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Posted to user@struts.apache.org by "Marc S. Penner" <ma...@yahoo.com> on 2001/06/06 16:32:43 UTC
Nested logic:iterate tags
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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Re: Nested logic:iterate tags
Posted by "Marc S. Penner" <ma...@yahoo.com>.
Apparently, it is. I tried it and it worked quite easily. Answered my own
question.
Marc
----- Original Message -----
From: "Marc S. Penner" <ma...@yahoo.com>
To: <st...@jakarta.apache.org>
Sent: Wednesday, June 06, 2001 10:32 AM
Subject: Nested logic:iterate tags
> 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
>
>
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
Re: Nested logic:iterate tags
Posted by jd...@frii.com.
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
>
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com