user Digest 14 Mar 2008 19:20:51 -0000 Issue 7927

Topics (messages 184254 through 184283):

Question regarding OGNL
 184254 by: Thomas Ramapuram
 184262 by: Rushikesh Thakkar
 184277 by: Laurie Harper
 184282 by: Dave Newton

Re: Getting error in using tag library : The Tag class 'org.apache.struts.taglib.html.FormTag' has no setter method corresponding to TLD declared attribute 'acceptCharset', (JSP 1.1 spec, 5.4.1)
 184255 by: Antonio Petrelli

Re: struts wml
 184256 by: Antonio Petrelli
 184257 by: Al Sutton
 184270 by: Laurie Harper

Re: Multiple Actions for a single page. Is this possible
 184258 by: Ralf Fischer
 184259 by: Bently Drake
 184278 by: matt.payne

Issue In Autocompleter
 184260 by: Ankur Agar
 184281 by: Laurie Harper

Codebehind + zero config options
 184261 by: Alex Shneyderman

Struts2 - Validating several fields depending on values of other fields
 184263 by: Dirk Schumacher
 184264 by: Dave Newton
 184283 by: Laurie Harper

Re: Problem assiging elements in to list
 184265 by: Cesar Arevalo
 184266 by: Dave Newton
 184267 by: Cesar Arevalo
 184268 by: Dave Newton
 184269 by: Dave Newton

Re: Latest Quickstart & Sitemesh
 184271 by: Laurie Harper

[S2] DEBUG NPE
 184272 by: Hoying, Ken

should I learn struts 1 first before learning struts 2?
 184273 by: akoo
 184274 by: Antonio Petrelli
 184275 by: Musachy Barroso
 184276 by: matt.payne

[OT] Re: should I learn struts 1 first before learning struts 2?
 184279 by: Antonio Petrelli

Re: Best practices to reduce execution time in struts
 184280 by: matt.payne

Administrivia:

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AFAIK you can use OGNL expression in any attribute of your struts2 tag.
Your problem could be 'what is the proper syntax for using OGNL
expression?'.
Can you post your relevant code? I might get an idea of what you are trying
to achieve.

-Rushikesh

On Fri, Mar 14, 2008 at 7:29 AM, Thomas Ramapuram <
thomas.ramapuram@(protected):

> Hi,
> I have query regarding OGNL Expression.
> Can the "#name" kind of expression be used anywhere? Or are they
> applicable only in certain attributes of struts tags
>
> Till now I was using the %{name} expression and that too in the some
> attribute of a tag
>
> I tried using #name expression but it does not work. Is there any
> settings to be set (for example in web.xml)
> Any pointers would be a great help.
> Thanks
> Thomas
>
>
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>
>

2008/3/14, kannan_307 <kannan.kalirajan@(protected)>:
>
>
> I am using the struts version 1.2.4



It was a bug that seems to be fixed:
https://issues.apache.org/struts/browse/STR-1636
It is fixed in "1.2 Family": I checked and it is fixed in Struts 1.2.9.
I suggest you to upgrade to Struts 1.2.9 or, better, to 1.3.8.

Ciao
Antonio

2008/3/13, CarloSilva <silva@(protected)>:
>
> Laurie Harper, email-me please. I think I have help to you.
> An emabrace



WTF?

Hi,

Action class gets populated when you invoke them by clicking on any button or link or anywhere....
if you invoke the class a by clicking on a.jsp and same with b,
and when you include then into c.jsp
they will work as usual no change requires!!

please correct me if I didnt get your question,

Warm Regards,



----- Original Message ----
From: Ralf Fischer <themakii@(protected)>
To: Struts Users Mailing List <user@(protected)>
Sent: Friday, March 14, 2008 2:41:52 PM
Subject: Re: Multiple Actions for a single page. Is this possible

Hi,

On 3/14/08, ravi_eze <ravichandrac@(protected):
> We have two pages a.jsp and b.jsp developed with the action class mehods
> Ac.a() & Ac.b() that render these pages. Now we need to develop a new page
> c.jsp which is combination of both a & b.jsps.
>
> i can include the jsps into the c.jsp. But what abt the action class behind?
> can they not get automatically invoked and the pages get populated? More
> over i have some logic to be performed based on the inputs made in the two
> sections of c.jsp. Is it possible for me to only do this part as a layer?
>
> any ideas as how to go abt this? pl help.

Check out the <s:action /> tag, when c.jsp is rendered you can place
actions on it. All the stuff including interceptors will be invoked
for each action by creating a new action proxy. Don't forget to set
executeResult="true" so the output gets' rendered.

The surrounding action (if c.jsp is an action result) will still be on
the stack.

Cheers,
-Ralf

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HI Vamsi,

by the time you get to the for loop I don't see the list initialized, unless you are doing this from your jsp I don't think it will work as how you have it, a better way would be with a normal for like this :

       for (int index = 0; index < someLimit; index++) {
         Person person = new Person();
         persons.add(index, person);
          _logger.error("Person ::::::::::::::::::::::::::" + person);
         
          e.persist(person);
       }

hope this helps.

Cesar

----- Original Message ----
From: Vamsi Gmail! <vamseemandava@(protected)>
To: Struts Users Mailing List <user@(protected)>
Sent: Thursday, March 13, 2008 11:14:53 PM
Subject: Problem assiging elements in to list

Hi all,

     I have a requirement where I need to assign a Objects to a list.
I tried the example given in showcase there is working (in the site).
But It is not assigning to that list

I am also attaching code for your refernce.

---Vamsi


-----Inline Attachment Follows-----

/*
* $Id: PersonAction.java 471756 2006-11-06 15:01:43Z husted $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0

*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package test.actions;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.persistence.PersistenceUnit;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.exception.ConstraintViolationException;

import test.examples.Person;

import com.opensymphony.xwork2.ActionSupport;

 
@SuppressWarnings("serial")

public class PersonAction extends ActionSupport {

  //private Person person;
  private List persons = new ArrayList();
 
  private Log _logger = LogFactory.getLog(PersonAction.class);
 
 
 
 
  public List getPersons() {
    return persons;
  }

  public void setPersons(List persons) {
    this.persons = persons;
  }

  @SuppressWarnings("unchecked")
 
  public String save() {
    EntityManager e = SfmsEntityManagerFactory.getEntityManager();
    EntityTransaction txn =e.getTransaction();
    txn.begin();
    try{
       _logger.error("Person ::::::::::::::::::::::::::");
       _logger.error("Person ::::::::::::::::::::::::::");
       for (Object object :persons) {
          Person person = (Person) object;
          _logger.error("Person ::::::::::::::::::::::::::" + person);
         
          e.persist(person);
       }
       _logger.error("Person ::::::::::::::::::::::::::");
       _logger.error("Person ::::::::::::::::::::::::::");
       txn.commit();
       addActionMessage("Record Added");
       read(e);
    }catch(ConstraintViolationException e1) {
       addActionError("Record Already There");
    }catch(IllegalStateException e1){
               
    }catch(Exception e1) {
       addActionError("Error Inserting");
       txn.rollback();
    }
   
    return SUCCESS;
  }
 
  private void read(EntityManager e) {          
    persons = e.createQuery("From Person").getResultList();
 
  }





 

}


-----Inline Attachment Follows-----

package test.examples;

import static javax.persistence.FetchType.LAZY;

import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class Person implements Persister{

 
  @Id
  private String name;  
 
  @Basic(fetch=LAZY)
  private int age;

  public String getName() {
    return name;
  }

  public int getAge() {
    return age;
  }

  public void setName(String name) {
    this.name = name;
  }

  public void setAge(int age) {
    this.age = age;
  }
 
  @Override
  public String toString() {
 
    return name + "::::" + age;
  }
 
}

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Just out of curiosity, when you say "All of this is done automatically by the framework" do you mean if you populate from a form? or how do you mean the framework does this automatically?

Cesar

----- Original Message ----
From: Dave Newton <newton.dave@(protected)>
To: Struts Users Mailing List <user@(protected)>
Sent: Friday, March 14, 2008 10:27:19 AM
Subject: Re: Problem assiging elements in to list

--- Cesar Arevalo <cesararevalo@(protected):
> by the time you get to the for loop I don't see the list initialized,
> unless you are doing this from your jsp I don't think it will work as how
> you have it, a better way would be with a normal for like this :
>
>         for (int index = 0; index < someLimit; index++) {
>           Person person = new Person();
>           persons.add(index, person);
>           _logger.error("Person ::::::::::::::::::::::::::" +
> person);
>          
>           e.persist(person);
>         }
>
> hope this helps.

That would create a list of empty Person instances (then persist the last
empty Person, but I'm assuming that's a typo).

All of this is done automatically by the framework.

> From: Vamsi Gmail! <vamseemandava@(protected)>
>
>       I have a requirement where I need to assign a Objects to a list.
> I tried the example given in showcase there is working (in the site).
> But It is not assigning to that list
>
> I am also attaching code for your reference.
>
> [code]

You never really state how you're expecting the list to be filled: is this
from a form with multiple Person form fields, or...?

Dave


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I have created a template which utilizes parameters that are passed into
it to generate HTML conditionally based on those parameters. For
example:

 <s:component theme="scaTheme" templateDir="template"
template="Header.jsp">
   <s:param name="titleKey"
value="%{'title.appNpc'}" />
   <s:param name="helpPage"
value="%{'Non_Premier_Contract_Home_Page.htm'}" />
 </s:component>

However, I do not wish to require that all the parameters be required.
For example, it would be ok if the "helpPage" parameter was not
specified. At runtime, everything works fine if I do not specify the
"helpPage" parameter. However if I place my logging level at DEBUG, I
my log is cluttered with NPEs like the one below. I cannot seem to find
any kind of syntax to reference the parameter to even test if it is null
without generating this NPE in DEBUG. Does anyone know if it is
possible to avoid these NPEs? I make heavy use of templates with
optional parameters and it is really cluttering up the logs when trying
to debug. Am I doing something wrong? Should this maybe be readdressed
in the Struts code base? I understand why the DEBUG statement is
logged. Just not sure since it is a DEBUG statement, if the stack trace
is warranted.

Thanks in advance!


2008-03-14 14:30:14,364 DEBUG (http-127.0.0.1-8080-2:)
[com.opensymphony.xwork2.util.DefaultObjectTypeDeterminer] Error while
retrieving generic property class for property=parameters
java.lang.NullPointerException
 at
com.opensymphony.xwork2.util.GenericsObjectTypeDeterminer.getClass(Gener
icsObjectTypeDeterminer.java:222)
 at
com.opensymphony.xwork2.util.GenericsObjectTypeDeterminer.getKeyClass(Ge
nericsObjectTypeDeterminer.java:44)
 at
com.opensymphony.xwork2.util.XWorkMapPropertyAccessor.getKey(XWorkMapPro
pertyAccessor.java:136)
 at
com.opensymphony.xwork2.util.XWorkMapPropertyAccessor.getProperty(XWorkM
apPropertyAccessor.java:68)
 at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1643)
 at ognl.ASTProperty.getValueBody(ASTProperty.java:92)
 at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
 at ognl.SimpleNode.getValue(SimpleNode.java:210)
 at ognl.ASTChain.getValueBody(ASTChain.java:109)
 at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
 at ognl.SimpleNode.getValue(SimpleNode.java:210)
 at ognl.ASTNotEq.getValueBody(ASTNotEq.java:49)
 at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
 at ognl.SimpleNode.getValue(SimpleNode.java:210)
 at ognl.ASTAnd.getValueBody(ASTAnd.java:56)
 at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
 at ognl.SimpleNode.getValue(SimpleNode.java:210)
 at ognl.Ognl.getValue(Ognl.java:333)
 at
com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
 at
com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.jav
a:238)
 at
org.apache.struts2.components.Component.findValue (Component.java:322)
 at org.apache.struts2.components.If.start (If.java:85)
 at
org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTag
Support.java:54)
 at
org.apache.jsp.template.scaTheme.Header_jsp._jspx_meth_s_005fif_005f0(He
ader_jsp.java:273)



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