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

[Uladzimir Kavalchuk]

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:[EMAIL PROTECTED]]
Sent: 13 ??????? 2001 ?. 3:33
To: [EMAIL PROTECTED]
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


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