[MYFACES-1670] A dollar-type, 2 level EL expression evaluates to null

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.1-SNAPSHOT
• Fix Version/s: 1.2.0-SNAPSHOT, 1.2.2
• Component/s: JSR-252
• Environment: geronimo-2.0-M6-rc1
• Assignee: Martin Marinschek
• Reporter: Alexander Zynevich
• Created: 24/Jun/07 14:05
• Updated: 21/Jan/08 22:36
• Resolved: 12/Aug/07 13:09

Description

I have a simple code where dollar-type expression (like ${}) works differently than shrap-type expression (like #{}),
I put into the http session a managed bean aggregating another bean.
${parent} is calculated, while ${parent.child} is always null (it is printed as an empty string and equals to null in "when" tag).

For example the following snip of JSP code:
<f:view>
<h:form id="myform" >
<b>Using sharp-el</b>: <br/>
*<h:outputText id="cll1" value="#

{customerDetailsBean}

" />*<br/>
*<h:outputText id="cll2" value="#

{customerDetailsBean.customer}

" />*<br/>
<b>Using dollar-el</b>: <br/>
${customerDetailsBean}<br/>
${customerDetailsBean.customer}<br/>
<b>Classical "servlet" style</b>: <br/>
*<% if (session.getAttribute("customerDetailsBean") != null)

{%><%= session.getAttribute("customerDetailsBean") %><% }

%>*<br/>
*<% if (session.getAttribute("customerDetailsBean") != null)

{%><%= ((eltest.CustomerDetailsBean)session.getAttribute("customerDetailsBean")).getCustomer() %><% }

%>*<br/>
</h:form>
</f:view>

– PRODUCES --:

Using sharp-el:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
*Customer

{frstName: Alex , lastName: Zynevich, id: 1979}

*
Using dollar-el:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
**
Classical "servlet" style:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
*Customer

{frstName: Alex , lastName: Zynevich, id: 1979}

*

while I would expect:

Using sharp-el:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
*Customer

{frstName: Alex , lastName: Zynevich, id: 1979}

*
Using dollar-el:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
*Customer

{frstName: Alex , lastName: Zynevich, id: 1979}

*
Classical "servlet" style:
CustomerDetailsBean: { customer: Customer {frstName: Alex , lastName: Zynevich, id: 1979}}
*Customer

{frstName: Alex , lastName: Zynevich, id: 1979}

*

you may find the maven project at https://issues.apache.org/jira/browse/GERONIMO-3253, war is attached

Issue Links

• is duplicated by: GERONIMO-3253 Сalculation of ${} EL expression of second level, like ${a.b} cause null value