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Thread: getting errors needed to be clear

  1. #1
    Junior Member
    Join Date
    Jan 2010
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    Default getting errors needed to be clear

    i have two entity one with @Id an other with @EmbeddedId

    and whe i try to merge the class with i get

    17:49:54,131 ERROR [BasicPropertyAccessor] IllegalArgumentException in class: com.marcos.model.Ciudad, getter method of property: id
    17:49:54,132 SEVERE [marcosEJBPU] update failed
    javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.marcos.model.Ciudad.id
    at org.hibernate.ejb.AbstractEntityManagerImpl.throwP ersistenceException(AbstractEntityManagerImpl.java :614)
    at org.hibernate.ejb.AbstractEntityManagerImpl.merge( AbstractEntityManagerImpl.java:244)
    at org.jboss.ejb3.entity.ExtendedEntityManager.merge( ExtendedEntityManager.java:106)
    at com.marcos.model.PaisFacade.update(PaisFacade.java :83)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeTar get(MethodInvocation.java:122)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:111)
    at org.jboss.ejb3.EJBContainerInvocationWrapper.invok eNext(EJBContainerInvocationWrapper.java:69)
    at org.jboss.ejb3.interceptors.aop.InterceptorSequenc er.invoke(InterceptorSequencer.java:73)
    at org.jboss.ejb3.interceptors.aop.InterceptorSequenc er.aroundInvoke(InterceptorSequencer.java:59)
    at sun.reflect.GeneratedMethodAccessor324.invoke(Unkn own Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.jboss.aop.advice.PerJoinpointAdvice.invoke(Per JoinpointAdvice.java:174)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.interceptors.aop.InvocationContextI nterceptor.fillMethod(InvocationContextInterceptor .java:72)
    at org.jboss.aop.advice.org.jboss.ejb3.interceptors.a op.InvocationContextInterceptor_z_fillMethod_95603 87.invoke(InvocationContextInterceptor_z_fillMetho d_9560387.java)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.interceptors.aop.InvocationContextI nterceptor.setup(InvocationContextInterceptor.java :88)
    at org.jboss.aop.advice.org.jboss.ejb3.interceptors.a op.InvocationContextInterceptor_z_setup_9560387.in voke(InvocationContextInterceptor_z_setup_9560387. java)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.connectionmanager.CachedConnectionI nterceptor.invoke(CachedConnectionInterceptor.java :62)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.entity.ExtendedPersistenceContextPr opagationInterceptor.invoke(ExtendedPersistenceCon textPropagationInterceptor.java:74)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.entity.TransactionScopedEntityManag erInterceptor.invoke(TransactionScopedEntityManage rInterceptor.java:56)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.AllowedOperationsInterceptor.invoke (AllowedOperationsInterceptor.java:47)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInter ceptor.java:42)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.stateful.StatefulInstanceIntercepto r.invoke(StatefulInstanceInterceptor.java:81)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPoli cy.java:79)
    at org.jboss.aspects.tx.TxInterceptor$Required.invoke (TxInterceptor.java:190)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.aspects.tx.TxPropagationInterceptor.invo ke(TxPropagationInterceptor.java:76)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInter ceptor.java:42)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.security.Ejb3AuthenticationIntercep torv2.invoke(Ejb3AuthenticationInterceptorv2.java: 186)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.ENCPropagationInterceptor.invoke(EN CPropagationInterceptor.java:41)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.BlockContainerShutdownInterceptor.i nvoke(BlockContainerShutdownInterceptor.java:67)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.aspects.currentinvocation.CurrentInvocat ionInterceptor.invoke(CurrentInvocationInterceptor .java:67)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:102)
    at org.jboss.ejb3.session.SessionSpecContainer.invoke (SessionSpecContainer.java:176)
    at org.jboss.ejb3.session.SessionSpecContainer.invoke (SessionSpecContainer.java:216)
    at org.jboss.ejb3.proxy.impl.handler.session.SessionP roxyInvocationHandlerBase.invoke(SessionProxyInvoc ationHandlerBase.java:207)
    at org.jboss.ejb3.proxy.impl.handler.session.SessionP roxyInvocationHandlerBase.invoke(SessionProxyInvoc ationHandlerBase.java:164)
    at $Proxy1311.update(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at flex.messaging.services.remoting.adapters.JavaAdap ter.invoke(JavaAdapter.java:421)
    at flex.messaging.services.RemotingService.serviceMes sage(RemotingService.java:183)
    at flex.messaging.MessageBroker.routeMessageToService (MessageBroker.java:1406)
    at flex.messaging.endpoints.AbstractEndpoint.serviceM essage(AbstractEndpoint.java:1005)
    at flex.messaging.endpoints.amf.MessageBrokerFilter.i nvoke(MessageBrokerFilter.java:103)
    at flex.messaging.endpoints.amf.LegacyFilter.invoke(L egacyFilter.java:158)
    at flex.messaging.endpoints.amf.SessionFilter.invoke( SessionFilter.java:44)
    at flex.messaging.endpoints.amf.BatchProcessFilter.in voke(BatchProcessFilter.java:67)
    at flex.messaging.endpoints.amf.SerializationFilter.i nvoke(SerializationFilter.java:166)
    at flex.messaging.endpoints.BaseHTTPEndpoint.service( BaseHTTPEndpoint.java:308)
    at flex.messaging.MessageBrokerServlet.service(Messag eBrokerServlet.java:364)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
    at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doF ilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationV alve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.inv oke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstab lishmentValve.process(SecurityContextEstablishment Valve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstab lishmentValve.invoke(SecurityContextEstablishmentV alve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionV alve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run( JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:595)
    Caused by: org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.marcos.model.Ciudad.id
    at org.hibernate.property.BasicPropertyAccessor$Basic Getter.get(BasicPropertyAccessor.java:195)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer. getIdentifier(AbstractEntityTuplizer.java:206)
    at org.hibernate.persister.entity.AbstractEntityPersi ster.getIdentifier(AbstractEntityPersister.java:36 19)
    at org.hibernate.event.def.DefaultMergeEventListener. onMerge(DefaultMergeEventListener.java:145)
    at org.hibernate.impl.SessionImpl.fireMerge(SessionIm pl.java:714)
    at org.hibernate.impl.SessionImpl.merge(SessionImpl.j ava:696)
    at org.hibernate.engine.CascadingAction$6.cascade(Cas cadingAction.java:268)
    at org.hibernate.engine.Cascade.cascadeToOne(Cascade. java:291)
    at org.hibernate.engine.Cascade.cascadeAssociation(Ca scade.java:239)
    at org.hibernate.engine.Cascade.cascadeProperty(Casca de.java:192)
    at org.hibernate.engine.Cascade.cascadeCollectionElem ents(Cascade.java:319)
    at org.hibernate.engine.Cascade.cascadeCollection(Cas cade.java:265)
    at org.hibernate.engine.Cascade.cascadeAssociation(Ca scade.java:242)
    at org.hibernate.engine.Cascade.cascadeProperty(Casca de.java:192)
    at org.hibernate.engine.Cascade.cascade(Cascade.java: 153)
    at org.hibernate.event.def.DefaultMergeEventListener. cascadeOnMerge(DefaultMergeEventListener.java:459)
    at org.hibernate.event.def.DefaultMergeEventListener. entityIsDetached(DefaultMergeEventListener.java:31 8)
    at org.hibernate.event.def.DefaultMergeEventListener. onMerge(DefaultMergeEventListener.java:167)
    at org.hibernate.event.def.DefaultMergeEventListener. onMerge(DefaultMergeEventListener.java:81)
    at org.hibernate.impl.SessionImpl.fireMerge(SessionIm pl.java:704)
    at org.hibernate.impl.SessionImpl.merge(SessionImpl.j ava:688)
    at org.hibernate.impl.SessionImpl.merge(SessionImpl.j ava:692)
    at org.hibernate.ejb.AbstractEntityManagerImpl.merge( AbstractEntityManagerImpl.java:235)
    ... 90 more
    Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.hibernate.property.BasicPropertyAccessor$Basic Getter.get(BasicPropertyAccessor.java:169)
    ... 112 more


    HERE ARE THE CLASSES I USE

    package com.marcos.model;

    import java.util.HashSet;
    import java.util.Set;
    import javax.persistence.CascadeType;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.GeneratedValue;
    import static javax.persistence.GenerationType.IDENTITY;
    import javax.persistence.Id;
    import javax.persistence.OneToMany;
    import javax.persistence.Table;

    /**
    * Pais entity. @author MyEclipse Persistence Tools
    */
    @Entity
    @Table(name = "pais", catalog = "mymarcos&quot
    public class Pais implements java.io.Serializable {

    // Fields

    private Short idpais;
    private String nombre;
    private Set<Ciudad> ciudads = new HashSet<Ciudad>(0);

    // Constructors

    /** default constructor */
    public Pais() {
    }

    /** minimal constructor */
    public Pais(String nombre) {
    this.nombre = nombre;
    }

    /** full constructor */
    public Pais(String nombre, Set<Ciudad> ciudads) {
    this.nombre = nombre;
    this.ciudads = ciudads;
    }

    // Property accessors
    @Id
    @GeneratedValue(strategy = IDENTITY)
    @Column(name = "idpais", unique = true, nullable = false)
    public Short getIdpais() {
    return this.idpais;
    }

    public void setIdpais(Short idpais) {
    this.idpais = idpais;
    }

    @Column(name = "nombre", nullable = false, length = 60)
    public String getNombre() {
    return this.nombre;
    }

    public void setNombre(String nombre) {
    this.nombre = nombre;
    }

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "pais&quot
    public Set<Ciudad> getCiudads() {
    return this.ciudads;
    }

    public void setCiudads(Set<Ciudad> ciudads) {
    this.ciudads = ciudads;
    }

    }

    package com.marcos.model;

    import java.util.HashSet;
    import java.util.Set;
    import javax.persistence.AttributeOverride;
    import javax.persistence.AttributeOverrides;
    import javax.persistence.CascadeType;
    import javax.persistence.Column;
    import javax.persistence.EmbeddedId;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.JoinColumn;
    import javax.persistence.ManyToOne;
    import javax.persistence.OneToMany;
    import javax.persistence.Table;

    /**
    * Ciudad entity. @author MyEclipse Persistence Tools
    */
    @Entity
    @Table(name = "ciudad", catalog = "mymarcos&quot
    public class Ciudad implements java.io.Serializable {

    // Fields

    private CiudadId id;
    private Pais pais;
    private String nombre;
    private Set<Region> regions = new HashSet<Region>(0);

    // Constructors

    /** default constructor */
    public Ciudad() {
    }

    /** minimal constructor */
    public Ciudad(CiudadId id, Pais pais) {
    this.id = id;
    this.pais = pais;
    }

    /** full constructor */
    public Ciudad(CiudadId id, Pais pais, String nombre, Set<Region> regions) {
    this.id = id;
    this.pais = pais;
    this.nombre = nombre;
    this.regions = regions;
    }

    // Property accessors
    @EmbeddedId
    @AttributeOverrides( {
    @AttributeOverride(name = "idciudad", column = @Column(name = "idciudad", nullable = false)),
    @AttributeOverride(name = "paisIdpais", column = @Column(name = "pais_idpais", nullable = false)) })
    public CiudadId getId() {
    return this.id;
    }

    public void setId(CiudadId id) {
    this.id = id;
    }

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "pais_idpais", nullable = false, insertable = false, updatable = false)
    public Pais getPais() {
    return this.pais;
    }

    public void setPais(Pais pais) {
    this.pais = pais;
    }

    @Column(name = "nombre", length = 45)
    public String getNombre() {
    return this.nombre;
    }

    public void setNombre(String nombre) {
    this.nombre = nombre;
    }

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "ciudad&quot
    public Set<Region> getRegions() {
    return this.regions;
    }

    public void setRegions(Set<Region> regions) {
    this.regions = regions;
    }

    }

    package com.marcos.model;

    import javax.persistence.Column;
    import javax.persistence.Embeddable;

    /**
    * CiudadId entity. @author MyEclipse Persistence Tools
    */
    @Embeddable
    public class CiudadId implements java.io.Serializable {

    // Fields

    private Short idciudad;
    private Short paisIdpais;

    // Constructors

    /** default constructor */
    public CiudadId() {
    }

    /** full constructor */
    public CiudadId(Short idciudad, Short paisIdpais) {
    this.idciudad = idciudad;
    this.paisIdpais = paisIdpais;
    }

    // Property accessors

    @Column(name = "idciudad", nullable = false)
    public Short getIdciudad() {
    return this.idciudad;
    }

    public void setIdciudad(Short idciudad) {
    this.idciudad = idciudad;
    }

    @Column(name = "pais_idpais", nullable = false)
    public Short getPaisIdpais() {
    return this.paisIdpais;
    }

    public void setPaisIdpais(Short paisIdpais) {
    this.paisIdpais = paisIdpais;
    }

    public boolean equals(Object other) {
    if ((this == other))
    return true;
    if ((other == null))
    return false;
    if (!(other instanceof CiudadId))
    return false;
    CiudadId castOther = (CiudadId) other;

    return ((this.getIdciudad() == castOther.getIdciudad()) || (this
    .getIdciudad() != null
    && castOther.getIdciudad() != null && this.getIdciudad()
    .equals(castOther.getIdciudad())))
    && ((this.getPaisIdpais() == castOther.getPaisIdpais()) || (this
    .getPaisIdpais() != null
    && castOther.getPaisIdpais() != null && this
    .getPaisIdpais().equals(castOther.getPaisIdpais()) ));
    }

    public int hashCode() {
    int result = 17;

    result = 37 * result
    + (getIdciudad() == null ? 0 : this.getIdciudad().hashCode());
    result = 37
    * result
    + (getPaisIdpais() == null ? 0 : this.getPaisIdpais()
    .hashCode());
    return result;
    }

    }

    package com.marcos.model;

    import java.util.List;
    import java.util.logging.Level;

    import javax.ejb.Remove;
    import javax.ejb.Stateful;
    import javax.persistence.EntityManager;
    import javax.persistence.PersistenceContext;
    import javax.persistence.PersistenceContextType;
    import javax.persistence.Query;

    /**
    * Facade for entity Pais.
    *
    * @see com.marcos.model.Pais
    * @author MyEclipse Persistence Tools
    */
    @Stateful
    public class PaisFacade implements PaisFacadeLocal, PaisFacadeRemote {
    // property constants
    public static final String NOMBRE = "nombre";

    @PersistenceContext(unitName="marcosEJBPU&quo t;, type=PersistenceContextType.EXTENDED)
    private EntityManager entityManager;

    /**
    * Perform an initial save of a previously unsaved Pais entity. All
    * subsequent persist actions of this entity should use the #update()
    * method.
    *
    * @param entity
    * Pais entity to persist
    * @throws RuntimeException
    * when the operation fails
    */
    public void save(Pais entity) {
    LogUtil.log("saving Pais instance", Level.INFO, null);
    try {
    entityManager.persist(entity);
    LogUtil.log("save successful", Level.INFO, null);
    } catch (RuntimeException re) {
    LogUtil.log("save failed", Level.SEVERE, re);
    throw re;
    }
    }

    /**
    * Delete a persistent Pais entity.
    *
    * @param entity
    * Pais entity to delete
    * @throws RuntimeException
    * when the operation fails
    */
    public void del(Pais entity) {
    LogUtil.log("deleting Pais instance", Level.INFO, null);
    try {
    entity = entityManager.getReference(Pais.class, entity.getIdpais());
    entityManager.remove(entity);
    LogUtil.log("delete successful", Level.INFO, null);
    } catch (RuntimeException re) {
    LogUtil.log("delete failed", Level.SEVERE, re);
    throw re;
    }
    }

    /**
    * Persist a previously saved Pais entity and return it or a copy of it to
    * the sender. A copy of the Pais entity parameter is returned when the JPA
    * persistence mechanism has not previously been tracking the updated
    * entity.
    *
    * @param entity
    * Pais entity to update
    * @return Pais the persisted Pais entity instance, may not be the same
    * @throws RuntimeException
    * if the operation fails
    */
    public Pais update(Pais entity) {
    LogUtil.log("updating Pais instance", Level.INFO, null);
    try {
    Pais result = entityManager.merge(entity);
    LogUtil.log("update successful", Level.INFO, null);
    return result;
    } catch (RuntimeException re) {
    LogUtil.log("update failed", Level.SEVERE, re);
    throw re;
    }
    }

    public Pais findById(Short id) {
    LogUtil.log("finding Pais instance with id: " + id, Level.INFO, null);
    try {
    Pais instance = entityManager.find(Pais.class, id);
    return instance;
    } catch (RuntimeException re) {
    LogUtil.log("find failed", Level.SEVERE, re);
    throw re;
    }
    }

    /**
    * Find all Pais entities with a specific property value.
    *
    * @param propertyName
    * the name of the Pais property to query
    * @param value
    * the property value to match
    * @return List<Pais> found by query
    */
    @SuppressWarnings("unchecked&quot
    public List<Pais> findByProperty(String propertyName, final Object value) {
    LogUtil.log("finding Pais instance with property: " + propertyName
    + ", value: " + value, Level.INFO, null);
    try {
    final String queryString = "select model from Pais model where model."
    + propertyName + "= :propertyValue";
    Query query = entityManager.createQuery(queryString);
    query.setParameter("propertyValue", value);
    return query.getResultList();
    } catch (RuntimeException re) {
    LogUtil.log("find by property name failed", Level.SEVERE, re);
    throw re;
    }
    }

    public List<Pais> findByNombre(Object nombre) {
    return findByProperty(NOMBRE, nombre);
    }

    /**
    * Find all Pais entities.
    *
    * @return List<Pais> all Pais entities
    */
    @SuppressWarnings("unchecked&quot
    public List<Pais> findAll() {
    LogUtil.log("finding all Pais instances", Level.INFO, null);
    try {
    final String queryString = "select model from Pais model";
    Query query = entityManager.createQuery(queryString);
    return query.getResultList();
    } catch (RuntimeException re) {
    LogUtil.log("find all failed", Level.SEVERE, re);
    throw re;
    }
    }

    @Remove
    public void finished(){
    LogUtil.log("Bean destruido", Level.INFO, null);
    }

    }


  2. #2
    Super Moderator Json's Avatar
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    Default Re: getting errors needed to be clear

    I'm not completely aware of what return type the @Id annotation will let you use. I see you are returning CiudadId which I guess is a type you've created. Maybe you just need to have this as an int.

    // Json

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