I use grails 2.0.1, and uninstall-plugin hibernate, install-plugin mongodb.
Now there is no bean named transactionManager, and there is a mongoTransactionManager.
So my question is how can I define the transactionManager in my resources.groovy?
Thanks a lot.
The documentation states that some form of transaction support is available, by using the following in your Service classes.
static transactional = 'mongo'
See Here: Grails data mapping/mongo docs and GPMONGODB-9
Otherwise, if (like me) you're using a plugin which requires transactional support (JAX-RS in my case) you can do the following.
class BootStrap {
def grailsApplication
def init = { servletContext ->
grailsApplication.mainContext.registerAlias('mongoTransactionManager',
'transactionManager')
}
}
Related
I want to run Hibernate in OSGi. I have added the standard Hibernate OSGi bundle and a Blueprint implementation, so that Envers gets registered right on startup.
Even without any kind of documentation I found out you have to start Envers, because... I doubt there is a logical reason, it does not work otherwise.
However now, even though Envers was registered in Blueprint, I get the following exception:
org.hibernate.service.UnknownServiceException: Unknown service requested [org.hibernate.envers.boot.internal.EnversService]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:184)
at org.hibernate.envers.boot.internal.TypeContributorImpl.contribute(TypeContributorImpl.java:22)
at org.hibernate.boot.internal.MetadataBuilderImpl.applyTypes(MetadataBuilderImpl.java:280)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.populate(EntityManagerFactoryBuilderImpl.java:798)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:187)
at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:34)
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilder(HibernatePersistenceProvider.java:165)
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:114)
at org.hibernate.osgi.OsgiPersistenceProvider.createEntityManagerFactory(OsgiPersistenceProvider.java:78)
at org.acme.project.Main.startSession(PersistenceUnitJpaProvider.java:38)
The stack trace starts at PersistenceProvider#createEntityManagerFactory in the following snippet:
public class Main {
private EntityManagerFactory entityManagerFactory;
public void startSession(Map<String, Object> config) {
BundleContext context = FrameworkUtil.getBundle(getClass()).getBundleContext();
ServiceReference<PersistenceProvider> serviceReference = context.getServiceReference(PersistenceProvider.class);
PersistenceProvider persistenceProvider = context.getService(serviceReference);
this.entityManagerFactory = persistenceProvider.createEntityManagerFactory("persistenceUnit", config);
context.ungetService(serviceReference);
}
I found this bug, and maybe this issue is fixed in the current version of Hibernate. But since the bundle IDs are broken, I have to use 5.1.
So Envers is registered, but not really. What could be the reason for such a strange error message?
I am trying to migrate an application from EJB3 + JTA + JPA (EclipseLink). Currently, this application makes use of application managed persistent context due to an unknown number of databases on design time.
The application managed persistent context allows us to control how to create EntityManager (e.g. supply different datasources JNDI to create proper EntityManager for specific DB on runtime).
E.g.
Map properties = new HashMap();
properties.put(PersistenceUnitProperties.TRANSACTION_TYPE, "JTA");
//the datasource JNDI is by configuration and without prior knowledge about the number of databases
//currently, DB JNDI are stored in a externalized file
//the datasource is setup by operation team
properties.put(PersistenceUnitProperties.JTA_DATASOURCE, "datasource-jndi");
properties.put(PersistenceUnitProperties.CACHE_SHARED_DEFAULT, "false");
properties.put(PersistenceUnitProperties.SESSION_NAME, "xxx");
//create the proper EntityManager for connect to database decided on runtime
EntityManager em = Persistence.createEntityManagerFactory("PU1", properties).createEntityManager();
//query or update DB
em.persist(entity);
em.createQuery(...).executeUpdate();
When deployed in a EJB container (e.g. WebLogic), with proper TransactionAttribute (e.g. TransactionAttributeType.REQUIRED), the container will take care of the transaction start/end/rollback.
Now, I am trying to migrate this application to Spring Boot.
The problem I encounter is that there is no transaction started even after I annotate the method with #Transactional(propagation = Propagation.REQUIRED).
The Spring application is packed as an executable JAR file and run with embadded Tomcat.
When I try to execute those update APIs, e.g. EntityManager.persist(..), EclipseLink always complains about:
javax.persistence.TransactionRequiredException: 'No transaction is currently active'
Sample code below:
//for data persistence
#Service
class DynamicServiceImpl implements DynamicService {
//attempt to start a transaction
#Transactional(propagation = Propagation.REQUIRED)
public void saveData(DbJndi, EntityA){
//this return false that no transaction started
TransactionSynchronizationManager.isActualTransactionActive();
//create an EntityManager based on the input DbJndi to dynamically
//determine which DB to save the data
EntityManager em = createEm(DbJndi);
//save the data
em.persist(EntityA);
}
}
//restful service
#RestController
class RestController{
#Autowired
DynamicService service;
#RequestMapping( value = "/saveRecord", method = RequestMethod.POST)
public #ResponseBody String saveRecord(){
//save data
service.saveData(...)
}
}
//startup application
#SpringBootApplication
class TestApp {
public static void main(String[] args) {
SpringApplication.run(TestApp.class, args);
}
}
persistence.xml
-------------------------------------------
<persistence-unit name="PU1" transaction-type="JTA">
<properties>
<!-- comment for spring to handle transaction??? -->
<!--property name="eclipselink.target-server" value="WebLogic_10"/ -->
</properties>
</persistence-unit>
-------------------------------------------
application.properties (just 3 lines of config)
-------------------------------------------
spring.jta.enabled=true
spring.jta.log-dir=spring-test # Transaction logs directory.
spring.jta.transaction-manager-id=spring-test
-------------------------------------------
My usage pattern does not follow most typical use cases (e.g. with known number of DBs - Spring + JPA + multiple persistence units: Injecting EntityManager).
Can anybody give me advice on how to solve this issue?
Is there anybody who has ever hit this situation that the DBs are not known in design time?
Thank you.
I finally got it work with:
Enable tomcat JNDI and create the datasource JNDI to each DS programmatically
Add transaction stuff
com.atomikos:transactions-eclipselink:3.9.3 (my project uses eclipselink instead of hibernate)
org.springframework.boot:spring-boot-starter-jta-atomikos
org.springframework:spring-tx
You have pretty much answered the question yourself: "When deployed in a EJB container (e.g. WebLogic), with proper TransactionAttribute (e.g. TransactionAttributeType.REQUIRED), the container will take care of the transaction start/end/rollback".
WebLogic is compliant with the Java Enterprise Edition specification which is probably why it worked before, but now you are using Tomcat (in embedded mode) which are NOT.
So you simply cannot do what you are trying to do.
This statement in your persistence.xml file:
<persistence-unit name="PU1" transaction-type="JTA">
requires an Enterprise Server (WebLogic, Glassfish, JBoss etc.)
With Tomcat you can only do this:
<persistence-unit name="PU1" transaction-type="RESOURCE_LOCAL">
And you need to handle transactions by your self:
myEntityManager.getTransaction.begin();
... //Do your transaction stuff
myEntityManager.getTransaction().commit();
For a variety of reasons, I ended up using spring boot 1.2.0 RC2.
So a spring data mongo application that worked fine in spring boot1.1.8 is now having issues. No code was changed except for the bump to spring boot 1.2.0 RC2. This is due to the snapshot version of spring cloud moving to this spring boot version.
The repository class is as follows
#Repository
public interface OAuth2AccessTokenRepository extends MongoRepository<OAuth2AuthenticationAccessToken, String> {
public OAuth2AuthenticationAccessToken findByTokenId(String tokenId);
public OAuth2AuthenticationAccessToken findByRefreshToken(String refreshToken);
public OAuth2AuthenticationAccessToken findByAuthenticationId(String authenticationId);
public List<OAuth2AuthenticationAccessToken> findByClientIdAndUserName(String clientId, String userName);
public List<OAuth2AuthenticationAccessToken> findByClientId(String clientId);
}
This worked quite well before the bump in versions and now I see this in the log.
19:04:35.510 [main] DEBUG o.s.c.a.ClassPathBeanDefinitionScanner - Ignored because not a concrete top-level class: file [/Users/larrymitchell/rpilprojects/corerpilservicescomponents/channelMap/target/classes/com/cisco/services/rpil/mongo/repository/oauth2/OAuth2AccessTokenRepository.class]
I do have another mongo repository that is recognized but it was defined as a class implementation
#Component
public class ChannelMapRepository { ... }
This one is recognized (I defined it as a implementation class as a workaround for another problem I had). This class is recognized and seems to work fine.
19:04:35.513 [main] DEBUG o.s.c.a.ClassPathBeanDefinitionScanner - Identified candidate component class: file [/Users/larrymitchell/rpilprojects/corerpilservicescomponents/channelMap/target/classes/com/cisco/services/rpil/services/Microservice.class]
Anyone have an idea why? I looked up the various reasons for why component scanning would not work and nothing lends itself to my issue.
Try removing the #Repository annotation? Worked for me. This was an issue in Github as well.
Although there already are quite some StackOverflow questions, blog entries, etc. on the web, I still cannot figure out a solution to the problem stated below.
Similar to this question (Injecting EJB within JAX-RS resource on JBoss7) I'd like to inject a EJB instance into a JAX-RS class. I tried with JBoss 5, JBoss 7, and WildFly 8. I either get no injection at all (field is null), or the server does not deploy (as soon as I try to combine all sorts of annotations).
Adding #Stateless to the JAX-RS makes the application server know both classes as beans. However, no injection takes place.
Is there a way to inject EJBs into a REST application? What kind of information (in addition to that contained in the question linked to above) could I provide to help?
EDIT: I created a Github project showing code that works (with Glassfish 4.0) and does not work (with JBoss 5).
https://github.com/C-Otto/beantest
Commit 4bf2f3d23f49d106a435f068ed9b30701bbedc9d works using Glassfish
4.0.
Commit 50d137674e55e1ceb512fe0029b9555ff7c2ec21 uses Jersey 1.8, which does not work.
Commit 86004b7fb6263d66bda7dd302f2d2a714ff3b939
uses Jersey 2.6, which also does not work.
EDIT2:
Running the Code which I tried on JBoss 5 on Glassfish 4.0 gives:
Exception while loading the app : CDI deployment failure:WELD-001408 Unsatisfied dependencies for type [Ref<ContainerRequest>] with qualifiers [#Default] at injection point [[BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] #Inject org.glassfish.jersey.server.internal.routing.UriRoutingContext(Ref<ContainerRequest>, ProcessingProviders)]
org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [Ref<ContainerRequest>] with qualifiers [#Default] at injection point [[BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] #Inject org.glassfish.jersey.server.internal.routing.UriRoutingContext(Ref<ContainerRequest>, ProcessingProviders)]
at org.jboss.weld.bootstrap.Validator.validateInjectionPointForDeploymentProblems(Validator.java:403)
EDIT3: The crucial information might be that I'd like a solution that works on JBoss 5
If you don't want to make your JAX-RS resource an EJB too (#Stateless) and then use #EJB or #Resource to inject it, you can always go with JNDI lookup (I tend to write a "ServiceLocator" class that gets a service via its class.
A nice resource to read about the topic:
https://docs.jboss.org/author/display/AS71/Remote+EJB+invocations+via+JNDI+-+EJB+client+API+or+remote-naming+project
A sample code:
try {
// 1. Retreive the Home Interface using a JNDI Lookup
// Retrieve the initial context for JNDI. // No properties needed when local
Context context = new InitialContext();
// Retrieve the home interface using a JNDI lookup using
// the java:comp/env bean environment variable // specified in web.xml
helloHome = (HelloLocalHome) context.lookup("java:comp/env/ejb/HelloBean");
//2. Narrow the returned object to be an HelloHome object. // Since the client is local, cast it to the correct object type.
//3. Create the local Hello bean instance, return the reference
hello = (HelloLocal)helloHome.create();
} catch(NamingException e) {
} catch(CreateException e) {
}
This is not "injecting" per-se, but you don't use "new" as-well, and you let the application server give you an instance which is managed.
I hope this was useful and I'm not telling you something you already know!
EDIT:
This is an excellent example: https://docs.jboss.org/author/display/AS72/EJB+invocations+from+a+remote+client+using+JNDI
EDIT 2:
As you stated in your comment, you'd like to inject it via annotations.
If the JNDI lookup is currently working for you without problems, and
If you're using Java EE 6+ (which I'm guessing you are), you can do the following:
#EJB(lookup = "jndi-lookup-string-here")
private RemoteInterface bean;
I am trying to make my first Java Enterprise Application and use UserTransactions.
Therefore I use JNDI Lookup with java:comp/UserTransaction to get my UserTransaction Object.
public void myMethod(MyEntity e) throws ApplicationException {
try {
this.ut = getUserTransaction();
this.ut.begin();
this.myStatefulBean.myBusinessMethod(e);
} catch ...
When I start my Transaction with .begin() and try to invoke any method in my stateful Bean (which works properly before starting a UserTransaction) I get an EJBTransactionRolledbackException which leads me to the following error:
java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction
The Bean I am using is annotated with #DataSourceDefinition having className = "org.apache.derby.jdbc.ClientXADataSource" thus there is imo no non-XA Resource.
What am I doing wrong?
I am using openjpa 2.2.1, Java EE Version 6
Solved the problem by myself. I used in my DataSourceDefinition name = "java:global/jdbc/testDB" as name, but in my persistence.xml the DataSource name was defined as <jta-data-source>testDB</jta-data-source>
This seems to work in CMTs but not in a UserTransaction. Correcting the entry in persistence.xml to <jta-data-source>java:global/jdbc/testDB</jta-data-source> fixed the problem.