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POhibernate annotation bi-directional mapping
 

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    <p>I'm building a web application using Spring framework and Hibernate with annotation and get stuck with a simple mapping between two entities.</p> <p>I'm trying to create a many-to-many relationship between User and Course. I followed one of the Hibernate tutorials and my implementation is as follows:</p> <p>User class:</p> <pre><code>@Entity @Table(name="USER") public class User { private Long id; private String email; private String password; private Set&lt;Course&gt; courses = new HashSet&lt;Course&gt;(0); @Id @GeneratedValue @Column(name="USER_ID") public Long getId() { return id; } public void setId(Long id) { this.id = id; } @Column(name="USER_EMAIL") public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @Column(name="USER_PASSWORD") public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @ManyToMany(cascade = CascadeType.ALL) @JoinTable(name = "USER_COURSE", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "COURSE_ID") }) public Set&lt;Course&gt; getCourses() { return courses; } public void setCourses(Set&lt;Course&gt; courses) { this.courses = courses; } } </code></pre> <p>Course class:</p> <pre><code>@Entity @Table(name="COURSE") public class Course { private Long id; private String name; @Id @GeneratedValue @Column(name="COURSE_ID") public Long getId() { return id; } public void setId(Long id) { this.id = id; } @Column(name="NAME") public String getName() { return name; } public void setName(String name) { this.name = name; } } </code></pre> <p>The problem is that this implementation only allows me to go one way</p> <pre><code>user.getCourses() </code></pre> <p>What do I need to change, so I can go in both directions?</p> <pre><code>user.getCourses() course.getUsers() </code></pre> <p>Any help would be appreciated.</p>
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    1. USsmithystar
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    1. COI've removed the spring tags, since the problem has nothing to do with Spring
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      1. USskaffman
 

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