/*
* 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.test.schemaupdate.foreignkeys;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.util.EnumSet;
import java.util.List;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.boot.spi.MetadataImplementor;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.hibernate.tool.schema.TargetType;
import org.hibernate.testing.TestForIssue;
import org.hibernate.testing.junit4.BaseUnitTestCase;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
/**
* @author Andrea Boriero
*/
public class ForeignKeyGenerationTest extends BaseUnitTestCase {
private File output;
private StandardServiceRegistry ssr;
private MetadataImplementor metadata;
@Before
public void setUp() throws IOException {
output = File.createTempFile( "update_script", ".sql" );
output.deleteOnExit();
ssr = new StandardServiceRegistryBuilder().build();
}
@After
public void tearsDown() {
StandardServiceRegistryBuilder.destroy( ssr );
}
@Test
@TestForIssue(jiraKey = "HHH-9591")
public void oneToOneTest() throws Exception {
createSchema( new Class[] {User.class, UserSetting.class, Group.class} );
/*
The generated SQL for the foreign keys should be:
alter table USERS add constraint FK_TO_USER_SETTING foreign key (USER_SETTING_ID) references USER_SETTING
alter table USER_SETTING add constraint FK_TO_USER foreign key (USERS_ID) references USERS
*/
checkAlterTableStatement( new AlterTableStatement(
ssr,
"USERS",
"FK_TO_USER_SETTING",
"USER_SETTING_ID",
"USER_SETTING"
) );
checkAlterTableStatement( new AlterTableStatement(
ssr,
"USER_SETTING",
"FK_TO_USER",
"USER_ID",
"USERS"
) );
}
@Test
@TestForIssue(jiraKey = "HHH-10396")
public void oneToManyTest() throws Exception {
createSchema( new Class[] {User.class, UserSetting.class, Group.class} );
/*
The generated SQL for the foreign keys should be:
alter table GROUP add constraint FK_USER_GROUP foreign key (USER_ID) references USERS
*/
checkAlterTableStatement( new AlterTableStatement(
ssr,
"GROUP",
"FK_USER_GROUP",
"USER_ID",
"USERS"
) );
}
@Test
@TestForIssue(jiraKey = "HHH-10385")
public void oneToManyWithJoinTableTest() throws Exception {
createSchema( new Class[] {Person.class, Phone.class} );
/*
The generated SQL for the foreign keys should be:
alter table PERSON_PHONE add constraint PERSON_ID_FK foreign key (PERSON_ID) references PERSON
alter table PERSON_PHONE add constraint PHONE_ID_FK foreign key (PHONE_ID) references PHONE
*/
checkAlterTableStatement( new AlterTableStatement(
ssr,
"PERSON_PHONE",
"PERSON_ID_FK",
"PERSON_ID",
"PERSON"
) );
checkAlterTableStatement( new AlterTableStatement(
ssr,
"PERSON_PHONE",
"PHONE_ID_FK",
"PHONE_ID",
"PHONE"
) );
}
@Test
@TestForIssue(jiraKey = "HHH-10386")
public void manyToManyTest() throws Exception {
createSchema( new Class[] {Project.class, Employee.class} );
/*
The generated SQL for the foreign keys should be:
alter table EMPLOYEE_PROJECT add constraint FK_EMPLOYEE foreign key (EMPLOYEE_ID) references EMPLOYEE
alter table EMPLOYEE_PROJECT add constraint FK_PROJECT foreign key (PROJECT_ID) references PROJECT
*/
checkAlterTableStatement( new AlterTableStatement(
ssr,
"EMPLOYEE_PROJECT",
"FK_EMPLOYEE",
"EMPLOYEE_ID",
"EMPLOYEE"
) );
checkAlterTableStatement( new AlterTableStatement(
ssr,
"EMPLOYEE_PROJECT",
"FK_PROJECT",
"PROJECT_ID",
"PROJECT"
) );
}
private void createSchema(Class[] annotatedClasses) {
final MetadataSources metadataSources = new MetadataSources( ssr );
for ( Class c : annotatedClasses ) {
metadataSources.addAnnotatedClass( c );
}
metadata = (MetadataImplementor) metadataSources.buildMetadata();
metadata.validate();
new SchemaExport()
.setHaltOnError( true )
.setOutputFile( output.getAbsolutePath() )
.setFormat( false )
.create( EnumSet.of( TargetType.SCRIPT ), metadata );
}
private void checkAlterTableStatement(AlterTableStatement alterTableStatement)
throws Exception {
final String expectedAlterTableStatement = alterTableStatement.toSQL();
final List<String> sqlLines = Files.readAllLines( output.toPath(), Charset.defaultCharset() );
boolean found = false;
for ( String line : sqlLines ) {
if ( line.contains( expectedAlterTableStatement ) ) {
return;
}
}
assertThat( "Expected alter table statement not found : " + expectedAlterTableStatement, found, is( true ) );
}
private static class AlterTableStatement {
final StandardServiceRegistry ssr;
final String tableName;
final String fkConstraintName;
final String fkColumnName;
final String referenceTableName;
public AlterTableStatement(
StandardServiceRegistry ssr,
String tableName,
String fkConstraintName,
String fkColumnName,
String referenceTableName) {
this.ssr = ssr;
this.tableName = tableName;
this.fkConstraintName = fkConstraintName;
this.fkColumnName = fkColumnName;
this.referenceTableName = referenceTableName;
}
public String toSQL() {
return ssr.getService( JdbcEnvironment.class ).getDialect().getAlterTableString( tableName ) + " add constraint " + fkConstraintName + " foreign key (" + fkColumnName + ") references " + referenceTableName;
}
}
}