Yes, if TreeNode (the value returned by treeBacker.treeData) implements List you get this exception.
----- Original Message ----- From: "Sean Schofield" <[EMAIL PROTECTED]> To: "MyFaces Discussion" <[email protected]> Sent: Friday, March 25, 2005 9:20 AM Subject: Re: tree2 with empty TreeNode as base exception > Rob, did you figure this one out yet? > > sean > > > On Thu, 24 Mar 2005 16:47:42 -0500, Rob Decker <[EMAIL PROTECTED]> wrote: > > > > When I have an empty tree: > > > > treebacker.getTreeData { > > return new TreeNodeBase("branch", "root", "0", true); > > } > > > > I get this exception: > > > > [24 Mar 2005 16:42:46,806] ERROR <org.apache.myfaces.el.ValueBindingImpl -> > > ValueBindingImpl.java:457> [Thread-17] - > > Cannot get value for expression '#{treeBacker.treeData}' > > javax.faces.el.ReferenceSyntaxException: Cannot convert index to int for base > > com.gsk.scmm.vis.test.TreeBacker and index treeData > > at org.apache.myfaces.el.ELParserHelper.coerceToIntegerWrapper > > (ELParserHelper.java:418) > > at org.apache.myfaces.el.ELParserHelper.toIndex(ELParserHelper.java:440) > > at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate > > (ELParserHelper.java:541) > > at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145) > > at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:441) > > at org.apache.myfaces.custom.tree2.UITreeData.getValue(UITreeData.java:229) > > at org.apache.myfaces.custom.tree2.HtmlTreeRenderer.encodeChildren > > (HtmlTreeRenderer.java:160) > > at javax.faces.component.UIComponentBase.encodeChildren > > (UIComponentBase.java:320) > > > > Can there be a way to say 'There are no items', i.e. a custom message instead? > > > > -- > > Rob > > > > @objectsource.org > > > >
