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http://issues.apache.org/jira/browse/BEEHIVE-1070?page=comments#action_12377608
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Eddie O'Neil commented on BEEHIVE-1070:
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Krista -- after looking at this, I think that the documentation is incorrect.
This tag's "expression" attribute should resolve to a NetUI expression because
it's specified in the tag as:
<netui:bindingUpdateErrors expression="actionForm.foo"/>
or because the container executes a JSP 2.0 expression whose value is a NetUI
expression:
<% pageContext.setAttribute("theexpression", "actionForm.foo");%>
<netui:bindingUpdateErrors expression="${theexpression}"/>
The exception is caused because the "expression" attribute requires a value.
Iroincally, I think that the real bug is that the <bindingUpdateErrors> tag
should have runtime expressions disabled. I'll make both of these changes --
disabling runtime expressions and the documentation fix.
> bindingUpdateErrors expression="${aValue}" always returns tag error
> -------------------------------------------------------------------
>
> Key: BEEHIVE-1070
> URL: http://issues.apache.org/jira/browse/BEEHIVE-1070
> Project: Beehive
> Type: Bug
> Components: NetUI
> Versions: 1.0.1
> Reporter: Krista Baker
> Fix For: v.next
>
> As listed in the JSP tag documentation, the following tag will always produce
> a tag error
> <netui:bindingUpdateErrors expression="${actionForm.firstName}"/>
> with a message of: Attribute 'expression' is required to have a value. The
> value "" is illegal. This is often caused by binding to an object with a null
> value.
> If the above expression="${actionForm.firstName}" is changed to
> "actionForm.firstName", the expected behavior will be observed.
> The netui test of coretags/binding/nullbinding is an example of this where
> the error is seen only because the expression="${ }".
> From this index.jsp:
> <li><netui:bindingUpdateErrors expression="${pageFlow.nullValue}" /> --
> Binding Errors</li>
> Even though the value remains null, if the expression is changed to the
> following,
> <li><netui:bindingUpdateErrors expression="pageFlow.nullValue" /> --
> Binding Errors</li>
> the error will not occur even though the pageFlow value is still null.
> There are three netui testRecorder tests that use this element and attribute
> combination:
> coretags/binding/nullbinding - uses expression="${}"
> coretags/binding/report - uses expression=""
> tags/bindingUpdateErrors - uses expression=""
> I am not sure if the example in the docs
> (http://beehive.apache.org/docs/1.0.1/netui/apidocs/taglib/beehive.apache.org/netui/tags-html-1.0/bindingUpdateErrors.html)
> and the nullbinding test are incorrect or if it is the other way around that
> the other two tests, even though currently producing expected results, are
> wrong.
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