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https://issues.apache.org/jira/browse/WW-3010?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksandr Mashchenko resolved WW-3010.
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Resolution: Fixed
Fixed in WW-4312
> s:iterator fails to iterate over collections containing null
> ------------------------------------------------------------
>
> Key: WW-3010
> URL: https://issues.apache.org/jira/browse/WW-3010
> Project: Struts 2
> Issue Type: Bug
> Affects Versions: 2.0.14
> Environment: any
> Reporter: Daniel Baldes
> Fix For: 2.5
>
>
> When using the struts2 taglib's iterator tag to iterate over a collection
> which contains nulls, the current value ("id") is not set to null, but to the
> value it had in the last iteration before. This behaviour is explicitly coded
> without any obvious reason. See IteratorComponent.java from line 219:
> {code:java}
> if ((id != null) && (currentValue != null)) {
> //pageContext.setAttribute(id, currentValue);
> //pageContext.setAttribute(id, currentValue,
> PageContext.REQUEST_SCOPE);
> stack.getContext().put(id, currentValue);
> }
> {code}
> Expected behaviour: just iterate over the null values as a plain java
> iterator would.
> If nulls are forbidden for some important reason, it should throw an
> execption, but not return a wrong value.
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