RepeatTooManyBean.java

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package com.sun.faces.test.servlet30.facelets;

import com.sun.faces.component.visit.FullVisitContext;
import java.util.ArrayList;
import java.util.List;
import javax.el.ValueExpression;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.component.UIComponent;
import javax.faces.component.ValueHolder;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;

@ManagedBean(name = "repeatTooManyBean")
@RequestScoped
public class RepeatTooManyBean {

    private List<String> _list;
    private StringBuilder iterations = new StringBuilder();

    public RepeatTooManyBean() {
        _list = new ArrayList();
        for (int i = 1; i <= 10; i++) {
            _list.add(String.valueOf(i));
        }
    }

    public String getIterations() {
        return iterations.toString();
    }

    public List<String> getList() {
        return _list;
    }

    public void visitChildren() {
        final FacesContext context = FacesContext.getCurrentInstance();
        context.getViewRoot().visitTree(new FullVisitContext(context), new VisitCallback() {
            @Override
            public VisitResult visit(VisitContext visitContext, UIComponent target) {
                if (target instanceof ValueHolder
                        && target.getId().equals("out")) {
                    ValueExpression expr = target.getValueExpression("value");
                    Object value = expr.getValue(context.getELContext());
                    iterations.append(value);
                    return VisitResult.REJECT;
                }
                return VisitResult.ACCEPT;
            }
        });
    }
}