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我正在处理一个JPA实体继承的项目org.springframework.data.jpa.domain.AbstractPersistable ,它看起来如下:Activiti JPA支持(activiti-spring-boot-starter-jpa)无法检测到通用主键类型
@MappedSuperclass
public abstract class AbstractPersistable<PK extends Serializable> implements Persistable<PK> {
@Id @GeneratedValue private PK id;
...
而且我们的领域类定义如下:
public class User extends AbstractPersistable<Long> {
...
}
所以,最终,我们所有的主键都长。然而,当我试图启动一个域对象的过程实例,我得到这个错误:
org.activiti.engine.ActivitiException: Error while evaluating expression: ${reviewer}
...
Caused by: org.activiti.engine.ActivitiIllegalArgumentException: Unsupported Primary key type for JPA-Entity: java.io.Serializable
at org.activiti.engine.impl.variable.JPAEntityMappings.createId(JPAEntityMappings.java:168)
at org.activiti.engine.impl.variable.JPAEntityMappings.getJPAEntity(JPAEntityMappings.java:120)
...
所以,看起来像Activiti的弹簧引导起动,JPA将无法正常工作时,域类从具有通用主键的基类继承,或者我失去了一些东西?