NullPointerException in rich:tree node selection
In a tree selection listener method I update the tree itself and get a nullpointerexception afterwards:
18:43:37,156 SEVERE [org.richfaces.log.Context] null: java.lang.NullPointerException
at org.richfaces.model.ClassicTreeNodeDataModelImpl.setupChildContext(ClassicTreeNodeDataModelImpl.java:49) [:4.0.0-SNAPSHOT]
at org.richfaces.model.ClassicTreeNodeDataModelImpl.setupChildContext(ClassicTreeNodeDataModelImpl.java:35) [:4.0.0-SNAPSHOT]
at org.richfaces.model.NodesTreeSequenceKeyModel.setupKey(NodesTreeSequenceKeyModel.java:47) [:4.0.0-SNAPSHOT]
at org.richfaces.model.TreeSequenceKeyModel.setRowKey(TreeSequenceKeyModel.java:49) [:4.0.0-SNAPSHOT]
at org.richfaces.component.UIDataAdaptor.setRowKey(UIDataAdaptor.java:277) [:]
at org.richfaces.renderkit.TreeRendererBase.encodeSelectionStateInput(TreeRendererBase.java:131) [:4.0.0-SNAPSHOT]
at org.richfaces.renderkit.html.TreeRenderer.encodeEnd(TreeRenderer.java:145) [:4.0.0-SNAPSHOT]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) [:2.1.1-FCS]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1763) [:2.1.1-FCS]
at org.richfaces.context.ExtendedPartialViewContextImpl$RenderVisitCallback.visit(ExtendedPartialViewContextImpl.java:514) [:4.0.0-SNAPSHOT]
at org.richfaces.context.BaseExtendedVisitContext.invokeVisitCallback(BaseExtendedVisitContext.java:337) [:4.0.0-SNAPSHOT]
at org.richfaces.component.UIDataAdaptor.visitTree(UIDataAdaptor.java:1235) [:]
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) [:2.1.1-FCS]
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) [:2.1.1-FCS]
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) [:2.1.1-FCS]
at javax.faces.component.UIForm.visitTree(UIForm.java:335) [:2.1.1-FCS]
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) [:2.1.1-FCS]
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) [:2.1.1-FCS]
...
The problem seems to occur when a node is selected which is not present in the new tree.
But the implementation should be so robust that there is no exception.
Is this a bug? Is it not possible to modify the tree in a tree selection listener?
I do not reassign the bound root node object, instead I remove all child nodes and add the new nodes to the root.
The tree definition is:
<rich:tree value="#{searchBean.suggestTree}" var="node" id="treeSuggest"
nodeClass="com.myapp.web.tree.EstabSuggestTreeNode"
nodeType="#{node.type}" selectionType="ajax"
toggleType="client" render="treeSuggest,detail"
selectionChangeListener="#{searchBean.treeSuggestSelectionChanged}">
<rich:treeNode type="neighborhood">
<h:outputText value="#{node.name}" />
</rich:treeNode>
<rich:treeNode type="estab" >
<h:outputText value="#{node.name}" />
</rich:treeNode>
</rich:tree>
RichFaces 4.0.0.
Thanks