BAEL-1876: Hibernate 5 Naming Strategy Configuration (#5158)

This commit is contained in:
j-bennett 2018-10-05 10:00:45 -04:00 committed by maibin
parent 1a4fe225af
commit e92e71df1c
4 changed files with 188 additions and 0 deletions

View File

@ -0,0 +1,47 @@
package com.baeldung.hibernate.namingstrategy;
import org.hibernate.boot.model.naming.Identifier;
import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
public class CustomPhysicalNamingStrategy implements PhysicalNamingStrategy {
@Override
public Identifier toPhysicalCatalogName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
return convertToSnakeCase(identifier);
}
@Override
public Identifier toPhysicalColumnName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
return convertToSnakeCase(identifier);
}
@Override
public Identifier toPhysicalSchemaName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
return convertToSnakeCase(identifier);
}
@Override
public Identifier toPhysicalSequenceName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
return convertToSnakeCase(identifier);
}
@Override
public Identifier toPhysicalTableName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
return convertToSnakeCase(identifier);
}
private Identifier convertToSnakeCase(final Identifier identifier) {
if (identifier == null) {
return identifier;
}
final String regex = "([a-z])([A-Z])";
final String replacement = "$1_$2";
final String newName = identifier.getText()
.replaceAll(regex, replacement)
.toLowerCase();
return Identifier.toIdentifier(newName);
}
}

View File

@ -0,0 +1,56 @@
package com.baeldung.hibernate.namingstrategy;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "Customers")
public class Customer {
@Id
@GeneratedValue
private Long id;
private String firstName;
private String lastName;
@Column(name = "email")
private String emailAddress;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
}

View File

@ -0,0 +1,75 @@
package com.baeldung.hibernate.namingstrategy;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class NamingStrategyLiveTest {
private Session session;
@Before
public void init() {
try {
Configuration configuration = new Configuration();
Properties properties = new Properties();
properties.load(Thread.currentThread()
.getContextClassLoader()
.getResourceAsStream("hibernate-namingstrategy.properties"));
configuration.setProperties(properties);
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties())
.build();
MetadataSources metadataSources = new MetadataSources(serviceRegistry);
metadataSources.addAnnotatedClass(Customer.class);
SessionFactory factory = metadataSources.buildMetadata()
.buildSessionFactory();
session = factory.openSession();
} catch (HibernateException | IOException e) {
fail("Failed to initiate Hibernate Session [Exception:" + e.toString() + "]");
}
}
@After
public void close() {
if (session != null)
session.close();
}
@Test
public void testCustomPhysicalNamingStrategy() {
Customer customer = new Customer();
customer.setFirstName("first name");
customer.setLastName("last name");
customer.setEmailAddress("customer@example.com");
session.beginTransaction();
Long id = (Long) session.save(customer);
session.flush();
session.clear();
Object[] result = (Object[]) session.createNativeQuery("select c.first_name, c.last_name, c.email from customers c where c.id = :id")
.setParameter("id", id)
.getSingleResult();
}
}

View File

@ -0,0 +1,10 @@
hibernate.connection.driver_class=org.h2.Driver
hibernate.connection.url=jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1
hibernate.connection.username=sa
hibernate.dialect=org.hibernate.dialect.H2Dialect
hibernate.show_sql=true
hibernate.hbm2ddl.auto=create-drop
hibernate.physical_naming_strategy=com.baeldung.hibernate.namingstrategy.CustomPhysicalNamingStrategy
hibernate.implicit_naming_strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl