I started out with this guide, to migrate our xml config to an annotation config.
The current problem is, that my test a persist seems to not actually write the data (= no transaction commit). This results in the next check to fail. The environment currently has five persistence units and according entityManagerFactories and transactionManagers.
MyTest.java
#RunWith(SpringRunner.class)
#ContextConfiguration(classes = {PersistenceJPAConfig.class}, loader = AnnotationConfigContextLoader.class)
public class MyTest {
#Autowired
private MyDao testable;
#Transactional(transactionManager = "tm1") // tried with name= and without
#Test
public void crudTest() throws Exception {
// assert that the table is empty
List<MyDO> all = testable.getAll();
assertTrue(all.isEmpty());
// write one entity
MyDO anEntity = new MyDO();
testable.persist(anEntity);
// load all entities and assert that the details match
List<MyDO> allAfterInsert = testable.getAll();
// THIS FAILS
assertFalse("The database result should not be empty.", allAfterInsert.isEmpty());
}
}
PersistenceJPAConfig.java
#Configuration
#EnableTransactionManagement
#ComponentScan("my.package")
public class PersistenceJPAConfig {
#PersistenceContext(unitName = "myPersistenceUnit") // also tried
#Bean(name = "myEntityManager")
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(new String[] {"my.package"});
em.setPersistenceUnitName("myPersistenceUnit");
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
return em;
}
// ... the same for the other persistenceUnits with increasing names
#Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.h2.Driver");
dataSource.setUrl("jdbc:h2:mem:test;DB_CLOSE_DELAY=-1");
dataSource.setUsername("sa");
dataSource.setPassword("");
return dataSource;
}
#Bean(name = "tm1")
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getNativeEntityManagerFactory());
transactionManager.setPersistenceUnitName("myPersistenceUnit");
transactionManager.afterPropertiesSet();
return transactionManager;
}
// ... the same for the other persistenceUnits with increasing names
#Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
#Bean
public PersistenceAnnotationBeanPostProcessor persistenceAnnotationBeanPostProcessor() {
return new PersistenceAnnotationBeanPostProcessor();
}
Properties additionalProperties() {
Properties properties = new Properties();
properties.setProperty("hibernate.hbm2ddl.auto", "update");
properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
return properties;
}
}
MyDao.java
public class MyDao {
#PersistenceContext(unitName = "myPersistenceUnit")
EntityManager em;
#Override
#Transactional(transactionManager = "tm1") // also tried with different variations like above
public Long persist(final MyDO entity) {
em.persist(entity); // tried to add an em.flush(), but that throws a TransactionRequiredException: no transaction is in progress
// handling transactions would throw IllegalStateException: Not allowed to create transaction on shared EntityManager - use Spring transactions or EJB CMT instead
return entity.getId();
}
}
The persistence units are located in the file META-INF/persistence.xml.
The tests worked with the xml configuration, but don't work with my current annotation config. Is there something I forgot? What more information could I provide?
I found a solution: Instead of entityManagerFactory().getNativeEntityManagerFactory() I used entityManagerFactory().getObject() and everything works as expected.
#Bean(name = "tm1")
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
transactionManager.setPersistenceUnitName("myPersistenceUnit");
transactionManager.afterPropertiesSet();
return transactionManager;
}
I am not sure why though.
Related
I having a configuration problem that cause the error below. I know there are a tons of similar problem but I read a lot of answer that stackoverflow suggest with my title but I don't find the right answer yet.
Description:
Field collaborateurJpaRepository in com...infrastructure.persistence.user.UserRepositoryImpl required a bean of type 'com...infrastructure.persistence.jurisdiction.CollaborateurJpaRepository' that could not be found.
Action:
Consider defining a bean of type 'com...infrastructure.persistence.jurisdiction.CollaborateurJpaRepository' in your configuration.
Before to give some details of the code, I think it could be nice that I describe you brievly the context.
I work on a client project which has 8 maven modules (DDD methods) because at the end of the year 4 modules will be separate in an other server.
Recently we create a second oracle database so I had to create multiple configuration to refer to the good dataSource.
I think the problem is due to bad datasource configuration that block the bean spring instanciation.
We are using spring boot version 1.5.7.release.
First Infrastructure configuration
#Configuration
#ComponentScan(basePackages = "com...jade")
#EnableTransactionManagement
#EnableJpaRepositories(entityManagerFactoryRef = "jadeEntityManager", transactionManagerRef = "jadeTransactionManager")
#EntityScan(basePackages = { "com...jade", "org.springframework.data.jpa.convert.threeten" })
#Profile({"ARA_JADE_CONF", "LOCAL_JADE_CONF"})
public class InfrastructureConfig {
private final static int JDBC_FETCH_SIZE = 1000;
#Autowired
private Environment environment;
#Bean
public LocalContainerEntityManagerFactoryBean jadeEntityManager() throws SQLException {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSourceJade());
em.setPackagesToScan(new String[] {"com...jade"});
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
return em;
}
#Bean
#Primary
public OracleDataSource dataSourceJade() throws SQLException {
OracleDataSource dataSource = new OracleDataSource();
dataSource.setUser(environment.getProperty("db.datasource.jade.username"));
dataSource.setPassword(environment.getProperty("db.datasource.jade.password"));
dataSource.setURL(environment.getProperty("db.datasource.jade.url"));
dataSource.setImplicitCachingEnabled(true);
dataSource.setFastConnectionFailoverEnabled(true);
return dataSource;
}
#Bean(name="jdbcTemplateJade")
public JdbcTemplate jdbcTemplateJade() throws SQLException {
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSourceJade());
jdbcTemplate.setResultsMapCaseInsensitive(true);
jdbcTemplate.setFetchSize(JDBC_FETCH_SIZE);
return jdbcTemplate;
}
#Bean
public PlatformTransactionManager transactionManager() throws SQLException{
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(jadeEntityManager().getObject());
return transactionManager;
}
#Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
} ...
Seconde Infrastructure configuration
#Configuration
#ComponentScan(basePackages = "com.bnpparibas.sit.risk.art")
#EnableTransactionManagement
#EnableJpaRepositories(entityManagerFactoryRef = "artEntityManager", transactionManagerRef = "artTransactionManager")
#EntityScan(basePackages = { "com...art", "org.springframework.data.jpa.convert.threeten" })
#Profile({"LOCAL_ART_CONF,'ARA_ART_CONF"})
public class ArtInfrastructureConfig {
private final static int JDBC_FETCH_SIZE = 1000;
#Autowired
private Environment environment;
#Bean
#Primary
public LocalContainerEntityManagerFactoryBean artEntityManager() throws SQLException {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSourceArt());
em.setPackagesToScan(new String[] {"com...art.infrastructure.persistence"});
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
return em;
}
#Bean
#Primary
public OracleDataSource dataSourceArt() throws SQLException {
OracleDataSource dataSource = new OracleDataSource();
dataSource.setUser(environment.getProperty("db.datasource.art.username"));
dataSource.setPassword(environment.getProperty("db.datasource.art.password"));
dataSource.setURL(environment.getProperty("db.datasource.art.url"));
dataSource.setImplicitCachingEnabled(true);
dataSource.setFastConnectionFailoverEnabled(true);
return dataSource;
}
#Bean
#Primary
public PlatformTransactionManager artTransactionManager()throws SQLException{
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(artEntityManager().getObject());
return transactionManager;
}
#Bean
#Primary
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}...
Interface link to Entity.
#DDD.Repository
#Repository
public interface CollaborateurJpaRepository extends CrudRepository<Collaborateur,String>{
#Query("FROM ART_PARAM.ART_USER u WHERE u.refogUID = :uid")
Collaborateur findCollaborateurById(#Param("uid") String uid);
}
Class that contain the autowired interface to retrieve some data of the second database.
#DDD.RepositoryImpl
#Repository
#Primary
public class UserRepositoryImpl implements UserRepository {
#Autowired
private CollaborateurJpaRepository collaborateurJpaRepository;
#Override
//#Cacheable(cacheNames = CacheConfig.CACHE_JURIDICTION, key = CacheConfig.CACHE_KEY_UTILISATEUR_ID)
#Transactional("entityManagerFactoryArt")
public User retrieveUser(UserId userId) {
if(userId.getValue() == null) {
return null;
} else {
Collaborateur collaborateur = collaborateurJpaRepository.findOne(userId.getValue());
return new User(collaborateur.getRefogUID(),collaborateur.getRefogFirstName(),collaborateur.getRefogLastName(),collaborateur.getProfile(),collaborateur.isActiveUser(),collaborateur.isBankingSecrecy());
}
}
I have a config class:
#SpringBootConfiguration
#ComponentScan(basePackages = "vap")
public class AppConfig {
Logger logger = LoggerFactory.getLogger(this.getClass());
public AppConfig() {
}
#Bean
public ServerRuntime runtime() {
ServerRuntime runtime = ServerRuntime.builder().addConfig("cayenne-project.xml").build();
return runtime;
}
#Bean
public ObjectContext getContext(#Autowired ServerRuntime serverRuntime) {
return serverRuntime.newContext();
}
#Bean(name = "pgDataSource")
public DataSource getDataSource() {
Properties props = new Properties();
props.setProperty("user", "postgres");
props.setProperty("password", "");
PoolConfiguration configuration = new PoolProperties();
configuration.setDbProperties(props);
configuration.setUrl("jdbc:postgresql://localhost/mikro00");
configuration.setDriverClassName("org.postgresql.Driver");
DataSource dataSource = new org.apache.tomcat.jdbc.pool.DataSource(configuration);
return dataSource;
}
#Bean(name = "hsqldbDataSource")
public DataSource getHSQLDataSource() {
Properties props = new Properties();
props.setProperty("user", "sa");
props.setProperty("password", "");
PoolConfiguration configuration = new PoolProperties();
configuration.setDbProperties(props);
configuration.setUrl("jdbc:h2:file:./outbase");
configuration.setDriverClassName("org.h2.Driver");
DataSource dataSource = new org.apache.tomcat.jdbc.pool.DataSource(configuration);
return dataSource;
}
}
my PGConfig.java
#Configuration
#EnableTransactionManagement
public class PGConfig {
#Primary
#Bean(name = "entityManagerFactoryPG")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder, #Qualifier(value = "pgDataSource") DataSource dataSource) {
LocalContainerEntityManagerFactoryBean vap = builder.dataSource(dataSource)
.packages("vap")
.build();
JpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
vap.setJpaVendorAdapter(jpaVendorAdapter);
return vap;
}
#Primary
#Bean(name = "transactionManagerPG")
public PlatformTransactionManager transactionManager(
#Qualifier("entityManagerFactory") EntityManagerFactory
entityManagerFactory
) {
return new JpaTransactionManager(entityManagerFactory);
}
}
My H2Config.java
#Configuration
#EnableTransactionManagement
public class H2Config {
#Primary
#Bean(name = "dataSource")
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource(){
return DataSourceBuilder.create().build();
}
#Primary
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder, #Qualifier(value = "hsqldbDataSource") DataSource dataSource){
LocalContainerEntityManagerFactoryBean vap = builder.dataSource(dataSource)
.packages("vap")
.build();
JpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
vap.setJpaVendorAdapter(jpaVendorAdapter);
return vap;
}
#Primary
#Bean(name = "transactionManagerH2")
public PlatformTransactionManager transactionManager(
#Qualifier("entityManagerFactory") EntityManagerFactory
entityManagerFactory
) {
return new JpaTransactionManager(entityManagerFactory);
}
}
KlientRepository
#Repository
public interface KlientRepository extends CrudRepository<Klient,Integer> {
}
How can I read Klient from one repository and write to another. I need to read from PG, work with data and save to h2. I can't find how two object of repository with different datasource, or simply create repository object with concrete datasource
You have pretty much everything out there in your code, you only need to do a bit of fine tuning thats all
Create two configuration classes with bean declaration for Datasource, EntityManagerFactory and TransactionManager
Mark one of the two as primary
Create two model classes(one for each database model)
Create two Repository classes in two different package**(very Important)**
In your service class Autowire both Repositories, read from one DB, manipulate and save to other.
Only thing missing in your code is you need to tell Spring which Repository class should use which EntityManager /Datasource(Since you have two). This can be done by Annotation #EnableJpaRepositories(basepackages=...). Use this annotation on each configuration classes, with basePackages indicating your repository classes
Maybe it is kind of too common but still.
I have a small test project where I'm testing all the JPA stuff. Almost everywhere I'm using Spring Data and JPA repositories work just fine. But now I'm trying to make my service to save entities. The service looks something like this:
#Service
public class SomeServiceImpl implements SomeService {
#Autowired
private EntityManagerFactory entityManagerFactory;
public SomeServiceImpl(EntityManagerFactory entityManagerFactory) {
this.entityManagerFactory = entityManagerFactory;
}
#Override
#Transactional
public SomeEntity save(SomeEntity someEntity) {
EntityManager entityManager = entityManagerFactory.createEntityManager();
entityManager.persist(someEntity);
return someEntity;
}
The persistence config looks like this (I'm intentionally copying and pasting the whole config. Maybe it would help you to reproduce the error):
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories
#PropertySource({"classpath:conf/application.properties"})
public class PersistenceConfig {
#Autowired
private Environment environment;
#Bean
public DataSource dataSource() throws SQLException {
PoolDataSourceImpl dataSource = new PoolDataSourceImpl();
dataSource.setConnectionFactoryClassName(environment.getRequiredProperty("db.driverClassName"));
dataSource.setURL(environment.getRequiredProperty("db.url"));
dataSource.setUser(environment.getRequiredProperty("db.username"));
dataSource.setPassword(environment.getRequiredProperty("db.password"));
dataSource.setFastConnectionFailoverEnabled(
Boolean.valueOf(environment.getRequiredProperty("db.fast.connect.failover.enabled")));
dataSource.setValidateConnectionOnBorrow(true);
dataSource.setSQLForValidateConnection("SELECT SYSDATE FROM DUAL");
dataSource.setONSConfiguration(environment.getRequiredProperty("db.ons.config"));
dataSource.setInitialPoolSize(Integer.valueOf(environment.getRequiredProperty("db.initial.pool.size")));
dataSource.setMinPoolSize(Integer.valueOf(environment.getRequiredProperty("db.min.pool.size")));
dataSource.setMaxPoolSize(Integer.valueOf(environment.getRequiredProperty("db.max.pool.size")));
dataSource.setAbandonedConnectionTimeout(0);
dataSource.setInactiveConnectionTimeout(60 * 25);
dataSource.setTimeToLiveConnectionTimeout(0);
dataSource.setMaxConnectionReuseTime(60 * 30L);
return dataSource;
}
private Properties hibernateProperties() {
Properties properties = new Properties();
properties.setProperty("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
properties.setProperty("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
properties.setProperty("hibernate.format_sql", environment.getRequiredProperty("hibernate.format_sql"));
properties.setProperty("hibernate.hbm2ddl.auto", environment.getRequiredProperty("hibernate.hbm2ddl.auto"));
return properties;
}
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(#Autowired DataSource dataSource) {
LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean();
entityManagerFactory.setDataSource(dataSource);
entityManagerFactory.setPackagesToScan("com.dropbinc.learning.jpa.model");
JpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
entityManagerFactory.setJpaVendorAdapter(jpaVendorAdapter);
Map jpaProperties = new HashMap();
jpaProperties.put("javax.persistence.schema-generation.database.action", "drop-and-create");
entityManagerFactory.setJpaPropertyMap(jpaProperties);
entityManagerFactory.setJpaProperties(hibernateProperties());
return entityManagerFactory;
}
#Bean
public PlatformTransactionManager transactionManager(#Autowired EntityManagerFactory entityManagerFactory) {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory);
return transactionManager;
}
#Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
}
And one more where I'm planning to configurate the rest of the application (placed in the same package):
#Configuration
#ComponentScan(basePackages = "com.dropbinc.learning.jpa")
public class AppConfig {
}
I've tried to debug Spring but all that I wasn't able to detect a difference between transaction behaviour of JPA repositories and my service. I saw transaction was created and even commited. But in case of JPA repositories it got saved while in my service implementation it did generated ids but an entity didn't appeared in a database.
I'm running all the stuff in tests, autowiring the service by interface:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(classes = { AppConfig.class, PersistenceConfig.class })
public class AllTheTests {
#Autowired
SomeService someService;
...
}
Thank you very much for any suggestion!
EDIT Adding entityManager.flush() call generates nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress.
I'm working with Spring and in it spring-data-jpa:1.7.0.RELEASE and hibernate-jpa-2.1-api:1.0.0.Final. My database is a MySQL. In a integration test, when I save an entity, the entityRepository.save() method does not return a update version of it (with the auto-incremented id populated for example), thus I can see it is in the database.
Here's my configuration class:
//#EnableTransactionManagement
#EnableJpaRepositories(basePackages = "core.repository")
#Configuration
#PropertySource("classpath:application.properties")
public class JPAConfiguration {
#Autowired
private Environment env;
private
#Value("${db.driverClassName}")
String driverClassName;
private
#Value("${db.url}")
String url;
private
#Value("${db.username}")
String user;
private
#Value("${db.password}")
String password;
#Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
#Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(driverClassName);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(true);
vendorAdapter.setDatabasePlatform(env.getProperty("hibernate.dialect"));
final LocalContainerEntityManagerFactoryBean em =
new LocalContainerEntityManagerFactoryBean();
em.setJpaVendorAdapter(vendorAdapter);
em.setPackagesToScan(new String[]{"core.persistence"});
em.setDataSource(dataSource());
em.afterPropertiesSet();
return em;
}
#Bean
public EntityManager entityManager(EntityManagerFactory entityManagerFactory) {
return entityManagerFactory.createEntityManager();
}
#Bean
public JpaTransactionManager transactionManager(final EntityManagerFactory emf) {
final JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
#Bean
public HibernateExceptionTranslator hibernateExceptionTranslator() {
return new HibernateExceptionTranslator();
}
}
Here's my test class:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(classes = {JPAConfiguration.class})
//#Transactional
//#TransactionConfiguration(defaultRollback = true)
public class AgencyRepositoryIntegrationTests {
#Autowired
AgencyRepository agencyRepository;
#Test
public void testThatAgencyIsSavedIntoRepoWorks() throws Exception {
Agency c = DomainTestData.getAgency();
Agency d = agencyRepository.save(c);
// here d equals to c but both have id 0.
Collection<Agency> results = Lists.newArrayList(agencyRepository.findAll());
//here results != null and it does contain the agency object.
assertNotNull(results);
}
}
I end up commenting the Transactional annotations (both in the test and in the configuration class) due to research other questions in stackoverflow, but it did not work.
Thanks
Try to uncomment your #Transactional annotation and run. I can't see any visible problem in your snippet but there is something inside me (and it's not hunger) saying that your transaction demarcation is not right. I had similar problems like this before and it was just #transaction annotations missing or transaction misconfiguration.
Use saveAndFlush method to make sure that the entity is in the database.
Make sure to add #Transactional to your methods if a NoTransactionException appears.
I'm working with two transactions on spring which has reference to two entitymanagers and hence two datasources, while using #Transactional("transaction1") it works fine but #Transactional("transaction2") throws out an error saying no active transactions found. following is the piece of code:
#Bean(name = "transaction1")
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactoryBean2()
.getObject());
return transactionManager;
}
#Bean(name = "transaction2")
public PlatformTransactionManager sermaTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager
.setEntityManagerFactory(entityManagerFactoryBean1()
.getObject());
return transactionManager;
}
respective entitymanagers:
#Bean(name = "entitymanager1")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean1() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource1());
entityManagerFactoryBean
.setPackagesToScan(new String[] { this.environment
.getProperty("db.packagesToScan") });
entityManagerFactoryBean
.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
entityManagerFactoryBean.setJpaVendorAdapter(vendorAdapter());
Map<String, Object> jpaProperties = new HashMap<String, Object>();
jpaProperties.put("eclipselink.weaving", "false");
jpaProperties.put("eclipselink.logging.level", "INFO");
jpaProperties.put("eclipselink.logging.parameters", "true");
entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);
return entityManagerFactoryBean;
}
#Bean(name = "entitymanager2")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean2() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource2());
entityManagerFactoryBean
.setPackagesToScan(new String[] { this.environment
.getProperty("db.packagesToScan") });
entityManagerFactoryBean
.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
entityManagerFactoryBean.setJpaVendorAdapter(vendorAdapter());
Map<String, Object> jpaProperties = new HashMap<String, Object>();
jpaProperties.put("eclipselink.weaving", "false");
jpaProperties.put("eclipselink.logging.parameters", "true");
jpaProperties.put("eclipselink.logging.level", "INFO");
entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);
return entityManagerFactoryBean;
}
respective datasources:
#Bean("datasource1")
public DriverManagerDataSource dataSource1() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource .setDriverClassName(this.environment.getProperty("db.driver"));
dataSource.setUrl(this.environment.getProperty("db.url"));
dataSource.setUsername(this.environment
.getProperty("db.username.abc"));
dataSource.setPassword(this.environment
.getProperty("db.password.abc"));
return dataSource;
}
#Bean("datasource2")
public DriverManagerDataSource dataSource2() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource
.setDriverClassName(this.environment.getProperty("db.driver"));
dataSource.setUrl(this.environment.getProperty("db.url"));
dataSource.setUsername(this.environment.getProperty("db.username"));
dataSource.setPassword(this.environment.getProperty("db.password"));
return dataSource;
}
My genericDaoImpl has the following to link respective entitymanagers:
#PersistenceContext(unitName = "entitymanager1")
private EntityManager em1;
#PersistenceContext(unitName = "entitymanager2")
private EntityManager em2;
when i do #Transactional("transaction1") it works fine, but when i do #Transactional("transaction2") it says no active transactions. and when i dont mention the qualifier for the transactions, error says two transactions found (transaction1, transaction2). any help would be great.
There is an issue with the config:
The problem is that when the beans are initialized like this:
transactionManager.setEntityManagerFactory(entityManagerFactoryBean2().getObject());
The call to entityManagerFactoryBean2() will create a new entity manager factory, and then the #Bean annotation will trigger the creation of another entity manager factory, with the same config.
When you inject the entity manager factory with #Autowiredin a bean, you are injecting the instance created with #Bean, and not the instance passed to the transaction manager.
One warning concerning the config:
The config above allows to do transactions in two separate datasources, but it's not possible with this config to do transactions that span the two databases. For example:
#Service
public class PlanesService {
#PersistenceContext(unitName = "entityManagerFactory1")
private EntityManager em1;
#PersistenceContext(unitName = "entityManagerFactory2")
private EntityManager em2;
#Transactional("transactionManager1")
public Plane savePlanes() {
F14 f14 = new F14("F14","f14");
F16 f16 = new F16("F16","f16");
em1.persist(f14);
em2.persist(f16);
return f14;
}
}
This code will only persist f14, because the only entity manager that has an ongoing transaction is em1 (due to #Transactional("transactionManager1")). The call to em2.persist() will be ignored (em2 can still do reads though).
If you want to do transactions that include both databases you need a JTA transaction manager.
An example of a working config:
This an example of a configuration that fixes the above injection issues:
#Configuration
public class DataSourcesConfig {
#Bean(name = "datasource1")
public DriverManagerDataSource dataSource1() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
...
return dataSource;
}
#Bean(name = "datasource2")
public DriverManagerDataSource dataSource2() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
...
return dataSource;
}
}
#Configuration
public class EntityManagerFactoriesConfiguration {
#Autowired
#Qualifier("datasource1")
private DataSource dataSource1;
#Autowired
#Qualifier("datasource2")
private DataSource dataSource2;
#Bean(name = "entityManagerFactory1")
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource1);
entityManagerFactoryBean.setPackagesToScan(new String[] { "your.package.here" });
entityManagerFactoryBean.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
Map<String, Object> jpaProperties = new HashMap<String, Object>();
...
entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);
return entityManagerFactoryBean;
}
#Bean(name = "entityManagerFactory2")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean2() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource2);
entityManagerFactoryBean.setPackagesToScan(new String[] { "your.package.here" });
entityManagerFactoryBean.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
Map<String, Object> jpaProperties = new HashMap<String, Object>();
entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);
...
return entityManagerFactoryBean;
}
}
#Configuration
#EnableTransactionManagement
public class TransactionManagersConfig {
#Autowired
#Qualifier("entityManagerFactory1")
EntityManagerFactory entityManagerFactory1;
#Autowired
#Qualifier("entityManagerFactory2")
EntityManagerFactory entityManagerFactory2;
#Autowired
#Qualifier("datasource1")
private DataSource dataSource1;
#Autowired
#Qualifier("datasource2")
private DataSource dataSource2;
#Bean(name = "transactionManager1")
public PlatformTransactionManager transactionManager1() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory1);
transactionManager.setDataSource(dataSource1);
return transactionManager;
}
#Bean(name = "transactionManager2")
public PlatformTransactionManager transactionManager2() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory2);
transactionManager.setDataSource(dataSource2);
return transactionManager;
}
}
By splitting the config in several #Configuration classes and autowiring them, we ensure that it's always the same beans being used (singletons).
Notice the #EnableTransactionManagement annotation, that enables #Transactional.