OK here's my bad code. There are two problems Im try to resollve here :
1) i cant iterate through a vector (how do i give the html tag an enumerator
???)
2) even though i rebuilt struts w/tags from husted.com i get a null pointer
error for the attribute "indexed"
i can get iterations to work with simple ine dimensional arrays, but what i
really want to do is input a grid of data as a vector of vectors. so
basically what is below is only a broken half the implementation i need...
the other thing i need to know is how to "set" this data in the formBean.
does this method do it :
public void setParameterList(Vector parameterList)
{
this.parameterList = parameterList;
}
first here's the errors I am trying to get around :
Attribute 'indexed' not found in tag library 'null' for the tag text.
I also get no results form the vector iteration below.
here's the JSP :
<html:form>
{ java.util.Vector vin = new java.util.Vector();
vin.add(0,new SapValidParameter("orderitemsin_itmnumber","00010"));
vin.add(0,new SapValidParameter("orderitemsin_material","TEST"));
vin.add(0,new SapValidParameter("orderitemsin_billdate","20000101"));
vin.add(0,new SapValidParameter("orderitemsin_plant","2000"));
vin.add(0,new SapValidParameter("orderitemsin_targetqty","1000"));
vin.add(0,new SapValidParameter("orderitemsin_shorttext","TEST"));
vin.add(0,new SapValidParameter("orderitemsin_reqdate","20000101"));
vin.add(0,new SapValidParameter("orderitemsin_matlgroup","2000"));
vin.add(0,new SapValidParameter("orderitemsin_purchdate","20000101"));
vin.add(0,new SapValidParameter("orderitemsin_currency","USD"));
pageContext.setAttribute("ParameterList", vin, PageContext.PAGE_SCOPE);
}
%>
<ol>
<logic:iterate id="parameter" name="salesordercreateForm"
property="parameterList">
<html:text name="parameter" property="value" />
</logic:iterate>
</ol>
</html:form>
</body>
</html:html>
here's the form code :
/**
* The parameter list
*/
private Vector parameterList = new Vector();
/**
* Return the list of parameters
*/
public Vector getParameterList()
{
return(this.parameterList);
}
public String getParameters()
{
return(this.parameterList.toString());
}
/**
* Set the list of parameters
*
* @param parameterList The new list
*/
public void setParameterList(Vector parameterList)
{
this.parameterList = parameterList;
}
/**
* Get a particular parameter from the parameterList, based on index
*
* @param index The index of the parameter to retrieve
*/
public SapValidParameter getParameter(int index)
{
return (SapValidParameter)parameterList.elementAt(index);
}
-----Original Message-----
From: Niall Pemberton [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 5:40 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: multiple form fields
Hey thats what this list is for - your headaches as valid as anyone elses,
keep sending them until you get a result.
Post all the bits of code in an email - your action form and/or bean(s) and
the jsp - plus when is throwing the Null pointer exception, - in the jsp,
before your page is displaying or afterwards when its trying to populate
back?
Off the top of my head you might be getting null pointer exceptions for a
couple of reasons:
1) If its happening before your page is displayed it might be because there
are nulls in your array/collection/vector - make sure its all
loaded/initialised containing no nulls before you forward to your jsp page.
2) If its happening after you submit your form back (using Daves tags) then
check the scope of your form - if its in session scope you should be OK, if
its in request scope you will need to do something clever to set it up
again. Struts effectively does a getXxxxx(index).setYxxxx(value) call
Anyway, if you post your code it'll be easier to see whats happening.
You are using Dave's modified tags from husted.com?
Niall
> -----Original Message-----
> From: Paul Beer [mailto:[EMAIL PROTECTED]]
> Sent: 29 June 2001 00:56
> To: [EMAIL PROTECTED]
> Subject: RE: multiple form fields
>
>
> Im still having problems getting this. I just started using struts so
> please bear with me here. But can someone please email me
> something similar
> to the logic-iterate example that cmoes with the example-taglibs demo ? I
> am getting null pointer errors and I dont if it is my struts
> distribution or
> my own inability to grock this....
>
> i will try not to toxify this list with any more of this ....
> its just that
> if I cant model a formbean w/a grid of data struts is worthless to me,
> because my whole world is executing functions w/import tables.
>
> -paul
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, June 28, 2001 1:54 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: RE: multiple form fields
>
>
>
>
> Paul,
>
> a concrete example using modified tag:
>
> jsp:
> <logic:iterate id="parameter" name="ParametersForm"
> property="parameterList">
> .................
> <html:text name="parameter" property="value" indexed="true"
> onchange="validate(this)"/>
> .................
> </logic:iterate>
>
>
> in my form bean (using a vector):
>
> public final class ParametersForm extends ActionForm
> {
> /**
> * The parameter list
> */
> private Vector parameterList = new Vector();
>
>
> /**
> * Return the list of parameters
> */
> public Vector getParameterList()
> {
> return(this.parameterList);
> }
>
> /**
> * Set the list of parameters
> *
> * @param parameterList The new list
> */
> public void setParameterList(Vector parameterList)
> {
> this.parameterList = parameterList;
> }
>
> /**
> * Get a particular parameter from the parameterList, based on index
> *
> * @param index The index of the parameter to retrieve
> */
> public Parameter getParameter(int index)
> {
> return (Parameter)parameterList.elementAt(index);
>
> }
> }
>
> Hope that helps,
>
> Dave
>
>
>
>
>
> "Paul Beer" <[EMAIL PROTECTED]> on 06/28/2001
> 02:32:55 PM
>
> Please respond to [EMAIL PROTECTED];
> Please
> respond to [EMAIL PROTECTED]
>
> To: [EMAIL PROTECTED]
> cc: (bcc: David Hay/Lex/Lexmark)
> Subject: RE: multiple form fields
>
>
>
> sorry i send the email accidently :
>
> doesnt :
>
> ...
> <INPUT type="text" name="qty" value="1">
> <INPUT type="text" name="qty" value="2">
> <INPUT type="text" name="qty" value="3">
> ...
>
> In your class:
>
> String[] qtys = request.getParameterValues("qty");
>
>
> defeat the purpose of having a form bean which seems like a kind
> of servlet
> abstraction of an html form ? i dont really care. I would just
> like to see
> some sample code that works. I have searched through the quagmire that is
> the mail archives and every thread ends w/confusing comments.
>
> -p
>
>
>
>
>
>
>
>
>
>
