[jbosstools-issues] [JBoss JIRA] Commented: (JBIDE-4512) "var cannot be resolved" does not recognize single value

[Julien Kronegg (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBIDE-4512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12472934#action_12472934 ] 

Julien Kronegg commented on JBIDE-4512:
---------------------------------------

For projects generated by seam-gen of Seam 2.1.2.GA (CRUD application), the *.FTL attached files implement the workaround described above (i.e. wrapping the single value to a List).
Look for the "JBIDE-4512" string for the changed content.
These files are in SEAM_HOME/seam-gen/src  and SEAM_HOME/seam-gen/view

Effect: no more anonying "property cannot be resolved" in seam-gen XHTML generated files, but the Seam Validator still process process all of them!

> "var cannot be resolved" does not recognize single value
> --------------------------------------------------------
>
>                 Key: JBIDE-4512
>                 URL: https://jira.jboss.org/jira/browse/JBIDE-4512
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: jsp/jsf/xml source editing
>    Affects Versions: 3.0.0.GA
>         Environment: JBossTools-ALL-win32-3.0.1.GA-R200905070146-H18, Seam 2.1.1.GA
>            Reporter: Julien Kronegg
>            Assignee: Alexey Kazakov
>             Fix For: 3.1.0.M3
>
>         Attachments: edit.xhtml.ftl, EntityHome.java.ftl, MyBean.java, singleValuedVarCannotBeResolved.png, view.xhtml.ftl
>
>
> Jboss Tools does not recognize correctly the "var" property in list iterators (e.g. rich:dataTable, h:dataTable) if the "value" property is a single value (but works if the "value" property is a List.
> This problem occurs for XHTML pages generated by seam-gen where the value is "#{myEntityHome.instance.singleValue}" (see https://jira.jboss.org/jira/browse/JBIDE-4048).
> Effects:
> 1. add a lot of warnings "variableName cannot be resolved" that should be there
> 2. makes "Seam Validator" task to be very slow when there is a lot of pages (because the Seam Validator task is run on each XHTML file with at least one unresolved EL, see https://jira.jboss.org/jira/browse/JBIDE-3336)
> Expected:
> As the rich:dataTable displays one row when the "value" property is a single value and not a list, Jboss Tools is expected to recognize list AND single value.
> How to reproduce:
> EXECUTE: Create seam project.
> EXECUTE: Create MyBean component (see attached java file)
> EXECUTE: Open home.xhtml
> EXECUTE: Add:
> 	<h:dataTable var="myVar" value="#{myBean.values}">
>             <h:column><h:outputText value="#{myVar.myProperty}"/></h:column>
>         </h:dataTable>
> 		<h:dataTable var="myVar" value="#{myBean.singleValue}">
>             <h:column><h:outputText value="#{myVar.myProperty}"/></h:column>
>         </h:dataTable>
> 		<h:dataTable var="myVar" value="#{myBean.singleValueAsList}">
>             <h:column><h:outputText value="#{myVar.myProperty}"/></h:column>
>         </h:dataTable>
> ASSERT: no warning "myVar cannot be resolved" appear
> Workaround:
> Use a "value" property as List and not as single value (maybe wrapping the single value to a List should do the trick).

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