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BroadLeaf 下定义ORM对象：Province，City，Area

2024-07-23 22:12:18   216人阅读

要点：BroadLeaf框架下定义ORM对象需要先定义一个接口, 然后在persistence-unit 的配置中进行声明,如不声明会报错：no persistent classes found for query class

IProvince：

import java.io.Serializable;import javax.annotation.Nonnull;public interface IProvince extends Serializable{        @Nonnull    public int getProv_Code();    @Nonnull    public String getProv_Name();}

Province：

import javax.persistence.CascadeType;import javax.persistence.EmbeddedId;import javax.persistence.Entity;import javax.persistence.FetchType;import javax.persistence.OneToMany;import javax.persistence.Table;import org.hibernate.annotations.Fetch;import org.hibernate.annotations.FetchMode;@Entity@Table(name = "PROVINCE")@SuppressWarnings("serial")public class Province implements IProvince,Serializable{	@EmbeddedId	private ProvincePK prov_PK;		@OneToMany(mappedBy = "province", cascade = CascadeType.MERGE, fetch = FetchType.LAZY)	@Fetch(FetchMode.SUBSELECT)	private Set<City> cities;		public int getProv_Code() {		return prov_PK.getProv_Code();	}	public String getProv_Name() {		return prov_PK.getProv_Name();	}	public Set<City> getCities() {		return cities;	}	public void setCities(Set<City> cities) {		this.cities = cities;	}	public ProvincePK getProv_PK() {		return prov_PK;	}	public void setProv_PK(ProvincePK prov_PK) {		this.prov_PK = prov_PK;	}	}

ProvincePK（联合主键类）： 

import java.io.Serializable;import javax.persistence.Embeddable;@Embeddable@SuppressWarnings("serial")public class ProvincePK implements Serializable{		private int prov_Code;		private String prov_Name;	@Override	public boolean equals(Object obj) {		if(obj instanceof ProvincePK){			if(((ProvincePK) obj).getProv_Code() == this.getProv_Code()					&& ((ProvincePK) obj).getProv_Name().equals(this.getProv_Name())){				return true;			}		}		return false;	}	@Override	public int hashCode() {		return prov_Name.hashCode() + prov_Code;	}	public int getProv_Code() {		return prov_Code;	}	public void setProv_Code(int prov_Code) {		this.prov_Code = prov_Code;	}	public String getProv_Name() {		return prov_Name;	}	public void setProv_Name(String prov_Name) {		this.prov_Name = prov_Name;	}}

 

ICity：

public interface ICity extends Serializable{        @Nonnull    public int getCity_Code();    @Nonnull    public String getCity_Name();}

City:

import org.hibernate.annotations.Fetch;import org.hibernate.annotations.FetchMode;@Entity@Table(name = "CITY")@SuppressWarnings("serial")public class City implements ICity,Serializable{	@EmbeddedId	private CityPK city_PK;		@OneToMany(mappedBy = "city", cascade = CascadeType.MERGE, fetch = FetchType.LAZY)	@Fetch(FetchMode.SUBSELECT)	private Set<Area> areas;		@ManyToOne	@JoinColumns({@JoinColumn(name = "prov_Code"),@JoinColumn(name = "prov_Name")})	private Province province;		public CityPK getCity_PK() {		return city_PK;	}	public void setCity_PK(CityPK city_PK) {		this.city_PK = city_PK;	}	public Set<Area> getAreas() {		return areas;	}	public void setAreas(Set<Area> areas) {		this.areas = areas;	}	public Province getProvince() {		return province;	}	public void setProvince(Province province) {		this.province = province;	}	@Override	public int getCity_Code() {		return city_PK.getCity_Code();	}	@Override	public String getCity_Name() {		return city_PK.getCity_Name();	}	}

 

CityPK:

@Embeddable@SuppressWarnings("serial")public class CityPK implements Serializable{	private int city_Code;		private String city_Name;		@Override	public boolean equals(Object obj) {		if(obj instanceof ProvincePK){			if(((CityPK) obj).getCity_Code() == this.getCity_Code()					&& ((CityPK) obj).getCity_Name().equals(this.getCity_Name())){				return true;			}		}		return false;	}	@Override	public int hashCode() {		return city_Name.hashCode() + city_Code;	}		public int getCity_Code() {		return city_Code;	}	public void setCity_Code(int city_Code) {		this.city_Code = city_Code;	}	public String getCity_Name() {		return city_Name;	}	public void setCity_Name(String city_Name) {		this.city_Name = city_Name;	}	}

 

IArea:

public interface IArea extends Serializable{        @Nonnull    public int getArea_Code();    @Nonnull    public String getArea_Name();}

 

Area:

@Entity@Table(name = "CITY_AREA")@SuppressWarnings("serial")public class Area implements IArea,Serializable{	@EmbeddedId	private AreaPK area_PK;		@ManyToOne	@JoinColumns({@JoinColumn(name = "city_Code"),@JoinColumn(name = "city_Name")})	private City city;		public AreaPK getArea_PK() {		return area_PK;	}	public void setArea_PK(AreaPK area_PK) {		this.area_PK = area_PK;	}	public City getCity() {		return city;	}	public void setCity(City city) {		this.city = city;	}	@Override	public int getArea_Code() {		return area_PK.getArea_Code();	}	@Override	public String getArea_Name() {		return area_PK.getArea_Name();	}	}

 

AreaPK: 

@Embeddable@SuppressWarnings("serial")public class AreaPK implements Serializable{	private int area_Code;		private String area_Name;		@Override	public boolean equals(Object obj) {		if(obj instanceof ProvincePK){			if(((AreaPK) obj).getArea_Code() == this.getArea_Code()					&& ((AreaPK) obj).getArea_Name().equals(this.getArea_Name())){				return true;			}		}		return false;	}		@Override	public int hashCode() {		return area_Name.hashCode() + area_Code;	}	public int getArea_Code() {		return area_Code;	}	public void setArea_Code(int area_Code) {		this.area_Code = area_Code;	}	public String getArea_Name() {		return area_Name;	}	public void setArea_Name(String area_Name) {		this.area_Name = area_Name;	}}

 

BroadLeaf 下定义ORM对象：Province，City，Area


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