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java.sql.SQLException: Connection is closed using HikariCP [ JPA + Hibernate + Guice]

I am frequently getting this exception :
javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:147)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:155)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1423)
at org.hibernate.query.Query.getResultList(Query.java:146)
at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:72)
at com.inmobi.programmatics.myservice.dao.impl.AbstractDAOImpl.getByIds(AbstractDAOImpl.java:117)
Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:182)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:148)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1940)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1909)
Caused by: java.sql.SQLException: Connection is closed
at com.zaxxer.hikari.pool.ProxyConnection$ClosedConnection$1.invoke(ProxyConnection.java:469)
at com.sun.proxy.$Proxy66.prepareStatement(Unknown Source)
at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:310)
at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:146)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172)
Here is my configuration for using HikariCP with JPA Hibernate :
JpaPersistModule jpaPersistModule = new JpaPersistModule("persistenceConfig");
final Map<String, Object> properties = new HashMap<>();
properties.put("hibernate.hikari.dataSource.url",
"jdbc:postgresql://" + configurationData.getDBHost() + ":" + configurationData.getDBPort()
+ "/" + configurationData.getDBName() + "?stringtype=unspecified");
properties.put("hibernate.hikari.dataSource.user", configurationData.getDBUser());
properties.put("hibernate.hikari.dataSource.password", configurationData.getDBPassword());
properties.put("hibernate.hikari.minimumIdle", "2");
properties.put("hibernate.hikari.maximumPoolSize", "8");
properties.put("hibernate.hikari.connectionTimeout", "30000");
properties.put("hibernate.hikari.idleTimeout", "60000");
properties.put("hibernate.hikari.poolName", "master_pool");
properties.put("hibernate.hikari.leakDetectionThreshold", "60000");
properties.put("hibernate.hikari.maxLifetime", "600000");
properties.put("hibernate.hikari.connectionTestQuery", "select 1");
properties.put("hibernate.hikari.connectionInitSql", "select 1");
Here is my peristence.xml for JPA:
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="persistenceConfig" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL94Dialect"/>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.jdbc.time_zone" value="UTC"/>
<property name="hibernate.jdbc.batch_size" value="25"/>
<property name="hibernate.connection.provider_class" value="org.hibernate.hikaricp.internal.HikariCPConnectionProvider"/>
<property name="hibernate.hikari.dataSourceClassName" value="org.postgresql.ds.PGSimpleDataSource"/>
</properties>
</persistence-unit>
</persistence>
I have checked idle_in_transaction_session_timeout in postgres db is 1 hour. It means there is no issue from db side.
I have tried to adjust hikaricp configuration. But it is not helping.
Initially I thought it maybe because of leak connection for which I added leakDetectionThreshold to 60 sec.
Then again I thought it maybe because of getting invalid connection from pool for which I have set connectionTestQuery. But it's also not helping.
I have checked there is maximum 1 or 2 connection are active at any time. So it can't be maxpool size issue.
I have looked into this stackoverflow question. It is not making any sense for my problem statement as I am using entitymanager with Guice Transactional.So I don't need to care about connection closing which will take care by Guice Transactional.
Can anyone help with it ?

Can't bind Hibernate session factory into java:app in WildFly 8.2.1

I am attempting to register a Hibernate Session Factory from a persistence unit in a applications deployed to WildFly 8.2.1 and I am encountering a warning exception from the Hibernate 4 code (listed below). And when I look at JNDI in the WildFly console, the session factories are definitely not registered. I would like them to be in the "java:app" scope so that I can avoid naming collisions when more that one application might have the same session factory name.
Registering an entity manager to this scope works fine.
If I leave the "java:app" prefix off the session factory name it bind just fine into JNDI, but at a global scope. I understand that I can impose some sort of name-spacing, but I was hoping I would not have to.
Any input would be appreciated. Thank you.
Details below...
The persistence unit
<persistence-unit name="myPU" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>java:/jdbc/MyDS</jta-data-source>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<mapping-file>MySchema.hbm.xml</mapping-file>
<properties>
<property name="jboss.entity.manager.jndi.name" value="java:app/em/MY_EM" />
<property name="hibernate.session_factory_name" value="java:app/sessions/my_FACTORY"/>
<property name="hibernate.query.imports" value="com.my.model" />
<property name="hibernate.current_session_context_class" value="thread" />
<property name="hibernate.use_outer_join" value="true" />
<property name="hibernate.jdbc.use_streams_for_binary" value="true" />
<property name="hibernate.dialect" value="org.hibernate.dialect.OracleDialect" />
</properties>
</persistence-unit>
Exception snippet
16:14:50,044 WARN [org.hibernate.internal.SessionFactoryRegistry] (ServerService Thread Pool -- 64) - HHH000277: Could not bind factory to JNDI: org.hibernate.engine.jndi.JndiException: Error creating intermediate context [java:app]
Caused by: javax.naming.NameNotFoundException: java:app
Full Warning exception from Hibernate
16:14:50,044 WARN [org.hibernate.internal.SessionFactoryRegistry] (ServerService Thread Pool -- 64) - HHH000277: Could not bind factory to JNDI: org.hibernate.engine.jndi.JndiException: Error creating intermediate context [java:app]
at org.hibernate.engine.jndi.internal.JndiServiceImpl.bind(JndiServiceImpl.java:205) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.engine.jndi.internal.JndiServiceImpl.bind(JndiServiceImpl.java:159) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.internal.SessionFactoryRegistry.addSessionFactory(SessionFactoryRegistry.java:103) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.internal.SessionFactoryImpl.(SessionFactoryImpl.java:497) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:852) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:845) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:398) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:844) [hibernate-entitymanager-4.3.7.Final.jar:4.3.7.Final]
at org.jboss.as.jpa.hibernate4.TwoPhaseBootstrapImpl.build(TwoPhaseBootstrapImpl.java:44) [jipijapa-hibernate4-3-1.0.1.Final.jar:]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:154) [wildfly-jpa-8.2.1.Final.jar:8.2.1.Final]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:117) [wildfly-jpa-8.2.1.Final.jar:8.2.1.Final]
at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_51]
at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:474) [wildfly-security-manager-1.0.0.Final.jar:1.0.0.Final]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:182) [wildfly-jpa-8.2.1.Final.jar:8.2.1.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_51]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_51]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_51]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: javax.naming.NameNotFoundException: java:app
at org.jboss.as.naming.InitialContext$DefaultInitialContext.findContext(InitialContext.java:187) [wildfly-naming-8.2.1.Final.jar:8.2.1.Final]
at org.jboss.as.naming.InitialContext$DefaultInitialContext.createSubcontext(InitialContext.java:294) [wildfly-naming-8.2.1.Final.jar:8.2.1.Final]
at org.jboss.as.naming.NamingContext.createSubcontext(NamingContext.java:398) [wildfly-naming-8.2.1.Final.jar:8.2.1.Final]
at javax.naming.InitialContext.createSubcontext(InitialContext.java:489) [rt.jar:1.8.0_51]
at javax.naming.InitialContext.createSubcontext(InitialContext.java:489) [rt.jar:1.8.0_51]
at org.hibernate.engine.jndi.internal.JndiServiceImpl.bind(JndiServiceImpl.java:202) [hibernate-core-4.3.7.Final.jar:4.3.7.Final]
... 18 more

I may have found the answer...
Although it is not exactly the answer I wanted. But, it makes sense. The reason that Hibernate's JNDI binding robots cannot find the java:app subcontext is because, I think, it is attempting to find that name at the root and it does not exist there. JBoss/WildFly on the other have seems to have some implicit context when deploying the application and actually as the java:app existing under the applications/<module-name> inside the JNDI tree. Hibernate doesn't know anything about this structure.
I've modified my implementation is organize these session factory bindings by application name at the root of the JNDI tree like this:
hib > myApp > sessions > MY_SESSION_FACTORY
I hope this helps someone else out.

Sometimes Hibernate can not get connection by C3P0

I have a project use Struts2+hibernate3(c3p0),
Following is my C3P0 configuration
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.acquire_increment">2</property>
<property name="hibernate.c3p0.idle_test_period">15</property>
<property name="hibernate.c3p0.max_idle_time">10</property>
<property name="hibernate.c3p0.max_size">50</property>
<property name="hibernate.c3p0.max_statements">100</property>
<property name="hibernate.c3p0.min_size">20</property>
<property name="hibernate.c3p0.timeout">10</property>
<property name="hibernate.c3p0.validate">true</property>
<property name="hibernate.c3p0.preferredTestQuery">select 1 from dual</property>
<property name="automaticTestTable">Test</property>
<!-- <property name="hibernate.c3p0.testConnectionOnCheckout">true</property> -->
<property name="hibernate.connection.autoReconnect">true</property>
<property name="hibernate.connection.autoReconnectForPools">true</property>
<property name="hibernate.connection.is-connection-validation-required">true</property>
My database is mysql and I can not config it (in cloud)
My problem is some time I got following message
Caused by: org.hibernate.exception.GenericJDBCException: Cannot open connection
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142)
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85)
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354)
at com.rh.ws.getAllMessageAction.getAllMessage(getAllMessageAction.java:42)
... 86 more
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:118)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:690)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)
at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
... 91 more
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1422)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:606)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:526)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConnectionInUse(C3P0PooledConnectionPool.java:756)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:683)
The wait_timeout is 30s in my database(mysql) and it's can not change.
I try to set the max_idle_time to 20 and I discover it doesn't work.
Do I need close the connection every time? or just close the session is fine?

When you close a Session it will automatically close the underlying connection. You should also commit the Hibernate Transaction on success and rollback on failure. This will ensure that the database transaction is properly terminated.
If you don't close teh Hibernate Session, then the JDBC connection won't be released. So when all hibernate.c3p0.max_size are being in use, you'll soon get the connection acquire connection exception.
One other cause might be due to very long running queries. Check your queries as well.
Make sure:
<prop key="hibernate.c3p0.checkoutTimeout">30</prop>
has an enough connection acquire timeout value.

WARN: SQL Error: 1064, SQLState: 42000

I have a problem with hibernate query.
UPDATE:
When I use this query it works like a charm:
public static List<Korisnik> UzmiSveKorisnike()
{
EntityManager em = Konekcija.getEmf().createEntityManager();
TypedQuery<Korisnik> q = em.createQuery("select k from Korisnik k where k.isActive = 1", Korisnik.class);
List<Korisnik> resultList = q.getResultList();
em.close();
return resultList;
}
But when I use one listed below, to select single result (like for login)...
I get this error: WARN: SQL Error: 1064, SQLState: 42000
I have tried variety of ways to implement this query, but without success. I will list them at the end of the post.
This is the code:
public static Korisnik ProvjeraKorisnickihPodataka(String kIme, String kLozinka)
{
EntityManager em = Konekcija.getEmf().createEntityManager();
{
TypedQuery<Korisnik> q = em.createQuery("select k from Korisnik k where k.isActive = 1 AND k.korisnickoIme=:ime AND k.lozinka =:lozinka", Korisnik.class);
q.setParameter("ime", kIme);
q.setParameter("lozinka", kLozinka);
Korisnik provjeren = q.getSingleResult();
em.close();
return provjeren;
Even if I replace :ime and :lozinka with actual data like "k.korisnickoIme='msbtest' and k.lozinka = 'msbtest'" I get the same error.
Your help is appreciated.
Thank you!
Complete stack:
Hibernate: select TOP(?) korisnik0_.KorisnikID as KorisnikID11_, korisnik0_.agencija_AgencijaID as agencija8_11_, korisnik0_.ime as ime11_, korisnik0_.isActive as isActive11_, korisnik0_.kontakt as kontakt11_, korisnik0_.korisnickoIme as korisnic5_11_, korisnik0_.lozinka as lozinka11_, korisnik0_.prezime as prezime11_, korisnik0_.rola_RolaID as rola9_11_ from Korisnik korisnik0_ where korisnik0_.isActive=1 and korisnik0_.korisnickoIme=? and korisnik0_.lozinka=?
Jul 05, 2013 11:45:22 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 1064, SQLState: 42000
Jul 05, 2013 11:45:22 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.KorisnikID as KorisnikID11_, korisnik0_.agencija_AgencijaID as agencija8_11_, k' at line 1
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.KorisnikID as KorisnikID11_, korisnik0_.agencija_AgencijaID as agencija8_11_, k' at line 1
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1377)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1300)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:318)
at Servis.LoginServis.ProvjeraKorisnickihPodataka(LoginServis.java:35)
at UI.LogInFrm.do_btnPrijava_widgetSelected(LogInFrm.java:173)
at UI.LogInFrm$1.widgetSelected(LogInFrm.java:121)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at UI.LogInFrm.main(LogInFrm.java:44)
Caused by: org.hibernate.exception.SQLGrammarException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.KorisnikID as KorisnikID11_, korisnik0_.agencija_AgencijaID as agencija8_11_, k' at line 1
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:82)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at com.sun.proxy.$Proxy10.executeQuery(Unknown Source)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1926)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1727)
at org.hibernate.loader.Loader.doQuery(Loader.java:852)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:293)
at org.hibernate.loader.Loader.doList(Loader.java:2411)
at org.hibernate.loader.Loader.doList(Loader.java:2397)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2227)
at org.hibernate.loader.Loader.list(Loader.java:2222)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1247)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:285)
... 9 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.KorisnikID as KorisnikID11_, korisnik0_.agencija_AgencijaID as agencija8_11_, k' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1053)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2734)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
... 25 more
mapping goes like this:
/**
** Class Korisnik
**/
#Entity
public class Korisnik implements Serializable {
//Fields
#Id
#GeneratedValue
private Integer KorisnikID;
private String ime;
private String prezime;
private String kontakt;
private String korisnickoIme;
private String lozinka;
private Boolean isActive;
#JoinColumn(nullable = false)
#ManyToOne
private Agencija agencija;
#JoinColumn(nullable = false)
#ManyToOne
private Rola rola;
and getters and setters go...
OK, my persistence.xml file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="MojaOznaka1" transaction-type="RESOURCE_LOCAL">
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<!-- Podaci o bazi podataka -->
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://xxxxxxxxx.xxxxxxxxx.xxx/xxxxxxxxx/" />
<property name="javax.persistence.jdbc.user" value="xxxxxx" />
<property name="javax.persistence.jdbc.password" value="xxxxxx" />
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<!-- hiberante dialect -->
<property name="hibernate.dialect" value="org.hibernate.dialect.SQLServer2008Dialect" />
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size" value="1" />
<!-- Ispis SQL koda u konzolu -->
<property name="hibernate.show_sql" value="true" />
<!-- formatiranje SQL koda ispisanog u konzolni prozor -->
<property name="hibernate.format_sql" value="false" />
<!-- Vrijednost "update" kreira tabele ako nepostoje -->
<!-- <property name="hibernate.hbm2ddl.auto" value="update" /> -->
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class" value="thread" />
<!-- Disable the second-level cache -->
<property name="cache.provider_class" value="org.hibernate.cache.NoCacheProvider" />
<!-- automatsko prepoznavanje JPA klasa -->
<property name="hibernate.archive.autodetection" value="class, hbm" />
</properties>
</persistence-unit>
</persistence>
OK, now what???

The query output you give suggests you told Hibernate to generate SQL for a MS-SQL Server (using TOP(1) to fetch the topmost row).
Since you're using a mysql database as a backend, that won't work. Try adding
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
to your persistence.xml or wherever you configure JPA.
As #Secko mentions in the comment, omitting the dialect altogether might even select a better (more specific) one.

This error usually indicates some mapping error. Are all fields used in the where are actually fields of the "Korisnik" class? HQL uses the field names and not the column names from the database.

Eclipse RCP throws exception when I try to use JPA for local data storage

I have the following code in my RCP application:
EntityManagerFactory emf = Persistence.createEntityManagerFactory("todos");
EntityManager em = emf.createEntityManager();
Query q = em.createQuery("select t from Todo t");
#SuppressWarnings("unchecked")
List<Todo> todos = (List<Todo>)q.getResultList();
My config is META-INF/persistence.xml and contains:
<?xml version="1.0" encoding="UTF-8" ?>
<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" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="todos" transaction-type="RESOURCE_LOCAL">
<class>foo.bar.Todo</class>
<properties>
<property name="javax.persistence.jdbc.driver"
value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="javax.persistence.jdbc.url"
value="jdbc:derby:/home/pocon64/myDb;create=true" />
<property name="javax.persistence.jdbc.user" value="test" />
<property name="javax.persistence.jdbc.password" value="test" />
<!-- EclipseLink should create the database schema automatically -->
<property name="eclipselink.ddl-generation" value="create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="database" />
</properties>
</persistence-unit>
</persistence>
When I try to run the application, it starts fine, but displays the error:
Could not create the view:
Exception Description: An exception was thrown while searching for persistence archives with ClassLoader: org.eclipse.core.runtime.internal.adaptor.ContextFinder#4b51ac10
Internal Exception: Exception [EclipseLink-30009] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while trying to load persistence unit at url: bundleresource://51.fwk2013125681:10
Internal Exception: Exception [EclipseLink-30004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while processing persistence.xml from URL: bundleresource://51.fwk2013125681:10
Internal Exception:
(1. URI was not reported to parser for entity [document])
The db file isn't created at all. Any ideas what's causing this?
ADDITION: Full stack trace below:
Local Exception Stack:
Exception [EclipseLink-30009] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while trying to load persistence unit at url: bundleresource://51.fwk998462082:10
Internal Exception: Exception [EclipseLink-30004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while processing persistence.xml from URL: bundleresource://51.fwk998462082:10
Internal Exception:
(1. URI was not reported to parser for entity [document])
at org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionLoadingFromUrl(PersistenceUnitLoadingException.java:100)
at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processPersistenceArchive(PersistenceUnitProcessor.java:538)
at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.getPersistenceUnits(PersistenceUnitProcessor.java:444)
at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.findPersistenceUnitInfoInArchive(JPAInitializer.java:172)
at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.findPersistenceUnitInfoInArchives(JPAInitializer.java:154)
at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.findPersistenceUnitInfo(JPAInitializer.java:135)
at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:73)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
at com.diligentgaming.dcm.workstation.plugins.core.dashboard.DashboardView.createPartControl(DashboardView.java:64)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)
at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:534)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:643)
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:570)
at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568)
at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:272)
at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:981)
at org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2714)
at org.eclipse.ui.internal.WorkbenchWindow$28.run(WorkbenchWindow.java:3030)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:3011)
at org.eclipse.ui.internal.WorkbenchWindow.busyOpenPage(WorkbenchWindow.java:799)
at org.eclipse.ui.internal.Workbench$23.runWithException(Workbench.java:1229)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3938)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3615)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1600)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3938)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3615)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2609)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at com.diligentgaming.dcm.workstation.plugins.core.Application.start(Application.java:20)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: Exception [EclipseLink-30004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while processing persistence.xml from URL: bundleresource://51.fwk998462082:10
Internal Exception:
(1. URI was not reported to parser for entity [document])
at org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionProcessingPersistenceXML(PersistenceUnitLoadingException.java:118)
at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processPersistenceXML(PersistenceUnitProcessor.java:587)
at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processPersistenceArchive(PersistenceUnitProcessor.java:536)
... 63 more
Caused by:
(1. URI was not reported to parser for entity [document])
at org.eclipse.persistence.internal.jpa.deployment.xml.parser.XMLExceptionHandler.error(XMLExceptionHandler.java:28)
at org.eclipse.persistence.internal.jpa.deployment.xml.parser.XMLExceptionHandler.warning(XMLExceptionHandler.java:23)
at gnu.xml.aelfred2.SAXDriver.warn(SAXDriver.java:935)
at gnu.xml.aelfred2.SAXDriver.startExternalEntity(SAXDriver.java:631)
at gnu.xml.aelfred2.XmlParser.pushURL(XmlParser.java:3358)
at gnu.xml.aelfred2.XmlParser.doParse(XmlParser.java:159)
at gnu.xml.aelfred2.SAXDriver.parse(SAXDriver.java:320)
at gnu.xml.aelfred2.XmlReader.parse(XmlReader.java:294)
at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processPersistenceXML(PersistenceUnitProcessor.java:577)
... 64 more</code>

The answer turned out to be to remove the gnujaxp.jar from the Classpath, everything seems to work fine after that.