我在三个实体类catalogB
,tableA
和tableAB
之间定义了多对一关系。 tableAB
具有tableA.tableAId
和catalogB.catalogBId
的主键组合,我使用以下代码:
@Entity
@Table(name = "tableAB", schema = Constantes.SCHEMA_SOLICITUD,uniqueConstraints = {@UniqueConstraint(columnNames = { "tableAId ", "catalogBId" }) })
public class TableAB implements Serializable {
private static final long serialVersionUID = 6360131240770014903L;
@Id
@ManyToOne(optional = false)
@JoinColumn(name = "tableAId", referencedColumnName = "tableAId")
private TableAId tableAId;
@Id
@ManyToOne(optional = false)
@JoinColumn(name = "catalogBId", referencedColumnName = "catalogBId")
private CatalogBId catalogBId;
这给了我一个错误:
Caused by: java.lang.IllegalArgumentException: This class [schema.TableAB ] does not define an IdClass
最佳答案
请参阅this question。接受的答案以及其他答案为您要实现的目标提供了启示。