Hibernate的命名策略 [英] Hibernate naming strategy

问题描述

我基本上已经开始使用它了，但我坚持配置问题。
在@Configuration文件中实例化 LocalContainerEntityManagerFactoryBean 作为 @Bean 。

我设置了 hibernate.ejb.naming_strategy ，如下例 - >这似乎适用于创建表（如果它们不存在的话）像在我的@Entity类中那样是camelCase），但是执行查询时，hibernate会忘记这个命名配置，并尝试使用另一种具有under_score_attributes的命名策略 - >显然这些查询会失败。我还需要设置其他任何财产吗？

或者另一种配置属性的方式，最好不要添加 cfg.xml 或 persistence.xml ？

  LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean（）; 
属性props = new Properties（）; 
 props.put（hibernate.hbm2ddl.auto，create）; 
 props.put（hibernate.ejb.naming_strategy，org.hibernate.cfg.DefaultNamingStrategy）; 
 lef.setJpaProperties（道具）; 
 lef.afterPropertiesSet（）; 
  

解决方案

HibernateJpaAutoConfiguration 允许通过本地外部配置来设置命名策略（以及所有其他JPA属性）。例如，在 application.properties 中：

  spring.jpa.hibernate .ddl_auto：创建
 spring.jpa.hibernate.naming_strategy：org.hibernate.cfg.EJB3NamingStrategy 
  

I am building a REST webservice with Spring (Boot) and am trying to use hibernate as orm mapper without any xml configuration.

I basically got it to work, but I am stuck with a configuration issue. I instantiate LocalContainerEntityManagerFactoryBean as @Bean in a @Configuration file.

I set hibernate.ejb.naming_strategy as in the following example -> this seems to work for creating the tables if they do not exist (column names are camelCase like in my @Entity classes) but when a query is executed, hibernate "forgets" about this naming configuration and tries to use another kind of naming strategy with under_score_attributes --> obviously those queries fail. Is there any other property I need to set?

Or another way of configuring the properties preferably without adding a cfg.xml or persistence.xml?

LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();   
Properties props = new Properties();
props.put("hibernate.hbm2ddl.auto", "create");
props.put("hibernate.ejb.naming_strategy","org.hibernate.cfg.DefaultNamingStrategy");
lef.setJpaProperties(props); 
lef.afterPropertiesSet();

解决方案

HibernateJpaAutoConfiguration allows the naming strategy (and all other JPA properties) to be set via local external configuration. For example, in application.properties:

spring.jpa.hibernate.ddl_auto: create
spring.jpa.hibernate.naming_strategy: org.hibernate.cfg.EJB3NamingStrategy

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