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M2MovieRecommander
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noter un film en neo4j

This commit is contained in:
DonRenando 2016-12-01 13:56:05 +01:00
parent e9627fa59a
commit c393a86f23
3 changed files with 42 additions and 31 deletions
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37
src/main/java/com/camillepradel/movierecommender/controller/MainController.java
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@ -13,23 +13,6 @@ 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
@ -51,8 +34,8 @@ public class MainController {
public ModelAndView showMovies(
@RequestParam(value = "user_id", required = false) Integer userId) {
//List<Movie> movies = Neo4JController.getMoviesNeo4JByUser(userId);
List<Movie> movies = MongoDBController.getMoviesMongoDBByUser(userId);
List<Movie> movies = Neo4JController.getMoviesNeo4JByUser(userId);
//List<Movie> movies = MongoDBController.getMoviesMongoDBByUser(userId);
ModelAndView mv = new ModelAndView("movies");
mv.addObject("userId", userId);
@ -67,13 +50,13 @@ public class MainController {
System.out.println("GET /movieratings for user " + userId);
// write query to retrieve all movies from DB
List<Movie> allMovies = MongoDBController.getMoviesMongoDBByUser(userId);
//List<Movie> allMovies =Neo4JController.getMoviesNeo4JByUser(userId);
//List<Movie> allMovies = MongoDBController.getMoviesMongoDBByUser(null);
List<Movie> allMovies =Neo4JController.getMoviesNeo4JByUser(null);
// write query to retrieve all ratings from the specified user
List<Rating> ratings = MongoDBController.getRatingMongoDBByUser(userId);
//List<Rating> ratings = MongoDBController.getRatingMongoDBByUser(userId);
//List<Rating> ratings=Neo4JController.GetMoviesRatingNeo4JByUser(userId);
List<Rating> ratings=Neo4JController.GetMoviesRatingNeo4JByUser(userId);
ModelAndView mv = new ModelAndView("movieratings");
mv.addObject("userId", userId);
mv.addObject("allMovies", allMovies);
@ -85,13 +68,9 @@ public class MainController {
@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()
+ ", movie " + rating.getMovie().getTitle()
+ ", 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
Neo4JController.updateMovieRatingNeo4J(rating);
return "redirect:/movieratings?user_id=" + rating.getUserId();
}

35
src/main/java/com/camillepradel/movierecommender/controller/Neo4JController.java
View File

@ -58,7 +58,7 @@ public class Neo4JController {
public static List<Rating>GetMoviesRatingNeo4JByUser(Integer userId){
List<Rating> moviesRating = new LinkedList<Rating>();
List<Rating> moviesRating = new LinkedList<Rating>();
StatementResult result = null;
try {
@ -96,5 +96,38 @@ public class Neo4JController {
return moviesRating;
}
public static void updateMovieRatingNeo4J(Rating note){
Integer user_id = note.getUserId();
try {
if (user_id != null && user_id >=0 ){
Neo4jConnector.getInstance().getConnection().run( "MATCH (u:User{id:"+user_id+"})-[r:RATED]->(m:Movie)\n" +
"where m.id ="+note.getMovie().getId()+"\n" +
"delete r" );
}
} catch (ConnectException ex) {
System.out.println(ex);
}
finally{
Neo4jConnector.getInstance().close();
}
try {
Neo4jConnector.getInstance().getConnection().run( "MATCH (u:User{id:"+user_id+"}),(m:Movie)\n" +
"where m.id = "+note.getMovie().getId()+"\n" +
"CREATE (u)-[r:RATED{note:"+note.getScore()+", timestamp: "+System.currentTimeMillis()+"}]->(m) \n" +
"RETURN *" );
} catch (ConnectException ex) {
System.out.println(ex);
}
finally{
Neo4jConnector.getInstance().close();
}
}
}

1
src/main/java/com/camillepradel/movierecommender/controller/Neo4jConnector.java
View File

@ -6,7 +6,6 @@
package com.camillepradel.movierecommender.controller;
import java.net.ConnectException;
import org.neo4j.driver.v1.*;
import org.neo4j.driver.v1.exceptions.Neo4jException;
/**
*