2

使用轴突框架我有错误:

应用事件后,聚合标识符必须为非空。确保在处理创建事件时最迟初始化聚合标识符。我使用这个 StorageEngine:

@Bean
public JdbcEventStorageEngine jdbcEventStorageEngine() throws Exception{
    return new JdbcEventStorageEngine(dataSource::getConnection, NoTransactionManager.INSTANCE);
}

当第二次收到aggregateId 的消息时,代码失败,就像在这个处理程序中一样:

@CommandHandler
public void handle(CreateProductCommand command) throws Exception {
    Aggregate<Product> productAggregate = null;
    try {
      productAggregate = repository.load(command.getId());
    } catch (AggregateNotFoundException exception) {
      logger.info("Aggregate with " + command.getId() + " is not found. Creating new one...");
      productAggregate = repository.newInstance(() -> new Product(command.getId()));
    }
    productAggregate.execute(product -> product.createProduct(command.getId()));
}

但如果我使用它,它工作正常:

@Bean
public EventStorageEngine eventStorageEngine() {
  return new InMemoryEventStorageEngine();
}

我应该如何为 postgres/mysql 数据库配置 eventStorageEngine?

4

1 回答 1

3

删除 spring devtools 效果很好。

于 2017-02-23T18:24:56.483 回答