problems with <rich:columns>
hello, whe i use the <rich:columns> i get this exception
javax.servlet.jsp.JspTagException: FOREACH_BAD_ITEMS
this my .jsf
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%><%@taglib
uri="http://yui4jsf.sourceforge.net" prefix="yui"%><%@taglib
uri="http://java.sun.com/jsf/html" prefix="h"%><%@taglib
uri="http://www.jenia.org/jsf/popup" prefix="jp"%><%@taglib
uri="http://richfaces.org/a4j" prefix="a4j"%><%@taglib
uri="https://ajax4jsf.dev.java.net/ajax" prefix="ajax"%><%@taglib
uri="http://richfaces.org/rich" prefix="rich"%><%@taglib
uri="http://richfaces.ajax4jsf.org/rich" prefix="richfaces"%><%@taglib
uri="http://java.sun.com/jstl/core" prefix="c"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
Insert title here
<f:view>
<h:form>
<rich:scrollableDataTable binding="#{prueba.dt}" var="datos">
<rich:columns value="#{prueba.columnas}" var="col" begin="0">
<f:facet name="header">
<h:outputText value="#{col.header}" />
</f:facet>
</rich:columns>
</rich:scrollableDataTable>
<h:commandButton value="Buscar" action="#{prueba.buscar_action}"></h:commandButton>
</h:form>
</f:view>
this my backingbean
package com.esoj.bd.comun;
import java.util.ArrayList;
import javax.faces.context.FacesContext;
import javax.faces.model.ResultDataModel;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.jstl.sql.ResultSupport;
import org.richfaces.component.html.HtmlScrollableDataTable;
import org.richfaces.model.impl.ListDataModel;
import com.esoj.bd.dao.CobrosDAO;
import com.esoj.util.comun.ColumnsDataGrid;
import com.sun.rowset.CachedRowSetImpl;
public class Prueba{
private CachedRowSetImpl crs = CobrosDAO.obtenerPagos();
private HtmlScrollableDataTable dt = new HtmlScrollableDataTable();
private ListDataModel columnas;
HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(true);
public Prueba(){
initColums();
}
public String buscar_action(){
try {
//CachedRowSetImp Object for DataTable value
dt.setValue(new ResultDataModel(ResultSupport.toResult(CobrosDAO.obtenerPagos())));
} catch (Exception e) {
System.out.println("Error en el metodo buscar_action de la Clase Cobros: " + e.getMessage());
}
return "probando";
}
/**
* @param crs the crs to set
*/
public void setCrs(CachedRowSetImpl crs) {
this.crs = crs;
}
/**
* @return the crs
*/
public CachedRowSetImpl getCrs() {
return crs;
}
/**
* @param dt the dt to set
*/
public void setDt(HtmlScrollableDataTable dt) {
this.dt = dt;
}
/**
* @return the dt
*/
public HtmlScrollableDataTable getDt() {
return dt;
}
public void initColums(){
ArrayList columns = new ArrayList();
try {
//JLMM Construimos los datos basicos para que se muestre el datagrid para esta seccion
columns.add(new ColumnsDataGrid("pag_id","0",false,"ID",""));
columns.add(new ColumnsDataGrid("pag_concepto","300",true,"Descripción",""));
columns.add(new ColumnsDataGrid("pag_importe","50",true,"Importe",""));
columns.add(new ColumnsDataGrid("pag_proveedor","300",true,"Proveedor",""));
columns.add(new ColumnsDataGrid("pag_fvencimiento","200",true,"Fecha Vencimiento",""));
columns.add(new ColumnsDataGrid("pag_fpago","100",true,"Forma Pago",""));
columns.add(new ColumnsDataGrid("pag_banco","50",true,"Banco",""));
columnas = new ListDataModel(columns);
} catch (Exception e) {
// TODO: handle exception
System.out.println("AQUI*********************************************** "+e.getMessage());
e.printStackTrace();
}
}
/**
* @param columnas the columnas to set
*/
public void setColumnas(ListDataModel columnas) {
this.columnas = columnas;
}
/**
* @return the columnas
*/
public ListDataModel getColumnas() {
return columnas;
}
}
