Re: Design question - Action Form vs Business Delegates/Value Objects

[Dmitri Colebatch]

see my other email.  I understand the jsp side of it, I want to know how
the actionservlet deals with it.

cheesr
dim

On Fri, 23 Nov 2001, John Yu wrote:

> Struts supports nested and indexed properties. Doing this,
> 
>
> 
> Struts is clever enough to call myEmployeeBean.getEmployeeVO().getName().
> 
> See 
> 
>http://jakarta.apache.org/struts/api-1.0/org/apache/struts/taglib/bean/package-summary.html#doc.Properties
> 
> and 
> http://jakarta.apache.org/struts/api-1.0/org/apache/struts/util/PropertyUtils.html.
> 
> 
> At 11:25 am 23-11-2001 +1100, you wrote:
> >but doesn't struts require the setName()/getName() to be JavaBean
> >compliant for populating the form with data before passing it to the
> >action?  or is there a way to tell struts to do differently?
> >
> >I agree the my way is much more typing :(
> >
> >cheers
> >dim
> >
> >On Thu, 22 Nov 2001, Michelle Popovits wrote:
> >
> > > Hi Dim,
> > >
> > > Your example is similar to my approach with the exception that you are 
> > still
> > > duplicating
> > > methods of the value object inside of the action form.  Instead of 
> > including
> > > the individual accessors in the form, just include
> > > the accessor for the value object (see my original example)...much less
> > > unnecessary typing this way.
> > > When you need to access the value object properties in java you just 
> > cal the
> > > employeeForm.getEmployeeVo().getName() method and when you are in a jsp and
> > > want to bind the value object property to a text field you refer to the
> > > property as "employeeVo.name".
> > >
> > > HTH,
> > > Michelle
> > >
> > > - Original Message -
> > > From: "Dmitri Colebatch" <[EMAIL PROTECTED]>
> > > To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> > > Cc: <[EMAIL PROTECTED]>
> > > Sent: Thursday, November 22, 2001 5:34 PM
> > > Subject: RE: Design question - Action Form vs Business Delegates/Value Obj
> > > ects
> > >
> > >
> > > > Hi,
> > > >
> > > > I also agree with Michelle...
> > > >
> > > > I think what you are thinking is maybe you could use the struts form _as_
> > > > the value object?  imho this would be bad design, as the whole idea of
> > > > putting the logic in a separate tier is to have it not bound to any one
> > > > form of presentation.  What Michelle is suggesting though, is something
> > > > like:
> > > >
> > > > public class EmployeeForm extends ActionForm
> > > > {
> > > >   private EmployeeVO vo = new EmployeeVO();
> > > >
> > > >   public String getName()
> > > >   {
> > > > return vo.getName();
> > > >   }
> > > >
> > > >   public void setName(String name)
> > > >   {
> > > > vo.setName(name);
> > > >   }
> > > >
> > > >   // and so on
> > > >
> > > >   // get the vo
> > > >   public EmployeeVO getEmployeeVO()
> > > >   {
> > > > return vo;
> > > >   }
> > > > }
> > > >
> > > > so say you have an action class:
> > > >
> > > > public class AddEmployeeAction()
> > > > {
> > > >   public void perform( ... )
> > > >   {
> > > > EmployeeForm eform = (EmployeeForm) form;
> > > > employeeManager.add(eform.getEmployeeVO());
> > > >   }
> > > > }
> > > >
> > > > etc... very simplified example, but hopefully this is a bit clearer... I
> > > > use this all the time, and would be interested to hear what other ppl
> > > > think as well...
> > > >
> > > > cheers
> > > > dim
> > > >
> > > > On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:
> > > >
> > > > > Michelle,
> > > > >
> > > > > thanks for your reply... but I'm not sure I understand your answer.
> > > Probably
> > > > > my message wasn't clear.
> > > > >
> > > > > To use an example, I have:
> > > > >
> > > > > EmployeeForm extends ActionForm
> > > > > +getName():String
> > > > > +getAge():String
> > > > > +getDateOfBirth():String
> > > > >
> > > > > EmployeeVO
> > > > > +getName():String
> > > > > +getAge():Integer
> > > > > +getDateOfBirth():Date
> > > > >
> > > > > EmployeeForm is a simple Struts mapping of the data displayed on the
> > > HTML
> > > > > page. EmployeeVO is the intermediate value/business object where the
> > > fields
> > > > > have a "real" meaning (a Date is a Date).
> > > > >
> > > > > I don't see the reasons of making EmployeeVO an instance variable of
> > > > > EmployeeForm. And EmployeeVO can not be used directly inside Struts to
> > > map
> > > > > data from an HttpRequest because (I think) that only Strings (and int?)
> > > can
> > > > > be handled in ActionForms.
> > > > >
> > > > > My question was somehow: should I get rid of EmployeeVO? It certainly
> > > makes
> > > > > the application cleaner but it may just be a "picky thing" that will
> > > simply
> > > > > waste resources.
> > > > >
> > > > > Thanks.
> > > > >
> > > > > Andrej
> > > > > -Original Message-
> > > > > From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> > > > > Sent: Thursday, November 22, 2001 4:13 PM
> > > > > To: [EMAIL PROTECTED]
> > > > > Cc: [EMAIL PROTECTED]
> > > > > Subject: Re: Design question - Action Form vs Business Deleg

Re: Design question - Action Form vs Business Delegates/Value Objects

[Dmitri Colebatch]

yes, thats fine _in the jsp_ my question is at the other end... for
instance:

  1. user completes form values and submits
  2. struts actionservlet receives post and extracts parameters out of it
  3. struts actionservlet maps the request to an action and instantiates
the form for the action
  4. struts actionservlet copies parameters from http post to the form

this is where I am unsure of why your approach is able to work.  I can see
if you populate the form yourself then you will be able to call those
methods yourself but how does step 4 take place if you dont tell
struts that it needs to call form.getEmployeeVo()?  The only place you
have talked about doing that is in JSPs... for this to work, I would
expect some configuration directive...?

cheers
dim

On Thu, 22 Nov 2001, Michelle Popovits wrote:

> Hi Dim,
> 
> Your example is similar to my approach with the exception that you are still
> duplicating
> methods of the value object inside of the action form.  Instead of including
> the individual accessors in the form, just include
> the accessor for the value object (see my original example)...much less
> unnecessary typing this way.
> When you need to access the value object properties in java you just cal the
> employeeForm.getEmployeeVo().getName() method and when you are in a jsp and
> want to bind the value object property to a text field you refer to the
> property as "employeeVo.name".
> 
> HTH,
> Michelle
> 
> - Original Message -
> From: "Dmitri Colebatch" <[EMAIL PROTECTED]>
> To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Thursday, November 22, 2001 5:34 PM
> Subject: RE: Design question - Action Form vs Business Delegates/Value Obj
> ects
> 
> 
> > Hi,
> >
> > I also agree with Michelle...
> >
> > I think what you are thinking is maybe you could use the struts form _as_
> > the value object?  imho this would be bad design, as the whole idea of
> > putting the logic in a separate tier is to have it not bound to any one
> > form of presentation.  What Michelle is suggesting though, is something
> > like:
> >
> > public class EmployeeForm extends ActionForm
> > {
> >   private EmployeeVO vo = new EmployeeVO();
> >
> >   public String getName()
> >   {
> > return vo.getName();
> >   }
> >
> >   public void setName(String name)
> >   {
> > vo.setName(name);
> >   }
> >
> >   // and so on
> >
> >   // get the vo
> >   public EmployeeVO getEmployeeVO()
> >   {
> > return vo;
> >   }
> > }
> >
> > so say you have an action class:
> >
> > public class AddEmployeeAction()
> > {
> >   public void perform( ... )
> >   {
> > EmployeeForm eform = (EmployeeForm) form;
> > employeeManager.add(eform.getEmployeeVO());
> >   }
> > }
> >
> > etc... very simplified example, but hopefully this is a bit clearer... I
> > use this all the time, and would be interested to hear what other ppl
> > think as well...
> >
> > cheers
> > dim
> >
> > On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:
> >
> > > Michelle,
> > >
> > > thanks for your reply... but I'm not sure I understand your answer.
> Probably
> > > my message wasn't clear.
> > >
> > > To use an example, I have:
> > >
> > > EmployeeForm extends ActionForm
> > > +getName():String
> > > +getAge():String
> > > +getDateOfBirth():String
> > >
> > > EmployeeVO
> > > +getName():String
> > > +getAge():Integer
> > > +getDateOfBirth():Date
> > >
> > > EmployeeForm is a simple Struts mapping of the data displayed on the
> HTML
> > > page. EmployeeVO is the intermediate value/business object where the
> fields
> > > have a "real" meaning (a Date is a Date).
> > >
> > > I don't see the reasons of making EmployeeVO an instance variable of
> > > EmployeeForm. And EmployeeVO can not be used directly inside Struts to
> map
> > > data from an HttpRequest because (I think) that only Strings (and int?)
> can
> > > be handled in ActionForms.
> > >
> > > My question was somehow: should I get rid of EmployeeVO? It certainly
> makes
> > > the application cleaner but it may just be a "picky thing" that will
> simply
> > > waste resources.
> > >
> > > Thanks.
> > >
> > > Andrej
> > > -Original Message-
> > > From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, November 22, 2001 4:13 PM
> > > To: [EMAIL PROTECTED]
> > > Cc: [EMAIL PROTECTED]
> > > Subject: Re: Design question - Action Form vs Business Delegates/Value
> > > Objects
> > >
> > >
> > > Hi,
> > >
> > > I suggest to not duplicate variables that are in your Value Objects in
> your
> > > form object.  Instead include the value object as a member of the the
> form
> > > object.
> > >
> > > ie.
> > >
> > > Form class - below the AccountVo is a value object within the form bean
> > >
> > > public class AddAccountForm extends ActionForm {
> > > 
> > >
> > >   public AccountVo getAccount() {
> > >   return account;
> > >   }
> > >
> > >   public void setAccount(AccountVo aAccount) {
> > >   account = aAccount;
> > >   }
> 

Re: maxlength

[John Yu]

You can wrap the textarea inside a table. You may also want to take a look at:

   http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01251.html

At 06:33 pm 22-11-2001 +0530, you wrote:
>hi all
>
>we dont have any maxlength attribute for textArea in struts, can anyone tell
>me how to give a restriction on input characters on text area field
>
>thanks a lot in advance
>mahesh
>
>--
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>For additional commands, e-mail: 

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Re: Design question - Action Form vs Business Delegates/Value Obj ects

[John Yu]

Struts supports nested and indexed properties. Doing this,

   

Struts is clever enough to call myEmployeeBean.getEmployeeVO().getName().

See 
http://jakarta.apache.org/struts/api-1.0/org/apache/struts/taglib/bean/package-summary.html#doc.Properties
 
and 
http://jakarta.apache.org/struts/api-1.0/org/apache/struts/util/PropertyUtils.html.


At 11:25 am 23-11-2001 +1100, you wrote:
>but doesn't struts require the setName()/getName() to be JavaBean
>compliant for populating the form with data before passing it to the
>action?  or is there a way to tell struts to do differently?
>
>I agree the my way is much more typing :(
>
>cheers
>dim
>
>On Thu, 22 Nov 2001, Michelle Popovits wrote:
>
> > Hi Dim,
> >
> > Your example is similar to my approach with the exception that you are 
> still
> > duplicating
> > methods of the value object inside of the action form.  Instead of 
> including
> > the individual accessors in the form, just include
> > the accessor for the value object (see my original example)...much less
> > unnecessary typing this way.
> > When you need to access the value object properties in java you just 
> cal the
> > employeeForm.getEmployeeVo().getName() method and when you are in a jsp and
> > want to bind the value object property to a text field you refer to the
> > property as "employeeVo.name".
> >
> > HTH,
> > Michelle
> >
> > - Original Message -
> > From: "Dmitri Colebatch" <[EMAIL PROTECTED]>
> > To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> > Cc: <[EMAIL PROTECTED]>
> > Sent: Thursday, November 22, 2001 5:34 PM
> > Subject: RE: Design question - Action Form vs Business Delegates/Value Obj
> > ects
> >
> >
> > > Hi,
> > >
> > > I also agree with Michelle...
> > >
> > > I think what you are thinking is maybe you could use the struts form _as_
> > > the value object?  imho this would be bad design, as the whole idea of
> > > putting the logic in a separate tier is to have it not bound to any one
> > > form of presentation.  What Michelle is suggesting though, is something
> > > like:
> > >
> > > public class EmployeeForm extends ActionForm
> > > {
> > >   private EmployeeVO vo = new EmployeeVO();
> > >
> > >   public String getName()
> > >   {
> > > return vo.getName();
> > >   }
> > >
> > >   public void setName(String name)
> > >   {
> > > vo.setName(name);
> > >   }
> > >
> > >   // and so on
> > >
> > >   // get the vo
> > >   public EmployeeVO getEmployeeVO()
> > >   {
> > > return vo;
> > >   }
> > > }
> > >
> > > so say you have an action class:
> > >
> > > public class AddEmployeeAction()
> > > {
> > >   public void perform( ... )
> > >   {
> > > EmployeeForm eform = (EmployeeForm) form;
> > > employeeManager.add(eform.getEmployeeVO());
> > >   }
> > > }
> > >
> > > etc... very simplified example, but hopefully this is a bit clearer... I
> > > use this all the time, and would be interested to hear what other ppl
> > > think as well...
> > >
> > > cheers
> > > dim
> > >
> > > On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:
> > >
> > > > Michelle,
> > > >
> > > > thanks for your reply... but I'm not sure I understand your answer.
> > Probably
> > > > my message wasn't clear.
> > > >
> > > > To use an example, I have:
> > > >
> > > > EmployeeForm extends ActionForm
> > > > +getName():String
> > > > +getAge():String
> > > > +getDateOfBirth():String
> > > >
> > > > EmployeeVO
> > > > +getName():String
> > > > +getAge():Integer
> > > > +getDateOfBirth():Date
> > > >
> > > > EmployeeForm is a simple Struts mapping of the data displayed on the
> > HTML
> > > > page. EmployeeVO is the intermediate value/business object where the
> > fields
> > > > have a "real" meaning (a Date is a Date).
> > > >
> > > > I don't see the reasons of making EmployeeVO an instance variable of
> > > > EmployeeForm. And EmployeeVO can not be used directly inside Struts to
> > map
> > > > data from an HttpRequest because (I think) that only Strings (and int?)
> > can
> > > > be handled in ActionForms.
> > > >
> > > > My question was somehow: should I get rid of EmployeeVO? It certainly
> > makes
> > > > the application cleaner but it may just be a "picky thing" that will
> > simply
> > > > waste resources.
> > > >
> > > > Thanks.
> > > >
> > > > Andrej
> > > > -Original Message-
> > > > From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> > > > Sent: Thursday, November 22, 2001 4:13 PM
> > > > To: [EMAIL PROTECTED]
> > > > Cc: [EMAIL PROTECTED]
> > > > Subject: Re: Design question - Action Form vs Business Delegates/Value
> > > > Objects
> > > >
> > > >
> > > > Hi,
> > > >
> > > > I suggest to not duplicate variables that are in your Value Objects in
> > your
> > > > form object.  Instead include the value object as a member of the the
> > form
> > > > object.
> > > >
> > > > ie.
> > > >
> > > > Form class - below the AccountVo is a value object within the form bean
> > > >
> > > > public class AddAccountForm extends ActionForm {
> > > > 
> > > >
> > > >   pub

Re: query

[John Yu]

Try,

   JSP1 -> Action1 -> JSP2

In Action1, you can use BeanUtil/PropertyUtil to copy the data from the 
bean from JSP1 to the bean used in JSP2.

At 04:43 pm 01-12-2001 +0530, you wrote:
>Hello,
>
>Please help us identify a solution to the following requirement in STRUTS
>perspective:
>
>Passing form data from one .jsp to another without sharing a common bean.
>
>
>Regards
>Sai

-- 
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e: [EMAIL PROTECTED] w: +(65) 873 5989
w: http://www.scioworks.com   m: +(65) 9782 9610

Scioworks Camino - "Rapid WebApp Assembly for Struts"


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Re: Design question - Action Form vs Business Delegates/Value Obj ects

[Michelle Popovits]

Hi Dim,

Your example is similar to my approach with the exception that you are still
duplicating
methods of the value object inside of the action form.  Instead of including
the individual accessors in the form, just include
the accessor for the value object (see my original example)...much less
unnecessary typing this way.
When you need to access the value object properties in java you just cal the
employeeForm.getEmployeeVo().getName() method and when you are in a jsp and
want to bind the value object property to a text field you refer to the
property as "employeeVo.name".

HTH,
Michelle

- Original Message -
From: "Dmitri Colebatch" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 5:34 PM
Subject: RE: Design question - Action Form vs Business Delegates/Value Obj
ects


> Hi,
>
> I also agree with Michelle...
>
> I think what you are thinking is maybe you could use the struts form _as_
> the value object?  imho this would be bad design, as the whole idea of
> putting the logic in a separate tier is to have it not bound to any one
> form of presentation.  What Michelle is suggesting though, is something
> like:
>
> public class EmployeeForm extends ActionForm
> {
>   private EmployeeVO vo = new EmployeeVO();
>
>   public String getName()
>   {
> return vo.getName();
>   }
>
>   public void setName(String name)
>   {
> vo.setName(name);
>   }
>
>   // and so on
>
>   // get the vo
>   public EmployeeVO getEmployeeVO()
>   {
> return vo;
>   }
> }
>
> so say you have an action class:
>
> public class AddEmployeeAction()
> {
>   public void perform( ... )
>   {
> EmployeeForm eform = (EmployeeForm) form;
> employeeManager.add(eform.getEmployeeVO());
>   }
> }
>
> etc... very simplified example, but hopefully this is a bit clearer... I
> use this all the time, and would be interested to hear what other ppl
> think as well...
>
> cheers
> dim
>
> On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:
>
> > Michelle,
> >
> > thanks for your reply... but I'm not sure I understand your answer.
Probably
> > my message wasn't clear.
> >
> > To use an example, I have:
> >
> > EmployeeForm extends ActionForm
> > +getName():String
> > +getAge():String
> > +getDateOfBirth():String
> >
> > EmployeeVO
> > +getName():String
> > +getAge():Integer
> > +getDateOfBirth():Date
> >
> > EmployeeForm is a simple Struts mapping of the data displayed on the
HTML
> > page. EmployeeVO is the intermediate value/business object where the
fields
> > have a "real" meaning (a Date is a Date).
> >
> > I don't see the reasons of making EmployeeVO an instance variable of
> > EmployeeForm. And EmployeeVO can not be used directly inside Struts to
map
> > data from an HttpRequest because (I think) that only Strings (and int?)
can
> > be handled in ActionForms.
> >
> > My question was somehow: should I get rid of EmployeeVO? It certainly
makes
> > the application cleaner but it may just be a "picky thing" that will
simply
> > waste resources.
> >
> > Thanks.
> >
> > Andrej
> > -Original Message-
> > From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, November 22, 2001 4:13 PM
> > To: [EMAIL PROTECTED]
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: Design question - Action Form vs Business Delegates/Value
> > Objects
> >
> >
> > Hi,
> >
> > I suggest to not duplicate variables that are in your Value Objects in
your
> > form object.  Instead include the value object as a member of the the
form
> > object.
> >
> > ie.
> >
> > Form class - below the AccountVo is a value object within the form bean
> >
> > public class AddAccountForm extends ActionForm {
> > 
> >
> >   public AccountVo getAccount() {
> >   return account;
> >   }
> >
> >   public void setAccount(AccountVo aAccount) {
> >   account = aAccount;
> >   }
> >
> > 
> > }
> >
> > Then, in your jsp you reference the accountvo members like so using the
dot
> > notation -- the property "account.password" gets converted to
> > getAccount().getPassword() or getAccount().setPassword(value).
> >
> > 
> >  > maxlength="100" />
> >
> >
> > This feature of struts/javabeans is a real time saver in terms of
> > development.  Once something is in a value object then that value object
> > gets passed from the back-end all the way to the front end without
needing
> > to touch any of it's attributes.  And if you're editing the data on a
web
> > page when you submit the page the new data automatically gets set into
the
> > value object which can then be passed to the back end (no unnecessary
> > handling of the data).
> >
> > HTH,
> > Michelle
> >
> > >From: "Sobkowski, Andrej" <[EMAIL PROTECTED]>
> > >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> > >To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
> > >Subject: Design question - Action Form vs Business Delegates/Value
Objects
> > >Date: Thu, 22 Nov 2001 13:28:05 -0500
> > >
> > >Hello,
> > >
> > >we're 

RE: Design question - Action Form vs Business Delegates/Value Objects

[Matthew O'Haire]

Hello everyone,

I also agree...

We also use struts in J2EE apps with and make use of the Value Object
pattern. (http://www.tstrata.trysoft.com)

We assign the VO as a member of the ActionForm.  If we want to abstract the
VO, we add accessor methods to the Form as Dmitri has explained...  these
are all fairly well recognised design patterns.

You definately DON'T want to pass struts concepts into your business layer
(EJB's)!

Maybe it's time for a sample application using struts and EJB's... based on
JBoss perhaps... something that showcases EJB/Struts design patterns.  Is
there one already?

Matt O'Haire
Trysoft Corporation Ltd.
http://www.trysoft.com


-Original Message-
From: Dmitri Colebatch [mailto:[EMAIL PROTECTED]]
Sent: Friday, November 23, 2001 08:35
To: Struts Users Mailing List
Cc: '[EMAIL PROTECTED]'
Subject: RE: Design question - Action Form vs Business Delegates/Value
Objects


Hi,

I also agree with Michelle...

I think what you are thinking is maybe you could use the struts form _as_
the value object?  imho this would be bad design, as the whole idea of
putting the logic in a separate tier is to have it not bound to any one
form of presentation.  What Michelle is suggesting though, is something
like:

public class EmployeeForm extends ActionForm
{
  private EmployeeVO vo = new EmployeeVO();

  public String getName()
  {
return vo.getName();
  }

  public void setName(String name)
  { 
vo.setName(name);
  }

  // and so on

  // get the vo
  public EmployeeVO getEmployeeVO()
  { 
return vo;
  }
}

so say you have an action class:

public class AddEmployeeAction()
{
  public void perform( ... )
  { 
EmployeeForm eform = (EmployeeForm) form;
employeeManager.add(eform.getEmployeeVO());
  }
}

etc... very simplified example, but hopefully this is a bit clearer... I
use this all the time, and would be interested to hear what other ppl
think as well...

cheers
dim

RE: design question

[Lai Kok Cheong]

It is quite tricky to answer your question as you did not mention additional
info i.e best practices is also depend on the  application size ( how much
client it will cater and for what purpose )
anyway this is what I hope you'll get something from my assumption :-
1) if the number of client is not too many i.e only have 100 + but no more
than or never goes beyond 100 000 ( the number is abitrary , just to show
you how big is big )
then session will be the choice since it is faster  to retrieve the data ,
but if you 're going to have many clients then state bean will be more
efficient since the session will used up your memory while the state bean (
session bean) will passivate if it is not used ( and save the memory ) 

2) Please refer to the www.javasoft.com website and find the EJB tutorial
from there 
3) That depend on your architecture.basically the bean should stick to the
javabeans specification design and should not have any jdbc calls ( but
there is an exceptio for that . i.e if you create a bean for your taglibs
you'll need to embed the jdbc to it )


> -Original Message-
> From: Màris Orbidàns [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 4:54 PM
> To:   Struts-list (E-mail)
> Subject:  design question
> 
> Hello
> 
> I have several questions about design, "best practises":
> 
> 1)  Where to store client's profile information (like login name) ?
> session  or system state bean ?
> 
> 2)  How to create and use a system state bean ?
> 
> System state bean should be in scope "session", shouldnt it ?
> 
> 3) Where to put business logic (where I invoke JDBC) ?  
>   Should business logic class be a bean ?
> 
> thanx in advance
> Maris Orbidans
>   
> 
> 
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 

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Re: Design question - Action Form vs Business Delegates/Value Objects

[Dmitri Colebatch]

but doesn't struts require the setName()/getName() to be JavaBean
compliant for populating the form with data before passing it to the
action?  or is there a way to tell struts to do differently?

I agree the my way is much more typing :(

cheers
dim

On Thu, 22 Nov 2001, Michelle Popovits wrote:

> Hi Dim,
> 
> Your example is similar to my approach with the exception that you are still
> duplicating
> methods of the value object inside of the action form.  Instead of including
> the individual accessors in the form, just include
> the accessor for the value object (see my original example)...much less
> unnecessary typing this way.
> When you need to access the value object properties in java you just cal the
> employeeForm.getEmployeeVo().getName() method and when you are in a jsp and
> want to bind the value object property to a text field you refer to the
> property as "employeeVo.name".
> 
> HTH,
> Michelle
> 
> - Original Message -
> From: "Dmitri Colebatch" <[EMAIL PROTECTED]>
> To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Thursday, November 22, 2001 5:34 PM
> Subject: RE: Design question - Action Form vs Business Delegates/Value Obj
> ects
> 
> 
> > Hi,
> >
> > I also agree with Michelle...
> >
> > I think what you are thinking is maybe you could use the struts form _as_
> > the value object?  imho this would be bad design, as the whole idea of
> > putting the logic in a separate tier is to have it not bound to any one
> > form of presentation.  What Michelle is suggesting though, is something
> > like:
> >
> > public class EmployeeForm extends ActionForm
> > {
> >   private EmployeeVO vo = new EmployeeVO();
> >
> >   public String getName()
> >   {
> > return vo.getName();
> >   }
> >
> >   public void setName(String name)
> >   {
> > vo.setName(name);
> >   }
> >
> >   // and so on
> >
> >   // get the vo
> >   public EmployeeVO getEmployeeVO()
> >   {
> > return vo;
> >   }
> > }
> >
> > so say you have an action class:
> >
> > public class AddEmployeeAction()
> > {
> >   public void perform( ... )
> >   {
> > EmployeeForm eform = (EmployeeForm) form;
> > employeeManager.add(eform.getEmployeeVO());
> >   }
> > }
> >
> > etc... very simplified example, but hopefully this is a bit clearer... I
> > use this all the time, and would be interested to hear what other ppl
> > think as well...
> >
> > cheers
> > dim
> >
> > On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:
> >
> > > Michelle,
> > >
> > > thanks for your reply... but I'm not sure I understand your answer.
> Probably
> > > my message wasn't clear.
> > >
> > > To use an example, I have:
> > >
> > > EmployeeForm extends ActionForm
> > > +getName():String
> > > +getAge():String
> > > +getDateOfBirth():String
> > >
> > > EmployeeVO
> > > +getName():String
> > > +getAge():Integer
> > > +getDateOfBirth():Date
> > >
> > > EmployeeForm is a simple Struts mapping of the data displayed on the
> HTML
> > > page. EmployeeVO is the intermediate value/business object where the
> fields
> > > have a "real" meaning (a Date is a Date).
> > >
> > > I don't see the reasons of making EmployeeVO an instance variable of
> > > EmployeeForm. And EmployeeVO can not be used directly inside Struts to
> map
> > > data from an HttpRequest because (I think) that only Strings (and int?)
> can
> > > be handled in ActionForms.
> > >
> > > My question was somehow: should I get rid of EmployeeVO? It certainly
> makes
> > > the application cleaner but it may just be a "picky thing" that will
> simply
> > > waste resources.
> > >
> > > Thanks.
> > >
> > > Andrej
> > > -Original Message-
> > > From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, November 22, 2001 4:13 PM
> > > To: [EMAIL PROTECTED]
> > > Cc: [EMAIL PROTECTED]
> > > Subject: Re: Design question - Action Form vs Business Delegates/Value
> > > Objects
> > >
> > >
> > > Hi,
> > >
> > > I suggest to not duplicate variables that are in your Value Objects in
> your
> > > form object.  Instead include the value object as a member of the the
> form
> > > object.
> > >
> > > ie.
> > >
> > > Form class - below the AccountVo is a value object within the form bean
> > >
> > > public class AddAccountForm extends ActionForm {
> > > 
> > >
> > >   public AccountVo getAccount() {
> > >   return account;
> > >   }
> > >
> > >   public void setAccount(AccountVo aAccount) {
> > >   account = aAccount;
> > >   }
> > >
> > > 
> > > }
> > >
> > > Then, in your jsp you reference the accountvo members like so using the
> dot
> > > notation -- the property "account.password" gets converted to
> > > getAccount().getPassword() or getAccount().setPassword(value).
> > >
> > >  maxlength="10" />
> > >  size="60"
> > > maxlength="100" />
> > >
> > >
> > > This feature of struts/javabeans is a real time saver in terms of
> > > development.  Once something is in a value object then that value object
> > > gets passed from the back-end all

RE: All the jar files cann't be read

[Lily Zou]

  Hi, Brett

Thank you very much for your great help. I am using Apache/tomcat3.2.1
and also I am trying to use our existing Ant system (quite complicated )to
build it. Those configuration job is painful. I will try to use just
Tomcat4.0 and get the example working, then move to Apache & Tomcat. 

Thank you again, Brett.

  Lily

-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 4:46 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


Hi Lily,

I'm not sure which version of Tomcat you are using, but you need to read up
a bit on webapps, because it seems that the JSP's are not being handled by
Tomcat (perhaps Apache) or for some reason are being served as static files.
Tomcat 4 has some good documentation on how to set up a web application:
(should apply to 3 too). Sorry, can't send the link - jakarta.apache.org is
down :(

As for struts.jar, there is a doc on the struts site - probably in the FAQ
or kickstart FAQ, about where struts.jar can and can't be. I think it pretty
much says "must be in web application's classpath - and nothing else". So
you can't put it in the CLASSPATH variable, jre/ext/lib, or tomcat's common
lib directory - that will make it available to Tomcat, other Java classes,
and other webapps, which will make things break.

Can I suggest you try getting the examples up and running first, then use
them as a model for your own system? That's what I found easiest.

Cheers,
Brett

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Friday, 23 November 2001 2:31 AM
To: Struts Users Mailing List
Subject: RE: All the jar files cann't be read


 I put the struts.jar file in that folder and put it into my classpath.
Maybe that is the reason why it shows that path. May I ask where I could
config this ?

 By the way, I still got blank page but if I click "view source", I can see
all the jsp code is there, which means that all the taglib or related lib
files could not be found or linked.  I think I put all the lib files in
right place. May I ask where I could config this path other than at the top
of each JSP page ?

 Tons of thanks.

 Lily

-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 6:04 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


That's a normal message in startup. However, the directory looks a bit
suspect - there should be a WEB-INF/lib somewhere in there. eg here is mine:
register('-//Apache Software Foundation//DTD Struts Configuration 1.0//EN',
'jar:file:/home/bporter/cvs/shopping/product-db/tomcat/webapps/shopping/WEB-
INF/lib/struts.jar!/org/apache/struts/resources/struts-config_1_0.dtd'

for me, CATALINA_BASE = /home/bporter/cvs/shopping/product-db/tomcat

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:24 AM
To: Struts Users Mailing List
Subject: RE: All the jar files cann't be read


  Thank you very much, Brett. The jar file did corrupted even though I just
copied from somewhere else. This time I got:  


   register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN', 
 
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

New org.apache.struts.action.ActionMapping


   May I ask why I got this ?

   
Lily


-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 5:09 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


My guess is that it got corrupted in the download, or perhaps because you
have two paths in the webapp name (s2100\si) - I've never seen that before,
not sure if it should work.

Can you unjar the struts.jar file manually into a temp dir to check it is
not corrupt?

- Brett

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:06 AM
To: 'Struts Users Mailing List'
Subject: All the jar files cann't be read


I put struts.jar and commons-*.jar file under WEB-INF\lib folder.
However every time I started tomcat, I got following error msg ( every time
it complains different jar file name ) and the page is just blank.   Could
anybody tell me what is the most likely reseason for this ? I am the first
person in my company to try struts so I have no help around. Looking forward
to any advice.  

cannot load servlet name: jsp:
C:\opt\redknee\product\s2100\1_0_1\webapps\s2100\si\WEB-INF\lib\struts.jar
is not a directory or zip/jar file or if it's a zip/ja
r file then it is corrupted.

register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

resolveEntity('-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN',
'http:/

RE: All the jar files cann't be read

[Brett Porter]

Hi Lily,

I'm not sure which version of Tomcat you are using, but you need to read up
a bit on webapps, because it seems that the JSP's are not being handled by
Tomcat (perhaps Apache) or for some reason are being served as static files.
Tomcat 4 has some good documentation on how to set up a web application:
(should apply to 3 too). Sorry, can't send the link - jakarta.apache.org is
down :(

As for struts.jar, there is a doc on the struts site - probably in the FAQ
or kickstart FAQ, about where struts.jar can and can't be. I think it pretty
much says "must be in web application's classpath - and nothing else". So
you can't put it in the CLASSPATH variable, jre/ext/lib, or tomcat's common
lib directory - that will make it available to Tomcat, other Java classes,
and other webapps, which will make things break.

Can I suggest you try getting the examples up and running first, then use
them as a model for your own system? That's what I found easiest.

Cheers,
Brett

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Friday, 23 November 2001 2:31 AM
To: Struts Users Mailing List
Subject: RE: All the jar files cann't be read


 I put the struts.jar file in that folder and put it into my classpath.
Maybe that is the reason why it shows that path. May I ask where I could
config this ?

 By the way, I still got blank page but if I click "view source", I can see
all the jsp code is there, which means that all the taglib or related lib
files could not be found or linked.  I think I put all the lib files in
right place. May I ask where I could config this path other than at the top
of each JSP page ?

 Tons of thanks.

 Lily

-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 6:04 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


That's a normal message in startup. However, the directory looks a bit
suspect - there should be a WEB-INF/lib somewhere in there. eg here is mine:
register('-//Apache Software Foundation//DTD Struts Configuration 1.0//EN',
'jar:file:/home/bporter/cvs/shopping/product-db/tomcat/webapps/shopping/WEB-
INF/lib/struts.jar!/org/apache/struts/resources/struts-config_1_0.dtd'

for me, CATALINA_BASE = /home/bporter/cvs/shopping/product-db/tomcat

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:24 AM
To: Struts Users Mailing List
Subject: RE: All the jar files cann't be read


  Thank you very much, Brett. The jar file did corrupted even though I just
copied from somewhere else. This time I got:  


   register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN', 
 
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

New org.apache.struts.action.ActionMapping


   May I ask why I got this ?

   
Lily


-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 5:09 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


My guess is that it got corrupted in the download, or perhaps because you
have two paths in the webapp name (s2100\si) - I've never seen that before,
not sure if it should work.

Can you unjar the struts.jar file manually into a temp dir to check it is
not corrupt?

- Brett

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:06 AM
To: 'Struts Users Mailing List'
Subject: All the jar files cann't be read


I put struts.jar and commons-*.jar file under WEB-INF\lib folder.
However every time I started tomcat, I got following error msg ( every time
it complains different jar file name ) and the page is just blank.   Could
anybody tell me what is the most likely reseason for this ? I am the first
person in my company to try struts so I have no help around. Looking forward
to any advice.  

cannot load servlet name: jsp:
C:\opt\redknee\product\s2100\1_0_1\webapps\s2100\si\WEB-INF\lib\struts.jar
is not a directory or zip/jar file or if it's a zip/ja
r file then it is corrupted.

register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

resolveEntity('-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN',
'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')
 Resolving to alternate DTD
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

 New org.apache.struts.action.ActionMapping

 Set org.apache.struts.action.ActionMapping properties

Call
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/
addFormBean, type=org.apache.struts.actions.AddFormBeanAction])

Pop org.apache.struts.action.ActionMapping


   
   

Re: displaying values in columns of 5

[Robert Parker]

Works fine for me using Tomcat 3.x and 4.0 standalone. Maybe you could look
at the generated jsp code to see what scope the variable is in...


Rob
- Original Message -
From: "Henrick Chua" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Friday, November 23, 2001 9:56 AM
Subject: RE: displaying values in columns of 5


> i understand that the indexId="i" is the counter... and it increments
> everytime it iterates...
> but the 'i' in
> <%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>
>
> is said to be undefined...?
>
> is this a bug of IBM websphere running apache tomcat?
>
> thanx.
> henrik
>
> -Original Message-
> From: Robert Parker [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 2:57 PM
> To: Struts Users Mailing List
> Subject: Re: displaying values in columns of 5
>
>
> Look at the iterate tag (see below)  - the last attribute (indexId) is the
> iterator's counter variable.
>
> regards
>
> Rob
> - Original Message -
> From: "Henrick Chua" <[EMAIL PROTECTED]>
> To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
> Sent: Friday, November 23, 2001 9:33 AM
> Subject: RE: displaying values in columns of 5
>
>
> > hi!
> >
> > just want to ask... how did you declare the variable i?
> > coz i was not able to compile it. due to undefined variable i.
> >
> > thanx
> > henrik
> > -Original Message-
> > From: Robert Parker [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, November 21, 2001 4:38 PM
> > To: Struts Users Mailing List
> > Subject: Re: displaying values in columns of 5
> >
> >
> > Here's what I did, I resorted to some script inside an iterate tag. You
> can
> > access the iterator's internal counter as an Integer... (Note in this
case
> > I'm grouping by 3's)
> >
> >indexId="i">
> >   ...
> >   <%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>
> >   ...
> >
> >
> > regards
> >
> > Rob
> > - Original Message -
> > From: "Henrick Chua" <[EMAIL PROTECTED]>
> > To: "Struts Users Mailing List (E-mail)"
<[EMAIL PROTECTED]>
> > Sent: Thursday, November 22, 2001 11:19 AM
> > Subject: displaying values in columns of 5
> >
> >
> > > Hi folks!
> > >
> > > if i have a collection of values.  let's say 23 items.  how can i
> display
> > it
> > > such a way that there are only 5 item in each row.  should i use 2
> > iterates
> > > for it or something?
> > >
> > > thanx in advance
> > > h
> > >
> > >
> > >
> > > --
> > > To unsubscribe, e-mail:
> > 
> > > For additional commands, e-mail:
> > 
> > >
> > >
> >
> >
> > --
> > To unsubscribe, e-mail:
> > 
> > For additional commands, e-mail:
> > 
> >
> > --
> > To unsubscribe, e-mail:
> 
> > For additional commands, e-mail:
> 
> >
> >
>
>
> --
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> 
> For additional commands, e-mail:
> 
>
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> For additional commands, e-mail:

>
>


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How to remove/reset Request Parameters in action?? - is this possible??

[Greg Callaghan]

Hi,

Is it possible to clear request parameters.  Either remove them, or at least 
reset them to another value?

I'm trying to forward from one action to another, where the 2nd action's 
operations depends on request parameters.   For the entry point I'm coming 
in from there need to be no request parameters, however there are still 
request parameters which the first action picked up (via it's associated 
form).   I really want to just drop the request parameters (not attributes) 
in the first action before passing on to the 2nd action.  That is my mapping 
for the first action is -:

   


Thanks in advance
Greg

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RE: displaying values in columns of 5

[Henrick Chua]

i understand that the indexId="i" is the counter... and it increments
everytime it iterates... 
but the 'i' in 
<%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>

is said to be undefined...? 

is this a bug of IBM websphere running apache tomcat?

thanx.
henrik

-Original Message-
From: Robert Parker [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 2:57 PM
To: Struts Users Mailing List
Subject: Re: displaying values in columns of 5


Look at the iterate tag (see below)  - the last attribute (indexId) is the
iterator's counter variable.

regards

Rob
- Original Message -
From: "Henrick Chua" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Friday, November 23, 2001 9:33 AM
Subject: RE: displaying values in columns of 5


> hi!
>
> just want to ask... how did you declare the variable i?
> coz i was not able to compile it. due to undefined variable i.
>
> thanx
> henrik
> -Original Message-
> From: Robert Parker [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, November 21, 2001 4:38 PM
> To: Struts Users Mailing List
> Subject: Re: displaying values in columns of 5
>
>
> Here's what I did, I resorted to some script inside an iterate tag. You
can
> access the iterator's internal counter as an Integer... (Note in this case
> I'm grouping by 3's)
>
>   
>   ...
>   <%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>
>   ...
>
>
> regards
>
> Rob
> - Original Message -
> From: "Henrick Chua" <[EMAIL PROTECTED]>
> To: "Struts Users Mailing List (E-mail)" <[EMAIL PROTECTED]>
> Sent: Thursday, November 22, 2001 11:19 AM
> Subject: displaying values in columns of 5
>
>
> > Hi folks!
> >
> > if i have a collection of values.  let's say 23 items.  how can i
display
> it
> > such a way that there are only 5 item in each row.  should i use 2
> iterates
> > for it or something?
> >
> > thanx in advance
> > h
> >
> >
> >
> > --
> > To unsubscribe, e-mail:
> 
> > For additional commands, e-mail:
> 
> >
> >
>
>
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>
>


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Re: displaying values in columns of 5

[Robert Parker]

Look at the iterate tag (see below)  - the last attribute (indexId) is the
iterator's counter variable.

regards

Rob
- Original Message -
From: "Henrick Chua" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Friday, November 23, 2001 9:33 AM
Subject: RE: displaying values in columns of 5


> hi!
>
> just want to ask... how did you declare the variable i?
> coz i was not able to compile it. due to undefined variable i.
>
> thanx
> henrik
> -Original Message-
> From: Robert Parker [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, November 21, 2001 4:38 PM
> To: Struts Users Mailing List
> Subject: Re: displaying values in columns of 5
>
>
> Here's what I did, I resorted to some script inside an iterate tag. You
can
> access the iterator's internal counter as an Integer... (Note in this case
> I'm grouping by 3's)
>
>   
>   ...
>   <%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>
>   ...
>
>
> regards
>
> Rob
> - Original Message -
> From: "Henrick Chua" <[EMAIL PROTECTED]>
> To: "Struts Users Mailing List (E-mail)" <[EMAIL PROTECTED]>
> Sent: Thursday, November 22, 2001 11:19 AM
> Subject: displaying values in columns of 5
>
>
> > Hi folks!
> >
> > if i have a collection of values.  let's say 23 items.  how can i
display
> it
> > such a way that there are only 5 item in each row.  should i use 2
> iterates
> > for it or something?
> >
> > thanx in advance
> > h
> >
> >
> >
> > --
> > To unsubscribe, e-mail:
> 
> > For additional commands, e-mail:
> 
> >
> >
>
>
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>
>


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RE: Design question - Action Form vs Business Delegates/Value Objects

[Dmitri Colebatch]

Hi,

I also agree with Michelle...

I think what you are thinking is maybe you could use the struts form _as_
the value object?  imho this would be bad design, as the whole idea of
putting the logic in a separate tier is to have it not bound to any one
form of presentation.  What Michelle is suggesting though, is something
like:

public class EmployeeForm extends ActionForm
{
  private EmployeeVO vo = new EmployeeVO();

  public String getName()
  {
return vo.getName();
  }

  public void setName(String name)
  { 
vo.setName(name);
  }

  // and so on

  // get the vo
  public EmployeeVO getEmployeeVO()
  { 
return vo;
  }
}

so say you have an action class:

public class AddEmployeeAction()
{
  public void perform( ... )
  { 
EmployeeForm eform = (EmployeeForm) form;
employeeManager.add(eform.getEmployeeVO());
  }
}

etc... very simplified example, but hopefully this is a bit clearer... I
use this all the time, and would be interested to hear what other ppl
think as well...

cheers
dim

On Thu, 22 Nov 2001, Sobkowski, Andrej wrote:

> Michelle,
> 
> thanks for your reply... but I'm not sure I understand your answer. Probably
> my message wasn't clear.
> 
> To use an example, I have:
> 
> EmployeeForm extends ActionForm
> +getName():String
> +getAge():String
> +getDateOfBirth():String
> 
> EmployeeVO
> +getName():String
> +getAge():Integer
> +getDateOfBirth():Date
> 
> EmployeeForm is a simple Struts mapping of the data displayed on the HTML
> page. EmployeeVO is the intermediate value/business object where the fields
> have a "real" meaning (a Date is a Date).
> 
> I don't see the reasons of making EmployeeVO an instance variable of
> EmployeeForm. And EmployeeVO can not be used directly inside Struts to map
> data from an HttpRequest because (I think) that only Strings (and int?) can
> be handled in ActionForms.
> 
> My question was somehow: should I get rid of EmployeeVO? It certainly makes
> the application cleaner but it may just be a "picky thing" that will simply
> waste resources.
> 
> Thanks.
> 
> Andrej
> -Original Message-
> From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 4:13 PM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Subject: Re: Design question - Action Form vs Business Delegates/Value
> Objects
> 
> 
> Hi,
> 
> I suggest to not duplicate variables that are in your Value Objects in your 
> form object.  Instead include the value object as a member of the the form 
> object.
> 
> ie.
> 
> Form class - below the AccountVo is a value object within the form bean
> 
> public class AddAccountForm extends ActionForm {
> 
> 
>   public AccountVo getAccount() {
>   return account;
>   }
> 
>   public void setAccount(AccountVo aAccount) {
>   account = aAccount;
>   }
> 
> 
> }
> 
> Then, in your jsp you reference the accountvo members like so using the dot 
> notation -- the property "account.password" gets converted to 
> getAccount().getPassword() or getAccount().setPassword(value).
> 
> 
>  maxlength="100" />
> 
> 
> This feature of struts/javabeans is a real time saver in terms of 
> development.  Once something is in a value object then that value object 
> gets passed from the back-end all the way to the front end without needing 
> to touch any of it's attributes.  And if you're editing the data on a web 
> page when you submit the page the new data automatically gets set into the 
> value object which can then be passed to the back end (no unnecessary 
> handling of the data).
> 
> HTH,
> Michelle
> 
> >From: "Sobkowski, Andrej" <[EMAIL PROTECTED]>
> >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> >To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
> >Subject: Design question - Action Form vs Business Delegates/Value Objects
> >Date: Thu, 22 Nov 2001 13:28:05 -0500
> >
> >Hello,
> >
> >we're working on a quite large project with J2EE (including EJBs) and we're
> >using Struts (we're still in the early phases). To design a "clean"
> >application, I've defined different "object conversions":
> >* Request phase
> >- the ActionForm is converted to a Value Object
> >- the Value Object is passed to the EJBs
> >* Response phase
> >- the EJBs return one ore more Value Objects
> >- the Value Object(s) is (are) converted back to ActionForms.
> >
> >I think it's a good approach, but:
> >- my ActionForm and Value Objects have an almost identical interface. The
> >main difference is that the ActionForm instance variables are always of 
> >type
> >String while for the Value Object  have "final types" information (Date,
> >Integer, whatever)
> >- the conversion "ActionForm to VO" and back is slowing down the 
> >performance
> >as my EJBs often return hundreds of VOs (each one to be converted to an
> >ActionForm).
> >I know this can be improved by using paging (Page-by-Page iterator) on both
> >the back-end and the front-end; furthermore, I've written a small "mapper"
> >that uses extensively the 

RE: displaying values in columns of 5

[Henrick Chua]

hi! 

just want to ask... how did you declare the variable i?
coz i was not able to compile it. due to undefined variable i.

thanx
henrik
-Original Message-
From: Robert Parker [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 4:38 PM
To: Struts Users Mailing List
Subject: Re: displaying values in columns of 5


Here's what I did, I resorted to some script inside an iterate tag. You can
access the iterator's internal counter as an Integer... (Note in this case
I'm grouping by 3's)

  
  ...
  <%=(((i.intValue()%3)==0) && ((i.intValue() > 0)))?"":""%>
  ...
   

regards

Rob
- Original Message -
From: "Henrick Chua" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List (E-mail)" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 11:19 AM
Subject: displaying values in columns of 5


> Hi folks!
>
> if i have a collection of values.  let's say 23 items.  how can i display
it
> such a way that there are only 5 item in each row.  should i use 2
iterates
> for it or something?
>
> thanx in advance
> h
>
>
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>
>


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Re: Design question - Action Form vs Business Delegates/Value Objects

[Sandeep Takhar]

I'm interested in this mapper you talked about,

thanks,


btw: What is the difference between this one and the
one on Ted Husted's?  Are you talking about Mapco?

Sandeep
--- "Sobkowski, Andrej" <[EMAIL PROTECTED]>
wrote:
> Hello,
> 
> we're working on a quite large project with J2EE
> (including EJBs) and we're
> using Struts (we're still in the early phases). To
> design a "clean"
> application, I've defined different "object
> conversions":
> * Request phase
> - the ActionForm is converted to a Value Object
> - the Value Object is passed to the EJBs
> * Response phase
> - the EJBs return one ore more Value Objects
> - the Value Object(s) is (are) converted back to
> ActionForms.
> 
> I think it's a good approach, but:
> - my ActionForm and Value Objects have an almost
> identical interface. The
> main difference is that the ActionForm instance
> variables are always of type
> String while for the Value Object  have "final
> types" information (Date,
> Integer, whatever)
> - the conversion "ActionForm to VO" and back is
> slowing down the performance
> as my EJBs often return hundreds of VOs (each one to
> be converted to an
> ActionForm).
> I know this can be improved by using paging
> (Page-by-Page iterator) on both
> the back-end and the front-end; furthermore, I've
> written a small "mapper"
> that uses extensively the Reflection API to
> automatically perform the
> mapping and this probably has an impact on the
> overall performance.
> 
> My question is: what are the best practices for this
> type of issues? Does
> anybody have the same problems? Should I reduce the
> level of abstraction
> between the layers?
> 
> Thank you!
> 
> Andrej
> 
> PS. if you're interested, I can share the simple
> mapper. It's a very small
> mapper (less than 15k) that works fine with my app.
> It's waaay less
> complete than the mapper on Ted Husted's site but...
> 
> -Original Message-
> From: Jon.Ridgway [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 12:10 PM
> To: 'Struts Users Mailing List'
> Subject: RE: design question
> 
> 
> 
> 
> -Original Message-
> From: M`ris Orbid`ns [mailto:[EMAIL PROTECTED]] 
> Sent: 22 November 2001 16:54
> To: Struts-list (E-mail)
> Subject: design question
> 
> Hello
> 
> I have several questions about design, "best
> practises":
> 
> 1)  Where to store client's profile information
> (like login name) ?
> session  or system state bean ?
> 
> Use the HttpSession. But be aware that you should
> put as little as possible
> into the session. Large sessions do not work well in
> a cluster.
> 
> 2)  How to create and use a system state bean ?
> 
> System state bean should be in scope "session",
> shouldnt it ?
> 
> Again put as little as possible in the session and
> avoid statefull session
> beans. If you must put a bean in the session, make
> it as small as possible,
> ideally it would just hold key info that can be used
> to request beans at
> request level when needed. This is a trade off
> between performance and
> scalability.
> 
> 3) Where to put business logic (where I invoke JDBC)
> ?  
>   Should business logic class be a bean ?
> 
> If you have an app server business logic should go
> into a stateless session
> bean (BusinessService), which is invoked (via a
> BusinessDelegate) from a
> struts Action class. If you are not using EJBs then
> the Action class should
> still invoke a business delegate, but the delegate
> would simply create a
> normal Java bean to act as the Business Service. The
> business service
> (Stateless EJB or Java Bean) should delegate to
> another class to access a
> datasource. If your are using EJBs this should be a
> CMP or BMP+DAO depending
> on your app server (EJB 2 compliant consider CMP,
> else try CMP if supported
> but be prepared to subclass to a BMP+DAO at a later
> date).
> 
> thanx in advance
> Maris Orbidans
>   
> 
> Jon Ridgway.
> 
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
> 


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Re: comments

[Gregor Rayman]

"Sobkowski, Andrej" <[EMAIL PROTECTED]> wrote:


> Careful:
> 
> 
> The JSP tag will be evaluated (though not shown on the browser since the
> results will be commented out. And yes, they'll be visible by the client.
> 
> <%--  --%>
> The JSP is not evaluated and the commented part will not be sent to the
> resulting HTML page
> 
> At least I think.. :)
> 
> Andrej

 will be sent to the client. Whether it will be visible
depends on what are you sending to the client. If plain text, then it will
be visible. If HTML, it will become a HTML comment. Unless your 
generates something like this -->Hi!

RE: Design question - Action Form vs Business Delegates/Value Objects

[Sobkowski, Andrej]

Michelle,

thanks for your reply... but I'm not sure I understand your answer. Probably
my message wasn't clear.

To use an example, I have:

EmployeeForm extends ActionForm
+getName():String
+getAge():String
+getDateOfBirth():String

EmployeeVO
+getName():String
+getAge():Integer
+getDateOfBirth():Date

EmployeeForm is a simple Struts mapping of the data displayed on the HTML
page. EmployeeVO is the intermediate value/business object where the fields
have a "real" meaning (a Date is a Date).

I don't see the reasons of making EmployeeVO an instance variable of
EmployeeForm. And EmployeeVO can not be used directly inside Struts to map
data from an HttpRequest because (I think) that only Strings (and int?) can
be handled in ActionForms.

My question was somehow: should I get rid of EmployeeVO? It certainly makes
the application cleaner but it may just be a "picky thing" that will simply
waste resources.

Thanks.

Andrej
-Original Message-
From: Michelle Popovits [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 4:13 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: Design question - Action Form vs Business Delegates/Value
Objects


Hi,

I suggest to not duplicate variables that are in your Value Objects in your 
form object.  Instead include the value object as a member of the the form 
object.

ie.

Form class - below the AccountVo is a value object within the form bean

public class AddAccountForm extends ActionForm {


  public AccountVo getAccount() {
return account;
  }

  public void setAccount(AccountVo aAccount) {
account = aAccount;
  }


}

Then, in your jsp you reference the accountvo members like so using the dot 
notation -- the property "account.password" gets converted to 
getAccount().getPassword() or getAccount().setPassword(value).





This feature of struts/javabeans is a real time saver in terms of 
development.  Once something is in a value object then that value object 
gets passed from the back-end all the way to the front end without needing 
to touch any of it's attributes.  And if you're editing the data on a web 
page when you submit the page the new data automatically gets set into the 
value object which can then be passed to the back end (no unnecessary 
handling of the data).

HTH,
Michelle

>From: "Sobkowski, Andrej" <[EMAIL PROTECTED]>
>Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
>To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
>Subject: Design question - Action Form vs Business Delegates/Value Objects
>Date: Thu, 22 Nov 2001 13:28:05 -0500
>
>Hello,
>
>we're working on a quite large project with J2EE (including EJBs) and we're
>using Struts (we're still in the early phases). To design a "clean"
>application, I've defined different "object conversions":
>* Request phase
>- the ActionForm is converted to a Value Object
>- the Value Object is passed to the EJBs
>* Response phase
>- the EJBs return one ore more Value Objects
>- the Value Object(s) is (are) converted back to ActionForms.
>
>I think it's a good approach, but:
>- my ActionForm and Value Objects have an almost identical interface. The
>main difference is that the ActionForm instance variables are always of 
>type
>String while for the Value Object  have "final types" information (Date,
>Integer, whatever)
>- the conversion "ActionForm to VO" and back is slowing down the 
>performance
>as my EJBs often return hundreds of VOs (each one to be converted to an
>ActionForm).
>I know this can be improved by using paging (Page-by-Page iterator) on both
>the back-end and the front-end; furthermore, I've written a small "mapper"
>that uses extensively the Reflection API to automatically perform the
>mapping and this probably has an impact on the overall performance.
>
>My question is: what are the best practices for this type of issues? Does
>anybody have the same problems? Should I reduce the level of abstraction
>between the layers?
>
>Thank you!
>
>Andrej
>
>PS. if you're interested, I can share the simple mapper. It's a very small
>mapper (less than 15k) that works fine with my app. It's waaay less
>complete than the mapper on Ted Husted's site but...
>
>-Original Message-
>From: Jon.Ridgway [mailto:[EMAIL PROTECTED]]
>Sent: Thursday, November 22, 2001 12:10 PM
>To: 'Struts Users Mailing List'
>Subject: RE: design question
>
>
>
>
>-Original Message-
>From: M`ris Orbid`ns [mailto:[EMAIL PROTECTED]]
>Sent: 22 November 2001 16:54
>To: Struts-list (E-mail)
>Subject: design question
>
>Hello
>
>I have several questions about design, "best practises":
>
>1)  Where to store client's profile information (like login name) ?
>session  or system state bean ?
>
>Use the HttpSession. But be aware that you should put as little as possible
>into the session. Large sessions do not work well in a cluster.
>
>2)  How to create and use a system state bean ?
>
>System state bean should be in scope "session", shouldnt it ?
>
>Again put as little a

Re: Design question - Action Form vs Business Delegates/Value Objects

[Michelle Popovits]

Hi,

I suggest to not duplicate variables that are in your Value Objects in your 
form object.  Instead include the value object as a member of the the form 
object.

ie.

Form class - below the AccountVo is a value object within the form bean

public class AddAccountForm extends ActionForm {


  public AccountVo getAccount() {
return account;
  }

  public void setAccount(AccountVo aAccount) {
account = aAccount;
  }


}

Then, in your jsp you reference the accountvo members like so using the dot 
notation -- the property "account.password" gets converted to 
getAccount().getPassword() or getAccount().setPassword(value).





This feature of struts/javabeans is a real time saver in terms of 
development.  Once something is in a value object then that value object 
gets passed from the back-end all the way to the front end without needing 
to touch any of it's attributes.  And if you're editing the data on a web 
page when you submit the page the new data automatically gets set into the 
value object which can then be passed to the back end (no unnecessary 
handling of the data).

HTH,
Michelle

>From: "Sobkowski, Andrej" <[EMAIL PROTECTED]>
>Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
>To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
>Subject: Design question - Action Form vs Business Delegates/Value Objects
>Date: Thu, 22 Nov 2001 13:28:05 -0500
>
>Hello,
>
>we're working on a quite large project with J2EE (including EJBs) and we're
>using Struts (we're still in the early phases). To design a "clean"
>application, I've defined different "object conversions":
>* Request phase
>- the ActionForm is converted to a Value Object
>- the Value Object is passed to the EJBs
>* Response phase
>- the EJBs return one ore more Value Objects
>- the Value Object(s) is (are) converted back to ActionForms.
>
>I think it's a good approach, but:
>- my ActionForm and Value Objects have an almost identical interface. The
>main difference is that the ActionForm instance variables are always of 
>type
>String while for the Value Object  have "final types" information (Date,
>Integer, whatever)
>- the conversion "ActionForm to VO" and back is slowing down the 
>performance
>as my EJBs often return hundreds of VOs (each one to be converted to an
>ActionForm).
>I know this can be improved by using paging (Page-by-Page iterator) on both
>the back-end and the front-end; furthermore, I've written a small "mapper"
>that uses extensively the Reflection API to automatically perform the
>mapping and this probably has an impact on the overall performance.
>
>My question is: what are the best practices for this type of issues? Does
>anybody have the same problems? Should I reduce the level of abstraction
>between the layers?
>
>Thank you!
>
>Andrej
>
>PS. if you're interested, I can share the simple mapper. It's a very small
>mapper (less than 15k) that works fine with my app. It's waaay less
>complete than the mapper on Ted Husted's site but...
>
>-Original Message-
>From: Jon.Ridgway [mailto:[EMAIL PROTECTED]]
>Sent: Thursday, November 22, 2001 12:10 PM
>To: 'Struts Users Mailing List'
>Subject: RE: design question
>
>
>
>
>-Original Message-
>From: M`ris Orbid`ns [mailto:[EMAIL PROTECTED]]
>Sent: 22 November 2001 16:54
>To: Struts-list (E-mail)
>Subject: design question
>
>Hello
>
>I have several questions about design, "best practises":
>
>1)  Where to store client's profile information (like login name) ?
>session  or system state bean ?
>
>Use the HttpSession. But be aware that you should put as little as possible
>into the session. Large sessions do not work well in a cluster.
>
>2)  How to create and use a system state bean ?
>
>System state bean should be in scope "session", shouldnt it ?
>
>Again put as little as possible in the session and avoid statefull session
>beans. If you must put a bean in the session, make it as small as possible,
>ideally it would just hold key info that can be used to request beans at
>request level when needed. This is a trade off between performance and
>scalability.
>
>3) Where to put business logic (where I invoke JDBC) ?
>   Should business logic class be a bean ?
>
>If you have an app server business logic should go into a stateless session
>bean (BusinessService), which is invoked (via a BusinessDelegate) from a
>struts Action class. If you are not using EJBs then the Action class should
>still invoke a business delegate, but the delegate would simply create a
>normal Java bean to act as the Business Service. The business service
>(Stateless EJB or Java Bean) should delegate to another class to access a
>datasource. If your are using EJBs this should be a CMP or BMP+DAO 
>depending
>on your app server (EJB 2 compliant consider CMP, else try CMP if supported
>but be prepared to subclass to a BMP+DAO at a later date).
>
>thanx in advance
>Maris Orbidans
>
>
>Jon Ridgway.
>
>--
>To unsubscribe, e-mail:
>
>

dynamic images

[Henrick Chua]

Hi! 

how can I display images whose source URL comes from the database? and how
can I display it's corresponding alt property?

I keep getting an error message on this code:

" width="168.5"
height="88" border="1"  align="texttop" alt ="bean:write name="card"
property="imageDescription" />

thanx.

h

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RE: comments

[Sobkowski, Andrej]

Careful:


The JSP tag will be evaluated (though not shown on the browser since the
results will be commented out. And yes, they'll be visible by the client.

<%--  --%>
The JSP is not evaluated and the commented part will not be sent to the
resulting HTML page

At least I think.. :)

Andrej


-Original Message-
From: Maris Orbidans [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 1:27 PM
To: Struts Users Mailing List
Subject: RE: comments





Both comments will work, but   will be visible by client (as
HTML comment).

<%-- --%>  will be ignored completely.

Maris



-Original Message-
From: Gregor Rayman [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 8:16 PM
To: Struts Users Mailing List
Subject: Re: comments



No!

JSP Comments are not  but <%-- --%>

--
gR

- Original Message -
From: "Maris Orbidans" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 7:14 PM
Subject: RE: comments


>
> Yes
>
> JSP have the same comment
>
> Maris
>
> -Original Message-
> From: Henrick Chua [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 8:12 PM
> To: Struts Users Mailing List (E-mail)
> Subject: comments
>
>
> hi all!
> how can I comment out struts code?
> do i do it like any other html comments?
>
> 
>
> thanx
>
> h
>
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
>
>
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>


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Design question - Action Form vs Business Delegates/Value Objects

[Sobkowski, Andrej]

Hello,

we're working on a quite large project with J2EE (including EJBs) and we're
using Struts (we're still in the early phases). To design a "clean"
application, I've defined different "object conversions":
* Request phase
- the ActionForm is converted to a Value Object
- the Value Object is passed to the EJBs
* Response phase
- the EJBs return one ore more Value Objects
- the Value Object(s) is (are) converted back to ActionForms.

I think it's a good approach, but:
- my ActionForm and Value Objects have an almost identical interface. The
main difference is that the ActionForm instance variables are always of type
String while for the Value Object  have "final types" information (Date,
Integer, whatever)
- the conversion "ActionForm to VO" and back is slowing down the performance
as my EJBs often return hundreds of VOs (each one to be converted to an
ActionForm).
I know this can be improved by using paging (Page-by-Page iterator) on both
the back-end and the front-end; furthermore, I've written a small "mapper"
that uses extensively the Reflection API to automatically perform the
mapping and this probably has an impact on the overall performance.

My question is: what are the best practices for this type of issues? Does
anybody have the same problems? Should I reduce the level of abstraction
between the layers?

Thank you!

Andrej

PS. if you're interested, I can share the simple mapper. It's a very small
mapper (less than 15k) that works fine with my app. It's waaay less
complete than the mapper on Ted Husted's site but...

-Original Message-
From: Jon.Ridgway [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 12:10 PM
To: 'Struts Users Mailing List'
Subject: RE: design question




-Original Message-
From: M`ris Orbid`ns [mailto:[EMAIL PROTECTED]] 
Sent: 22 November 2001 16:54
To: Struts-list (E-mail)
Subject: design question

Hello

I have several questions about design, "best practises":

1)  Where to store client's profile information (like login name) ?
session  or system state bean ?

Use the HttpSession. But be aware that you should put as little as possible
into the session. Large sessions do not work well in a cluster.

2)  How to create and use a system state bean ?

System state bean should be in scope "session", shouldnt it ?

Again put as little as possible in the session and avoid statefull session
beans. If you must put a bean in the session, make it as small as possible,
ideally it would just hold key info that can be used to request beans at
request level when needed. This is a trade off between performance and
scalability.

3) Where to put business logic (where I invoke JDBC) ?  
Should business logic class be a bean ?

If you have an app server business logic should go into a stateless session
bean (BusinessService), which is invoked (via a BusinessDelegate) from a
struts Action class. If you are not using EJBs then the Action class should
still invoke a business delegate, but the delegate would simply create a
normal Java bean to act as the Business Service. The business service
(Stateless EJB or Java Bean) should delegate to another class to access a
datasource. If your are using EJBs this should be a CMP or BMP+DAO depending
on your app server (EJB 2 compliant consider CMP, else try CMP if supported
but be prepared to subclass to a BMP+DAO at a later date).

thanx in advance
Maris Orbidans


Jon Ridgway.

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Ant in VAJ 3.5.3

[Carmen Florea]

Hello, 

I am trying to build Struts from source, in VAJ 3.5.3.
Do I need to install "ANT" in my workspace ? 

Thank you,
C.


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RE: comments

[Maris Orbidans]

Both comments will work, but   will be visible by client (as
HTML comment).

<%-- --%>  will be ignored completely.

Maris



-Original Message-
From: Gregor Rayman [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 8:16 PM
To: Struts Users Mailing List
Subject: Re: comments



No!

JSP Comments are not  but <%-- --%>

--
gR

- Original Message -
From: "Maris Orbidans" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 7:14 PM
Subject: RE: comments


>
> Yes
>
> JSP have the same comment
>
> Maris
>
> -Original Message-
> From: Henrick Chua [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 8:12 PM
> To: Struts Users Mailing List (E-mail)
> Subject: comments
>
>
> hi all!
> how can I comment out struts code?
> do i do it like any other html comments?
>
> 
>
> thanx
>
> h
>
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
>
>
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>


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RE: maxlength

[Leo Grove]

try ezverify at ezverify.com. It's currently beta, but it will apply length
restictions on textarea tags on the server-side.

Leo

-Original Message-
From: Mahesh Agarwal [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 7:04 AM
To: [EMAIL PROTECTED]
Subject: maxlength


hi all

we dont have any maxlength attribute for textArea in struts, can anyone tell
me how to give a restriction on input characters on text area field

thanks a lot in advance
mahesh

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Re: comments

[Gregor Rayman]

No!

JSP Comments are not  but <%-- --%>

--
gR

- Original Message -
From: "Maris Orbidans" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 7:14 PM
Subject: RE: comments


>
> Yes
>
> JSP have the same comment
>
> Maris
>
> -Original Message-
> From: Henrick Chua [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 22, 2001 8:12 PM
> To: Struts Users Mailing List (E-mail)
> Subject: comments
>
>
> hi all!
> how can I comment out struts code?
> do i do it like any other html comments?
>
> 
>
> thanx
>
> h
>
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
>
>
>
> --
> To unsubscribe, e-mail:

> For additional commands, e-mail:

>


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RE: comments

[Maris Orbidans]

Yes

JSP have the same comment

Maris

-Original Message-
From: Henrick Chua [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 8:12 PM
To: Struts Users Mailing List (E-mail)
Subject: comments


hi all!
how can I comment out struts code?
do i do it like any other html comments?



thanx

h

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comments

[Henrick Chua]

hi all!
how can I comment out struts code?
do i do it like any other html comments?



thanx

h

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RE: placing a value to a button

[Henrick Chua]

thanx.

-Original Message-
From: Maris Orbidans [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 9:41 AM
To: Struts Users Mailing List
Subject: RE: placing a value to a button






Maris

-Original Message-
From: Henrick Chua [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 7:38 PM
To: Struts Users Mailing List (E-mail)
Subject: placing a value to a button


Hi! 

How can I place a value which is read from the
applicationresource.properties to a button? Coz it gives me an error
message
when i try to do this:

"  />

Thanx in advance

h


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RE: placing a value to a button

[Maris Orbidans]

Maris

-Original Message-
From: Henrick Chua [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 7:38 PM
To: Struts Users Mailing List (E-mail)
Subject: placing a value to a button


Hi! 

How can I place a value which is read from the
applicationresource.properties to a button? Coz it gives me an error
message
when i try to do this:

"  />

Thanx in advance

h


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placing a value to a button

[Henrick Chua]

Hi! 

How can I place a value which is read from the
applicationresource.properties to a button? Coz it gives me an error message
when i try to do this:

"  />

Thanx in advance

h


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RE: OFFT: base for file reading in WEB apps

[Maris Orbidans]

Hi Gundars

I have used new FileInputStream("servlet.properties") with no problems
but then servlet.properties should be in
Tomcat /bin directory. Method
getClass().getResourceAsStream("servlet.properties"); will work if you
have the file 
in the classpath.

regards

Maris Orbidans
DataPro


private String getPropertyFromFile(String name) throws ServletException
{
try {
Properties dbProps = new Properties();
// InputStream propStream =
getClass().getResourceAsStream("/servlet.properties");
InputStream propStream = new
FileInputStream("servlet.properties");
dbProps.load(propStream);
String param = dbProps.getProperty(name);
propStream.close();
return param;
}
catch (Exception e) {
log("Error loading properties"+e.toString());
throw new ServletException();
}
}


-Original Message-
From: Kevin A. Palfreyman [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 7:21 PM
To: Struts Users Mailing List
Subject: RE: OFFT: base for file reading in WEB apps


Be careful here - getRealPath() can return null when the application is
deployed in a WAR if the app server does not expand it (some app server
do in fact serve the files straight from the WAR).  I got bitten by this
recently.

Instead try looking at the getResource() and getResourceAsStream()
methods.

Kev

> -Original Message-
> From: "Moritz Björn-Hendrik, HH" [mailto:[EMAIL PROTECTED]]
> Sent: 22 November 2001 14:42
> To: 'Struts Users Mailing List'
> Subject: AW: OFFT: base for file reading in WEB apps
> 
> 
> Hi Gundars,
> 
> you can get the Base-Path by using the
> getServletContext().getRealPath("")-Method in the ActionServlet.
> 
> Björn
> 
> > -Ursprüngliche Nachricht-
> > Von:Gundars Kulups [SMTP:[EMAIL PROTECTED]]
> > Gesendet am:Donnerstag, 22. November 2001 15:12
> > An: [EMAIL PROTECTED]
> > Betreff:OFFT: base for file reading in WEB apps
> > 
> > Hi!
> > I know that this is totally off topic, but what is file 
> base for file 
> > operations for classes running in servlet container (Tomcat 
> in my case). 
> > For example if I have app.properties file in WEB-INF directory, what
> > should 
> > be the path I need to use to open this file?
> > 
> > WBR,
> > 
> > Gundars Kulups
> > Project manager
> > A/S Dati
> > Phone: +371-7067713
> > Mobile: +371-9466055
> > Fax: +371-7619573
> > 
> > 
> > --
> > To unsubscribe, e-mail:
> > 
> > For additional commands, e-mail:
> > 
> 
> --
> To unsubscribe, e-mail:   
> 
> For additional commands, e-mail: 
> 
> 
> 


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Re: another beginner's question - solved

[Dalibor Kezele]

> Another day, another question.
> Why are my form data destroyed?
> 
> I have 2 forms.
> When I fill wrong data into 1st form and click html:submit data are here.
> But when I click "back" on 2nd form and come back to the 1st one data are
> missing.

SOLVED:
>From 2nd form I go back with link to .jsp, not link to .do



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RE: Struts salability

[Emaho, Ghoot]

Hi

I have received a number of emails asking for more detailed info on our
perfromance metrics and tuning techniques as well as our architecture
and deployment hardware.

I will endeavour to post details over the next few days, but as a
prelude here are some things to ponder over.

As previously stated, in our experience, the usage of Struts didnt even
factor into our tuning work as with large scale systems there are so
many other things that can impede performance that Struts effect was
negligable at most ! However, I understand that initially this can be a
concern for developers and especially management. But with experience it
is clear that Struts is definately an aid and not a hindrance or
impediment to performance. I will provide as much detail as I can to
demonstrate this clearly.

To put it into perspective for some of you who have requested details on
our techniques and strategies - we had a team working on optimisation
over a period of several months. This is not a trivial exercise ! I can
give you pointers on best practises, but it should be stated that this
is a topic for very experienced and brave developers ![we deployed the
first production EJB Web application in the UK when EJBs were pre 1.0]
Also I dont want to get anyone's hopes up that I'll provide you with
exact methodologies that will solve all problems - it'd take too long
and this mail group isnt really a suitable forum. Suffice to say that it
is a job which requires rigorous attention to detail and is never a one
man job [in our experience]

Anyway, I just wanted to post an initial response to the mail I had
received and to let people know I will respond - but you will have to be
a little patient with me ! I will try and produce as helpful a guide as
possible, but it will be a couple of days at least before something
appears here (i have a job to do  !)

When you consider such factors as Architecture, Application Design, EJB
usage, Database Design, Network Infrastructure [our deployed
environments include bandwidths from 56k to 10M, including Satellite
links !], as well as Standard of Coding and usage of Industry Best
Practises, Application Server/Web Server choice, hardware, (breath in),
the usage of Struts is wy down the list of things that can affect
performance. [and that list is by no means complete - just a few off the
top of my head]

Thanks

Ghoot Emaho

PS For those you emailed me in person, I will respond in person, but
again, give me a few days. Thanks.


> -Original Message-
> From: Kevin A. Palfreyman [mailto:[EMAIL PROTECTED]]
> Sent: 22 November 2001 13:40
> To: Struts Users Mailing List
> Subject: RE: Struts salability
> 
> 
> Hi 
> 
> I'd be very interested in any performance figures you can provide, and
> the type of architecture you have deployed to ensure performance and
> scalability.
> 
> I'm currently considering struts for a large project, and 
> finding large
> commercial deployments for reference is hard.  Also if you could give
> any info on the servers you are using, that would be appreciated.
> 
> Thanks in advance,
> 
>   Kev
> 
> > -Original Message-
> > From: Emaho, Ghoot [mailto:[EMAIL PROTECTED]]
> > Sent: 22 November 2001 09:30
> > To: Struts Users Mailing List
> > Subject: RE: Struts salability
> > 
> > 
> > We have a system in production which serves the entire North Sea
> > Offshore and Onshore Installations for BP, serving several thousand
> > concurrent users and performance is excellent (i can provide 
> > metrics if
> > you are interested) - although we did have to do the neccessary
> > performance tuning. Generally we found that Struts is the 
> > least of your
> > worries when it comes to large scale enterprise deployments -
> > particularly if your software involves EJBs. If you or anyone 
> > else would
> > like anymore info, i'd be happy to share more details.
> > 
> > On another note, details of the previously mentioned Chiki 
> Wiki built
> > with Struts will be posted soon - the prototype will be 
> available over
> > the web shortly.
> > 
> > Cheers
> > 
> > Ghoot Emaho
> > Software Development Team Leader
> > www.petrotechnics.com
> > 
> > 
> > > -Original Message-
> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> > > Sent: 21 November 2001 18:04
> > > To: [EMAIL PROTECTED]
> > > Subject: Struts salability
> > > 
> > > 
> > > 
> > > 
> > > Does anybody know of any issues with Struts with respect to 
> > > salability ?
> > > Is a multiple servlet solution more scalable ?
> > > 
> > > Many Thanks
> > > 
> > > Alan
> > > 
> > > 
> > > 
> > > --
> > > To unsubscribe, e-mail:   
> > > 
> > > For additional commands, e-mail: 
> > > 
> > > 
> > > 
> > 
> > --
> > To unsubscribe, e-mail:   
> > 
> > For additional commands, e-mail: 
> > 
> > 
> > 
> 

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RE: OFFT: base for file reading in WEB apps

[Kevin A. Palfreyman]

Be careful here - getRealPath() can return null when the application is
deployed in a WAR if the app server does not expand it (some app server
do in fact serve the files straight from the WAR).  I got bitten by this
recently.

Instead try looking at the getResource() and getResourceAsStream()
methods.

Kev

> -Original Message-
> From: "Moritz Björn-Hendrik, HH" [mailto:[EMAIL PROTECTED]]
> Sent: 22 November 2001 14:42
> To: 'Struts Users Mailing List'
> Subject: AW: OFFT: base for file reading in WEB apps
> 
> 
> Hi Gundars,
> 
> you can get the Base-Path by using the
> getServletContext().getRealPath("")-Method in the ActionServlet.
> 
> Björn
> 
> > -Ursprüngliche Nachricht-
> > Von:Gundars Kulups [SMTP:[EMAIL PROTECTED]]
> > Gesendet am:Donnerstag, 22. November 2001 15:12
> > An: [EMAIL PROTECTED]
> > Betreff:OFFT: base for file reading in WEB apps
> > 
> > Hi!
> > I know that this is totally off topic, but what is file 
> base for file 
> > operations for classes running in servlet container (Tomcat 
> in my case). 
> > For example if I have app.properties file in WEB-INF directory, what
> > should 
> > be the path I need to use to open this file?
> > 
> > WBR,
> > 
> > Gundars Kulups
> > Project manager
> > A/S Dati
> > Phone: +371-7067713
> > Mobile: +371-9466055
> > Fax: +371-7619573
> > 
> > 
> > --
> > To unsubscribe, e-mail:
> > 
> > For additional commands, e-mail:
> > 
> 
> --
> To unsubscribe, e-mail:   
> 
> For additional commands, e-mail: 
> 
> 
> 

RE: design question

[Jon.Ridgway]

-Original Message-
From: M`ris Orbid`ns [mailto:[EMAIL PROTECTED]] 
Sent: 22 November 2001 16:54
To: Struts-list (E-mail)
Subject: design question

Hello

I have several questions about design, "best practises":

1)  Where to store client's profile information (like login name) ?
session  or system state bean ?

Use the HttpSession. But be aware that you should put as little as possible
into the session. Large sessions do not work well in a cluster.

2)  How to create and use a system state bean ?

System state bean should be in scope "session", shouldnt it ?

Again put as little as possible in the session and avoid statefull session
beans. If you must put a bean in the session, make it as small as possible,
ideally it would just hold key info that can be used to request beans at
request level when needed. This is a trade off between performance and
scalability.

3) Where to put business logic (where I invoke JDBC) ?  
Should business logic class be a bean ?

If you have an app server business logic should go into a stateless session
bean (BusinessService), which is invoked (via a BusinessDelegate) from a
struts Action class. If you are not using EJBs then the Action class should
still invoke a business delegate, but the delegate would simply create a
normal Java bean to act as the Business Service. The business service
(Stateless EJB or Java Bean) should delegate to another class to access a
datasource. If your are using EJBs this should be a CMP or BMP+DAO depending
on your app server (EJB 2 compliant consider CMP, else try CMP if supported
but be prepared to subclass to a BMP+DAO at a later date).

thanx in advance
Maris Orbidans


Jon Ridgway.

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design question

[Màris Orbidàns]

Hello

I have several questions about design, "best practises":

1)  Where to store client's profile information (like login name) ?
session  or system state bean ?

2)  How to create and use a system state bean ?

System state bean should be in scope "session", shouldnt it ?

3) Where to put business logic (where I invoke JDBC) ?  
Should business logic class be a bean ?

thanx in advance
Maris Orbidans



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Question ...RE: Want to check user is logged in every page server

[Barry Jia]

Hi, Actually I encountered same problem and solved it as this way,but I have
another question.
In my logon action, I set up the session max inactive Interval like this
request.getSession().setMaxInactiveInterval(900),
I think the unit should be second(not sure). The problem is that how can I
disable the flash for my logon page ?
when I flash logon.do, the browser shows that this page can not be flashed,
but I did, I still get the old session alive,the logon session is still
availabe. I means once I logon, even I restart my server, I can still flash
my jsp page to got my logon page available,the logon is still available,
what I hope to display the session is expired and need to logon again, I am
still studying how to do that? nay body has any idea?
thanks first!
Barry

-Original Message-
From: Thorsten Frank [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 22, 2001 10:10 AM
To: Struts Users Mailing List
Subject: Re: Want to check user is logged in every page server


create a bean that represents a user during the login-action processing. add
it to the session in your action.
on every following page, do a check for a bean representing the user. if not
present, do a forward to the login-page.



To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Tuesday, November 20, 2001 10:41 AM
Subject: Want to check user is logged in every page server


: Hi
:
: Everytime a page is served from my Struts application, I want to check
: to make sure the user is logged in.  If they are not then I want to send
: them to the login screen.  What is the best way to go about this using
: Struts?
:
: Cheers
:
: Tony
:
:
: --
: To unsubscribe, e-mail:

: For additional commands, e-mail:

:


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RE: All the jar files cann't be read

[Lily Zou]

 I put the struts.jar file in that folder and put it into my classpath.
Maybe that is the reason why it shows that path. May I ask where I could
config this ?

 By the way, I still got blank page but if I click "view source", I can see
all the jsp code is there, which means that all the taglib or related lib
files could not be found or linked.  I think I put all the lib files in
right place. May I ask where I could config this path other than at the top
of each JSP page ?

 Tons of thanks.

 Lily

-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 6:04 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


That's a normal message in startup. However, the directory looks a bit
suspect - there should be a WEB-INF/lib somewhere in there. eg here is mine:
register('-//Apache Software Foundation//DTD Struts Configuration 1.0//EN',
'jar:file:/home/bporter/cvs/shopping/product-db/tomcat/webapps/shopping/WEB-
INF/lib/struts.jar!/org/apache/struts/resources/struts-config_1_0.dtd'

for me, CATALINA_BASE = /home/bporter/cvs/shopping/product-db/tomcat

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:24 AM
To: Struts Users Mailing List
Subject: RE: All the jar files cann't be read


  Thank you very much, Brett. The jar file did corrupted even though I just
copied from somewhere else. This time I got:  


   register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN', 
 
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

New org.apache.struts.action.ActionMapping


   May I ask why I got this ?

   
Lily


-Original Message-
From: Brett Porter [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 21, 2001 5:09 PM
To: 'Struts Users Mailing List'
Subject: RE: All the jar files cann't be read


My guess is that it got corrupted in the download, or perhaps because you
have two paths in the webapp name (s2100\si) - I've never seen that before,
not sure if it should work.

Can you unjar the struts.jar file manually into a temp dir to check it is
not corrupt?

- Brett

-Original Message-
From: Lily Zou [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 22 November 2001 9:06 AM
To: 'Struts Users Mailing List'
Subject: All the jar files cann't be read


I put struts.jar and commons-*.jar file under WEB-INF\lib folder.
However every time I started tomcat, I got following error msg ( every time
it complains different jar file name ) and the page is just blank.   Could
anybody tell me what is the most likely reseason for this ? I am the first
person in my company to try struts so I have no help around. Looking forward
to any advice.  

cannot load servlet name: jsp:
C:\opt\redknee\product\s2100\1_0_1\webapps\s2100\si\WEB-INF\lib\struts.jar
is not a directory or zip/jar file or if it's a zip/ja
r file then it is corrupted.

register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

resolveEntity('-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN',
'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')
 Resolving to alternate DTD
'jar:file:/C:/opt/redknee/product/s2100/1_0_1/lib/struts.jar!/org/apache/str
uts/resources/struts-config_1_0.dtd'

 New org.apache.struts.action.ActionMapping

 Set org.apache.struts.action.ActionMapping properties

Call
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/
addFormBean, type=org.apache.struts.actions.AddFormBeanAction])

Pop org.apache.struts.action.ActionMapping


   
Lily 




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Re: Want to check user is logged in every page server

[Thorsten Frank]

create a bean that represents a user during the login-action processing. add
it to the session in your action.
on every following page, do a check for a bean representing the user. if not
present, do a forward to the login-page.



To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Tuesday, November 20, 2001 10:41 AM
Subject: Want to check user is logged in every page server


: Hi
:
: Everytime a page is served from my Struts application, I want to check
: to make sure the user is logged in.  If they are not then I want to send
: them to the login screen.  What is the best way to go about this using
: Struts?
:
: Cheers
:
: Tony
:
:
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AW: OFFT: base for file reading in WEB apps

["Moritz Björn-Hendrik, HH"]

Hi Gundars,

you can get the Base-Path by using the
getServletContext().getRealPath("")-Method in the ActionServlet.

Björn

> -Ursprüngliche Nachricht-
> Von:  Gundars Kulups [SMTP:[EMAIL PROTECTED]]
> Gesendet am:  Donnerstag, 22. November 2001 15:12
> An:   [EMAIL PROTECTED]
> Betreff:  OFFT: base for file reading in WEB apps
> 
> Hi!
> I know that this is totally off topic, but what is file base for file 
> operations for classes running in servlet container (Tomcat in my case). 
> For example if I have app.properties file in WEB-INF directory, what
> should 
> be the path I need to use to open this file?
> 
> WBR,
> 
> Gundars Kulups
> Project manager
> A/S Dati
> Phone: +371-7067713
> Mobile: +371-9466055
> Fax: +371-7619573
> 
> 
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Re: Weblogic pains...

[Sean Owen]

I've never seen the errors you are getting, sorry... I've seen Struts work
with Weblogic for what that's worth. Since the JSP exceptions aren't very
helpful I might resort to debugging it line by line! See where Struts is
really complaining.

Regarding double quotes, I guess I was thinking of XML... sure enough single
quotes are OK with JSP; I learn something new every day.

- Original Message -
From: "Mark Schenk" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 1:06 PM
Subject: RE: Weblogic pains...


> >
> > Do you not have to give the form a name?
> >
>
> Nope, struts uses the default bean defined in struts-config:
>
>  name="whateverformbean"
> scope="request"
> ...
>
> And the form bean works... (as it IS created when I run it in tomcat...)
>
>
> PS. You had me worried about having to use double quotes so I looked it up
> the jsp-specs: section 2.1.5 states you can use both single and double
> quotes.
>
> --
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> Mark Schenk | Ceci n'est pas une signature
> Blackboard Project Manager  |
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> Dept.: DTO  |Phone:  +31 152785448 (85448)
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Re: HelloWorld example

[Alexey Kovjazin]

Thank you, Martin!
- Original Message -
From: "Mooslechner Martin" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: 11/22/2001 4:56 PM
Subject: AW: HelloWorld example


> Hi,
>
> you might want to check out some of the links that you can find at
>
> http://www.husted.com/struts/resources.htm#tutorials
>
> there are a couple of tutorials listed which really help you to "get
> started"
> (e.g the "Welcome to the Struts Framework by Bluestone Software" link).
>
> good luck,
> Martin
>
>
> -Ursprungliche Nachricht-
> Von: Alexey Kovjazin [mailto:[EMAIL PROTECTED]]
> Gesendet: Donnerstag, 22. November 2001 14:51
> An: [EMAIL PROTECTED]
> Betreff: HelloWorld example
>
>
> Hello, Struts guru!
> I am a "dummy" in Struts technology. Can anyone please send me some urls
or
> docs of simple HelloWorld Struts-example?
> The example in Struts distibution is too sophisticated for "getting
> started".
> With best wishes,
> Alexey.
>
>
> --
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RE: Log4J and Struts

[Tom Klaasen (TeleRelay)]

OK, didn't know that. I've only used Tomcat so far (and SilverStream in
a dark and far-away past)

tomK


> -Original Message-
> From: Stefano Mancarella [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 15:22
> To: Struts Users Mailing List
> Subject: Re: Log4J and Struts
> 
> 
> > Startup servlet? I have no need for that one - either you name your
> > property file log4j.properties, or you specify the 
> environment variable
> > log4j.configuration, and log4j will pick it up by itself.
> 
> Remember that this doesn't work if log4j as been already configured
> elsewhere. F.e. this happens if you use JBoss with embedded 
> Tomcat (which
> uses log4j for its own logging purposes).
> The init servlet approach is guaranteed to work everytime and 
> everywhere,
> that's why I prefer it.
> 
> 
> 
> --
> To unsubscribe, e-mail:   
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> additional commands, 
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Re: Log4J and Struts

[Stefano Mancarella]

> Startup servlet? I have no need for that one - either you name your
> property file log4j.properties, or you specify the environment variable
> log4j.configuration, and log4j will pick it up by itself.

Remember that this doesn't work if log4j as been already configured
elsewhere. F.e. this happens if you use JBoss with embedded Tomcat (which
uses log4j for its own logging purposes).
The init servlet approach is guaranteed to work everytime and everywhere,
that's why I prefer it.



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OFFT: base for file reading in WEB apps

[Gundars Kulups]

Hi!
I know that this is totally off topic, but what is file base for file 
operations for classes running in servlet container (Tomcat in my case). 
For example if I have app.properties file in WEB-INF directory, what should 
be the path I need to use to open this file?

WBR,

Gundars Kulups
Project manager
A/S Dati
Phone: +371-7067713
Mobile: +371-9466055
Fax: +371-7619573


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AW: HelloWorld example

[Mooslechner Martin]

Hi, 

you might want to check out some of the links that you can find at

http://www.husted.com/struts/resources.htm#tutorials

there are a couple of tutorials listed which really help you to "get
started"
(e.g the "Welcome to the Struts Framework by Bluestone Software" link).

good luck, 
Martin


-Ursprungliche Nachricht-
Von: Alexey Kovjazin [mailto:[EMAIL PROTECTED]]
Gesendet: Donnerstag, 22. November 2001 14:51
An: [EMAIL PROTECTED]
Betreff: HelloWorld example


Hello, Struts guru!
I am a "dummy" in Struts technology. Can anyone please send me some urls or
docs of simple HelloWorld Struts-example?
The example in Struts distibution is too sophisticated for "getting
started".
With best wishes,
Alexey.


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HelloWorld example

[Alexey Kovjazin]

Hello, Struts guru!
I am a "dummy" in Struts technology. Can anyone please send me some urls or docs of 
simple HelloWorld Struts-example?
The example in Struts distibution is too sophisticated for "getting started".
With best wishes,
Alexey.

RE: Struts salability

[Kevin A. Palfreyman]

Hi 

I'd be very interested in any performance figures you can provide, and
the type of architecture you have deployed to ensure performance and
scalability.

I'm currently considering struts for a large project, and finding large
commercial deployments for reference is hard.  Also if you could give
any info on the servers you are using, that would be appreciated.

Thanks in advance,

Kev

> -Original Message-
> From: Emaho, Ghoot [mailto:[EMAIL PROTECTED]]
> Sent: 22 November 2001 09:30
> To: Struts Users Mailing List
> Subject: RE: Struts salability
> 
> 
> We have a system in production which serves the entire North Sea
> Offshore and Onshore Installations for BP, serving several thousand
> concurrent users and performance is excellent (i can provide 
> metrics if
> you are interested) - although we did have to do the neccessary
> performance tuning. Generally we found that Struts is the 
> least of your
> worries when it comes to large scale enterprise deployments -
> particularly if your software involves EJBs. If you or anyone 
> else would
> like anymore info, i'd be happy to share more details.
> 
> On another note, details of the previously mentioned Chiki Wiki built
> with Struts will be posted soon - the prototype will be available over
> the web shortly.
> 
> Cheers
> 
> Ghoot Emaho
> Software Development Team Leader
> www.petrotechnics.com
> 
> 
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> > Sent: 21 November 2001 18:04
> > To: [EMAIL PROTECTED]
> > Subject: Struts salability
> > 
> > 
> > 
> > 
> > Does anybody know of any issues with Struts with respect to 
> > salability ?
> > Is a multiple servlet solution more scalable ?
> > 
> > Many Thanks
> > 
> > Alan
> > 
> > 
> > 
> > --
> > To unsubscribe, e-mail:   
> > 
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> > 
> > 
> > 
> 
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> 
> 

AW: Log4J and Struts

[Hudayioglu, Fehmi]

Hi,

We have subclassed the ActionServlet and loaded the our log4j Config
file in the servlet init() method. You can put the config where you 
like - we specify the location in a Servlet initialisation parameter. 
We prefer to use a config file since we can configure our categories in
one place. If you are just using the root category with no special appender
a config file is probably sufficient. Have fun !

Ben

-Ursprüngliche Nachricht-
Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
Gesendet am: Thursday, November 22, 2001 11:10 AM
An: Struts Users Mailing List
Betreff: RE: Log4J and Struts

Startup servlet? I have no need for that one - either you name your
property file log4j.properties, or you specify the environment variable
log4j.configuration, and log4j will pick it up by itself.

Thus I have _no_ initialization code for log4j. The only things that are
changed in my code is "import org.apache.log4j.Category;" and "private
static final Category logcat = Category.getInstance(MyClass.class);".
This is precisely what makes log4j superior to all other logging
mechanisms I've yet seen (though I have to admit I don't study them all,
because I'm more than content with log4j).

tomK


> -Original Message-
> From: juraj Lenharcik [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 11:05
> To: 'Struts Users Mailing List'
> Subject: AW: Log4J and Struts
> 
> 
> i have it in web-inf/classes and will be invoced by a startup servlet.
> 
> -Ursprüngliche Nachricht-
> Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
> Gesendet: Donnerstag, 22. November 2001 10:30
> An: Struts Users Mailing List
> Betreff: RE: Log4J and Struts
> 
> 
> Somewhere in the classpath. For Tomcat, I put it in
> TOMCAT_HOME/webapps//WEB-INF/classes
> 
> hth,
> tomK
> 
> > -Original Message-
> > From: storck [mailto:[EMAIL PROTECTED]] 
> > Sent: donderdag 22 november 2001 9:30
> > To: Struts User (E-Mail)
> > Subject: Log4J and Struts
> > 
> > 
> > Hi,
> > 
> > where must I put the config-file for Log4J so I can use log4j 
> > within struts?
> > 
> > Many thanks!
> > 
> > 
> > --
> > To unsubscribe, e-mail:   
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> > additional commands, 
> > e-mail: 
> > 
> > 
> 
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AW: maxlength

[Ronaldo . Mercado]

What I've been using (javascript) is this:




-Ursprüngliche Nachricht-
Von: Mahesh Agarwal [mailto:[EMAIL PROTECTED]]
Gesendet: Donnerstag, 22. November 2001 14:04
An: [EMAIL PROTECTED]
Betreff: maxlength


hi all

we dont have any maxlength attribute for textArea in struts, can anyone tell
me how to give a restriction on input characters on text area field

thanks a lot in advance
mahesh

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maxlength

[Mahesh Agarwal]

hi all

we dont have any maxlength attribute for textArea in struts, can anyone tell
me how to give a restriction on input characters on text area field

thanks a lot in advance
mahesh

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RE: Weblogic pains...

[Mark Schenk]

>
> Do you not have to give the form a name?
>

Nope, struts uses the default bean defined in struts-config:

mailto:[EMAIL PROTECTED]>
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AW: How to display an option(s) in a select tag as checked

[Hudayioglu, Fehmi]

Hello I used the code below




and my formbean has these properties,
private Vector listauditstatus;
private String selectedstatus;

it works quite fine. So, you don't need to do additional thing. If you want
to get a specific option, make sure that you have sent selectedstatus. For
example, manually write audit.do?selectedstatus=4
But if you don't want to send selectedstatus, you have to add value property
of .
fehmi.


-Ursprüngliche Nachricht-
Von: Roland Berger [mailto:[EMAIL PROTECTED]]
Gesendet am: Thursday, November 22, 2001 1:39 PM
An: Struts Mailinglist
Betreff: How to display an option(s) in a select tag as checked

Hi all

I have a select box with several options. I'd like that a particular option
is alredy checked when the JSP page is dispayed to the user. How to do that?

i.e.





Thank's
Roland


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General model question ?

[box]

Hi everybody,

I am new to struts, but I find them very usefull.

There is one question that bothers me.

Wy is ActionForm a class not an interface ?

I have got my own application data model and I would just need  to implement
the ActionForm to update/input the data via html forms.

But it's not possible - I must inherit the struts structure, so I have to
create ActionForm with get, set methods and after all copy all properties
between my data model and the corresponding ActionForm.

Am I misunderstanding something ?

regards

Wojtek







 
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authorisation

[box]

Anybody has examles of authorisation done by struts ActionServlet ?

regards

Wojtek

 
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How to display an option(s) in a select tag as checked

[Roland Berger]

Hi all

I have a select box with several options. I'd like that a particular option
is alredy checked when the JSP page is dispayed to the user. How to do that?

i.e.





Thank's
Roland


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Re: Weblogic pains...

[Scott Atwell]

Do you not have to give the form a name?

- Original Message -
From: "Mark Schenk" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 11:28 AM
Subject: RE: Weblogic pains...


> > Subject: Re: Weblogic pains...
> >
> >
> > Tag attributes need to be double-quoted, but I'd start by describing the
> > problem you are having! I have used Struts with WLS 5.1 and WLS
> > 6.0 and have
> > had no trouble.
> >
> > <%@page contentType="text/html"%>
> > <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
> >
> > 
> > 
> > 
> > 
>
> Oops. Staring at the problem so long I forgot to mention what it is. I get
> an
> error 500 in the browser and something like this in my log:
>
> Thu Nov 22 12:16:31 CET 2001: 
Root
> cause of ServletException
> javax.servlet.ServletException: runtime failure in custom tag 'form'
> at jsp_servlet._devinfo._jspService(_devinfo.java:111)
> at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
> at
>
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
> :106)
>
> I tried both quotes and double-quotes: no difference whatsoever.
> --
--
> Mark Schenk | Ceci n'est pas une signature
> Blackboard Project Manager  |
> Delft University of Technology  |E-mail: [EMAIL PROTECTED]
> Dept.: DTO  |Phone:  +31 152785448 (85448)
> Room: LB00.680  |Fax: +31 152786359
> --
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RE: Weblogic pains...

[Mark Schenk]

> Subject: Re: Weblogic pains...
>
>
> Tag attributes need to be double-quoted, but I'd start by describing the
> problem you are having! I have used Struts with WLS 5.1 and WLS
> 6.0 and have
> had no trouble.
>
> <%@page contentType="text/html"%>
> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
>
> 
> 
> 
> 

Oops. Staring at the problem so long I forgot to mention what it is. I get
an
error 500 in the browser and something like this in my log:

Thu Nov 22 12:16:31 CET 2001:  Root
cause of ServletException
javax.servlet.ServletException: runtime failure in custom tag 'form'
at jsp_servlet._devinfo._jspService(_devinfo.java:111)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:106)

I tried both quotes and double-quotes: no difference whatsoever.

Mark Schenk |   Ceci n'est pas une signature
Blackboard Project Manager  |
Delft University of Technology  |E-mail: [EMAIL PROTECTED]
Dept.: DTO  |Phone:  +31 152785448 (85448)
Room: LB00.680  |Fax:+31 152786359

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RE: How to Broadcast to users?

[Jen Lyn]

Definitely make you own tag for this purpose ...

Haven't tried this, but how about introducing an ActionForm super class (that 
all your current ActionForms inherit from), if you do not have one already, 
and define a restart property (I would make it some kind of a timestamp) 
there. Then make your own tag that renders some comment-box with the date and 
time of the next restart, if this property is set.

Regards,
Klaus Bucka-Lassen
aragost, Switzerland


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query

[sai srinivas]

Hello,

Please help us identify a solution to the following requirement in STRUTS
perspective:

Passing form data from one .jsp to another without sharing a common bean.


Regards
Sai



winmail.dat
Description: application/ms-tnef

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disable back button

[Tom Klaasen (TeleRelay)]

Steven Elliott,

I found this in the archives:
http://marc.theaimsgroup.com/?l=struts-user&m=100281015318025&w=2

Can you describe shortly how this works when using forms? I can't find a
way to use window.location.replace() and submitting the form to the
server at the same time.

tia,
tomK

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RE: Options tag question

[Peter Pilgrim]

Are you sure that you can see the scoped bean. Try some debugging
to the console.

<%
 System.out.println( "*ACE* news letter form bean ="+
 pageContext.findAttribute( "newsletterForm" ) );
%>

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  //_\\
"Mathematics is essentially the study of islands of  ===
disparate subjects in a sea of ignorance."   || ! ||
Andrew Wiles _


 Message History 



From: "Tricia Ong Cheah Yen" <[EMAIL PROTECTED]> on 21/11/2001 11:51 ZE8

Please respond to "Struts Users Mailing List" <[EMAIL PROTECTED]>

To:   "Struts Users Mailing List" <[EMAIL PROTECTED]>
cc:
Subject:  RE: Options tag question


Peter,
 When I used the  tag together with .
I had first define a
bean with a property that contains an ArrayList of LabelValueBeans.  But
the code fails to work. I'm getting a NullPointerException.



  
   


And btw, can someone explains to me what's the difference between scope
and toScope? thanks

+trish


-Original Message-
From: Peter Pilgrim [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 20, 2001 10:49 PM
To: Struts Users Mailing List
Subject: Re: Options tag question

Unfortunately the current  requires that you use

indirectly to use the tag.




--
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  //_\\
"Mathematics is essentially the study of islands of  ===
disparate subjects in a sea of ignorance."   || ! ||
Andrew Wiles _


 Message History



From: [EMAIL PROTECTED] on 20/11/2001 09:44 EST

Please respond to "Struts Users Mailing List"
<[EMAIL PROTECTED]>

To:   [EMAIL PROTECTED]
cc:
Subject:  Options tag question


In reworking my Action classes, I tried to package all values needed for
my
form in the form bean, so I included a property that contains an
ArrayList
of LabelValueBeans.

Can I refer to this property to populate the  tag?

This nested syntax doesn't seem to work:




Or should I go back to including the ArrayList as a request attribute
and
return it that way.

Lee






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AW: Log4J and Struts

[juraj Lenharcik]

thanks for the tip. i will try it.

- juraj

-Ursprüngliche Nachricht-
Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
Gesendet: Donnerstag, 22. November 2001 11:10
An: Struts Users Mailing List
Betreff: RE: Log4J and Struts


Startup servlet? I have no need for that one - either you name your
property file log4j.properties, or you specify the environment variable
log4j.configuration, and log4j will pick it up by itself.

Thus I have _no_ initialization code for log4j. The only things that are
changed in my code is "import org.apache.log4j.Category;" and "private
static final Category logcat = Category.getInstance(MyClass.class);".
This is precisely what makes log4j superior to all other logging
mechanisms I've yet seen (though I have to admit I don't study them all,
because I'm more than content with log4j).

tomK


> -Original Message-
> From: juraj Lenharcik [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 11:05
> To: 'Struts Users Mailing List'
> Subject: AW: Log4J and Struts
> 
> 
> i have it in web-inf/classes and will be invoced by a startup servlet.
> 
> -Ursprüngliche Nachricht-
> Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
> Gesendet: Donnerstag, 22. November 2001 10:30
> An: Struts Users Mailing List
> Betreff: RE: Log4J and Struts
> 
> 
> Somewhere in the classpath. For Tomcat, I put it in
> TOMCAT_HOME/webapps//WEB-INF/classes
> 
> hth,
> tomK
> 
> > -Original Message-
> > From: storck [mailto:[EMAIL PROTECTED]] 
> > Sent: donderdag 22 november 2001 9:30
> > To: Struts User (E-Mail)
> > Subject: Log4J and Struts
> > 
> > 
> > Hi,
> > 
> > where must I put the config-file for Log4J so I can use log4j 
> > within struts?
> > 
> > Many thanks!
> > 
> > 
> > --
> > To unsubscribe, e-mail:   
> >  [EMAIL PROTECTED]>
> > For 
> > additional commands, 
> > e-mail: 
> > 
> > 
> 
> --
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Appender like DailyRollingFileAppend, .....

[storck]

Hi,

where do I find more about the use of the DailyRollingFileAppender?
I tryed to use the RollingFileAppender and set the MaxFileSize for
testpurpose to 1kb. It created a file about 2.5kb. What did go wrong?
Does a Appender exists for example for EMail so its sends its messenges as
an email?
Is itpossible to use different categories with different appends at
different log-level so for example category c1 uses appender a1
(FileAppender) if priority is error?


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Re: Weblogic pains...

[Sean Owen]

Tag attributes need to be double-quoted, but I'd start by describing the
problem you are having! I have used Struts with WLS 5.1 and WLS 6.0 and have
had no trouble.

Sean

- Original Message -
From: "Mark Schenk" <[EMAIL PROTECTED]>
To: "Struts-User" <[EMAIL PROTECTED]>
Sent: Thursday, November 22, 2001 9:28 AM
Subject: Weblogic pains...


> I am trying to get a simple application up and running under Weblogic 5.1
> (sp 8) and getting stuck on about the first step :-(. It looks as though
> struts has problems translating mappings. This is my jsp:
>
> <%@page contentType="text/html"%>
> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
>
> 
> 
> 
> 
>
> And the corresponding entry in struts-config.xml is OK, 'cause this
displays
> a fine form tag under Tomcat. Is there some known limitation on Weblogic?
I
> am using prefix matching in my app, could this be the problem?
>
> Thanks for any input.
>
> PS Upgrading Weblogic is not an option for me: this is part of a larger
app.
> --
--
> Mark Schenk | Ceci n'est pas une signature
> Blackboard Project Manager  |
> Delft University of Technology  |E-mail: [EMAIL PROTECTED]
> Dept.: DTO  |Phone:  +31 152785448 (85448)
> Room: LB00.680  |Fax: +31 152786359
> --
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RE: Log4J and Struts

[Tom Klaasen (TeleRelay)]

Startup servlet? I have no need for that one - either you name your
property file log4j.properties, or you specify the environment variable
log4j.configuration, and log4j will pick it up by itself.

Thus I have _no_ initialization code for log4j. The only things that are
changed in my code is "import org.apache.log4j.Category;" and "private
static final Category logcat = Category.getInstance(MyClass.class);".
This is precisely what makes log4j superior to all other logging
mechanisms I've yet seen (though I have to admit I don't study them all,
because I'm more than content with log4j).

tomK


> -Original Message-
> From: juraj Lenharcik [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 11:05
> To: 'Struts Users Mailing List'
> Subject: AW: Log4J and Struts
> 
> 
> i have it in web-inf/classes and will be invoced by a startup servlet.
> 
> -Ursprüngliche Nachricht-
> Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
> Gesendet: Donnerstag, 22. November 2001 10:30
> An: Struts Users Mailing List
> Betreff: RE: Log4J and Struts
> 
> 
> Somewhere in the classpath. For Tomcat, I put it in
> TOMCAT_HOME/webapps//WEB-INF/classes
> 
> hth,
> tomK
> 
> > -Original Message-
> > From: storck [mailto:[EMAIL PROTECTED]] 
> > Sent: donderdag 22 november 2001 9:30
> > To: Struts User (E-Mail)
> > Subject: Log4J and Struts
> > 
> > 
> > Hi,
> > 
> > where must I put the config-file for Log4J so I can use log4j 
> > within struts?
> > 
> > Many thanks!
> > 
> > 
> > --
> > To unsubscribe, e-mail:   
> >  [EMAIL PROTECTED]>
> > For 
> > additional commands, 
> > e-mail: 
> > 
> > 
> 
> --
> To unsubscribe, e-mail:
> 
> For additional commands, e-mail:
> 
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> --
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> For 
> additional commands, 
> e-mail: 
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> 

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AW: Log4J and Struts

[juraj Lenharcik]

i have it in web-inf/classes and will be invoced by a startup servlet.

-Ursprüngliche Nachricht-
Von: Tom Klaasen (TeleRelay) [mailto:[EMAIL PROTECTED]]
Gesendet: Donnerstag, 22. November 2001 10:30
An: Struts Users Mailing List
Betreff: RE: Log4J and Struts


Somewhere in the classpath. For Tomcat, I put it in
TOMCAT_HOME/webapps//WEB-INF/classes

hth,
tomK

> -Original Message-
> From: storck [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 9:30
> To: Struts User (E-Mail)
> Subject: Log4J and Struts
> 
> 
> Hi,
> 
> where must I put the config-file for Log4J so I can use log4j 
> within struts?
> 
> Many thanks!
> 
> 
> --
> To unsubscribe, e-mail:   
>  [EMAIL PROTECTED]>
> For 
> additional commands, 
> e-mail: 
> 
> 

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RE: Struts salability

[Emaho, Ghoot]

We have a system in production which serves the entire North Sea
Offshore and Onshore Installations for BP, serving several thousand
concurrent users and performance is excellent (i can provide metrics if
you are interested) - although we did have to do the neccessary
performance tuning. Generally we found that Struts is the least of your
worries when it comes to large scale enterprise deployments -
particularly if your software involves EJBs. If you or anyone else would
like anymore info, i'd be happy to share more details.

On another note, details of the previously mentioned Chiki Wiki built
with Struts will be posted soon - the prototype will be available over
the web shortly.

Cheers

Ghoot Emaho
Software Development Team Leader
www.petrotechnics.com


> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: 21 November 2001 18:04
> To: [EMAIL PROTECTED]
> Subject: Struts salability
> 
> 
> 
> 
> Does anybody know of any issues with Struts with respect to 
> salability ?
> Is a multiple servlet solution more scalable ?
> 
> Many Thanks
> 
> Alan
> 
> 
> 
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RE: Log4J and Struts

[Tom Klaasen (TeleRelay)]

Somewhere in the classpath. For Tomcat, I put it in
TOMCAT_HOME/webapps//WEB-INF/classes

hth,
tomK

> -Original Message-
> From: storck [mailto:[EMAIL PROTECTED]] 
> Sent: donderdag 22 november 2001 9:30
> To: Struts User (E-Mail)
> Subject: Log4J and Struts
> 
> 
> Hi,
> 
> where must I put the config-file for Log4J so I can use log4j 
> within struts?
> 
> Many thanks!
> 
> 
> --
> To unsubscribe, e-mail:   
>  [EMAIL PROTECTED]>
> For 
> additional commands, 
> e-mail: 
> 
> 

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Weblogic pains...

[Mark Schenk]

I am trying to get a simple application up and running under Weblogic 5.1
(sp 8) and getting stuck on about the first step :-(. It looks as though
struts has problems translating mappings. This is my jsp:

<%@page contentType="text/html"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>






And the corresponding entry in struts-config.xml is OK, 'cause this displays
a fine form tag under Tomcat. Is there some known limitation on Weblogic? I
am using prefix matching in my app, could this be the problem?

Thanks for any input.

PS Upgrading Weblogic is not an option for me: this is part of a larger app.

Mark Schenk |   Ceci n'est pas une signature
Blackboard Project Manager  |
Delft University of Technology  |E-mail: [EMAIL PROTECTED]
Dept.: DTO  |Phone:  +31 152785448 (85448)
Room: LB00.680  |Fax:+31 152786359

-


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RE: Please Help!!!

[Tom Klaasen (TeleRelay)]

ServiceProvider.date is null. Initialize it to new YourDateClass() (and
don't forget to do the same in the reset() method if you're using one).

hth,
tomK

> -Original Message-
> From: Ashoka Murthy [mailto:[EMAIL PROTECTED]] 
> Sent: woensdag 21 november 2001 22:50
> To: [EMAIL PROTECTED]
> Subject: Please Help!!!
> 
> 
> Could anybody tell me where to find information on
> "how to include beans on your page" and also
> write the corresponding ActionForm for it.
> 
> I have a form in which I am displaying 2 dates that come from a class 
> Daterange. Now I am calling the dates as :-
> 
>  property="date.displayEffectiveDate" 
> size="13"/>
> 
>  size="13"/>
> 
> I also have a Actionform called ServiceProviderForm.java 
> which has setDate 
> and getDate methods.
> 
> When I submit the form, I get the foll. error
> 
> java.lang.IllegalArgumentException: Null property value for 'date'
>   at 
> org.apache.struts.util.PropertyUtils.setNestedProperty(Propert
> yUtils.java:776)
>   at 
> org.apache.struts.util.PropertyUtils.setProperty(PropertyUtils
> .java:825)
>   at org.apache.struts.util.BeanUtils.populate(BeanUtils.java:847)
>   at org.apache.struts.util.BeanUtils.populate(BeanUtils.java:789)
>   at 
> org.apache.struts.action.ActionServlet.processPopulate(ActionS
> ervlet.java:1803)
>   at 
> org.apache.struts.action.ActionServlet.process(ActionServlet.j
> ava:1414)
>   at 
> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:480)
>   at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
>   at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>   at 
> org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper
> .java:405)
>   at org.apache.tomcat.core.Handler.service(Handler.java:287)
>   at 
> org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>   at 
> org.apache.tomcat.core.ContextManager.internalService(ContextM
> anager.java:812)
>   at 
> org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
>   at 
> org.apache.tomcat.service.http.HttpConnectionHandler.processCo
> nnection(HttpConnectionHandler.java:213)
>   at 
> org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoin
> t.java:416)
>   at 
> org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPo
> ol.java:501)
>   at java.lang.Thread.run(Thread.java:484)
> 
> Please help me :(
> 
> TIA
> 
> _
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Help with struts model

[Matt Smith]

Happy thanksgiving eveyone!

I was hoping someone could give me some help with the best way to use struts
in a certain instance. In some of my web apps, there is a set of N pages
that have links to each other (in a list across the top of the page,
perhaps) and whenever you go between two of those pages, I want to perform
an action (say, for example, authorize the user, save some values they've
filled out on the page to the db, and then go to the destination page if
everything succeeds.)

I can see two ways of doing this: First, make N*(N-1) different entries in
struts-config.xml, one for each possible path between the two pages. This
seems pretty silly to me, and unworkable in the long run.

The other way is to pass in the "requested destination" as a parameter to
the action, and create an ActionForward based upon that param. This seems
like the only workable solution, but a little contrary to the struts model.

Does anyone have a better solution? Or am I just being a little too worried
about being purist? The main reason I ask is that I fear establishing a
precendent in the development group of having actions use dynamically
created ActionForwards based upon input params. In many ways, it's less
work... and I think people will use it as an "easy way out" for the short
term, negating much of the declarative value of struts in the long run.

Thanks,
-Matt


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Log4J and Struts

[storck]

Hi,

where must I put the config-file for Log4J so I can use log4j within struts?

Many thanks!


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