Subject.java

/**
 * Copyright (c)2010-2011 Enterprise Website Content Management System(EWCMS), All rights reserved.
 * EWCMS PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 * http://www.ewcms.com
 */

package com.ewcms.plugin.vote.model;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

import org.codehaus.jackson.annotate.JsonIgnore;

/**
 * 问卷调查主题
 * 
 * <ul>
 * <li>id:编号</li>
 * <li>title:标题</li>
 * <li>status:选项状态</li>
 * <li>subjectItems:问卷调查明细列表对象集合</li>
 * <li>sort:排序</li>
 * </ul>
 * 
 * @author 吴智俊
 */
@Entity
@Table(name = "plugin_vote_subject")
@SequenceGenerator(name = "seq_plugin_vote_subject", sequenceName = "seq_plugin_vote_subject_id", allocationSize = 1)
public class Subject implements Serializable {

	private static final long serialVersionUID = 3724785214252997515L;

	/**
	 * 选项状态枚举
	 * @author wuzhijun
	 */
	public enum Status{
		RADIO("单选"),OPTION("多选"),INPUT("录入");
		
		private String description;
		
		private Status(String description){
			this.description = description;
		}
		
		public String getDescription(){
			return description;
		}
	}
	
	@Id
	@GeneratedValue(generator = "seq_plugin_vote_subject", strategy = GenerationType.SEQUENCE)
	@Column(name = "id")
	private Long id;
	@Column(name = "title", nullable = false, length = 100)
	private String title;
	@Enumerated(EnumType.STRING)
	@Column(name = "status")
	private Status status;
	@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, targetEntity = SubjectItem.class, orphanRemoval = true)
	@JoinColumn(name = "subject_id")
	@OrderBy(value = "sort")
	private List<SubjectItem> subjectItems = new ArrayList<SubjectItem>();
	@Column(name = "sort")
	private Long sort;
	
	public Subject(){
		this.status = Status.RADIO;
	}

	public Long getId() {
		return id;
	}

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

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public Status getStatus() {
		return status;
	}

	public void setStatus(Status status) {
		this.status = status;
	}

	public String getStatusDescription(){
		if (status != null){
			return status.getDescription();
		}else{
			return Status.RADIO.getDescription();
		}
	}
	
	@JsonIgnore
	public List<SubjectItem> getSubjectItems() {
		return subjectItems;
	}

	public void setSubjectItems(List<SubjectItem> subjectItems) {
		this.subjectItems = subjectItems;
	}

	public Long getSort() {
		return sort;
	}

	public void setSort(Long sort) {
		this.sort = sort;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Subject other = (Subject) obj;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		return true;
	}
}