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我有三個表：Hibernate如何一次查詢三個表？
1. org,
2. product_info
3. service_info.
而且，表product_info是映射表service_infoManyToMany，
手段，許多products映射許多services。
雖然表org是映射表product_info OneToMany，
裝置，一個具有orgmany products。
當我初始化我網
我想查看org表的column。怎麼做 ？ 在類下是三個表的持久類。
ProductService類： '
@Entity
@Table(name="product_service")
@Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class ProductService implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private String id;
private ServiceInfo serviceInfo;//this is the service table
private String parammapping;
private ProductInfo productInfo;//this is the product table
// Constructors
/** default constructor */
public ProductService() {
}
/** minimal constructor */
public ProductService(String id) {
this.id = id;
}
// Property accessors
@Id
@Column(name="ID", unique=true, nullable=false, length=50)
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="SERVICEID")
public ServiceInfo getServiceInfo() {
return this.serviceInfo;
}
public void setServiceInfo(ServiceInfo serviceInfo) {
this.serviceInfo = serviceInfo;
}
@Column(name="PARAMMAPPING", length=1000)
public String getParammapping() {
return parammapping;
}
public void setParammapping(String parammapping) {
this.parammapping = parammapping;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="PRODUCTID")
public ProductInfo getProductInfo() {
return this.productInfo;
}
public void setProductInfo(ProductInfo productInfo) {
this.productInfo = productInfo;
}
}`
baseOrg類：
@Entity
@Table(name="base_org")
@Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class BaseOrg implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private String id;
private String code;
private String name;
private List<BaseRuleEngineLog> serviceUsedLogs = new ArrayList<BaseRuleEngineLog>(0);
private List<ProductInfo> productInfos = new ArrayList<ProductInfo>(0);
private List<BaseCreditQuery> baseCreditQueries = new ArrayList<BaseCreditQuery>(0);
// Constructors
/** default constructor */
public BaseOrg() {
}
/** minimal constructor */
public BaseOrg(String id) {
this.id = id;
}
@Id
@Column(name="ID", unique=true, nullable=false, length=50)
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
@Column(name="CODE", length=50)
public String getCode() {
return this.code;
}
public void setCode(String code) {
this.code = code;
}
@Column(name="NAME", length=200)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="baseOrg")
public List<BaseRuleEngineLog> getServiceUsedLogs() {
return this.serviceUsedLogs;
}
public void setServiceUsedLogs(List<BaseRuleEngineLog> serviceUsedLogs) {
this.serviceUsedLogs = serviceUsedLogs;
}
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="baseOrg")
public List<ProductInfo> getProductInfos() {
return this.productInfos;
}
public void setProductInfos(List<ProductInfo> productInfos) {
this.productInfos = productInfos;
}
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="baseOrg")
public List<BaseCreditQuery> getBaseCreditQueries() {
return this.baseCreditQueries;
}
public void setBaseCreditQueries(List<BaseCreditQuery> baseCreditQueries) {
this.baseCreditQueries = baseCreditQueries;
}
}
productInfo類：
@Entity
@Table(name="product_info")
@Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class ProductInfo implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private String id;
private BaseOrg baseOrg;//baseOrg table
private String code;
private String name;
private String orgcode;
private List<ProductService> productServices = new ArrayList<ProductService>(0);
// Constructors
/** default constructor */
public ProductInfo() {
}
/** minimal constructor */
public ProductInfo(String id) {
this.id = id;
}
// Property accessors
@Id
@Column(name="ID", unique=true, nullable=false, length=50)
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="ORGID")
public BaseOrg getBaseOrg() {
return this.baseOrg;
}
public void setBaseOrg(BaseOrg baseOrg) {
this.baseOrg = baseOrg;
}
@Column(name="CODE", length=100)
public String getCode() {
return this.code;
}
public void setCode(String code) {
this.code = code;
}
@Column(name="NAME", length=100)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
@Column(name="ORGCODE", length=100)
public String getOrgcode() {
return this.orgcode;
}
public void setOrgcode(String orgcode) {
this.orgcode = orgcode;
}
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="productInfo")
public List<ProductService> getProductServices() {
return this.productServices;
}
public void setProductServices(List<ProductService> productServices) {
this.productServices = productServices;
}
}
serviceInfo類
@Entity
@Table(name="service_info")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class ServiceInfo implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private String id;
private String name;
private String code;
private List<ProductService> productServices = new ArrayList<ProductService>(0);
// Constructors
/** default constructor */
public ServiceInfo() {
}
/** minimal constructor */
public ServiceInfo(String id) {
this.id = id;
}
// Property accessors
@Id
@Column(name="ID", unique=true, nullable=false, length=50)
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
@Column(name="NAME", length=100)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
@Column(name="CODE", length=100)
public String getCode() {
return this.code;
}
public void setCode(String code) {
this.code = code;
}
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="serviceInfo")
public List<ProductService> getProductServices() {
return this.productServices;
}
public void setProductServices(List<ProductService> productServices) {
this.productServices = productServices;
}
謝謝你原諒我的英語不好，這是我第一次的問題在堆棧溢出。
請添加你的持久化類。 –
Hibernate不查詢表，它查詢實體。 – Tobb
如果可能的話發佈你的實體類... –