QRouland/M2MovieRecommander
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neo4J rating

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This commit is contained in:
DonRenando 2016-12-01 10:03:28 +01:00
parent fc31eb97d4
commit 538b17474a
2 changed files with 108 additions and 50 deletions
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54
src/main/java/com/camillepradel/movierecommender/controller/MainController.java
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@ -13,23 +13,12 @@ import org.springframework.web.bind.annotation.RequestMethod;
import com.camillepradel.movierecommender.model.Genre;
import com.camillepradel.movierecommender.model.Movie;
import com.mongodb.BasicDBList;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import java.util.ArrayList;
import org.bson.Document;
import java.net.ConnectException;
import java.util.logging.Level;
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
@ -40,7 +29,6 @@ public class MainController {
public ModelAndView showMessage(
@RequestParam(value = "name", required = false, defaultValue = "World") String name) {
System.out.println("in controller");
ModelAndView mv = new ModelAndView("helloworld");
mv.addObject("message", message);
mv.addObject("name", name);
@ -51,49 +39,18 @@ public class MainController {
public ModelAndView showMovies(
@RequestParam(value = "user_id", required = false) Integer userId) {
//List<Movie> movies = getMoviesNeo4JByUser(userId);
List<Movie> movies = getMoviesMongoDBByUser(userId);
List<Movie> movies = Neo4JController.getMoviesNeo4JByUser(userId);
//List<Movie> movies = getMoviesMongoDBByUser(userId);
ModelAndView mv = new ModelAndView("movies");
mv.addObject("userId", userId);
mv.addObject("movies", movies);
return mv;
}
public List<Movie>getMoviesNeo4JByUser (Integer userId){
List<Movie> movies = new LinkedList<Movie>();
String oldMovie=null;
int id=0;
StatementResult result = null;
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;" );
}
else{
result = Neo4jConnector.getInstance().getConnection().run( "MATCH (m:Movie) -[:CATEGORIZED_AS]->(g:Genre) RETURN m.title as movies, collect(g.name) as genre;" );
}
} catch (ConnectException ex) {
Logger.getLogger(MainController.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
Neo4jConnector.getInstance().close();
}
while ( result.hasNext() )
{
Record record = result.next();
String[] listGenre = record.get("genre").toString().split(",");
List<Genre> listTypeGenre = new LinkedList<Genre>();
for(String g : listGenre){
if(g != null)
listTypeGenre.add(new Genre(id, g.replace("\"", "").replace("[", "").replace("]", "")));
}
movies.add(new Movie(id, record.get("movies").asString(), (listTypeGenre.isEmpty())?null:listTypeGenre ) );
id+=1;
}
return movies;
}
public List<Movie>getMoviesMongoDBByUser(Integer user_id){
@ -162,9 +119,10 @@ public class MainController {
// 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));
//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));
ratings=Neo4JController.GetMoviesRatingNeo4JByUser(userId);
ModelAndView mv = new ModelAndView("movieratings");
mv.addObject("userId", userId);
mv.addObject("allMovies", allMovies);

100
src/main/java/com/camillepradel/movierecommender/controller/Neo4JController.java Normal file
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@ -0,0 +1,100 @@
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package com.camillepradel.movierecommender.controller;
import com.camillepradel.movierecommender.model.Genre;
import com.camillepradel.movierecommender.model.Movie;
import com.camillepradel.movierecommender.model.Rating;
import java.net.ConnectException;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.neo4j.driver.v1.Record;
import org.neo4j.driver.v1.StatementResult;
/**
*
* @author renando
*/
public class Neo4JController {
public static List<Movie>getMoviesNeo4JByUser (Integer userId){
List<Movie> movies = new LinkedList<Movie>();
int id=0;
StatementResult result = null;
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;" );
}
else{
result = Neo4jConnector.getInstance().getConnection().run( "MATCH (m:Movie) -[:CATEGORIZED_AS]->(g:Genre) RETURN m.title as movies, collect(g.name) as genre;" );
}
} catch (ConnectException ex) {
Logger.getLogger(MainController.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
Neo4jConnector.getInstance().close();
}
while ( result.hasNext() )
{
Record record = result.next();
String[] listGenre = record.get("genre").toString().split(",");
List<Genre> listTypeGenre = new LinkedList<Genre>();
for(String g : listGenre){
if(g != null)
listTypeGenre.add(new Genre(id, g.replace("\"", "").replace("[", "").replace("]", "")));
}
movies.add(new Movie(id, record.get("movies").asString(), (listTypeGenre.isEmpty())?null:listTypeGenre ) );
id+=1;
}
return movies;
}
public static List<Rating>GetMoviesRatingNeo4JByUser(Integer userId){
List<Rating> moviesRating = new LinkedList<Rating>();
StatementResult result = null;
try {
if (userId != null && userId >=0 ){
result = Neo4jConnector.getInstance().getConnection().run( "MATCH (u:User{id:"+userId+"})-[r:RATED]->(m:Movie)-[:CATEGORIZED_AS]->(g:Genre) RETURN m.id AS id, m.title AS title, collect(g.name) AS genre, r.note AS note ORDER BY id" );
}
else{
return null;
}
} catch (ConnectException ex) {
Logger.getLogger(MainController.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
Neo4jConnector.getInstance().close();
}
Movie movie = null;
Rating rate = null;
while ( result.hasNext() )
{
Record record = result.next();
System.out.println(record.get("p").toString());
String[] listGenre = record.get("genre").toString().split(",");
List<Genre> listTypeGenre = new LinkedList<Genre>();
for(String g : listGenre){
if(g != null)
listTypeGenre.add(new Genre(0, g.replace("\"", "").replace("[", "").replace("]", "")));
}
movie = new Movie(record.get("id").asInt(), record.get("title").asString(),listTypeGenre );
rate = new Rating(movie, userId, record.get("note").asInt());
moviesRating.add(rate);
}
return moviesRating;
}
}