package?com.wen.model;

import?java.util.Set;

import?javax.persistence.Entity;
import?javax.persistence.GeneratedValue;
import?javax.persistence.Id;
import?javax.persistence.JoinColumn;
import?javax.persistence.ManyToOne;
import?javax.persistence.OneToMany;
import?javax.persistence.Table;

import?org.hibernate.annotations.GenericGenerator;
import?org.hibernate.annotations.LazyCollection;
import?org.hibernate.annotations.LazyCollectionOption;

/**
?*?班級(jí)實(shí)體
?*?
?*?@author?John_wen
?*?@since?2015-1-17
?*/
@Entity
@Table（name?=?“t_classroom“）
public?class?Classroom?{
	/**
	?*?主鍵
	?*/
	private?String?id;
	/**
	?*?班級(jí)名稱
	?*/
	private?String?name;
	/**
	?*?班級(jí)的年級(jí)代碼
	?*/
	private?int?grade;
	/**
	?*?所在的專業(yè)
	?*/
	private?Specialty?specialty;
	/**
	?*?所包含的學(xué)生
	?*/
	private?Set?students;

	@Id
	@GenericGenerator（name?=?“UUID“?strategy?=?“uuid“）
	@GeneratedValue（generator?=?“UUID“）
	public?String?getId（）?{
		return?id;
	}

	public?void?setId（String?id）?{
		this.id?=?id;
	}

	public?String?getName（）?{
		return?name;
	}

	public?void?setName（String?name）?{
		this.name?=?name;
	}

	public?int?getGrade（）?{
		return?grade;
	}

	public?void?setGrade（int?grade）?{
		this.grade?=?grade;
	}

	@ManyToOne
	@JoinColumn（name?=?“sid“）
	public?Specialty?getSpecialty（）?{
		return?specialty;
	}

	public?void?setSpecialty（Specialty?specialty）?{
		this.specialty?=?specialty;
	}

	@OneToMany（mappedBy?=?“classroom“）
	@LazyCollection（LazyCollectionOption.EXTRA）
	public?Set?getStudents（）?{
		return?students;
	}

	public?void?setStudents（Set?students）?{
		this.students?=?students;
	}

}