Nested logic:iterate tags will not compile at runtime.
I'm having a problem with embedding 2 logic:iterate tags together. I need to produce results that would be similar to having a nested for loop. I've looked at the nested:iterate tag but I can't seem to get it to work or if I'm even supposed to be referencing this tag for this issue. I *don't* need to reference the 'parent' iterate tag. Here is a code snippet of what I'm looking to do: logic:iterate id=outterloop name=bean property=someList Next element is bean:write name=outterloop / logic:iterate id=innerLoop name=bean property=someOtherList bean:write name=innerLoop / /logic:iterate /logic:iterate There's some HTML that goes along with this code but I left that out for simplicity. My problem is that when I try to request the JSP with the code above, it won't even compile. It doesn't like that there is an logic:iterate tag nested within another. Has anyone ever come across this error before? Any help on this would be greatly appreciated. - Billy -
RE: Nested logic:iterate tags ServletExec
I can second your problems with nested iterate tags using ServletExec. We are running JDK 1.3, ServletExec 3.1, Win2k/IIS 5.0. I posted something about it a few weeks ago but no one replied. It appeared to me to be some sort of recursion issue, where the body of the inner iterate tag was evaluated and output prior to the outer iterate tag. We ended up just using a scriplet for the outer loop and an iterate tag for the inner loop. I havent' seen any other glaring problems with the custom tags running under ServletExecyet. ServletExec 4.0 is in beta right now, perhaps that will solve the problem? It's supposed to support Servlet API 2.3 and JSP 1.2 (as soon as they are released!). Roman -Original Message- From: Amos Shapira Sent: Wed 6/6/2001 8:58 AM To: '[EMAIL PROTECTED]' Cc: Subject: RE: Nested logic:iterate tags 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 winmail.dat
Re: Nested logic:iterate tags ServletExec
Be sure to report this to your vendor; people are starting to use Struts as a compatibility test of their containers with the specifications ;-) -- Ted Husted, Husted dot Com, Fairport NY USA. -- Custom Software ~ Technical Services. -- Tel 716 737-3463. -- http://www.husted.com/about/struts/ Roman Fail wrote: I can second your problems with nested iterate tags using ServletExec. We are running JDK 1.3, ServletExec 3.1, Win2k/IIS 5.0. I posted something about it a few weeks ago but no one replied. It appeared to me to be some sort of recursion issue, where the body of the inner iterate tag was evaluated and output prior to the outer iterate tag. We ended up just using a scriplet for the outer loop and an iterate tag for the inner loop. I havent' seen any other glaring problems with the custom tags running under ServletExecyet. ServletExec 4.0 is in beta right now, perhaps that will solve the problem? It's supposed to support Servlet API 2.3 and JSP 1.2 (as soon as they are released!). Roman -Original Message- From: Amos Shapira Sent: Wed 6/6/2001 8:58 AM To: '[EMAIL PROTECTED]' Cc: Subject: RE: Nested logic:iterate tags 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 Name: winmail.dat winmail.datType: application/ms-tnef Encoding: base64
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
Re: Nested logic:iterate tags
Apparently, it is. I tried it and it worked quite easily. Answered my own question. Marc - Original Message - From: Marc S. Penner [EMAIL PROTECTED] To: [EMAIL PROTECTED] 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
yes it is possible, like so: logic:iterate id=firstListElement name=firstList logic:iterate id=secondListElement namesecondList bean:write name=firstListElement bean:write name=secondListElement /logic:iterate /logic:iterate -Original Message- From: Marc S. Penner [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 06, 2001 3:33 PM To: [EMAIL PROTECTED] 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 -- The content of this e-mail is confidential, may contain privileged material and is intended solely for the recipient(s) named above. If you receive this in error, please notify Software AG immediately and delete this e-mail. Software AG (UK) Limited Registered in England Wales 1310740 Registered Office: Hudson House, Hudson Way, Pride Park, Derby DE24 8HS
RE: Nested logic:iterate tags
Hi Marc, Yes its possible, search the archive as I believe an example has been posted. See http://www.mail-archive.com/struts-user@jakarta.apache.org/ Jon. -Original Message- From: Marc S. Penner [mailto:[EMAIL PROTECTED]] Sent: 06 June 2001 15:33 To: [EMAIL PROTECTED] 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
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%
trthType/ththSize/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 );
}
RE: Nested logic:iterate tags
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%
trthType/ththSize/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
nested logic:iterate tags
Hi, I'm trying to generate a table of data from a 2 dimensional array of Strings called ( String[][] data ). I am trying to use the struts tag logic:iterate to loop through the data and generate the table. As it is a 2 dimensional array I have nested the iterate statements as follows: struts_logic:iterate id=rows name=contributorList property=data scope=page struts_logic:iterate id=data collection=(Object[])rows tdstruts_bean:write name=data//td /struts_logic:iterate /struts_logic:iterate I get the following exception trying to run this: org.apache.jasper.compiler.CompileException: F:\projects\fcutc\deploy\fcutc\list.jsp(40,1) Unable to convert a String to java.lang.Object for attribute collection I'm trying to use the id (rows) from the first iterate statement as a variable in the second, however it seems it looks as though it is being treated as a string rather than a variable. I thought the id held the current object in the iteration, which in my case is an array. Hope someone can help. I'm pretty new to struts ( and JSP ) so I may have done something obviously wrong. Thanks. Richard Murray Software Engineer - Net Products Development QSP OLAS House, Team Valley Trading Estate, 5th Avenue Business Park, Gateshead, Tyne Wear NE11 0XA Switchboard+44 (0) 191 402 Direct line +44 (0) 191 402 3329 email [EMAIL PROTECTED] website www.qspgroup.com QSP - Enabling e-Finance ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager at [EMAIL PROTECTED] This footnote also confirms that this email message has been swept by for the presence of computer viruses. http://www.qspgroup.com **
RE: nested logic:iterate tags
Hi, For anyone interested I managed fix my problem with the following: struts_logic:iterate id=rows name=contributorList property=data scope=page tr struts_logic:iterate id=element name=rows tdstruts_bean:write name=element//td /struts_logic:iterate /tr /struts_logic:iterate Regards Richard -Original Message- From: Richard Murray [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 2:44 PM To: '[EMAIL PROTECTED]' Subject: nested logic:iterate tags Hi, I'm trying to generate a table of data from a 2 dimensional array of Strings called ( String[][] data ). I am trying to use the struts tag logic:iterate to loop through the data and generate the table. As it is a 2 dimensional array I have nested the iterate statements as follows: struts_logic:iterate id=rows name=contributorList property=data scope=page struts_logic:iterate id=data collection=(Object[])rows tdstruts_bean:write name=data//td /struts_logic:iterate /struts_logic:iterate I get the following exception trying to run this: org.apache.jasper.compiler.CompileException: F:\projects\fcutc\deploy\fcutc\list.jsp(40,1) Unable to convert a String to java.lang.Object for attribute collection I'm trying to use the id (rows) from the first iterate statement as a variable in the second, however it seems it looks as though it is being treated as a string rather than a variable. I thought the id held the current object in the iteration, which in my case is an array. Hope someone can help. I'm pretty new to struts ( and JSP ) so I may have done something obviously wrong. Thanks. Richard Murray Software Engineer - Net Products Development QSP OLAS House, Team Valley Trading Estate, 5th Avenue Business Park, Gateshead, Tyne Wear NE11 0XA Switchboard+44 (0) 191 402 Direct line +44 (0) 191 402 3329 email [EMAIL PROTECTED] website www.qspgroup.com QSP - Enabling e-Finance ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager at [EMAIL PROTECTED] This footnote also confirms that this email message has been swept by for the presence of computer viruses. http://www.qspgroup.com **
RE: nested logic:iterate tags
Richard, What does the array look like? Can you post the logic for that array? On Thu, 03 May 2001, Richard Murray wrote: Hi, For anyone interested I managed fix my problem with the following: struts_logic:iterate id=rows name=contributorList property=data scope=page tr struts_logic:iterate id=element name=rows tdstruts_bean:write name=element//td /struts_logic:iterate /tr /struts_logic:iterate Regards Richard -Original Message- From: Richard Murray [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 2:44 PM To: '[EMAIL PROTECTED]' Subject: nested logic:iterate tags Hi, I'm trying to generate a table of data from a 2 dimensional array of Strings called ( String[][] data ). I am trying to use the struts tag logic:iterate to loop through the data and generate the table. As it is a 2 dimensional array I have nested the iterate statements as follows: struts_logic:iterate id=rows name=contributorList property=data scope=page struts_logic:iterate id=data collection=(Object[])rows tdstruts_bean:write name=data//td /struts_logic:iterate /struts_logic:iterate I get the following exception trying to run this: org.apache.jasper.compiler.CompileException: F:\projects\fcutc\deploy\fcutc\list.jsp(40,1) Unable to convert a String to java.lang.Object for attribute collection I'm trying to use the id (rows) from the first iterate statement as a variable in the second, however it seems it looks as though it is being treated as a string rather than a variable. I thought the id held the current object in the iteration, which in my case is an array. Hope someone can help. I'm pretty new to struts ( and JSP ) so I may have done something obviously wrong. Thanks. Richard Murray Software Engineer - Net Products Development QSP OLAS House, Team Valley Trading Estate, 5th Avenue Business Park, Gateshead, Tyne Wear NE11 0XA Switchboard+44 (0) 191 402 Direct line +44 (0) 191 402 3329 email [EMAIL PROTECTED] website www.qspgroup.com QSP - Enabling e-Finance ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager at [EMAIL PROTECTED] This footnote also confirms that this email message has been swept by for the presence of computer viruses. http://www.qspgroup.com ** Thomas Peters Senior Software Engineer Aidera Solutions Cell: 603-566-5406 Voice Mail: 603-888-7700
