Java <；p:selectManyMenu返回数组列表大小0

Primefaces的selectMany组件有问题

我在selectManyMenu中检查了一些选项，但在bean Breservarista中返回数组列表大小0

<p:selectManyMenu id="manyHoras" value="#{bReservarPista.horasCheckMarcadas}" converter="HoraCheckConverter"
                                  var="horaCheck" filter="true" filterMatchMode="contains" showCheckbox="true" style="height: 235px">
                    <f:selectItems value="#{bReservarPista.horasCheck}" var="horaCheck" itemLabel="#{horaCheck.label}" itemValue="#{horaCheck}" />


                   <p:column>
                        <h:outputText value="#{horaCheck.label}" />
                   </p:column>

                </p:selectManyMenu>

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谢谢

请发布HoraCheckConverter的代码，可能就是这个原因。谢谢，我已经添加了yetPost和。。。问题总是在我身边，类不属于数据库解决方案简单，不使用转换器。

 public void setHorasCheckMarcadas(ArrayList<HoraCheck> horasCheckMarcadas) {
    this.horasCheckMarcadas = horasCheckMarcadas;

   @FacesConverter("HoraCheckConverter")

public class HoraCheckConverter implements Converter{
@Override  //Este método lo que hace es devolver un objeto buscado con un string value. 
public Object getAsObject(FacesContext context, UIComponent component, String value) {
    if(value != null && value.trim().length() > 0) {
        try {
            // el original de cine. se conectaba a ModeloBD. Podría hacer un ModeloBD aqui, o conectar con el dao
             DaoHoraCheck daohoraCheck =  new DaoImplHoraCheck();
             HoraCheck cat= daohoraCheck.verHoraCheck(Integer.parseInt(value));
            return cat;

        } catch(NumberFormatException e) {
            throw new ConverterException(new FacesMessage(FacesMessage.SEVERITY_ERROR, "Conversion Error", "Not a valid Cine."));
        }
    }
    else {
        return null;
    }
}

@Override
public String getAsString(FacesContext context, UIComponent component, Object value) {

        try {

    if(value != null) {
        return String.valueOf(((HoraCheck)value).getIdHoraCheck());
    }
    else {
        return null;
    }

      }
      catch (Exception e) {
       return null;
      }

}