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From "Andrew Kharchenko (JIRA)" <...@myfaces.apache.org>
Subject [jira] Commented: (MYFACES-985) UIData with multihierarchical children inside produces NPE
Date Thu, 05 Jan 2006 11:57:04 GMT
    [ http://issues.apache.org/jira/browse/MYFACES-985?page=comments#action_12361838 ] 

Andrew Kharchenko  commented on MYFACES-985:
--------------------------------------------

As I said, I've replaced this part of code in renderer:


    for (Iterator iterator = children.iterator(); iterator.hasNext();) {
      UIComponent child = (UIComponent) iterator.next();
      if (child instanceof UIInputTestComponent) {
        children.remove(child);
        break;
      }
    }
      UIInputTestComponent itc = (UIInputTestComponent) context.getApplication().createComponent(UIInputTestComponent.COMPONENT_TYPE);
      itc.setId(component.getId() + "_____id");
      itc.setNeedChildren(false);
      children.add(itc);


with this one: 



    boolean isPresent = false;
    for (Iterator iterator = children.iterator(); iterator.hasNext();) {
      UIComponent child = (UIComponent) iterator.next();
      if (child instanceof UIInputTestComponent) {
        isPresent = true;
        break;
      }
    }
    if (!isPresent) {
      UIInputTestComponent itc = (UIInputTestComponent) context.getApplication().createComponent(UIInputTestComponent.COMPONENT_TYPE);
      itc.setId(component.getId() + "_____id");
      itc.setNeedChildren(false);
      children.add(itc);
    }


but it still has the same effect :(


> 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.

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