/
JoinColumnOrFormulaTest.java
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/
JoinColumnOrFormulaTest.java
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.userguide.mapping.basic;
import java.io.Serializable;
import java.util.Objects;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.hibernate.annotations.JoinColumnOrFormula;
import org.hibernate.annotations.JoinFormula;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.junit.Test;
import org.jboss.logging.Logger;
import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
import static org.junit.Assert.assertEquals;
/**
* @author Vlad Mihalcea
*/
public class JoinColumnOrFormulaTest extends BaseEntityManagerFunctionalTestCase {
private static final Logger log = Logger.getLogger( JoinColumnOrFormulaTest.class );
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class<?>[] {
Country.class,
User.class
};
}
@Test
public void testLifecycle() {
//tag::mapping-JoinColumnOrFormula-persistence-example[]
Country US = new Country();
US.setId( 1 );
US.setDefault( true );
US.setPrimaryLanguage( "English" );
US.setName( "United States" );
Country Romania = new Country();
Romania.setId( 40 );
Romania.setDefault( true );
Romania.setName( "Romania" );
Romania.setPrimaryLanguage( "Romanian" );
doInJPA( this::entityManagerFactory, entityManager -> {
entityManager.persist( US );
entityManager.persist( Romania );
} );
doInJPA( this::entityManagerFactory, entityManager -> {
User user1 = new User( );
user1.setId( 1L );
user1.setFirstName( "John" );
user1.setLastName( "Doe" );
user1.setLanguage( "English" );
entityManager.persist( user1 );
User user2 = new User( );
user2.setId( 2L );
user2.setFirstName( "Vlad" );
user2.setLastName( "Mihalcea" );
user2.setLanguage( "Romanian" );
entityManager.persist( user2 );
} );
//end::mapping-JoinColumnOrFormula-persistence-example[]
//tag::mapping-JoinColumnOrFormula-fetching-example[]
doInJPA( this::entityManagerFactory, entityManager -> {
log.info( "Fetch User entities" );
User john = entityManager.find( User.class, 1L );
assertEquals( US, john.getCountry());
User vlad = entityManager.find( User.class, 2L );
assertEquals( Romania, vlad.getCountry());
} );
//end::mapping-JoinColumnOrFormula-fetching-example[]
}
//tag::mapping-JoinColumnOrFormula-example[]
@Entity(name = "User")
@Table(name = "users")
public static class User {
@Id
private Long id;
private String firstName;
private String lastName;
private String language;
@ManyToOne
@JoinColumnOrFormula( column =
@JoinColumn(
name = "language",
referencedColumnName = "primaryLanguage",
insertable = false,
updatable = false
)
)
@JoinColumnOrFormula( formula =
@JoinFormula(
value = "true",
referencedColumnName = "is_default"
)
)
private Country country;
//Getters and setters omitted for brevity
//end::mapping-JoinColumnOrFormula-example[]
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 getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
public Country getCountry() {
return country;
}
public void setCountry(Country country) {
this.country = country;
}
//tag::mapping-JoinColumnOrFormula-example[]
}
@Entity(name = "Country")
@Table(name = "countries")
public static class Country implements Serializable {
@Id
private Integer id;
private String name;
private String primaryLanguage;
@Column(name = "is_default")
private boolean _default;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPrimaryLanguage() {
return primaryLanguage;
}
public void setPrimaryLanguage(String primaryLanguage) {
this.primaryLanguage = primaryLanguage;
}
public boolean isDefault() {
return _default;
}
public void setDefault(boolean _default) {
this._default = _default;
}
@Override
public boolean equals(Object o) {
if ( this == o ) {
return true;
}
if ( !( o instanceof Country ) ) {
return false;
}
Country country = (Country) o;
return Objects.equals( getId(), country.getId() );
}
@Override
public int hashCode() {
return Objects.hash( getId() );
}
}
//end::mapping-JoinColumnOrFormula-example[]
}