Hibernate field naming issue with Spring Boot (naming strategy)

Question

Note that this code does work with plain Spring but not with Spring Boot(v1.3.3), is there something i\'m missing because this is imported from a spring app that works. The

Answer 1

SINCE SPRING-BOOT 1.4

Starting from 1.4, because of the switch to Hibernate 5, the naming strategy has been updated to SpringPhysicalNamingStrategy which should be very close to 1.3 defaults.

See also:

• Spring's naming strategy

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PREVIOUS VERSION

Spring Boot provides the ImprovedNamingStrategy as default naming strategy, which makes Hibernate search for a team_id column (inferred from the int teamId field). As this column doesn't exist in your table, that's the cause of the error. From the Hibernate docs:

An improved naming strategy that prefers embedded underscores to mixed case names

You've got two options:

1. Provide the column name explicitly as @Column(name="teamId"). There used to be a bug with this in early Boot versions, not anymore.

2. Change the naming strategy in the Spring Boot properties and tell it to use the EJB3NamingStrategy, which doesn't convert camelCase to snake_case, but keeps it as it is.

Answer 2

This worked for me with spring boot 1.4.0 and hibernate entitymanager 4.3.8.Final

application.properties

spring.jpa.hibernate.naming.implicit-strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyJpaImpl spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

Answer 3

If you are using Spring Boot 2.0.2 and Hibernate 5.3.4 then setting the following property will fix the issue.

spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

Answer 4

application.properties

spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.DefaultComponentSafeNamingStrategy

the above properties work for me. hibernate 4.3.11.Final spring boot 1.4.2.RELEASE

Answer 5

Below strategy worked for me

spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.DefaultComponentSafeNamingStrategy

Answer 6

with the late version :

    spring-boot-starter-data-jpa: ➡ 1.5.2.RELEASE
    hibernate-core:5.0.12.Final

this class

PhysicalNamingStrategyStandardImpl

needs to be extended and added to hibernate properties.

Here is a full working version

    public class PhysicalNamingStrategyImpl extends PhysicalNamingStrategyStandardImpl implements Serializable {

    public static final PhysicalNamingStrategyImpl INSTANCE = new PhysicalNamingStrategyImpl();

    @Override
    public Identifier toPhysicalTableName(Identifier name, JdbcEnvironment context) {
        String nameModified;
        // Do whatever you want with the name modification
        return new Identifier(nameModified, name.isQuoted());
    }

}

    @Override
    public Identifier toPhysicalColumnName(Identifier name, JdbcEnvironment context) {
         String nameModified;
        // Do whatever you want with the name modification
        return new Identifier(nameModified, name.isQuoted());
    }

Linking it to hibernate should be done like this when configuring the datasource.

properties.put("hibernate.physical_naming_strategy", "my.Package.PhysicalNamingStrategyImpl");

here is a full working version of datasource config

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;


@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactory",
        basePackages = { "com.xxxxxx.repository" }
)
public class SharedDataSourceConfig {

    @Value("${startup.ddl-auto}")
    String hbm2ddl;

    @Primary
    @Bean(name = "dataSource")
    @ConfigurationProperties("spring.datasource.shared")
    public DataSource customerDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Primary
    @Bean(name = "entityManagerFactory")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(
            EntityManagerFactoryBuilder builder,
            @Qualifier("dataSource") DataSource dataSource) {
        Map<String, Object> properties = new HashMap<String, Object>();
        properties.put("hibernate.hbm2ddl.auto", hbm2ddl);
        properties.put("hibernate.physical_naming_strategy", "my.package.PhysicalNamingStrategyImpl");
        return builder
                .dataSource(dataSource)
                .packages(PackageScannerHelper.getPackagesToScan())
                .persistenceUnit("shared")
                .properties(properties)
                .build();
    }

    @Primary
    @Bean(name = "transactionManager")
    public PlatformTransactionManager transactionManager(
            @Qualifier("entityManagerFactory") EntityManagerFactory
                    entityManagerFactory
    ) {
        return new JpaTransactionManager(entityManagerFactory);
    }
}