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我想将一些自定义功能添加到春季资料库。 使用这个作为我的出发点http://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.single-repository-behaviour我已经创建了下面的代码:春季资料库自定义方法
public interface TableLock<T> {
void checkout(T entity);
void checkin(T entity, boolean cmpltBatch);
}
public interface BatchTableLock extends TableLock<MyEntity> {
}
public class BatchTableLockImpl implements BatchTableLock {
private static final Logger logger = LoggerFactory.getLogger(BatchTableLockImpl.class);
@PersistenceContext(unitName = "mysql")
private EntityManager em;
@Override
public void checkout(MyEntity batch) {
Long id = batch.getMyEntityId();
try {
MyEntity p = em.find(MyEntity.class, id, LockModeType.PESSIMISTIC_WRITE);
if (p == null) {
logger.error("checkout : MyEntity id {} must be valid", id);
throw new PessimisticLockException();
}
if (myCondition is true) {
return;
}
} catch (LockTimeoutException | PessimisticLockException e) {
logger.error("checkout : Unable to get write lock on MyEntity id {}", id, e);
}
throw new PessimisticLockException();
}
@Override
public void checkin(MyEntity batch, boolean cmplt) {
Long id = batch.getMyEntityId();
try {
MyEntity p = em.find(MyEntity.class, id, LockModeType.PESSIMISTIC_WRITE);
if (p == null) {
logger.error("complete : MyEntity id {} must be valid", id);
return;
}
if (this is true) {
if (cmplt) {
yep;
} else {
nope;
}
} else if (cmplt) {
logger.error("complete: Unable to complete MyEntity {} with status.", id);
}
} catch (LockTimeoutException | PessimisticLockException e) {
logger.error("complete : Unable to get write lock on MyEntity id {}", id, e);
}
}
}
@Repository
public interface MyDao extends CrudRepository<MyEntity, BigInteger>, BatchTableLock {
... My queries ...
}
不幸的是我收到以下错误:
org.springframework.data.mapping.PropertyReferenceException: No property checkin found for type MyEntity!
此,如果我没有记错意味着弹簧试图根据方法'checkin'生成一个查询,并且它无法在名称'checkin'中找到MyEntity中的字段。这是正确的,没有这样的领域。我如何让它停止这样做?基于上面的链接,我不认为它应该试图为这个方法生成一个查询,但它似乎正在做它无论如何。我可能会错过一些东西,通常是这样,但我不明白它是什么。
谢谢奥利弗对于文档的混淆和误解感到抱歉。 – peekay