Re: Easy question: iterate

[Mark Lowe]

Looks like you should copy what your view needs from your model rather 
than shoe-horning in your data objects into your jsps.

Have a simple bean called Category in this example with a title 
property.

Category_VO[] pcatResults = dao.selectTopLevel();

ArrayList categoryList = new ArrayList();

while(pcatResults.next()) {
        Category category = new Category();
        String title = pcatResults.getShortTitle();
        category.setTitle(title);
        categoryList.add(category);
}
request.setAttribute("categories", categoryList.toArray());

Any good?

Wont need the useBean stuff, i just didn't know what you were trying.

Cheers Mark

On 24 Dec 2003, at 19:20, e-denton Java Programmer wrote:

Hi Mark,

I tried this:

    Category_VO[] pcatResults = null;
    Category_DAO dao= new Category_DAO();
    pcatResults = dao.selectTopLevel();
    request.getSession (true).setAttribute ("PCAT", pcatResults);
---
     <jsp:useBean id="PCAT" class="com.cnw.portal.database.Category_VO"
scope="session" />
     <logic:iterate id="category" name="PCAT">
     <p><bean:write name="category" property="shortTitle"/>
     </logic:iterate>
and, I get this:

    javax.servlet.jsp.JspException: Cannot create iterator for this
collection
Will

----- Original Message -----
From: "Mark Lowe" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Wednesday, December 24, 2003 12:31 PM
Subject: Re: Easy question: iterate

//psuedo code.
List categoryList = Category.getList();
request.setAttribute("categories", categoryList.toArray());

<logic:iterate id="category" name="categories">

</logic:iterate>

I made the first bit up. But should give you the idea.

<jsp:useBean id="categories"
class="com.cnw.portal.database.Category_VO" scope="request" />
may do what you want.. Depends on what methods you've got in there..

Cheers Mark

On 24 Dec 2003, at 18:23, e-denton Java Programmer wrote:

Sorry to bother you with an easy question, but I can't find the 
answer.

I want to iterate over Category_VO[] which is stored in a session
attribute.
I read that it can be done, but I can't find an example for raw 
arrays.

Here's what I have (which probably doesn't even make sense):

<logic:iterate
 id="category"
 collection="com.cnw.portal.database.Category_VO"
 type="com.cnw.portal.database.Category_VO"
 scope="session">
<p> <bean:write name="category" property="shortTitle"/>
</logic:iterate>
Thanks!

will

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