student.java

EJB3.0实现学生、社团实体及它们的M:M关系

package ManyToManyEntityBean;

import javax.persistence.Entity;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.Table;

@SuppressWarnings("serial")
@Entity
@Table(name = "Student")
public class Student implements Serializable {
	private Integer studentid;
	private String StudentName;
	private Set<Consortium> consortiums = new HashSet<Consortium>();

	public Student() {
	}

	public Student(String studentName) {
		StudentName = studentName;
	}

	@Id
	@GeneratedValue
	public Integer getStudentid() {
		return studentid;
	}

	public void setStudentid(Integer studentid) {
		this.studentid = studentid;
	}

	@Column(nullable = false)
	public String getStudentName() {
		return StudentName;
	}

	public void setStudentName(String studentName) {
		StudentName = studentName;
	}

	@ManyToMany(mappedBy = "students")
	public Set<Consortium> getConsortiums() {
		return consortiums;
	}

	public void setConsortiums(Set<Consortium> consortiums) {
		this.consortiums = consortiums;
	}

}