[richfaces-issues] [JBoss JIRA] Commented: (RF-7524) rich:columns throws Exception when value is null

[Leonid Sokolin (JIRA)]

    [ https://jira.jboss.org/jira/browse/RF-7524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12478700#action_12478700 ] 

Leonid Sokolin commented on RF-7524:
------------------------------------

What could be done, if the value is null, when the table is shown the first time?

It would be populated only after user clicks the button to get some data.

> rich:columns throws Exception when value is null
> ------------------------------------------------
>
>                 Key: RF-7524
>                 URL: https://jira.jboss.org/jira/browse/RF-7524
>             Project: RichFaces
>          Issue Type: Bug
>          Components: component-tables
>    Affects Versions: 3.3.1
>         Environment: Windows Vista, Java 6, JBoss 4.2.2.GA, JBoss Seam 2.1.1.GA
>            Reporter: Markus Merder
>            Assignee: Nick Belaevski
>            Priority: Trivial
>             Fix For: Future
>
>
> Since Richfaces Version 3.3.1.GA an exception is thrown, when value of rich:columns is null. 
> For example:
> <rich:columns value="#{someList[0].years}" var="year" index="index" rendered="#{not empty someList[0].years}">...</rich:columns>
> throws: 
> javax.servlet.jsp.JspTagException: FOREACH_BAD_ITEMS
> 	at org.richfaces.iterator.SimpleForEachIterator.toForEachIterator(SimpleForEachIterator.java:135)
> 	at org.richfaces.iterator.SimpleForEachIterator.supportedTypeForEachIterator(SimpleForEachIterator.java:98)
> 	at org.richfaces.taglib.ColumnsHandler.prepare(ColumnsHandler.java:304)
> 	at org.richfaces.taglib.ColumnsHandler.apply(ColumnsHandler.java:489)
> 	at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
>         ....
> because supportedTypeForEachIterator(Object o) in SimpleForEachIterator is called with null.

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