[richfaces-issues] [JBoss JIRA] Issue Comment Edited: (RF-11102) NullPointerException in rich:tree node selection

NullPointerException in rich:tree node selection ------------------------------------------------ Key: RF-11102 URL: https://issues.jboss.org/browse/RF-11102 Project: RichFaces Issue Type: Bug Security Level: Public(Everyone can see) Components: component-tree Affects Versions: 4.0.0.Final Reporter: u j In a tree selection listener method I update the tree itself and get a nullpointerexception afterwards: {code} 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] ... {code} 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. 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: {code} <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> {code}