How to change a list of another ManagedBean

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How to change a list of another ManagedBean

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#1 by (1 votes)
#2 by (0 votes)

2

I've developed a search area on my system where the user can add an item to their list of items. Like a shopping cart.

The search area uses a different ManagedBean than the user panel that has a dataTable that is loaded in another managedBean.

What I want: I'm already persisting the item correctly, however I use it in the SessionScoped user pane and wanted the dataTable list to update the new item immediately.

The way it is now I have to logout the user and log back in for the load item. I can not change to viewScoped because I have other components (dialog and confirmDialog) on the page that need data in memory.

Bean for Search page with method that registers a new item:

@ManagedBean(name = "api")
@SessionScoped
public class AplicacaoBean implements Serializable{
private static final long serialVersionUID = 1L;

// Pega o usuário logado
@ManagedProperty(value = "#{uBean.usuario}")
private Usuario usuario;

//Outros atributos e métodos

public String acompanharCaso() {
    Patrulheiro patrul = new Patrulheiro();
    if (usuario.getEmailAddress() != null
            && usuario.getEmailAddress() != "") {

        try {
            patrul = (Patrulheiro) buscarPatrulheiroPorEmail();
            assocLocaliza = new PatrulDesapLocaliza();

            assocLocaliza.setDesaparecido(desaparecido);
            assocLocaliza.setPatrulheiro(patrul);
            List<PatrulDesapLocaliza> acompanhamentos = Arrays
                    .asList(assocLocaliza);
            patrul.setPatrulLocalizaDesap(acompanhamentos);

            new PatrulheiroJPA().gravarAtualizar(patrul);
            FacesUtil
                    .addSuccessMessageWithDetail("frmDialogo",
                            "Dados enviados",
                            "Agora você está acompanhando esse caso! Verifique no painel de usuário");
        } catch (Exception e) {
            e.printStackTrace();
            // Não é um Patrulheiro
            FacesUtil.addErrorMessageWithDetail("frmDialogo", "Atenção",
                    "Você deve ser um Patrulheiro para acompanhar o caso!");
        }

    } else {
        // Nao está logado
        FacesUtil.addErrorMessageWithDetail("frmDialogo", "Atenção",
                "Logue-se como Patrulheiro para acompanhar o caso!");
    }
    return null;
}
}

Bean for User page with list that should receive the new item:

@ManagedBean(name = "patrulBean")
@SessionScoped
public class PatrulheiroBean implements Serializable{
  private static final long serialVersionUID = 1L;
  // Pega o usuário logado
  @ManagedProperty(value = "#{uBean.usuario}")
  private Usuario usuario;

  //Outros métodos e atributos

  @PostConstruct
  public void inicializar() {
      try {
          limpar();
          //lista que deve receber o novo desaparecido adicionado
          listaDesaparecido = new DesaparecidoJPA()
                  .buscarDesaparecidosPorIdPatrulheiro(usuario);

      } catch (Exception e) {
          System.out.println("Não foi possível resgatar os dados da lista de acompanhados");
          e.printStackTrace();
      }
  }

  public void limpar() {
      desaparecido = new Desaparecido();
      descricao = new DescricaoDesaparecido();
      patrulheiro = new Patrulheiro();
      assocLocaliza = new PatrulDesapLocaliza();
  }
}

I would like to load and change this user panel list in another bean, or when the user enters your panel the list will be updated?

java jsf

asked by anonymous 24.11.2015 / 15:23

2 answers

1

Include the ManagedBean as a property and update its collection.

@ManagedBean(name = "api")
@SessionScoped
public class AplicacaoBean implements Serializable{
private static final long serialVersionUID = 1L;

@ManagedProperty(value = "#{uBean.usuario}")
private Usuario usuario;

@ManagedProperty(value = "#{patrulBean}")
private PatrulheiroBean patrulheiroBean;

public String acompanharCaso() {
    //...
    patrulheiroBean.atualizaColecao();
}

24.11.2015 / 16:56

XAMPP 5.6.16, apache error with globlas on Search only files that match part of the name in a directory

score 0 · Accepted Answer

I was able to resolve this problem after trying to use @ManagedProperty(value = "#{patrulBean}") which caused me the errors in the comments.

I used the f:event tag with type preRenderView and made the call to the method that loads the list every time the page is called:

<ui:composition template="/WEB-INF/template/Layout.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:p="http://primefaces.org/ui">

<f:metadata>
    <f:event type="preRenderView" listener="#{patrulBean.iniciarLista}" />
</f:metadata>
...

More: JSF 2 PreRenderViewEvent example

Thanks for the help also Nilson