Tree2 doesn't require that you put your tree in a form (at least with MyFaces implementation.) See the simple tree2 examples. Try running those same simple examples with the RI to see if there is a problem.
sean On 6/2/05, Ihab A.B. Awad <[EMAIL PROTECTED]> wrote: > Hi there, > > I am using the Tree2 component from MyFaces 1.0.9 with the JSF RI 1.1. To get > this component in my webapp, I am including commons-validator.jar and > myfaces-extensions.jar, and nothing else. > > With client side toggling, the component works just fine. > > When I tried server side toggling, I got a NPE, as pasted below. Here is my > diagnosis of what is happening -- > > - The Tree2 creates a UICommandLink for the navigation link and > tries to render it; > > - The JSF implemementation needs to add a hidden field during rendering; > > - The JSF implementation tries to find the nearest enclosing UIForm; but > > - The 'parent' of the created UICommandLink is null, hence a NPE. > > Here is the relevant portion of the stack trace -- > > java.lang.NullPointerException > com.sun.faces.renderkit.html_basic.CommandLinkRenderer. > getHiddenFieldName(CommandLinkRenderer.java:136) > com.sun.faces.renderkit.html_basic.CommandLinkRenderer. > encodeEnd(CommandLinkRenderer.java:320) > javax.faces.component.UIComponentBase. > encodeEnd(UIComponentBase.java:712) > org.apache.myfaces.custom.tree2.HtmlTreeRenderer. > encodeRecursive(HtmlTreeRenderer.java:573) > org.apache.myfaces.custom.tree2.HtmlTreeRenderer. > encodeNavigation(HtmlTreeRenderer.java:544) > org.apache.myfaces.custom.tree2.HtmlTreeRenderer. > encodeCurrentNode(HtmlTreeRenderer.java:327) > ... > > Is this a known problem? Would it go away if I used MyFaces as my JSF > implementation? (I would have tried this already, but I am still at an early > stage in my development and, unfortunately, I have stuff in my app that does > not work with MyFaces because it is not standards-clean yet.) > > Peace, > > -- > Ihab A.B. Awad <[EMAIL PROTECTED]> > Snr Scientific Programmer > Dept of Genetics >
