Jay Sartoris created MYFACES-3986:
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Summary: viewScope implicit object not resolved in a JSP page
Key: MYFACES-3986
URL: https://issues.apache.org/jira/browse/MYFACES-3986
Project: MyFaces Core
Issue Type: Bug
Components: JSR-344
Affects Versions: 2.2.8
Reporter: Jay Sartoris
Consider this scenario:
A JSP file has the following contents:
=============
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml";
xmlns:h="http://java.sun.com/jsf/html";
xmlns:f="http://xmlns.jcp.org/jsf/core";
xmlns:c="http://xmlns.jcp.org/jsp/jstl/core"; >
<body>
<f:view>
<h:form id="form1">
<c:set target="${viewScope}" property="test" value="testValue2" />
<h:outputText id="foo1" value="#{viewScope.test}" />
</h:form>
</f:view>
</body>
</html>
============
When requested (with the faces mapping), it fails with this exception:
javax.servlet.jsp.JspTagException:
at
org.apache.taglibs.standard.tag.common.core.SetSupport.doEndTag(SetSupport.java:195)
at [internal classes]
The reason for that exception is because the target attribute with a value of
"viewScope" of the c:set tag was resolved to null.
The Problem:
-----------
I think the issue here is that the wrong FacesCompositeELResolver is used while
processing the tags. From my debugging, I see that there are two
FacesCompositeELResolvers created in this scenario and also what is mentioned
in the JSF 2.2 spec, section 5.6. One with JSP scope and one with Faces scope.
The ImplicitElResolvers created in each of these scopes is different as
detailed in the spec.
The problem I see is that when processing the tags, the Faces scoped
ELResolvers are created, but not used when processing the c:set tag to resolve
the viewScope implicit map. When processing this tag, it will use the JSP
scoped resolvers and therefore cannot resolve the viewScope and throws the
exception mentioned above because the
org.apache.myfaces.el.unified.resolver.implicitobject.ViewScopeImplicitObject
is never called as it is only associated with a Faces scoped
ImplicitObjectResolver.
Even though this is a JSP file, shouldn't the Faces scoped resolvers be used
when this is a JSF file?
This same scenario works on Mojarra 2.2.10 with Tomcat 8.0.15, but fails when
using MyFaces.
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