Hibernate query return empty list after deployment.
Hi, guys, I have some problems setting up my endpoints in my project.I am using using wildfly 10.1.0.Final, hibernate ogm 5.0.10.Final and Cassandra 3.0.9.
I have 32 rows in a table named "IO_CONFIGURATION" in my cassandra database.
Here is the code for my DAO:
public interface DataAccessObject {
public EntityManager getManager();
public void setManager(EntityManager em);
public EntityManagerFactory getEntityManagerFactory();
public void setEntityManagerFactory(EntityManagerFactory emf);
}
public abstract class AbstractDAO implements DataAccessObject {
public <T> T get(Class<T> clazz, Object id) {
return getManager().find(clazz, id);
}
public <T> T update(T entity) {
return getManager().merge(entity);
}
public <T> T create(T entity) {
getManager().persist(entity);
return entity;
}
public <T> void delete(T entity) {
getManager().remove(entity);
}
@SuppressWarnings("unchecked")
protected <T> T executeQueryForSingleResult(Query query) {
try {
return (T) query.getSingleResult();
} catch (NoResultException e) {
return null;
}
}
}
@Singleton
@Startup
public class CassandraDAO<T extends Serializable> extends AbstractDAO {
private EntityManagerFactory emf;
// @PersistenceContext(unitName = "JPAService")
private EntityManager em;
@PostConstruct
public void init() {
System.out.println("***************** init CassandraDAO ***************************");
emf = Persistence.createEntityManagerFactory("JPAService");
em = emf.createEntityManager();
}
@PreDestroy
public void destroy() {
System.out.println("***************** destroying CassandraDAO *************************");
if (em.isOpen()) {
em.close();
}
if (emf.isOpen()) {
emf.close();
}
}
@Override
public EntityManager getManager() {
return em;
}
@Override
public void setManager(EntityManager em) {
this.em = em;
}
@Override
public EntityManagerFactory getEntityManagerFactory() {
return emf;
}
@Override
public void setEntityManagerFactory(EntityManagerFactory emf) {
this.emf = emf;
}
}
Here is the query that I am trying to run:
@SuppressWarnings("unchecked")
public List<IOConfiguration> findAllIOConfiguration() {
Query query = this.getManager().createQuery("from IOConfiguration");
return query.getResultList();
}
My query runs perfect as a standalone java application. Here is the code I wrote for test the query:
public class DatabaseConnectionTest {
@EJB
private static IOConfigurationDAO ioConfigurationDAO;
public static void main(String[] args) {
DatabaseConnectionTest dbTest = new DatabaseConnectionTest();
dbTest.test();
}
public void test() {
ioConfigurationDAO = new IOConfigurationDAO();
ioConfigurationDAO.init();
List<IOConfiguration> list = ioConfigurationDAO.findAllIOConfiguration();
System.out.println(list.size());
ioConfigurationDAO.destroy();
}
}
And after run this test, it will give me a result:
***************** init CassandraDAO ***************************
Mar 06, 2017 5:53:39 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
name: JPAService
...]
Mar 06, 2017 5:53:39 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.0.9.Final}
Mar 06, 2017 5:53:39 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Mar 06, 2017 5:53:39 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Mar 06, 2017 5:53:39 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
Mar 06, 2017 5:53:39 PM org.hibernate.ogm.datastore.impl.DatastoreProviderInitiator initiateService
INFO: OGM000016: NoSQL Datastore provider: org.hibernate.ogm.datastore.cassandra.impl.CassandraDatastoreProvider
Mar 06, 2017 5:53:39 PM org.hibernate.ogm.datastore.cassandra.impl.CassandraDatastoreProvider start
INFO: OGM001601: Connecting to Cassandra at 127.0.0.1:9042
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Mar 06, 2017 5:53:40 PM org.hibernate.ogm.dialect.impl.GridDialectInitiator$GridDialectInstantiator newInstance
INFO: OGM000017: Grid Dialect: org.hibernate.ogm.datastore.cassandra.CassandraDialect
Mar 06, 2017 5:53:40 PM org.hibernate.ogm.dialect.impl.GridDialectInitiator$GridDialectInstantiator newInstance
INFO: Grid dialect logs are disabled
Mar 06, 2017 5:53:40 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.ogm.dialect.impl.OgmDialect
Mar 06, 2017 5:53:40 PM org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl makeLobCreatorBuilder
INFO: HHH000422: Disabling contextual LOB creation as connection was null
Mar 06, 2017 5:53:40 PM org.hibernate.id.UUIDHexGenerator <init>
WARN: HHH000409: Using org.hibernate.id.UUIDHexGenerator which does not generate IETF RFC 4122 compliant UUID values; consider using org.hibernate.id.UUIDGenerator instead
Mar 06, 2017 5:53:40 PM org.hibernate.boot.internal.SessionFactoryBuilderImpl$SessionFactoryOptionsStateStandardImpl <init>
WARN: Unrecognized hbm2ddl_auto value : off. Supported values include create, create-drop, update, and validate. Ignoring
Mar 06, 2017 5:53:40 PM org.hibernate.search.engine.Version <clinit>
INFO: HSEARCH000034: Hibernate Search 5.5.3.Final
Mar 06, 2017 5:53:40 PM org.hibernate.ogm.cfg.impl.Version <clinit>
INFO: OGM000001: Hibernate OGM 5.0.4.Final
Mar 06, 2017 5:53:40 PM org.hibernate.search.engine.impl.ConfigContext getLuceneMatchVersion
WARN: HSEARCH000075: Configuration setting hibernate.search.lucene_version was not specified: using LUCENE_CURRENT.
32
***************** destroying CassandraDAO *************************
Mar 06, 2017 5:53:41 PM org.hibernate.ogm.datastore.cassandra.impl.CassandraDatastoreProvider stop
INFO: OGM001602: Closing connection to Cassandra
But when I try to do the same call on my endpoints after deploy my project, it will just give me an empty list.
Here is the code for the endpoints I set up:
@Path("/ioconfiguration")
public class IOConfigurationEndPoint {
@EJB
private static IOConfigurationDAO ioConfigurationDAO;
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getAllIoConfigurations() {
ioConfigurationDAO = new IOConfigurationDAO();
ioConfigurationDAO.init();
List<IOConfiguration> list = ioConfigurationDAO.findAllIOConfiguration();
System.out.println(list);
ioConfigurationDAO.destroy();
return Response.status(Response.Status.OK).entity(list).build();
}
}
But when I go to localhost:8080/aigateway/rest/ioconfiguration, it will give me an empty list.
Here is my persistence.xml for setting up the connection:
<?xml version="1.0"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0"> <!--persistence-unit name="ogm-jpa-tutorial" transaction-type="JTA"--> <persistence-unit name="JPAService"> <!-- Use the Hibernate OGM provider: configuration will be transparent --> <provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider> <!-- <jta-data-source>java:jboss/datasources/cassandraDS</jta-data-source> --> <class>com.sensorhound.aigateway.domain.Alert</class> <class>com.sensorhound.aigateway.domain.DataSeriesMeta</class> <class>com.sensorhound.aigateway.domain.IOConfiguration</class> <class>com.sensorhound.aigateway.domain.NodeData</class> <properties> <property name="hibernate.transaction.jta.platform" value="JBossAS" /> <property name="hibernate.hbm2ddl.auto" value="off"/> <property name="jboss.as.jpa.providerModule" value="org.hibernate:5.0" /> <property name="hibernate.ogm.datastore.provider" value="cassandra_experimental"/> <property name="hibernate.ogm.datastore.host" value="127.0.0.1:9042"/> <property name="hibernate.ogm.datastore.database" value="dev"/> </properties> </persistence-unit> </persistence>
I don't know what the problem is, someone please help me!