Arrays.asList(new Genre[] {genre0, genre1})), userId, 3));
ratings.add(new Rating(new Movie(2, "Titre 2", Arrays.asList(new Genre[] {genre1})), userId, 4));
ModelAndView mv = new ModelAndView("movieratings");
mv.addObject("userId", userId);
mv.addObject("allMovies", allMovies);
mv.addObject("ratings", ratings);
return mv;
}
@RequestMapping(value = "/movieratings", method = RequestMethod.POST)
public String saveOrUpdateRating(@ModelAttribute("rating") Rating rating) {
System.out.println("POST /movieratings for user " + rating.getUserId()
+ ", movie " + rating.getMovie().getId()
+ ", score " + rating.getScore());
// TODO: add query which
// - add rating between specified user and movie if it doesn't exist
// - update it if it does exist
return "redirect:/movieratings?user_id=" + rating.getUserId();
}
@RequestMapping(value = "/recommendations", method = RequestMethod.GET)
public ModelAndView ProcessRecommendations(
@RequestParam(value = "user_id", required = true) Integer userId,
@RequestParam(value = "processing_mode", required = false, defaultValue = "0") Integer processingMode){
System.out.println("GET /movieratings for user " + userId);
// TODO: process recommendations for specified user exploiting other users ratings
// use different methods depending on processingMode parameter
Genre genre0 = new Genre(0, "genre0");
Genre genre1 = new Genre(1, "genre1");
Genre genre2 = new Genre(2, "genre2");
List<Rating> recommendations = new LinkedList<Rating>();
String titlePrefix;
if (processingMode.equals(0))
titlePrefix = "0_";
else if (processingMode.equals(1))
titlePrefix = "1_";
else if (processingMode.equals(2))
titlePrefix = "2_";
else
titlePrefix = "default_";
recommendations.add(new Rating(new Movie(0, titlePrefix + "Titre 0", Arrays.asList(new Genre[] {genre0, genre1})), userId, 5));
recommendations.add(new Rating(new Movie(1, titlePrefix + "Titre 1", Arrays.asList(new Genre[] {genre0, genre2})), userId, 5));
recommendations.add(new Rating(new Movie(2, titlePrefix + "Titre 2", Arrays.asList(new Genre[] {genre1})), userId, 4));
recommendations.add(new Rating(new Movie(3, titlePrefix + "Titre 3", Arrays.asList(new Genre[] {genre0, genre1, genre2})), userId, 3));
ModelAndView mv = new ModelAndView("recommendations");
mv.addObject("recommendations", recommendations);
return mv;
}
}

2
src/main/java/com/camillepradel/movierecommender/model/Movie.java
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@ -14,7 +14,7 @@ public class Movie {
this.genres = genres;
}
public long getId() {
public int getId() {
return this.id;
}

67
src/main/java/com/camillepradel/movierecommender/model/Rating.java Normal file
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@ -0,0 +1,67 @@
package com.camillepradel.movierecommender.model;
import java.util.Arrays;
public class Rating {
private Movie movie;
private int userId;
private int score;
public Rating() {
this.movie = null;
this.userId = 0;
this.score = 0;
}
public Rating(Movie movie, int userId, int score) {
this.movie = movie;
this.userId = userId;
this.score = score;
}
public Rating(Movie movie, int userId) {
this.movie = movie;
this.userId = userId;
this.score = 0;
}
public Movie getMovie() {
return this.movie;
}
public void setMovie(Movie movie) {
this.movie = movie;
}
// pseudo getter and setter for movie id
// (in order to automatically serialize Rating object on form submission)
public int getMovieId() {
return this.movie.getId();
}
public void setMovieId(int movieId) {
// TODO: get movie with id movieId from database
String title = "Titre";
Genre genre0 = new Genre(0, "genre0");
Genre genre1 = new Genre(1, "genre1");
this.movie = new Movie(movieId, title, Arrays.asList(new Genre[] {genre0, genre1}));
}
public int getUserId() {
return this.userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public int getScore() {
return this.score;
}
public void setScore(int score) {
this.score = score;
}
}

57
src/main/webapp/WEB-INF/views/movieratings.jsp Normal file
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@ -0,0 +1,57 @@
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Films</title>
</head>
<body>
<h1>
Vos films notés
</h1>
<ul>
<c:forEach items="${ratings}" var="rating">
<li>
${rating.getMovie().id} - ${rating.score}
</li>
</c:forEach>
</ul>
<h1>
Ajouter une note
</h1>
<ul>
<c:forEach items="${allMovies}" var="movie">
<!-- get movie rating if any -->
<c:set var="score" value="0" />
<c:forEach items="${ratings}" var="rating">
<c:if test="${rating.getMovie().id eq movie.id}">
<c:set var="score" value="${rating.score}" />
</c:if>
</c:forEach>
<li>
${movie.title} - ${score} (user id: ${userId}, movie id: ${movie.id})
<form method="post" action="/MovieRecommender/movieratings">
<input type="number" name="userId" value="${userId}" hidden="hidden">
<input type="number" name="movieId" value="${movie.id}" hidden="hidden">
<input type="radio" name="score" onclick="this.form.submit();" value="1" <c:if test="${score eq 1}">checked</c:if>>
<input type="radio" name="score" onclick="this.form.submit();" value="2" <c:if test="${score eq 2}">checked</c:if>>
<input type="radio" name="score" onclick="this.form.submit();" value="3" <c:if test="${score eq 3}">checked</c:if>>
<input type="radio" name="score" onclick="this.form.submit();" value="4" <c:if test="${score eq 4}">checked</c:if>>
<input type="radio" name="score" onclick="this.form.submit();" value="5" <c:if test="${score eq 5}">checked</c:if>>
</form>
<ul>
<c:forEach items="${movie.genres}" var="genre">
<li>
${genre.name}
</li>
</c:forEach>
</ul>
</li>
</c:forEach>
</ul>
</body>
</html>

23
src/main/webapp/WEB-INF/views/recommendations.jsp Normal file
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@ -0,0 +1,23 @@
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Recommandations</title>
</head>
<body>
<h1>
Vos recommandations
</h1>
<ul>
<c:forEach items="${recommendations}" var="recommendation">
<li>
${recommendation.getMovie().title}
</li>
</c:forEach>
</ul>
</body>
</html>