From b41d9a8ac7071f16d69e87fa29c9ce3aeb8e3cd3 Mon Sep 17 00:00:00 2001
From: Giang Vu <dhgiang.vu@gmail.com>
Date: Mon, 30 Sep 2024 16:32:46 +1000
Subject: [PATCH] fix: many to many relationship annotations

---
 backend/src/main/java/org/acme/TimetableResource.java | 4 ++++
 backend/src/main/java/org/acme/domain/Room.java       | 3 +--
 backend/src/main/java/org/acme/domain/Timetable.java  | 8 +++++---
 backend/src/main/java/org/acme/domain/Unit.java       | 3 +--
 4 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/backend/src/main/java/org/acme/TimetableResource.java b/backend/src/main/java/org/acme/TimetableResource.java
index e6b4241..a7caf6d 100644
--- a/backend/src/main/java/org/acme/TimetableResource.java
+++ b/backend/src/main/java/org/acme/TimetableResource.java
@@ -36,11 +36,15 @@ public class TimetableResource {
     private int jobId = 0;
 
     @POST
+    @Transactional
     public Timetable handleRequest(Timetable problem) throws ExecutionException, InterruptedException {
         jobId += 1;
         String name = "Job" + Integer.toString(jobId);
 
+        // return problem;
+
         Timetable solution = solverManager.solve(name, problem).getFinalBestSolution();
+        solution.persist();
         return solution;
     }
 
diff --git a/backend/src/main/java/org/acme/domain/Room.java b/backend/src/main/java/org/acme/domain/Room.java
index 22ea8f7..5e5a048 100644
--- a/backend/src/main/java/org/acme/domain/Room.java
+++ b/backend/src/main/java/org/acme/domain/Room.java
@@ -37,7 +37,6 @@ public class Room extends PanacheEntity {
      */
     @JsonIgnoreProperties("room")
     @OneToMany(mappedBy = "room", orphanRemoval = false)
-    @JsonBackReference
     @JsonIgnore
     public List<Unit> units = new ArrayList<Unit>();
 
@@ -46,7 +45,7 @@ public class Room extends PanacheEntity {
      */
     @JsonIgnoreProperties("rooms")
     @ManyToMany(mappedBy = "rooms", fetch = FetchType.LAZY, cascade = {CascadeType.ALL})
-    @JsonManagedReference
+    // @JsonManagedReference
     @JsonIgnore
     public List<Timetable> timetables = new ArrayList<Timetable>();
 
diff --git a/backend/src/main/java/org/acme/domain/Timetable.java b/backend/src/main/java/org/acme/domain/Timetable.java
index 8b98933..b45fb47 100644
--- a/backend/src/main/java/org/acme/domain/Timetable.java
+++ b/backend/src/main/java/org/acme/domain/Timetable.java
@@ -23,6 +23,7 @@
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
  * Represents a timetable, the solution from the program.
@@ -56,9 +57,10 @@ public class Timetable extends PanacheEntity {
         joinColumns = @JoinColumn(name = "timetable_id"),
         inverseJoinColumns = @JoinColumn(name = "room_id")
     )
-    @JsonManagedReference
+    // @JsonManagedReference
     @ProblemFactCollectionProperty
-    @JsonIgnore
+    // @JsonIgnore
+    // @JsonProperty(access = JsonProperty.Access.WRITE_ONLY)
     @ValueRangeProvider
     public List<Room> rooms;
 
@@ -74,7 +76,7 @@ public class Timetable extends PanacheEntity {
         joinColumns = @JoinColumn(name = "timetable_id"),
         inverseJoinColumns = @JoinColumn(name = "unit_id")
     )
-    @JsonManagedReference
+    // @JsonManagedReference
     @PlanningEntityCollectionProperty
     public List<Unit> units;
 
diff --git a/backend/src/main/java/org/acme/domain/Unit.java b/backend/src/main/java/org/acme/domain/Unit.java
index d91c910..16409e1 100644
--- a/backend/src/main/java/org/acme/domain/Unit.java
+++ b/backend/src/main/java/org/acme/domain/Unit.java
@@ -63,7 +63,6 @@ public class Unit extends PanacheEntity {
     @JsonIgnoreProperties("units")
     @ManyToOne(cascade = {CascadeType.ALL})
     @JoinColumn(name = "room_id")
-    @JsonManagedReference
     @PlanningVariable
     public Room room;
 
@@ -74,7 +73,7 @@ public class Unit extends PanacheEntity {
      */
     @JsonIgnoreProperties("units")
     @ManyToMany(mappedBy = "units", fetch = FetchType.LAZY, cascade = {CascadeType.ALL})
-    @JsonManagedReference
+    // @JsonManagedReference
     @JsonIgnore
     public List<Timetable> timetables = new ArrayList<Timetable>();