RE: How to extract multiple columns of data in an tag ?

[Uladzimir Kavalchuk <Ul...@epam.com>]

I had to do the same thing. My bean model is Iterator. Everything WORKS.
Use nested iterate tags on the same name, BUT! you must call previous() in
nested iterate.

                    <logic:iterate id="dummy" name="groupModel">
                    <tr><jsp:setProperty name="groupModel" property="back"
value=""/>
                        <logic:iterate id="dummy2" name="groupModel"
length="2">
                        <td width="49%" valign="top">...
                                  <jsp:getProperty name="groupModel"
property="procDescription"/>
                            </td>...
                        </logic:iterate>
                    </tr>
                    </logic:iterate>

Please notice: 
1. Usage of length attribute in nested <iterate>;
2. Call to "hack" setProperty/back, which does something similar to
previous().

I think this SHOULD be fixed by Struts writers:

...EVERYTHING IS APPROXIMATE:
.... IterateTag.java...
       boolean dontNext;

        Tag tag = findAncestorWithClass( this, IterateTag.class);
        if( tag != null && tag.getName().equals(getName()) ) { // we are in
nested iterate on the same name
	dontNext = true; // parent tag also hasNext, otherwise how could we
come here?
        }
... if( ! dontNext) // add this line
	... next() ....

-----Original Message-----
From: SHURTLEFF,ROBERT (HP-FtCollins,ex1) [mailto:robert_shurtleff@hp.com]
Sent: 13 ??????? 2001 ?. 3:33
To: struts-user@jakarta.apache.org
Subject: How to extract multiple columns of data in an <logic:iterate> tag ?


Assume that the ActionForm has the getter for the below "myhashtable" that
returns a Map.

Assume that the .value returns an Array of Strings (or whatever)

I want to build a <table> with 4 columns in it with the <logic:iterate> .

I copied the below code from the STRUTS Developers Guide:

<logic:iterate id="element" name="myhashtable">
Next element is <bean:write name="element" property="value"/>
</logic:iterate> 

Assume that a typical record is like:
Map.key = "myKey"
Map.value = [ "myvalue", "mydesc", "myotherdata" ]

But, how do I get the 0th, 1st, 2nd, etc. columns data out of the .value?

Does this work?
<logic:iterate id="element" name="myhashtable">
Next element key is <bean:write name="element" property="key"/>
Next element value 0 is <bean:write name="element" property="value[0]"/>
Next element value 1 is <bean:write name="element" property="value[0]"/>
Next element value 2 is <bean:write name="element" property="value[0]"/>
</logic:iterate> 

What if .value was a Class like 
public class myRecord{
	.getValue()
	.getDesc()
	.getOtherData()
}

How would you call the getters to get the data?

All help is appreciated.
Robert


--
To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>

--
To unsubscribe, e-mail:   <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>

Problem with Multipart form-data

[Pranjal Bhatnagar <pr...@liqwidkrystal.com>]

Hi!!
        I am a new user of Struts and would really appreciate if one of u
could help us with the problem we are facing.

We are trying to use getParameter method of MultipartRequestWrapper class.
We prepare a HTML form with enctype=multipart/form-data. On Submit, the
doPost method of the Servlet is called. In the post method, we instantiate
MultipartRequestWrapper by
 MultipartRequestWrapper mrw = new MultipartRequestWrapper(request); //
HttpServletRequest request

We then try to get a parameter title using the following call
 mrw.getParameter("title");
This parameter was set initially in the form. However getParameter() returns
a null on execution.
Even getParameterNames() returns null;
How can we retrieve the value of this parameter correctly ?

Thanks in advance,
Pranjal




--
To unsubscribe, e-mail:   <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>