[RESOLVIDO] - fileUpload primefaces - armazenar imagens no BD

GRAVE: javax.faces.FacesException: java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.sun.faces.application.view.StateHolderSaver
        at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:1256)
        at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:672)
        at com.sun.faces.application.view.StateManagementStrategyImpl.restoreView(StateManagementStrategyImpl.java:284)
        at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:177)
        at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:131)
        at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:430)
        at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:143)
        at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:199)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
        at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:77)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at filtros.JPAFilter.doFilter(JPAFilter.java:36)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at filtros.LoginFilter.doFilter(LoginFilter.java:34)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.sun.faces.application.view.StateHolderSaver
        at com.sun.faces.application.view.StateManagementStrategyImpl$4.invokeContextCallback(StateManagementStrategyImpl.java:288)
        at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:1253)
        ... 46 more

<p:fileUpload fileUploadListener="#{fileUploadController.fileUploadAction}"
                  multiple="false" label="choose" allowTypes="*.mp3;*.jpg;*.png;*.gif;" description="Archives" />

import javax.faces.bean.ManagedBean;
import javax.persistence.EntityManager;
import modelo.Imagem;
import org.primefaces.event.FileUploadEvent;
import repositorios.ImagemRepository;

@ManagedBean
public class FileUploadController {

    private EntityManager entityManager;
    private Imagem imagem = new Imagem();

    public Imagem getImagem() {
        return imagem;
    }

    public void setImagem(Imagem imagem) {
        this.imagem = imagem;
    }

    public EntityManager getEntityManager() {
        return entityManager;
    }

    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

    public void fileUploadAction(FileUploadEvent event){
        byte [] conteudo = event.getFile().getContents();
        this.imagem.setConteudo(conteudo);

        ImagemRepository imagemRepository = new ImagemRepository(this.entityManager);
        imagemRepository.adiciona(imagem);
     }  
}

@Entity
public class Imagem implements Serializable {

    @Id
    @GeneratedValue
    private Long id;
    @Lob
    private byte [] conteudo;

    public byte[] getConteudo() {
        return conteudo;
    }

    public void setConteudo(byte[] conteudo) {
        this.conteudo = conteudo;
    }

    public Long getId() {
        return id;
    }

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

public class ImagemRepository {

    private EntityManager entityManager;

    public ImagemRepository(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

    public void adiciona(Imagem imagem) {
        this.entityManager.persist(imagem);
        this.entityManager.flush();
    }
}