[ http://issues.apache.org/jira/browse/MYFACES-985?page=comments#action_12361840 ]
Mathias Broekelmann commented on MYFACES-985: --------------------------------------------- You are still modifing the component tree while rendering. Why donĀ“t you add your component in the the base component when it is created? > UIData with multihierarchical children inside produces NPE > ---------------------------------------------------------- > > Key: MYFACES-985 > URL: http://issues.apache.org/jira/browse/MYFACES-985 > Project: MyFaces > Type: Bug > Components: Implementation > Environment: Tomcat 5.0 > JDK 1.4 > Reporter: Andrew Kharchenko > Assignee: Mathias Broekelmann > Attachments: UIData NPE Sample.rar > > I've found incorrect UIData behaviour under MyFaces which produces > NullPointerException on runtime and which works fine under Sun implementation. > Here it is: > I have a custom component which is extentor from UIInput. This component has > UIPanel extentor component as child which is added to children list of > UIInput component on rendering. > For one's turn, UIPanel extentor has one more UIInput extentor component as > child which is added to children list of UIPanel component on rendering. > This component works fine standalone, but when it is added to UIData, I have > NPE on runtime. Here is the part of listing: > java.lang.NullPointerException > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:223) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:235) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:235) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:235) > at javax.faces.component.UIData.setRowIndex(UIData.java:178) > I will also attach sample component's classes, definitions and test page if > it will be granted after issue creation. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira