自动为@Embeddable类的列名添加前缀

问题描述

我正在开发一个项目，通过添加Hibernate注释来坚持一些POJO。我遇到的一个问题是，像这样的代码会失败，因为Hibernate试图将

尝试设置属性 hibernate.ejb.naming_strategy 至 org.hibernate.cfg.DefaultComponentSafeNamingStrategy

I am developing a project in which I am persisting some POJOs by adding Hibernate annotations. One problem I am running into is that code like this fails, as Hibernate tries to map the sub-fields within the Time_T onto the same column (i.e. startTime.sec and stopTime.sec both try to map to the colum sec, causing an error).

@Entity
public class ExampleClass
{
  @Id
  long eventId;

  Time_T startTime;
  Time_T stopTime;
}

@Embeddable
public class Time_T
{
  int sec;
  int nsec;
}

As there will be many occurrences like this throughout the system, it would be nice if there was an option to automatically append a prefix to the column name (e.g. make the columns be startTime_sec, startTime_nsec, stopTime_sec, stopTime_nsec), without having to apply overrides on a per-field basis. Does Hibernate have this capability, or is there any other reasonable work-around?

解决方案

Try setting the property hibernate.ejb.naming_strategy to org.hibernate.cfg.DefaultComponentSafeNamingStrategy

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