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https://issues.apache.org/jira/browse/MYFACES-4529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17648808#comment-17648808
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Volodymyr Siedlecki commented on MYFACES-4529:
----------------------------------------------
I don't think it's as necessary to port this to earlier versions, but can be if
requested.
> TCK: Spec 1422IT: Improve UISelectMany to Support Different Types within a
> Collection (Including Null)
> ------------------------------------------------------------------------------------------------------
>
> Key: MYFACES-4529
> URL: https://issues.apache.org/jira/browse/MYFACES-4529
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.3.10, 2.3-next-M7, 3.0.2, 4.0.0-RC2
> Reporter: Volodymyr Siedlecki
> Assignee: Volodymyr Siedlecki
> Priority: Major
> Fix For: 4.0.0-RC3
>
>
> Original Spec Issue:
> https://github.com/javaee/javaserverfaces-spec/issues/1422 (Note: BalusC
> mentions MyFaces not supporting items of different types)
> Mojarra made an improvement to support various different types within a
> collection, and it's now part of the new TCK 4.0.x TCK.
> See the Spec1422 Bean here:
> https://github.com/jakartaee/faces/blob/4.0.1/tck/faces23/uiinput/src/main/java/ee/jakarta/tck/faces/test/javaee8/uiinput/Spec1422.java#L36
>
> There are two issues with the test.
> 1) MyFaces fails here due to a NPE - first item in the collection.
> {code:java}
> Caused by: java.lang.NullPointerException
> at
> org.apache.myfaces.core.api.shared.SharedRendererUtils.getSelectItemsValueConverter(SharedRendererUtils.java:440)
> at
> org.apache.myfaces.renderkit.RendererUtils.findUISelectManyConverter(RendererUtils.java:476)
> at
> org.apache.myfaces.renderkit.html.util.HtmlRendererUtils.findUISelectManyConverterFailsafe(HtmlRendererUtils.java:512)
> at
> org.apache.myfaces.renderkit.html.util.HtmlRendererUtils.findUISelectManyConverterFailsafe(HtmlRendererUtils.java:502)
> at
> org.apache.myfaces.renderkit.html.base.HtmlCheckboxRendererBase.getConverter(HtmlCheckboxRendererBase.java:558)
> at
> org.apache.myfaces.renderkit.html.base.HtmlCheckboxRendererBase.renderCheckboxList(HtmlCheckboxRendererBase.java:166)
> at
> {code}
> 2) If the null is removed, then the asserts fail as the types are changed.
> {code:java}
> Caused by: java.lang.ClassCastException: class java.lang.Integer cannot be
> cast to class java.lang.Long (java.lang.Integer and java.lang.Long are in
> module java.base of loader 'bootstrap')
> at ee.jakarta.tck.faces.test.javaee8.uiinput.Spec1422.submit(Spec1422.java:48)
> {code}
> MyFaces updates them to Integers:
> {code:java}
> selectedNumbers ArrayList<E> (id=33727)
> elementData Object[7] (id=33741)
> [0] Integer (id=33743)
> [1] Integer (id=22115)
> [2] Integer (id=33744)
> [3] Integer (id=33745)
> [4] Integer (id=33746)
> [5] Integer (id=33747)
> [6] Integer (id=33748)
> {code}
> The spec doesn't seem to outline this as a requirement, but I think it's a
> worthwhile addition.
> https://jakarta.ee/specifications/faces/4.0/apidocs/jakarta/faces/component/uiselectmany
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