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kotlin - 乐观锁定：不支持的版本类型长

问题描述

我正在尝试将乐观锁定与 Micronaut Data 和 Kotlin 一起使用，但不幸的是它因异常而失败：

14:33:32.113 [default-nioEventLoopGroup-1-2] ERROR i.m.h.s.netty.RoutingInBoundHandler - Unexpected error occurred: An error occurred invoking pre-persist event listeners: Unsupported @Version type: long
io.micronaut.data.event.PersistenceEventException: An error occurred invoking pre-persist event listeners: Unsupported @Version type: long
    at io.micronaut.data.runtime.event.EntityEventRegistry.prePersist(EntityEventRegistry.java:92)
    at io.micronaut.data.hibernate.event.EventIntegrator.lambda$integrate$9d2e46a6$1(EventIntegrator.java:77)
    at org.hibernate.action.internal.EntityInsertAction.preInsert(EntityInsertAction.java:227)
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:100)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
    at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478)
    at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475)
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348)
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102)
    at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362)
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453)
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212)
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380)
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281)
...

我的设置看起来像这样（应该很像文档）：

import javax.persistence.Column
import javax.persistence.Entity
import javax.persistence.EnumType
import javax.persistence.Enumerated
import javax.persistence.GeneratedValue
import javax.persistence.Id
import javax.persistence.Table
import javax.persistence.Version

@Entity
@Table(name = "invoice_queue")
data class InvoiceQueueEntity(
    @Id
    @GeneratedValue
    var id: Long = 0,

    ...(things left out for privacy reasons)...

    @Version
    var version: Long = 0L,
)

创建表的迁移是：

create table invoice_queue
(
    id      int8         not null,
    primary key (id)
);

create sequence hibernate_sequence start 1 increment 1;

alter table if exists invoice_queue
    add column version int8 not null default 0;

我错过了什么吗？

标签： kotlinmicronautmicronaut-data

解决方案

如果您确定您正在使用javax.persistence.Version而不是io.micronaut.core.version.annotation.Version，那么问题可能是 java 字段具有原始类型。

如果你让它可以为空，你应该得到装箱的类型。尝试：

var version: Long? = 0L

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