Hi,
I just had bad experience with ServletExec 3.0E and nested
iterate tags. When I changed the inner iterate tag back to
scriptlets things startted working again (the code worked fine
under Tomcat 3.2.1).
Is anyone aware of problems with NewAtlanta's handling of custom
tags in general or Struts in particular?
My env:
1. Sun JDK 1.2.2_5/6
2. New Atlanta ServletExec 3.0E
3. Windows 2000 Professional or Sparc Solaris 2.6
4. Jakarta Struts and Jakarta Taglib
Thanks,
--Amos
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 06, 2001 5:59 PM
To: [EMAIL PROTECTED]
Subject: Re: Nested logic:iterate tags
Marc,
Here's a sample of nested iterate tags IterateForm.java and
TimeNavDblIter.jsp.
Thanks to Craig et al it's a piece of cake.
john ware
///////////////////////////// TimeNavDblIter.jsp
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<%@ page language="java" import = "com.jdware.beans.*" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<html:html>
<%
IterateForm instance = new IterateForm();
instance.setName( "yeh baby" );
pageContext.setAttribute("instance", instance,
PageContext.PAGE_SCOPE);
%>
<html:form action="/time" >
Name: <bean:write name="instance" property='<%= "name" %>' filter="true"
/><br/>
Address <bean:write name="instance" property='<%= "address" %>'
filter="true" /><br/>
<table border="1" width="100%">
<tr><th>Type</th><th>Size</th>
<% int h = 0; %>
<logic:iterate name="instance" property='<%= "foos[0].bars" %>'
id="anything">
<th>
<bean:write name="instance" property='<%= "foos[0].bars[" + h +
"].date" %>' filter="true" />
</th>
<% h++; %>
</logic:iterate>
</tr>
<tr>
<% int i = 0; %>
<logic:iterate name="instance" property="foos" id="anything">
<tr>
<td>
<bean:write name="instance" property='<%= "foos[" + i + "].type"
%>' filter="true" />
</td>
<td>
<bean:write name="instance" property='<%= "foos[" + i + "].size"
%>' filter="true" />
</td>
<% int j = 0; %>
<logic:iterate name="instance" property='<%= "foos[" + i + "].bars"
%>' id="anything">
<td>
<html:text name="instance" property='<%= "foos[" + i + "].bars[" +
j + "].hours" %>' filter="true" />
</td>
<% j++; %>
</logic:iterate>
</tr>
<% i++; %>
</logic:iterate>
</table>
<html:submit/>
</html:form>
</html:html>
////////////////////////////////////////////////////////////////// end
TimeNavDblIter.jsp
////////////////////////////// IterateForm.java
package com.jdware.beans;
import java.util.*;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
import com.jdware.util.Trace;
public class IterateForm extends ActionForm {
public String name = "TestMe";
public String address = "Sischo Dr";
public IterateForm(){
foos = Foo.getFoosByMagic();
}
public static class Foo implements Comparable {
public String type;
public int size;
public Foo(){
type="foo";
size=0;
bars = Bar.getBarsByMagic();
}
public Foo( String type, int size ){
bars = Bar.getBarsByMagic();
this.type = type;
this.size = size;
}
public static ArrayList getFoosByMagic(){
ArrayList rtn = new ArrayList();
rtn.add( new Foo("typeA", 42));
rtn.add( new Foo("typeF", 2));
rtn.add( new Foo("typeW", 4));
rtn.add( new Foo("typeH", 0));
rtn.add( new Foo("typeX", 77));
return rtn;
}
public String getType(){return type;}
public void setType( String type ){ this.type = type; }
public int getSize(){ return size; }
public void setSize( int size ){ this.size = size; }
public int compareTo(Object o){
return type.compareTo( ((Foo)o).type );
}
public static class Bar implements Comparable{
/**
*
*/
public String date;
public String getDate(){ return date; }
public void setDate( String date ){ this.date = date; }
/**
*
*/
public String activity;
public String getActivity(){ return activity; }
public void setActivity( String activity ){ this.activity =
activity; }
/**
*
*/
public double hours;
public double getHours(){ return hours; }
public void setHours( double hours ) { this.hours = hours; }
public Bar(){
date = "8/5/50";
activity = "nonsense";
hours = 8.5;
}
public Bar( String date, String activity, double hours ){
this.date = date;
this.activity = activity;
this.hours = hours;
}
public static ArrayList getBarsByMagic(){
ArrayList rtn = new ArrayList();
rtn.add( new Bar("4/3/54", "chores", 8.5));
rtn.add( new Bar("2/5/85", "hotguys", 0.5));
rtn.add( new Bar("6/4/88", "battle", 3.5));
rtn.add( new Bar("8/5/50", "fun", 18.5));
return rtn;
}
public int compareTo(Object o){
return date.compareTo( ((Bar)o).date );
}
public String toString(){
StringBuffer buf = new StringBuffer();
buf.append( " date : " ).append( date ).append("\n");
buf.append( " activity : " ).append( activity
).append("\n");
buf.append( " hours : " ).append( hours ).append("\n");
return buf.toString();
}
public String toXML(){
StringBuffer buf = new StringBuffer();
buf.append( "<Bar>" ).append("\n");
buf.append( " <date>" ).append( date
).append("</date>").append("\n");
buf.append( " <activity>" ).append( activity
).append("</activity>").append("\n");
buf.append( " <hours>" ).append( hours
).append("</hours>").append("\n");
buf.append( "</Bar>" ).append("\n");
return buf.toString();
}
} // end Bar
ArrayList bars;
public void setBars( ArrayList bars ){ this.bars = bars; }
public Bar getBars( int index ){
return (Bar) bars.get( index );
}
public void setBars( int index, Bar item ){
bars.set( index, item );
}
public ArrayList getBars(){
return bars;
}
public String toString(){
StringBuffer buf = new StringBuffer();
buf.append( "type : " ); buf.append( type ); buf.append(
"\n" );
buf.append( "size : " ); buf.append( size ); buf.append(
"\n" );
buf.append( "Bars : " ); buf.append( "\n" );
ListIterator iter = bars.listIterator();
Bar currentBar = null;
while( iter.hasNext() ){
currentBar = (Bar) iter.next();
buf.append( currentBar.toString() ); buf.append( "\n" );
}
return buf.toString();
}
public String toXML(){
StringBuffer buf = new StringBuffer();
buf.append( "<Foo>" ).append( "\n" );
buf.append( " <type>" ).append( type ).append( " </type>"
).append( "\n" );
buf.append( " <size>" ).append( size ).append( " </size>"
).append( "\n" );
ListIterator iter = bars.listIterator();
Bar currentBar = null;
while( iter.hasNext() ){
currentBar = (Bar) iter.next();
buf.append( currentBar.toXML() ).append( "\n" );
}
buf.append( "</Foo>" ).append( "\n" );
return buf.toString();
}
} // end Foo
ArrayList foos;
public void setFoos( ArrayList foos ){ this.foos = foos; }
public Foo getFoos( int index ){
return (Foo) foos.get( index );
}
public void setFoos( int index, Foo item ){
foos.set( index, item );
}
public ArrayList getFoos(){
return foos;
}
public String getName(){ return name; }
public void setName( String name ){ this.name = name; }
public String getAddress(){ return address; }
public void setAddress( String address ){ this.address = address; }
public String toString(){
StringBuffer buf = new StringBuffer();
buf.append( "name : " ); buf.append( name ); buf.append( "\n" );
buf.append( "address : " ); buf.append( address ); buf.append( "\n"
);
buf.append( "Foos : " ); buf.append( "\n" );
ListIterator iter = foos.listIterator();
Foo currentFoo = null;
while( iter.hasNext() ){
currentFoo = (Foo) iter.next();
buf.append( currentFoo.toString() ); buf.append( "\n" );
}
return buf.toString();
}
public String toXML(){
StringBuffer buf = new StringBuffer();
buf.append( "<IterateForm>" ).append( "\n" );
buf.append( " <name>" ).append( name ).append( " </name>"
).append( "\n" );
buf.append( " <address>" ).append( address ).append( " </address>"
).append( "\n" );
ListIterator iter = foos.listIterator();
Foo currentFoo = null;
while( iter.hasNext() ){
currentFoo = (Foo) iter.next();
buf.append( currentFoo.toXML() ).append( "\n" );
}
buf.append( "</IterateForm>" ).append( "\n" );
return buf.toString();
}
/**
* Reset all properties to their default values.
*
* @param mapping The mapping used to select this instance
* @param request The servlet request we are processing
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {
Trace.out( "IterateForm.reset" );
Trace.out( "This is where the ejbs are called" );
}
/**
* Validate the properties that have been set from this HTTP request,
* and return an <code>ActionErrors</code> object that encapsulates any
* validation errors that have been found. If no errors are found,
return
* <code>null</code> or an <code>ActionErrors</code> object with no
* recorded error messages.
*
* @param mapping The mapping used to select this instance
* @param request The servlet request we are processing
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
Trace.out( "IterateForm.validate" );
return new ActionErrors();
}
public static void main( String a[] ){
IterateForm app = new IterateForm();
System.out.println("IterateForm.toString" );
System.out.println( app.toString() );
System.out.println( "Done" );
}
}
////////////////////////////// End IterateForm.java
"Marc S. Penner" wrote:
> Is it possible to nest logic:iterate tags? I would prefer not to try to
> spend too much time trying to do something that isn't possible.
>
> Marc
>
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