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https://issues.apache.org/jira/browse/MYFACES-4585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17697039#comment-17697039
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Thomas Andraschko edited comment on MYFACES-4585 at 3/6/23 4:54 PM:
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TBH checking that issue would cost me some hours, not sure if i will invest
this.
When AutoComplete#getItemLabel is called, #{converter} resolves to null, thats
the problem.
Just put a breakpoint there and watch
"jakarta.faces.context.FacesContext.getCurrentInstance().getApplication().evaluateExpressionGet(jakarta.faces.context.FacesContext.getCurrentInstance(),
"#{converter}", Object.class)"
it seems to work fine when you remove in components/panel.xhtml the tst:panel
wrapper.
Seems the whole expression is lost, not just the type.
If you can debug further, i can assist.
was (Author: tandraschko):
TBH checking that issue would cost me some hours, not sure if i will invest
this.
When AutoComplete#getItemLabel is called, #{converter} resolves to null, thats
the problem.
Just put a breakpoint there and watch
"jakarta.faces.context.FacesContext.getCurrentInstance().getApplication().evaluateExpressionGet(jakarta.faces.context.FacesContext.getCurrentInstance(),
"#{converter}", Object.class)"
it seems to work fine when you remove in components/panel.xhtml the tst:panel
wrapper.
Seems the whole expression is lost, now just the type.
If you can debug further, i can assist.
> EL expression error: MethodNotFoundException due to wrong type
> --------------------------------------------------------------
>
> Key: MYFACES-4585
> URL: https://issues.apache.org/jira/browse/MYFACES-4585
> Project: MyFaces Core
> Issue Type: Bug
> Components: General
> Affects Versions: 4.0.0
> Environment: primefaces-test project, jakarta branch
> Reporter: Manuel K
> Priority: Major
> Attachments: image-2023-03-06-13-26-43-151.png
>
>
> When an object is passed through several layers of components, the type
> somehow gets lost and the expression evaluation uses the wrong type for a
> method call.
> Taglib component, where converter is of type
> {_}java.faces.convert.Converter{_}:
> {code:java}
> <?xml version="1.0" encoding="UTF-8"?>
> <ui:composition xmlns="http://www.w3.org/1999/xhtml";
> xmlns:ui="http://xmlns.jcp.org/jsf/facelets";
> xmlns:p="http://primefaces.org/ui";
> xmlns:o="http://omnifaces.org/ui";>
> <!--@elvariable id="value" type="java.lang.Object"-->
> <!--@elvariable id="converter" type="java.faces.convert.Converter"-->
> <!--@elvariable id="readonly" type="java.lang.Boolean"-->
> <!--@elvariable id="readonlyValue" type="java.lang.String"-->
> <o:tagAttribute name="value"
> default=""/>
> <o:tagAttribute name="converter"
> default=""/>
> <div>
> <p:autoComplete id="input"
> value="#{value}"
> var="item"
> converter="#{converter}"
> completeMethod="#{converter.suggest}"
> itemValue="#{item}"
> itemLabel="#{converter.getDisplayValue(item)}">
> <ui:insert name="autoCompleteChildren"/>
> </p:autoComplete>
> </div>
> </ui:composition>
> {code}
> The method call somehow assumes a String, so the following exception is
> thrown:
> {code:java}
> jakarta.el.MethodNotFoundException: Method not found: class
> java.lang.String.getDisplayValue(java.lang.String) {code}
> I have created a reproducer here:
> [https://github.com/mkomko/primefaces-test/tree/expression-error-method-not-found]
> The AutoComplete component should work and render results as follows:
> !image-2023-03-06-13-26-43-151.png!
> It works using
> {code:java}
> mvn clean jetty:run -Pmojarra40{code}
> but not using
> {code:java}
> mvn clean jetty:run -Pmyfaces40{code}
> Thank you very much in advance for taking a look!
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