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Posted to users@myfaces.apache.org by "Kuhn, Harald" <HK...@airplus.com> on 2007/10/05 10:08:34 UTC
RE: [Trinidad] Problem mixing c:forEach and Trinidad tr:table and tr:column
Hi to all,
finally I found a solution.
The exception
java.lang.ClassNotFoundException: com.sun.facelets.tag.jstl.core.IndexedValueExpression
org.apache.myfaces.trinidadinternal.application.StateManagerImpl restoreView
SEVERE: No structure available and no root available
appears always when you have defined the context parameter
<param-name>org.apache.myfaces.trinidad.CLIENT_STATE_METHOD</param-name>
<param-value>all</param-value>
in your web.xml.
As far as you remove this parameters it works as expected.
Except for the fact that you shouldn't use inline EL expressions within the column, as this value is rendered an addtitional time for each ppr-request.
Example:
<tr:column sortable="true"
noWrap="true"
sortProperty="#{forEachColumn.spalte}"
defaultSortOrder="ascending">
<f:facet name="header">
<tr:outputText value="#{bundle[forEachColumn.ueberschrift.header]}" />
</f:facet>
#{tableRow[forEachColumn.spalte]}
<!-- this works fine !!!
<tr:outputText value="#{tableRow[forEachColumn.spalte]}" />
-->
</tr:column>
First request:
Second request (sort):
Third request (paging):
If you use <tr:outputText /> it works just fine.
I am not sure if this is a bug of MyFaces/Trinidad or the EL-implementation (of tomcat 6.0.14). I just want to share my experience.
Best regards
Harald
**************************************
Harald Kuhn
AirPlus International
Business Information Services
Phone: +49 (0) 61 02 204-821
Fax: +49 (0) 61 02 204-139
E-Mail: HKuhn@airplus.com
Internet: <http://www.airplus.com/> www.airplus.com
**************************************
Lufthansa AirPlus Servicekarten GmbH · Hans-Böckler-Straße 7 · 63263 Neu-Isenburg · Germany · Geschäftsführer: Patrick W. Diemer (Vorsitz), Lutz Logemann · Vorsitzender des Aufsichtsrates: Stephan Gemkow · Handelsregister: Amtsgericht Offenbach/Main, HRB 8119
-----Original Message-----
From: Kuhn, Harald [mailto:HKuhn@airplus.com]
Sent: Tuesday, September 25, 2007 9:07 AM
To: MyFaces Discussion
Subject: RE: [Trinidad] Problem mixing c:forEach and Trinidad tr:table and tr:column
Hi to all,
is anybody out there, who has an idea on this issue?
It is absolutely possible to reference an EL-variable (forEachColumn or forEachStatus), that is defined by c:forEach, within
the body or the header facet of tr:column.
But as soon as I reference one of these EL-variables within my EL-expression for the Attribute sortProperty the mentioned Exception is thrown.
Are there any differences in EL-resolving between tag-attributes and the body of a tag?
As I am relatively new to JSF, I want to understand, why one part works and the other won't.
For my current project it would be important to get this solution to work.
Any help would be appreciated.
Kind regards
Harald Kuhn
**************************************
Harald Kuhn
AirPlus International
Business Information Services
Phone: +49 (0) 61 02 204-821
Fax: +49 (0) 61 02 204-139
E-Mail: HKuhn@airplus.com
Internet: <http://www.airplus.com/> www.airplus.com
**************************************
Lufthansa AirPlus Servicekarten GmbH · Hans-Böckler-Straße 7 · 63263 Neu-Isenburg · Germany · Geschäftsführer: Patrick W. Diemer (Vorsitz), Lutz Logemann · Vorsitzender des Aufsichtsrates: Stephan Gemkow · Handelsregister: Amtsgericht Offenbach/Main, HRB 8119
-----Original Message-----
From: Kuhn, Harald [mailto:HKuhn@airplus.com]
Sent: Wednesday, September 19, 2007 2:30 PM
To: MyFaces Discussion
Subject: RE:[Trinidad] Problem mixing c:forEach and Trinidad tr:table and tr:column
Hi Gregg,
thanks for your reply. But this is only a typo this message as I am able to reference
#{forEachColumn.ueberschrift.header}
in the header facet and
#{tableRow[forEachColumn.spalte]}
in the body of <tr:document>.
The Exception appears as soon as I reference the "forEachColumn" within the attribute "sortProperty" like:
<tr:column sortable="true"
sortProperty="#{forEachColumn.spalte}">
So the question is. What is the difference between EL-Expression in the body (facet) of the <tr:column> Tag and EL-Expression within attribute definition?
Kind regards
Harald
**************************************
Harald Kuhn
AirPlus International
Business Information Services
Phone: +49 (0) 61 02 204-821
Fax: +49 (0) 61 02 204-139
E-Mail: HKuhn@airplus.com
Internet: <http://www.airplus.com/> www.airplus.com
**************************************
Lufthansa AirPlus Servicekarten GmbH · Hans-Böckler-Straße 7 · 63263 Neu-Isenburg · Germany · Geschäftsführer: Patrick W. Diemer (Vorsitz), Lutz Logemann · Vorsitzender des Aufsichtsrates: Stephan Gemkow · Handelsregister: Amtsgericht Offenbach/Main, HRB 8119
-----Original Message-----
From: Gregg Leichtman [mailto:gsl1@erols.com]
Sent: Wednesday, September 19, 2007 1:44 PM
To: MyFaces Discussion
Subject: Re: Problem mixing c:forEach and Trinidad tr:table and tr:column
* PGP Signed by an unknown key
If the code you are using is as you show it in the message, then appear to have a syntax error in:
<c:forEach var="forEachColumn"
varStatus="forEachStatus"
items="#dynamicTable.rowLayout.spalten}" >
You appear to be missing a leading brace and it should probably be:
<c:forEach var="forEachColumn"
varStatus="forEachStatus"
items="#{dynamicTable.rowLayout.spalten}" >
-=> Gregg <=-
Kuhn, Harald wrote:
Hi to all,
are there any ideas regarding this issue?
Best regards
Harald Kuhn
Lufthansa AirPlus Servicekarten GmbH · Hans-Böckler-Straße 7 · 63263 Neu-Isenburg · Germany · Geschäftsführer: Patrick W. Diemer (Vorsitz), Lutz Logemann · Vorsitzender des Aufsichtsrates: Stephan Gemkow · Handelsregister: Amtsgericht Offenbach/Main, HRB 8119
-----Original Message-----
From: Kuhn, Harald [mailto:HKuhn@airplus.com]
Sent: Monday, September 17, 2007 9:07 AM
To: users@myfaces.apache.org
Subject: Problem mixing c:forEach and Trinidad tr:table and tr:column
Hi to all,
I' ve some problems while trying to build a table dynamically.
We have some meta-objects (named RowLayout) that describe,
* which columns will be displayed
* which heading is used
* is the column sortable and what is the name of the sortProperty.
This approach works fine, as far as I use the EL-expressions "forEachColumn" and "forEachStatus" within the body of a tr:column tag.
But, if I try to set the attribute sortProperty with an EL-expression I get a ClassNotFoundException.
As far as I could see, the mentioned class is present in facelets.jar.
Here is the code snippet from my Facelet:
<!-- OK
<tr:column sortable="true"
sortProperty="kategorie">
NOT OK:
<tr:column sortable="true"
sortProperty="#{forEachColumn.spalte}">
java.lang.ClassNotFoundException: com.sun.facelets.tag.jstl.core.IndexedValueExpression
org.apache.myfaces.trinidadinternal.application.StateManagerImpl restoreView
SEVERE: No structure available and no root available
org.apache.myfaces.trinidadinternal.config.xmlHttp.XmlHttpConfigurator handleError
SEVERE: Server Exception during PPR, #19
java.lang.NullPointerException
-->
<tr:table value="#{dynamicTable.data}"
var="tableRow"
varStatus="tableStatus"
rowBandingInterval="1"
rows="5"
noWrap="true"
sortable="true">
<c:forEach var="forEachColumn"
varStatus="forEachStatus"
items="#dynamicTable.rowLayout.spalten}" >
<tr:column sortable="true"
noWrap="true"
sortProperty="kategorie"
defaultSortOrder="ascending">
<f:facet name="header">
#{forEachColumn.ueberschrift.header} <br />
</f:facet>
#{tableRow[forEachColumn.spalte]}
</tr:column>
</c:forEach>
</tr:table>
Everything works fine, if sortProperty is a literal (and no EL-expression).
With an EL-expression instead, I get an ClassNotFoundException followed by a NullPointerException.
Our environment is:
myFaces 1.2.1-SNAPSHOT
trinidad 1.2.2
facelets 1.1.13
My question now is:
Why can I use EL-expression within the body of tr:column, but not to set an attribute of tr:column?
Thanks for your help.
Harald Kuhn
Lufthansa AirPlus Servicekarten GmbH · Hans-Böckler-Straße 7 · 63263 Neu-Isenburg · Germany · Geschäftsführer: Patrick W. Diemer (Vorsitz), Lutz Logemann · Vorsitzender des Aufsichtsrates: Stephan Gemkow · Handelsregister: Amtsgericht Offenbach/Main, HRB 8119
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* 0xD6F20367