HHH-14004 Test for Cacheable Enhanced Proxies

This commit is contained in:
Sanne Grinovero 2020-05-06 16:28:20 +01:00
parent 09105b8dee
commit 947dda618e
4 changed files with 279 additions and 0 deletions

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@ -305,4 +305,9 @@ public class EnhancementAsProxyLazinessInterceptor extends AbstractLazyLoadInter
public Object getIdentifier() {
return entityKey.getIdentifier();
}
//Mostly useful for testing
public boolean isInitialized() {
return initialized;
}
}

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@ -0,0 +1,50 @@
/*
* 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.cache;
import javax.persistence.Cacheable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import org.hibernate.annotations.CacheConcurrencyStrategy;
@Entity
@Cacheable
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Continent {
private Long id;
private String code;
private String name;
@Id
@GeneratedValue
public Long getId() {
return id;
}
public void setId(final Long id) {
this.id = id;
}
public String getCode() {
return code;
}
public void setCode(final String code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(final String name) {
this.name = name;
}
}

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@ -0,0 +1,64 @@
/*
* 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.cache;
import javax.persistence.Cacheable;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
@Entity
@Cacheable
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Country {
private Long id;
private String code;
private String name;
private Continent continent;
@Id
@GeneratedValue
public Long getId() {
return id;
}
public void setId(final Long id) {
this.id = id;
}
public String getCode() {
return code;
}
public void setCode(final String code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(final String name) {
this.name = name;
}
@ManyToOne(fetch = FetchType.LAZY)
@Cache(usage = CacheConcurrencyStrategy.READ_ONLY)
public Continent getContinent() {
return continent;
}
public void setContinent(final Continent continent) {
this.continent = continent;
}
}

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@ -0,0 +1,160 @@
/*
* 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.cache;
import java.util.concurrent.atomic.AtomicLong;
import org.hibernate.bytecode.enhance.spi.interceptor.EnhancementAsProxyLazinessInterceptor;
import org.hibernate.bytecode.enhance.spi.interceptor.LazyAttributeLoadingInterceptor;
import org.hibernate.cache.spi.CacheImplementor;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.engine.spi.PersistentAttributeInterceptable;
import org.hibernate.stat.Statistics;
import org.hibernate.testing.TestForIssue;
import org.hibernate.testing.bytecode.enhancement.BytecodeEnhancerRunner;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
/**
* Tests to verify that even when dealing with Enhanced Proxies, we will still attempt
* to load them from 2LC in preference of loading from the DB.
*
* @author Sanne Grinovero
*/
@TestForIssue( jiraKey = "HHH-14004" )
@RunWith(BytecodeEnhancerRunner.class)
public class EnhancedProxyCacheTest extends BaseCoreFunctionalTestCase {
private static final AtomicLong countryId = new AtomicLong();
@Override
protected void configure(Configuration cfg) {
super.configure( cfg );
cfg.setProperty( AvailableSettings.ALLOW_ENHANCEMENT_AS_PROXY, "true" );
cfg.setProperty( Environment.GENERATE_STATISTICS, "true" );
cfg.setProperty( Environment.USE_SECOND_LEVEL_CACHE, "true" );
}
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class[] { Country.class, Continent.class };
}
@Test
public void testPreferenceFor2LCOverUninitializedProxy() throws Exception {
final Statistics stats = sessionFactory().getStatistics();
storeTestData();
clearAllCaches();
stats.clear();
assertTrue( stats.isStatisticsEnabled() );
assertEquals( 0, stats.getEntityFetchCount() );
assertEquals( 0, stats.getSecondLevelCacheHitCount() );
// First we load the Country once, then trigger initialization of the related Continent proxy.
// 2LC is empty, so stats should show that these objects are being loaded from the DB.
inSession( s -> {
Country nl = s.get( Country.class, countryId.get() );
assertNotNull( nl );
assertEquals( 0, stats.getSecondLevelCacheHitCount() );
assertEquals( 1, stats.getSecondLevelCacheMissCount() );
assertEquals( 1, stats.getEntityLoadCount() );
Continent continent = nl.getContinent();
//Check that this is indeed an enhanced proxy so to ensure we're testing in the right conditions.
//The following casts should not fail:
final PersistentAttributeInterceptable interceptable = (PersistentAttributeInterceptable) continent;
final EnhancementAsProxyLazinessInterceptor interceptor = (EnhancementAsProxyLazinessInterceptor) interceptable.$$_hibernate_getInterceptor();
assertFalse( interceptor.isInitialized() );
assertFalse( interceptor.isAttributeLoaded( "code" ) );
//Trigger initialization of the enhanced proxy:
assertEquals( "EU", continent.getCode() );
assertTrue( interceptor.isInitialized() );
assertEquals( 0, stats.getSecondLevelCacheHitCount() );
assertEquals( 2, stats.getEntityLoadCount() );
} );
stats.clear();
//Now load the same objects again; we expect to hit 2LC this time,
//and we should see no needs to hit the DB.
//Also, since all data is readily available we won't need to make
//all attributes lazy.
inSession( s -> {
assertEquals( 0, stats.getSecondLevelCacheHitCount() );
assertEquals( 0, stats.getSecondLevelCacheMissCount() );
assertEquals( 0, stats.getEntityLoadCount() );
Country nl = s.get( Country.class, countryId.get() );
assertNotNull( nl );
assertEquals( 1, stats.getSecondLevelCacheHitCount() );
assertEquals( 0, stats.getSecondLevelCacheMissCount() );
assertEquals( 0, stats.getEntityLoadCount() );
Continent continent = nl.getContinent();
final PersistentAttributeInterceptable interceptable = (PersistentAttributeInterceptable) continent;
final EnhancementAsProxyLazinessInterceptor interceptor = (EnhancementAsProxyLazinessInterceptor) interceptable.$$_hibernate_getInterceptor();
assertFalse( interceptor.isInitialized() );
assertFalse( interceptor.isAttributeLoaded( "code" ) );
assertEquals( 1, stats.getSecondLevelCacheHitCount() );
assertEquals( 0, stats.getSecondLevelCacheMissCount() );
assertEquals( 0, stats.getEntityLoadCount() );
//Trigger initialization of the enhanced proxy:
assertEquals( "EU", continent.getCode() );
assertTrue( interceptor.isInitialized() );
assertEquals( 2, stats.getSecondLevelCacheHitCount() );
assertEquals( 0, stats.getSecondLevelCacheMissCount() );
assertEquals( 0, stats.getEntityLoadCount() );
} );
}
private void clearAllCaches() {
final CacheImplementor cache = sessionFactory().getCache();
for (String name : cache.getCacheRegionNames() ) {
cache.getRegion( name ).clear();
}
}
private void storeTestData() {
inTransaction( s -> {
Continent continent = new Continent();
continent.setCode( "EU" );
continent.setName( "Europe" );
s.persist( continent );
Country c = new Country();
c.setCode( "NL" );
c.setName( "Nederland" );
c.setContinent( continent );
s.persist( c );
countryId.set( c.getId() );
} );
}
}