使用HQL从我的Oracle DB中提取实体时遇到了一些麻烦。
以下是我DAO的代码
public ClientProject getClientProject(Client client, Product product) {
ClientProject clientProject = null;
Session session = factory.openSession();
String name = client.getClientName();
String id = "" + product.getProductId();
String hql= "from ClientProject as cp where cp.client.name = :name and cp.product.id = :id";
try {
session.beginTransaction();
Query query = session.createQuery(hql);
query.setParameter("name", "%"+name+"%");
query.setParameter("id", "%"+id+"%");
} finally {
session.close();
}
return clientProject;
}
以下是ClientProject的代码
@Entity
@Table (name="client_project")
@SequenceGenerator(name="seq_client_project",sequenceName="****.SEQ_CLIENT_PROJECT", allocationSize=1, initialValue=1)
public class ClientProject {
//Fields
@Id
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_client_project")
@Column(name="CLIENT_PROJECT_ID")
private int id;
@ManyToOne(fetch=FetchType.EAGER)
@JoinColumn(name="client_id")
private Client client;
@OneToOne(cascade=CascadeType.ALL)
@JoinColumn(name="product_id")
private Product product;
@OneToMany(mappedBy="clientProject")
private Set<Mod> clientProjectMod;
@Column(name="PROJECT_CODE")
private String projectCode;
以下是Client类的代码
@Entity
@Table (name="client")
@SequenceGenerator(name="seq_client",sequenceName="****.SEQ_CLIENT", allocationSize=1, initialValue=1)
public class Client {
//Fields
@Id
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_client")
@Column(name="CLIENT_ID")
private int id;
@Column(name="CLIENT_NAME")
private String clientName;
@Column(name="CLIENT_CODE")
private String clientCode;
@OneToMany(mappedBy="client")
private Set<ClientProject> clientProjects;
以下是我收到的错误消息..
WARNING: #{newBean.handleGenerateForm}: org.hibernate.QueryException: could not resolve property: name of: com.manh.entries.Client [from com.manh.entries.ClientProject as cp where cp.client.name = :name and cp.product.id = :id] javax.faces.FacesException: #{newBean.handleGenerateForm}: org.hibernate.QueryException: could not resolve property: name of: com.manh.entries.Client [from com.manh.entries.ClientProject as cp where cp.client.name = :name and cp.product.id = :id]
有什么想法吗?我猜我只是搞砸了部分HQL查询...
提前致谢!
答案 0 :(得分:1)
属性名称为clientName
而不是name
String hql= "from ClientProject as cp where cp.client.clientName = :name and cp.product.id = :id";