JPA休眠驼峰式字段 [英] JPA Hibernate camelcase field
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问题描述
我有spring 4+休眠4.3 + psql 9.5应用程序,并且在驼峰式字段转换方面遇到了一些问题.
I have spring 4+ hibernate 4.3 + psql 9.5 application and faced some problems with camelcase field transalations.
Hibernate: select trainservi0_.trainServiceId as trainSer1_16_, trainservi0_.category as category2_16_, trainservi0_.date as date3_16_, trainservi0_.description as descript4_16_, trainservi0_.name as name5_16_, trainservi0_.status as status6_16_, trainservi0_.trainNumber as trainNum7_16_, trainservi0_.version as version8_16_ from tms.public.train_service trainservi0_
2016-02-29 13:09:34 WARN SqlExceptionHelper:144 - SQL Error: 0, SQLState: 42703
2016-02-29 13:09:34 ERROR SqlExceptionHelper:146 - ERROR: column trainservi0_.trainserviceid does not exist
Perhaps you meant to reference the column "trainservi0_.trainServiceId".
这是我的配置:
public class DataBaseProdConfig {
@Resource
private Environment env;
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(env.getRequiredProperty("db.entity.package"));
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
em.setJpaProperties(getHibernateProperties());
return em;
}
@Bean
public DataSource dataSource() {
BasicDataSource ds = new BasicDataSource();
ds.setUrl(env.getRequiredProperty("db.url"));
ds.setDriverClassName(env.getRequiredProperty("db.driver"));
ds.setUsername(env.getRequiredProperty("db.username"));
ds.setPassword(env.getRequiredProperty("db.password"));
ds.setInitialSize(Integer.valueOf(env.getRequiredProperty("db.initialSize")));
ds.setMinIdle(Integer.valueOf(env.getRequiredProperty("db.minIdle")));
ds.setMaxIdle(Integer.valueOf(env.getRequiredProperty("db.maxIdle")));
ds.setTimeBetweenEvictionRunsMillis(Long.valueOf(env.getRequiredProperty("db.timeBetweenEvictionRunsMillis")));
ds.setMinEvictableIdleTimeMillis(Long.valueOf(env.getRequiredProperty("db.minEvictableIdleTimeMillis")));
ds.setTestOnBorrow(Boolean.valueOf(env.getRequiredProperty("db.testOnBorrow")));
ds.setValidationQuery(env.getRequiredProperty("db.validationQuery"));
return ds;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager manager = new JpaTransactionManager();
manager.setEntityManagerFactory(entityManagerFactory().getObject());
return manager;
}
public Properties getHibernateProperties() {
try {
Properties properties = new Properties();
InputStream is = getClass().getClassLoader().getResourceAsStream("hibernate.properties");
properties.load(is);
return properties;
} catch (IOException e) {
throw new IllegalArgumentException("Can't find 'hibernate.properties' in classpath!", e);
}
}
这是我的实体:
@Entity
@Table(name = "train_service", schema = "public", catalog = "tms")
public class TrainServiceEntity {
private Long trainServiceId;
@Id
@SequenceGenerator(name="train_service_trainServiceId_seq",
sequenceName="train_service_trainServiceId_seq",
allocationSize=1)
@GeneratedValue(strategy = GenerationType.SEQUENCE,
generator="train_service_trainServiceId_seq")
@Column(name = "trainServiceId")
public Long getTrainServiceId() {
return trainServiceId;
}
public void setTrainServiceId(Long trainServiceId) {
this.trainServiceId = trainServiceId;
}
....
}
所以Hibernate将' trainServiceId '转换为' trainserviceid ',但是在日志中,我看到了正确的字段名称:
So Hibernate translates 'trainServiceId' to 'trainserviceid' , but in logs I see the right field name:
Hibernate: select trainservi0_.trainServiceId as trainSer1_16_, ...
我该怎么做,迫使Hibernate不要将字段名称转换为小写字母?
What I need to do , that force Hibernate dont translate field names to lowecase?
推荐答案
您可以尝试将混合大小写的列名称放在连字符中.
You can try to put the mixedcase columne names in hyphens.
@Column("\"trainServiceId\"")
请参见持久性表,搜索带有特殊字符和大小写混合的表"
see persistence tables ,search for 'Tables with special characters and mixed case'
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