equals, hashCode, toString method rewriting

package com.dada.shiro.entity;
 
import java.io.Serializable;
 
public class Organization implements Serializable {
	private Long id;//编号
	private String name;// 组织机构名称
	private Long parentId;// 父编号
	private String parentIds;// 父编号列表
	private Boolean available = Boolean.FALSE;
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Long getParentId() {
		return parentId;
	}
	public void setParentId(Long parentId) {
		this.parentId = parentId;
	}
	public String getParentIds() {
		return parentIds;
	}
	public void setParentIds(String parentIds) {
		this.parentIds = parentIds;
	}
	public Boolean getAvailable() {
		return available;
	}
	public void setAvailable(Boolean available) {
		this.available = available;
	}
	
	public boolean isRootNode() {
		return parentId == 0;
	}
	
	public String makeSelfAsParentIds() {
		return getParentIds() + getId() + "/";
	}
	
	@Override
	public boolean equals(Object that) {
		// 1.判断一定相等
		if(this == that) return true;
 
		// 2.判断一定不等
		if(that == null || getClass() != that.getClass()) return false;
		
		// 3.判断可能相等的情况
		Organization thatObj = (Organization) that;
		if(id==null ? thatObj.id !=null : !id.equals(thatObj.id)) return false;
		
		return true;
	}
	
	@Override
	public int hashCode() {
		return id == null ? 0 : id.hashCode();
	}
	
	@Override
	public String toString() {
		return "Organization {" +
				"id=" + id + 
				", name='" + name + "'" +
				", parentId=" + parentId +
				", parentIds='" + parentIds + "'" +
				", available=" + available
				+ "}";
	}
}