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/*
* Copyright 2008, Unitils.org
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.unitils.orm.jpa;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Properties;
import java.util.Set;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceUnit;
import javax.sql.DataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.orm.jpa.AbstractEntityManagerFactoryBean;
import org.springframework.orm.jpa.EntityManagerFactoryUtils;
import org.springframework.orm.jpa.EntityManagerHolder;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.unitils.core.TestListener;
import org.unitils.core.util.ConfigUtils;
import org.unitils.database.DataSourceWrapper;
import org.unitils.database.transaction.impl.UnitilsTransactionManagementConfiguration;
import org.unitils.orm.common.OrmModule;
import org.unitils.orm.common.util.OrmPersistenceUnitLoader;
import org.unitils.orm.jpa.annotation.JpaEntityManagerFactory;
import org.unitils.orm.jpa.util.JpaAnnotationConfigLoader;
import org.unitils.orm.jpa.util.JpaConfig;
import org.unitils.orm.jpa.util.JpaEntityManagerFactoryLoader;
import org.unitils.orm.jpa.util.JpaProviderSupport;
import org.unitils.util.AnnotationUtils;
import static org.unitils.util.AnnotationUtils.getFieldsAnnotatedWith;
import static org.unitils.util.AnnotationUtils.getMethodsAnnotatedWith;
import static org.unitils.util.PropertyUtils.getString;
import static org.unitils.util.ReflectionUtils.setFieldAndSetterValue;
/**
* Module providing support for unit tests for code that uses JPA. It offers an easy way of loading a
* EntityManagerFactory and having it injected into the test. The configured
* EntityManagerFactory will connect to the unitils configured test datasource, and
* join in unitils test-bound transactions.
*
* EntityManagerFactory instances are cached, to make sure that for any two tests that share the same
* configuration, the same instance of this object is used.
*
* An EntityManagerFactory is injected into all fields or methods of the test object
* annotated with {@link JpaEntityManagerFactory} or javax.persistence.PersistenceUnit. An
* EntityManager is injected into all fields or methods of the test annotated with
* javax.persistence.PersistenceContext.
* todo injection into other objects
*
* This module also offers a test to check whether the mapping of all entities is consistent with the structure of the
* database. It is highly recommended to write a unit test that invokes {@link JpaUnitils#assertMappingWithDatabaseConsistent()},
* This is a very useful test that verifies whether the mapping of all your objects entities still corresponds
* with the actual structure of the database. Currently, it's only available when the persistence provider is hibernate.
*
* @author Filip Neven
* @author Tim Ducheyne
*/
public class JpaModule
extends OrmModule {
/* Property key that defines the persistence provider */
public static final String PROPKEY_PERSISTENCE_PROVIDER = "jpa.persistenceProvider";
/* The logger instance for this class */
private static Logger logger = LoggerFactory.getLogger(JpaModule.class);
/**
* Implements provider specific operations
*/
protected JpaProviderSupport jpaProviderSupport;
/**
* Constructor for JpaModule.
*/
public JpaModule() {
super();
// Make sure recent version spring ORM module is in the classpath
AbstractEntityManagerFactoryBean.class.getName();
}
/**
* @param configuration
* The Unitils configuration, not null
*/
@Override
public void init(Properties configuration) {
super.init(configuration);
String persistenceProviderImplClassName = getString(PROPKEY_PERSISTENCE_PROVIDER, configuration);
jpaProviderSupport = ConfigUtils.getInstanceOf(JpaProviderSupport.class, configuration, persistenceProviderImplClassName);
}
@Override
public void afterInit() {
super.afterInit();
}
public void registerTransactionManagementConfiguration() {
// Make sure that a spring JpaTransactionManager is used for transaction management in the database module, if the
// current test object defines a JPA EntityManagerFactory
for (final DataSourceWrapper wrapper : wrappers) {
getDatabaseModule().registerTransactionManagementConfiguration(new UnitilsTransactionManagementConfiguration() {
@Override
public boolean isApplicableFor(Object testObject) {
return isPersistenceUnitConfiguredFor(testObject);
}
@Override
public PlatformTransactionManager getSpringPlatformTransactionManager(Object testObject) {
EntityManagerFactory entityManagerFactory = getPersistenceUnit(testObject);
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager(entityManagerFactory);
jpaTransactionManager.setDataSource(getDataSource());
jpaTransactionManager.setJpaDialect(jpaProviderSupport.getSpringJpaVendorAdaptor().getJpaDialect());
return jpaTransactionManager;
}
@Override
public boolean isTransactionalResourceAvailable(Object testObject) {
return wrapper.isDataSourceLoaded();
}
@Override
public Integer getPreference() {
return 10;
}
});
}
}
@Override
protected JpaAnnotationConfigLoader createOrmConfigLoader() {
return new JpaAnnotationConfigLoader();
}
@Override
protected Class getPersistenceUnitConfigAnnotationClass() {
return JpaEntityManagerFactory.class;
}
@Override
protected Class getPersistenceUnitClass() {
return EntityManagerFactory.class;
}
@Override
protected OrmPersistenceUnitLoader createOrmPersistenceUnitLoader() {
return new JpaEntityManagerFactoryLoader(databaseName);
}
@Override
protected String getOrmSpringSupportImplClassName() {
return "org.unitils.orm.jpa.util.spring.JpaSpringSupport";
}
@Override
protected EntityManager doGetPersistenceContext(Object testObject) {
return EntityManagerFactoryUtils.getTransactionalEntityManager(getPersistenceUnit(testObject));
}
@Override
protected EntityManager doGetActivePersistenceContext(Object testObject) {
EntityManagerHolder entityManagerHolder = (EntityManagerHolder) TransactionSynchronizationManager.getResource(getPersistenceUnit(testObject));
if (entityManagerHolder != null && entityManagerHolder.getEntityManager() != null && entityManagerHolder.getEntityManager().isOpen()) {
return entityManagerHolder.getEntityManager();
}
return null;
}
@Override
protected void flushOrmPersistenceContext(EntityManager activeEntityManager) {
logger.info("Flushing entity manager " + activeEntityManager);
activeEntityManager.flush();
}
/**
* Checks if the mapping of the managed objects with the database is still correct.
*
* @param testObject
* The test instance, not null
*/
public void assertMappingWithDatabaseConsistent(Object testObject) {
jpaProviderSupport.assertMappingWithDatabaseConsistent(getPersistenceUnit(testObject).createEntityManager(),
getConfiguredPersistenceUnit(testObject).getOrmConfigurationObject());
}
/**
* Injects the currently configured EntityManagerFactory and currently active
* EntityManager into fields or methods or the test object annotated with
* javax.persistence.PersistenceUnit or javax.persistence.PersistenceContext,
* respectively.
*
* @param testObject
* The test instance, not null
*/
public void injectJpaResourcesIntoTestObject(Object testObject) {
// If no EntityManagerFactory was configured in unitils, nothing can be injected
if (!isPersistenceUnitConfiguredFor(testObject)) {
return;
}
injectJpaResourcesInto(testObject, testObject);
}
/**
* Injects the EntityManagerFactory and currently active EntityManager into fields
* or methods of the given target object annotated with javax.persistence.PersistenceUnit or
* javax.persistence.PersistenceContext, respectively.
*
* @param testObject
* The test object, not null
* @param target
* The target object to inject the resources into, not null
*/
public void injectJpaResourcesInto(Object testObject, Object target) {
injectEntityManagerFactory(testObject, target);
injectEntityManager(testObject, target);
}
/**
* Injects the JPA EntityManagerFactory into all fields and methods that are
* annotated with javax.persistence.PersistenceUnit
*
* @param testObject
* The test object, not null
*/
public void injectEntityManagerFactory(Object testObject, Object target) {
Set fields = getFieldsAnnotatedWith(target.getClass(), PersistenceUnit.class);
Set methods = getMethodsAnnotatedWith(target.getClass(), PersistenceUnit.class);
if (fields.isEmpty() && methods.isEmpty()) {
// Jump out to make sure that we don't try to instantiate the EntityManagerFactory
return;
}
EntityManagerFactory entityManagerFactory = getPersistenceUnit(testObject);
setFieldAndSetterValue(target, fields, methods, entityManagerFactory);
}
/**
* Injects the currently active JPA EntityManager into all fields and methods that are
* annotated with javax.persistence.PersistenceContext
*
* @param testObject
* The test object, not null
*/
public void injectEntityManager(Object testObject, Object target) {
Set fields = getFieldsAnnotatedWith(target.getClass(), PersistenceContext.class);
Set methods = getMethodsAnnotatedWith(target.getClass(), PersistenceContext.class);
if (fields.isEmpty() && methods.isEmpty()) {
// Jump out to make sure that we don't try to instantiate the EntityManagerFactory
return;
}
EntityManager entityManager = getPersistenceContext(testObject);
setFieldAndSetterValue(target, fields, methods, entityManager);
}
protected DataSource getDataSource() {
return getDatabaseModule().getWrapper(databaseName).getDataSourceAndActivateTransactionIfNeeded();
}
public JpaProviderSupport getJpaProviderSupport() {
return jpaProviderSupport;
}
/**
* @return The TestListener associated with this module
*/
@Override
public TestListener getTestListener() {
return new JpaTestListener();
}
/**
* The {@link TestListener} for this module
*/
protected class JpaTestListener
extends OrmTestListener {
@Override
public void beforeTestSetUp(Object testObject, Method testMethod) {
getDatabaseName(testObject, testMethod);
registerTransactionManagementConfiguration();
injectJpaResourcesIntoTestObject(testObject);
}
}
/**
* @see org.unitils.orm.common.OrmModule#getDatabaseName(java.lang.Object, java.lang.reflect.Method)
*/
@Override
protected void getDatabaseName(Object testObject, Method testMethod) {
JpaEntityManagerFactory dataSource = AnnotationUtils.getMethodOrClassLevelAnnotation(JpaEntityManagerFactory.class, testMethod, testObject.getClass());
if (dataSource != null) {
wrappers.add(getDatabaseModule().getWrapper(dataSource.databaseName()));
}
Set lstDataSources = AnnotationUtils.getFieldLevelAnnotations(testObject.getClass(), JpaEntityManagerFactory.class);
if (!lstDataSources.isEmpty()) {
for (JpaEntityManagerFactory testDataSource : lstDataSources) {
wrappers.add(getDatabaseModule().getWrapper(testDataSource.databaseName()));
}
}
}
}