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https://issues.apache.org/jira/browse/OFBIZ-4393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13137709#comment-13137709
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Anne Jessel commented on OFBIZ-4393:
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The point is that the code quoted by Leon will never be executed, because
'value' will never be null. If value is absent in the xml, then it is read as
an empty string. value is intialised using org.w3c.dom.Element.getAttribute()
which never returns null, according to the documentation.
> View entity condition-expr doesn't handle null
> ----------------------------------------------
>
> Key: OFBIZ-4393
> URL: https://issues.apache.org/jira/browse/OFBIZ-4393
> Project: OFBiz
> Issue Type: Bug
> Components: framework
> Affects Versions: SVN trunk
> Environment: Rev 1165137
> Reporter: Anne Jessel
> Attachments: OFBIZ-4393-view-entity_condition-expr_null.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> condition-expr tag in view-entity can't be used to compare a field with null.
> An absent value attribute is read as an empty string, and the code currently
> checks for value being null to know when to compare against null.
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