Manuel K created MYFACES-4585:
---------------------------------
Summary: 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
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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