HHH-11957 : DB2 substring method needs to be exposed in DB297Dialect
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Gail Badner
parent
1e25a1a99b
commit
385a18b11b
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/*
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* Hibernate, Relational Persistence for Idiomatic Java
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*
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* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
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* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
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*/
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package org.hibernate.test.hql;
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import javax.persistence.Entity;
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import javax.persistence.GeneratedValue;
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import javax.persistence.Id;
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import javax.persistence.PersistenceException;
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import org.hibernate.cfg.Configuration;
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import org.hibernate.cfg.Environment;
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import org.hibernate.dialect.DB297Dialect;
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import org.hibernate.exception.SQLGrammarException;
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import org.hibernate.resource.jdbc.spi.StatementInspector;
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import org.hibernate.testing.RequiresDialect;
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import org.hibernate.testing.TestForIssue;
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import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import static org.hibernate.testing.transaction.TransactionUtil.doInHibernate;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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import static org.junit.Assert.fail;
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/**
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* DB2 has 2 functions for getting a substring: "substr" and "substring"
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*
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* @author Gail Badner
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*/
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@RequiresDialect(DB297Dialect.class)
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public class DB297SubStringFunctionsTest extends BaseCoreFunctionalTestCase {
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private static final MostRecentStatementInspector mostRecentStatementInspector = new MostRecentStatementInspector();
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@Override
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protected Class<?>[] getAnnotatedClasses() {
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return new Class[] {
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AnEntity.class
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};
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}
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@Override
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protected void configure(Configuration configuration) {
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super.configure( configuration );
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configuration.getProperties().put( Environment.STATEMENT_INSPECTOR, mostRecentStatementInspector );
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}
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@Before
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public void setup() {
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AnEntity anEntity = new AnEntity();
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anEntity.description = "A very long, boring description.";
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doInHibernate(
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this::sessionFactory, session -> {
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session.persist( anEntity );
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}
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);
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}
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@After
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public void cleanup() {
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doInHibernate(
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this::sessionFactory, session -> {
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session.createQuery( "delete from AnEntity" ).executeUpdate();
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}
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);
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}
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@Test
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@TestForIssue( jiraKey = "HHH-11957")
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public void testSubstringWithStringUnits() {
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mostRecentStatementInspector.clear();
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doInHibernate(
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this::sessionFactory, session -> {
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String value = session.createQuery(
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"select substring( e.description, 21, 11, octets ) from AnEntity e",
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String.class
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).uniqueResult();
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assertEquals( "description", value );
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}
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);
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "substring(" ) );
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "octets" ) );
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}
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@Test
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@TestForIssue( jiraKey = "HHH-11957")
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public void testSubstringWithoutStringUnits() {
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mostRecentStatementInspector.clear();
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doInHibernate(
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this::sessionFactory, session -> {
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String value = session.createQuery(
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"select substring( e.description, 21, 11 ) from AnEntity e",
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String.class
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).uniqueResult();
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assertEquals( "description", value );
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}
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);
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "substr(" ) );
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}
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@Test
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@TestForIssue( jiraKey = "HHH-11957")
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public void testSubstrWithStringUnits() {
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mostRecentStatementInspector.clear();
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try {
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doInHibernate(
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this::sessionFactory, session -> {
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String value = session.createQuery(
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"select substr( e.description, 21, 11, octets ) from AnEntity e",
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String.class
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).uniqueResult();
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assertEquals( "description", value );
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}
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);
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fail( "Should have failed because substr cannot be used with string units." );
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}
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catch (PersistenceException expected) {
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assertTrue( SQLGrammarException.class.isInstance( expected.getCause() ) );
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}
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "substr(" ) );
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "octets" ) );
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}
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@Test
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@TestForIssue( jiraKey = "HHH-11957")
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public void testSubstrWithoutStringUnits() {
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mostRecentStatementInspector.clear();
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doInHibernate(
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this::sessionFactory, session -> {
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String value = session.createQuery(
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"select substr( e.description, 21, 11 ) from AnEntity e",
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String.class
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).uniqueResult();
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assertEquals( "description", value );
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}
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);
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assertTrue( mostRecentStatementInspector.mostRecentSql.contains( "substr(" ) );
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}
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@Entity(name="AnEntity")
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public static class AnEntity {
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@Id
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@GeneratedValue
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private long id;
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private String description;
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}
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private static class MostRecentStatementInspector implements StatementInspector {
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private String mostRecentSql;
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public String inspect(String sql) {
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mostRecentSql = sql;
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return sql;
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}
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private void clear() {
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mostRecentSql = null;
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}
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}
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}
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