使用axon框架我有错误:
应用事件后,聚合标识符必须为非null。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:
julia> function f(x::Float64)
const x_const::Float64 = x;
x_const = "helle"; # this will break, as expected
end
第二次收到aggregateId的消息时代码失败,就像在此处理程序中一样:
@Bean
public JdbcEventStorageEngine jdbcEventStorageEngine() throws Exception{
return new JdbcEventStorageEngine(dataSource::getConnection, NoTransactionManager.INSTANCE);
}
但如果我使用它,它可以正常工作:
@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()));
}
我应该如何为postgres / mysql数据库配置eventStorageEngine?
答案 0 :(得分:1)
删除弹簧开发工具效果很好。