title: HQL java.lang.NumberFormatException: For input string
body: <p>Hello can you please help me. I have been trying to fix this for past few days without any success. I am trying to query "Biljeska" objects and return them as Biljeska list. Classes setup:</p>
  
  <p>Biljeznica.java:</p>
  
  <pre><code>@Entity
  @Table(name = "biljeznica")
  public class Biljeznica implements Serializable {
  
      /**
       * 
       */
      private static final long serialVersionUID = -5589212916227508153L;
  
      @Id
      @Column(name= "naziv")
      private String naziv;
  
      @Column(name= "opis")
      private String opis;
  
      public Biljeznica(){}
  // getters and setters
  </code></pre>
  
  <p>Korisnik.java:</p>
  
  <pre><code>@Entity
  @Table(name = "user")
  public class Korisnik extends NovaBiljeskaForm implements Serializable {
  
      /**
       * 
       */
      private static final long serialVersionUID = 3476436475286629836L;
  
      @Id
      @Column(name= "id")
      @GeneratedValue
      private int id;
  
      @Column(name= "ime")
      private String ime;
  
      @Column(name= "prezime")
      private String prezime;
  
      @Column(name= "username")
      private String nick;
  
      public Korisnik(){}
  //getters and setters
  </code></pre>
  
  <p>Biljeska.java:</p>
  
  <pre><code>@Entity
  @Table(name = "biljeska")
  public class Biljeska implements Serializable {
  
      /**
       * 
       */
      private static final long serialVersionUID = 3706596321179671012L;
  
      @Id
      @Column(name= "id")
      @GeneratedValue
      int id;
  
      @Column(name = "naslov")
      private String naslov;
  
      @Column(name = "tekst")
      private String tekst;
  
      @ManyToOne (cascade = CascadeType.ALL)
      @JoinColumn(name ="korisnik")
      private Korisnik korisnik;
  
      @ManyToOne (cascade = CascadeType.ALL)
      @JoinColumn(name = "biljeznica")
      private Biljeznica biljeznica;
  
      public Biljeska(){}
  </code></pre>
  
  <p>h2 schema: </p>
  
  <pre><code>CREATE TABLE user (
  id INT(11) IDENTITY PRIMARY KEY,
  ime VARCHAR(50) NOT NULL,
  prezime VARCHAR(50) NOT NULL,
  username VARCHAR(45),
  password VARCHAR(100) NOT NULL ,
  enabled TINYINT NOT NULL DEFAULT 1
  );
  CREATE TABLE biljeznica (
  naziv VARCHAR(50) PRIMARY KEY,
  opis VARCHAR(100) NOT NULL
  );
  CREATE TABLE biljeska (
  id INT(11) IDENTITY PRIMARY KEY,
  naslov VARCHAR(100),
  tekst VARCHAR(1000),
  korisnik VARCHAR(45) NOT NULL,
  biljeznica VARCHAR(50) NOT NULL,
  FOREIGN KEY (korisnik) REFERENCES user (username),
  FOREIGN KEY (biljeznica) REFERENCES biljeznica (naziv)
  );
  </code></pre>
  
  <p>Data i am inserting into schema via test-data.sql :</p>
  
  <pre><code>INSERT INTO user(ime, prezime,username,password,enabled)
  VALUES ('Ivo','Ivić','iivic','$2a$10$VQoRdaQK0KzAl4QoBzfZleRBcHitGS5jRA771ilGdL2DvkVTLDqSe', true);
  INSERT INTO user(ime, prezime,username,password,enabled)
  VALUES ('Marko','Markić','mmarkic','$2a$10$VQoRdaQK0KzAl4QoBzfZleRBcHitGS5jRA771ilGdL2DvkVTLDqSe', true);
  INSERT INTO user(ime, prezime,username,password,enabled)
  VALUES ('Pero','Perić','pperic','$2a$10$VQoRdaQK0KzAl4QoBzfZleRBcHitGS5jRA771ilGdL2DvkVTLDqSe', true);
  INSERT INTO user(ime, prezime,username,password,enabled)
  VALUES ('Adminko','Adminić','admin','$2a$10$VQoRdaQK0KzAl4QoBzfZleRBcHitGS5jRA771ilGdL2DvkVTLDqSe', true);
  INSERT INTO user_role (username, role)
  VALUES ('iivic', 'ROLE_USER');
  INSERT INTO user_role (username, role)
  VALUES ('mmarkic', 'ROLE_USER');
  INSERT INTO user_role (username, role)
  VALUES ('pperic', 'ROLE_USER');
  INSERT INTO user_role (username, role)
  VALUES ('admin', 'ROLE_USER');
  INSERT INTO user_role (username, role)
  VALUES ('admin', 'ROLE_ADMIN');
  INSERT INTO biljeznica(naziv, opis)
  VALUES('Web aplikacije u Javi', 'Bilješke s predavanja iz kolegija web aplikacije u
  Javi');
  INSERT INTO biljeznica(naziv, opis)
  VALUES('Razvoj aplikacija na Android platformi', 'Bilješke s predavanja kolegija razvoj
  aplikacija na Android platformi');
  INSERT INTO biljeznica(naziv, opis)
  VALUES('Napredne teme računalnih mreža', 'Bilješke s predavanja napredne teme
  računalnih mreža');
  INSERT INTO biljeska(naslov, tekst, korisnik, biljeznica)
  VALUES('Testni naslov', 'Testni tekst', 'iivic', 'Web aplikacije u Javi');
  INSERT INTO biljeska(naslov, tekst, korisnik, biljeznica)
  VALUES('Moj naslov', 'Moj tekst', 'pperic', 'Web aplikacije u Javi');
  </code></pre>
  
  <p>Method in repository class where i want to return list of Biljeska objects:</p>
  
  <pre><code>@Autowired
      public HibernateBiljeskaRepository(SessionFactory sessionFactory) {
          this.sessionFactory = sessionFactory;
      }
  
      private Session currentSession() {
          return sessionFactory.getCurrentSession();
      }
      public List&lt;Biljeska&gt; findAll() {
          return currentSession().createQuery("select b from Biljeska b, Biljeznica bi, Korisnik k where b.korisnik = k and b.biljeznica = bi",Biljeska.class).getResultList();
      }
  </code></pre>
  
  <p>Exception occurs at return statment of findAll() method</p>
  
  <p>Error messagge i am getting:</p>
  
  <pre><code>Apr 28, 2017 1:19:01 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
  WARN: SQL Error: 22018, SQLState: 22018
  Apr 28, 2017 1:19:01 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
  ERROR: Data conversion error converting "iivic"; SQL statement:
  select biljeska0_.id as id1_0_, biljeska0_.biljeznica as biljezni4_0_, biljeska0_.korisnik as korisnik5_0_, biljeska0_.naslov as naslov2_0_, biljeska0_.tekst as tekst3_0_ from biljeska biljeska0_ cross join biljeznica biljeznica1_ cross join user korisnik2_ where biljeska0_.korisnik=korisnik2_.id and biljeska0_.biljeznica=biljeznica1_.naziv [22018-193]
  Apr 28, 2017 1:19:01 AM org.apache.catalina.core.StandardWrapperValve invoke
  SEVERE: Servlet.service() for servlet [appServlet] in context with path [/labos1] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.DataException: could not extract ResultSet] with root cause
  java.lang.NumberFormatException: For input string: "iivic"
      at java.lang.NumberFormatException.forInputString(Unknown Source)
      at java.lang.Long.parseLong(Unknown Source)
      at java.lang.Long.parseLong(Unknown Source)
      at org.h2.value.Value.convertTo(Value.java:922)
      at org.h2.mvstore.db.MVPrimaryIndex.getKey(MVPrimaryIndex.java:338)
      at org.h2.mvstore.db.MVDelegateIndex.find(MVDelegateIndex.java:69)
      at org.h2.index.BaseIndex.find(BaseIndex.java:128)
      at org.h2.index.IndexCursor.find(IndexCursor.java:169)
      at org.h2.table.TableFilter.next(TableFilter.java:467)
      at org.h2.table.TableFilter.next(TableFilter.java:537)
      at org.h2.command.dml.Select.queryFlat(Select.java:542)
      at org.h2.command.dml.Select.queryWithoutCache(Select.java:655)
      at org.h2.command.dml.Query.query(Query.java:341)
      at org.h2.command.dml.Query.query(Query.java:309)
      at org.h2.command.dml.Query.query(Query.java:36)
      at org.h2.command.CommandContainer.query(CommandContainer.java:110)
      at org.h2.command.Command.executeQuery(Command.java:201)
      at org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:110)
      at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:71)
      at org.hibernate.loader.Loader.getResultSet(Loader.java:2123)
      at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1911)
      at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1887)
      at org.hibernate.loader.Loader.doQuery(Loader.java:932)
      at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349)
      at org.hibernate.loader.Loader.doList(Loader.java:2615)
      at org.hibernate.loader.Loader.doList(Loader.java:2598)
      at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2430)
      at org.hibernate.loader.Loader.list(Loader.java:2425)
      at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:502)
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:375)
      at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
      at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1481)
      at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1441)
      at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1410)
      at org.hibernate.query.Query.getResultList(Query.java:146)
      at hr.tvz.hibernate.HibernateBiljeskaRepository.findAll(HibernateBiljeskaRepository.java:58)
      at hr.tvz.hibernate.HibernateBiljeskaRepository$$FastClassBySpringCGLIB$$d420114f.invoke(&lt;generated&gt;)
      at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
      at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721)
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
      at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
      at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
      at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
      at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
      at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656)
      at hr.tvz.hibernate.HibernateBiljeskaRepository$$EnhancerBySpringCGLIB$$d7521f20.findAll(&lt;generated&gt;)
      at hr.tvz.controleri.NovaBiljeskaController.showSpremljeneBiljeske(NovaBiljeskaController.java:215)
      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.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
      at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
      at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
      at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
      at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
      at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.lang.Thread.run(Unknown Source)
  </code></pre>
  
  <p>I am really confused and i do not understand why am i getting this error...
  Thank you in advance!</p>
  
  <p>Edit :</p>
  
  <p>Solved thanks to Alex</p>
  
  <p>Solution: change Biljeska attributes into </p>
  
  <pre><code>@ManyToOne (fetch = FetchType.EAGER)
  @JoinColumn(name ="korisnik", referencedColumnName="username")
  private Korisnik korisnik;
  
  @ManyToOne (fetch = FetchType.EAGER)
  @JoinColumn(name = "biljeznica", referencedColumnName="naziv")
  private Biljeznica biljeznica;
  </code></pre>
  
  <p>and hql to :</p>
  
  <pre><code>"select b from Biljeska b"
  </code></pre>