java 树形结构设计(一) Struts + Hibernate

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JAVA

Java 数据结构 Hibernate Struts Myeclipse

该树形结构是一颗关于地理信息的一颗树：

step 1、构建数据库(cteate_table_sql)
/*==============================================================*/
/* Table: DIM_GEOGRAPHY                                         */
/*==============================================================*/
create table DIM_GEOGRAPHY (
   ID                                                    integer              not null,
   GEOGRAPHY_CODE                VARCHAR(32)          not null,
   GEOGRAPHY_NAME                  VARCHAR(32)          not null,
   GEOGRAPHY_NAME_EN         VARCHAR(32)          null,
   GEOGRAPHY_LEVEL                integer              not null,
   CITY_TYPE1                                 integer              not null,
   CITY_TYPE2                                 integer              null,
   GEO_TREE_CODE                    VARCHAR(32)          null,
   PARENT_GEOGRAPHY_ID      VARCHAR(32)          null,
   USAGE_FLAG                              VARCHAR(2)           not null,
   CREATE_BY                                 VARCHAR(32)          not null,
   CREATE_DATE                            VARCHAR(30)          not null,
   LASTUPDATE_BY                        VARCHAR(32)          not null,
   LASTUPDATE_DATE                   VARCHAR(30)          not null,
   constraint PK_DIM_GEOGRAPHY primary key (ID),
   constraint FK_993 foreign key (CITY_TYPE2)
      references DIM_DICT_ITEM (ID),
   constraint FK_333 foreign key (CITY_TYPE1)
      references DIM_DICT_ITEM (ID)
)
go

其中DIM_DICT_ITEM是一个数据字典表，存一些系统中常用数据，在这里存储城市类型。

step 2、构建Hibernate PO

/*========================================================================================*/
/* Bean: DimGeography */
/*========================================================================================*/

java 代码

/*
* Created Mon Oct 16 14:07:33 CST 2006 by MyEclipse Hibernate Tool.
*/
package com.fzfx88.po.base;
import java.io.Serializable;
import com.winchannel.base.service.GeographyService;
/**
* A class that represents a row in the 'DIM_GEOGRAPHY' table.
* This class may be customized as it is never re-generated
* after being created.
*/
public class DimGeography
extends AbstractDimGeography
implements Serializable
{
/**
* Simple constructor of DimGeography instances.
*/
public DimGeography()
{
}
/**
* Constructor of DimGeography instances given a simple primary key.
* @param id
*/
public DimGeography(java.lang.Integer id)
{
super(id);
}
/* Add customized code below */
private DimGeography country;
private DimGeography province;
private DimGeography city;
private Integer countryId;
private Integer provinceId;
private Integer cityId;
private String countryName;
private String provinceName;
private String cityName;
public void getParents(){
String treeCode = this.getGeoTreeCode();
int i = treeCode.length()/3;
GeographyService gService =new GeographyService();
// if(i>=1){
// country= gService.retrieveOrgByTreeCode(treeCode,1);
// this.countryId = country.getId();
// this.countryName =country.getGeographyName();
// }
if(i>=1){
province= gService.retrieveOrgByTreeCode(treeCode,1);
if(province!=null){
this.provinceId = province.getId();
this.provinceName =province.getGeographyName();
}
}
if(i>=2){
city= gService.retrieveOrgByTreeCode(treeCode,2);
if(city !=null){
this.cityId = city.getId();
this.cityName =city.getGeographyName();
}
}
}
/**
* @return Returns the cityId.
*/
public Integer getCityId() {
return cityId;
}
/**
* @param cityId The cityId to set.
*/
public void setCityId(Integer cityId) {
this.cityId = cityId;
}
/**
* @return Returns the cityName.
*/
public String getCityName() {
return cityName;
}
/**
* @param cityName The cityName to set.
*/
public void setCityName(String cityName) {
this.cityName = cityName;
}
/**
* @return Returns the countryId.
*/
public Integer getCountryId() {
return countryId;
}
/**
* @param countryId The countryId to set.
*/
public void setCountryId(Integer countryId) {
this.countryId = countryId;
}
/**
* @return Returns the countryName.
*/
public String getCountryName() {
return countryName;
}
/**
* @param countryName The countryName to set.
*/
public void setCountryName(String countryName) {
this.countryName = countryName;
}
/**
* @return Returns the provinceId.
*/
public Integer getProvinceId() {
return provinceId;
}
/**
* @param provinceId The provinceId to set.
*/
public void setProvinceId(Integer provinceId) {
this.provinceId = provinceId;
}
/**
* @return Returns the provinceName.
*/
public String getProvinceName() {
return provinceName;
}
/**
* @param provinceName The provinceName to set.
*/
public void setProvinceName(String provinceName) {
this.provinceName = provinceName;
}
/**
* @return Returns the city.
*/
public DimGeography getCity() {
return city;
}
/**
* @param city The city to set.
*/
public void setCity(DimGeography city) {
this.city = city;
}
/**
* @return Returns the country.
*/
public DimGeography getCountry() {
return country;
}
/**
* @param country The country to set.
*/
public void setCountry(DimGeography country) {
this.country = country;
}
/**
* @return Returns the province.
*/
public DimGeography getProvince() {
return province;
}
/**
* @param province The province to set.
*/
public void setProvince(DimGeography province) {
this.province = province;
}
}

/*========================================================================================*/
/* Bean: AbstractDimGeography */
/*========================================================================================*/

java 代码

/*
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*
* Created Mon Oct 16 14:07:33 CST 2006 by MyEclipse Hibernate Tool.
*/
package com.fzfx88.po.base;
import java.io.Serializable;
/**
* A class that represents a row in the DIM_GEOGRAPHY table.
* You can customize the behavior of this class by editing the class, {@link DimGeography()}.
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*/
public abstract class AbstractDimGeography
implements Serializable
{
/** The cached hash code value for this instance. Settting to 0 triggers re-calculation. */
private int hashValue = 0;
/** The composite primary key value. */
private java.lang.Integer id;
private java.util.Set childGeo;
/** The value of the dimDistrSet one-to-many association. */
private java.lang.String geoTreeCode;
/** The value of the dimDistrSet one-to-many association. */
private java.util.Set dimDistrSet;
/** The value of the dimStoreSet one-to-many association. */
private java.util.Set dimStoreSet;
/** The value of the simple geographyCode property. */
private java.lang.String geographyCode;
/** The value of the simple geographyName property. */
private java.lang.String geographyName;
/** The value of the simple geographyNameEn property. */
private java.lang.String geographyNameEn;
/** The value of the simple geographyLevel property. */
private java.lang.Integer geographyLevel;
/** The value of the simple cityLevel property. */
private DimDictItem cityType1;
/** The value of the simple cityLevel property. */
private DimDictItem cityType2;
/** The value of the simple parentGeographyId property. */
private java.lang.Integer parentGeographyId;
/** The value of the simple usageFlag property. */
private java.lang.String usageFlag;
/** The value of the simple createBy property. */
private java.lang.String createBy;
/** The value of the simple createDate property. */
private java.lang.String createDate;
/** The value of the simple lastupdateBy property. */
private java.lang.String lastupdateBy;
/** The value of the simple lastupdateDate property. */
private java.lang.String lastupdateDate;
private Integer parentGeo;
/**
* Simple constructor of AbstractDimGeography instances.
*/
public AbstractDimGeography()
{
}
/**
* Constructor of AbstractDimGeography instances given a simple primary key.
* @param id
*/
public AbstractDimGeography(java.lang.Integer id)
{
this.setId(id);
}
/**
* Return the simple primary key value that identifies this object.
* @return java.lang.Integer
*/
public java.lang.Integer getId()
{
return id;
}
/**
* Set the simple primary key value that identifies this object.
* @param id
*/
public void setId(java.lang.Integer id)
{
this.hashValue = 0;
this.id = id;
}
/**
* Return the value of the GEOGRAPHY_CODE column.
* @return java.lang.String
*/
public java.lang.String getGeographyCode()
{
return this.geographyCode;
}
/**
* Set the value of the GEOGRAPHY_CODE column.
* @param geographyCode
*/
public void setGeographyCode(java.lang.String geographyCode)
{
this.geographyCode = geographyCode;
}
/**
* Return the value of the GEOGRAPHY_NAME column.
* @return java.lang.String
*/
public java.lang.String getGeographyName()
{
return this.geographyName;
}
/**
* Set the value of the GEOGRAPHY_NAME column.
* @param geographyName
*/
public void setGeographyName(java.lang.String geographyName)
{
this.geographyName = geographyName;
}
/**
* Return the value of the GEOGRAPHY_LEVEL column.
* @return java.lang.Integer
*/
public java.lang.Integer getGeographyLevel()
{
return this.geographyLevel;
}
/**
* Set the value of the GEOGRAPHY_LEVEL column.
* @param geographyLevel
*/
public void setGeographyLevel(java.lang.Integer geographyLevel)
{
this.geographyLevel = geographyLevel;
}
/**
* Return the value of the CITY_LEVEL column.
* @return java.lang.Integer
*/
public DimDictItem getCityType1()
{
return this.cityType1;
}
/**
* Set the value of the CITY_LEVEL column.
* @param cityLevel
*/
public void setCityType1(DimDictItem cityType1)
{
this.cityType1 = cityType1;
}
/**
* Return the value of the PARENT_GEOGRAPHY_ID column.
* @return java.lang.Integer
*/
public java.lang.Integer getParentGeographyId()
{
return this.parentGeographyId;
}
/**
* Set the value of the PARENT_GEOGRAPHY_ID column.
* @param parentGeographyId
*/
public void setParentGeographyId(java.lang.Integer parentGeographyId)
{
this.parentGeographyId = parentGeographyId;
}
/**
* Return the value of the USAGE_FLAG column.
* @return java.lang.String
*/
public java.lang.String getUsageFlag()
{
return this.usageFlag;
}
/**
* Set the value of the USAGE_FLAG column.
* @param usageFlag
*/
public void setUsageFlag(java.lang.String usageFlag)
{
this.usageFlag = usageFlag;
}
/**
* Return the value of the CREATE_BY column.
* @return java.lang.String
*/
public java.lang.String getCreateBy()
{
return this.createBy;
}
/**
* Set the value of the CREATE_BY column.
* @param createBy
*/
public void setCreateBy(java.lang.String createBy)
{
this.createBy = createBy;
}
/**
* Return the value of the CREATE_DATE column.
* @return java.lang.String
*/
public java.lang.String getCreateDate()
{
return this.createDate;
}
/**
* Set the value of the CREATE_DATE column.
&