Bi-directional one-to-many relationship does not work
I have made an application that displays a lot of questions from my database. For this I have made a question entity. I want to be able to "report" a question for being poor/good and so on, so for this I made a feedback entity. 

The relationship between these would be: one question may have many feedbacks, and one feedback belongs to one question.

The problem is that when I save the question feedback instance it all maps perfectly in the database, but when I open a question and loops through all the feedbacks none of the feedbacks added is displayed. In order to have them displayed I need to re-deploy the web application. 

Why does this happen? 

**For readability I only show the parts involved**

**QuestionFeedback entity**

    public class QuestionFeedback implements Serializable {
    
        @ManyToOne
        private Question question;
        ....
    
        public void setQuestion(Question question) {
            this.question = question;
    
            if (!question.getFeedbacks().contains(this)) {
                question.getFeedbacks().add(this);
            }
        }
        ....
    }


**Question entity**

    @Entity
    public class Question implements Serializable {
    
        @OneToMany(mappedBy = "question", fetch = FetchType.EAGER)
        private List<QuestionFeedback> feedbacks;
    
        public Question() {
            feedbacks = new ArrayList<QuestionFeedback>();
        }
    
        public void addFeedback(QuestionFeedback questionFeedback) {
    
            if (!getFeedbacks().contains(questionFeedback)) {
                getFeedbacks().add(questionFeedback);
            }
    
            if (questionFeedback.getQuestion() != this) {
                questionFeedback.setQuestion(this);
            }
        }
    }

**Backing bean for the report page**

The question entity is already retrieved from the database.

    public String flag() {
        questionFeedback.setQuestion(question);
        questionFeedbackService.persist(questionFeedback);
    
        return "index";
    }

**DAO class**

    public void persist(QuestionFeedback questionFeedback) {
        entityManager.persist(questionFeedback);
    }


Bi-directional one-to-many relationship does not work
===

I have made an application that displays a lot of questions from my database. For this I have made a question entity. I want to be able to "report" a question for being poor/good and so on, so for this I made a feedback entity. 

The relationship between these would be: one question may have many feedbacks, and one feedback belongs to one question.

The problem is that when I save the question feedback instance it all maps perfectly in the database, but when I open a question and loops through all the feedbacks none of the feedbacks added is displayed. In order to have them displayed I need to re-deploy the web application. 

Why does this happen? 

**For readability I only show the parts involved**

**QuestionFeedback entity**

    public class QuestionFeedback implements Serializable {
    
        @ManyToOne
        private Question question;
        ....
    
        public void setQuestion(Question question) {
            this.question = question;
    
            if (!question.getFeedbacks().contains(this)) {
                question.getFeedbacks().add(this);
            }
        }
        ....
    }


**Question entity**

    @Entity
    public class Question implements Serializable {
    
        @OneToMany(mappedBy = "question", fetch = FetchType.EAGER)
        private List<QuestionFeedback> feedbacks;
    
        public Question() {
            feedbacks = new ArrayList<QuestionFeedback>();
        }
    
        public void addFeedback(QuestionFeedback questionFeedback) {
    
            if (!getFeedbacks().contains(questionFeedback)) {
                getFeedbacks().add(questionFeedback);
            }
    
            if (questionFeedback.getQuestion() != this) {
                questionFeedback.setQuestion(this);
            }
        }
    }

**Backing bean for the report page**

The question entity is already retrieved from the database.

    public String flag() {
        questionFeedback.setQuestion(question);
        questionFeedbackService.persist(questionFeedback);
    
        return "index";
    }

**DAO class**

    public void persist(QuestionFeedback questionFeedback) {
        entityManager.persist(questionFeedback);
    }

