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From Dave Newton <davelnew...@gmail.com>
Subject Re: iterable tag
Date Sat, 12 Jan 2013 21:08:33 GMT
(Isn't it around where the iterator tag is in that source? I thought
that *was* the OP's code this second barf of source.)

Dave


On Sat, Jan 12, 2013 at 4:04 PM, Chris Pratt <thechrispratt@gmail.com> wrote:
> You said in your original post that you used the <s:iterator> tag,
> correct?  Can I see how you used it?
>   (*Chris*)
>
>
> On Sat, Jan 12, 2013 at 3:06 AM, fusillator <fusillator@gmail.com> wrote:
>
>> Sorry for my misunderstanding, I changed the code of the wiki tutorial
>> about wildcard
>>
>> These is the view:
>>
>> <%@ page language="java" contentType="text/html; charset=UTF-8"
>>     pageEncoding="UTF-8"%>
>> <%@ taglib prefix="s" uri="/struts-tags" %>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
>> http://www.w3.org/TR/xhtml1/**DTD/xhtml1-transitional.dtd<http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>
>> ">
>> <html xmlns="http://www.w3.org/1999/**xhtml <http://www.w3.org/1999/xhtml>
>> ">
>> <head>
>> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
>> <title>List of people</title>
>> </head>
>> <body>
>> <h3>List of persons:</h3>
>> <s:if test="people.isEmpty">
>> <ol>
>> <s:iterator value="people">
>> <li>
>> <s:property value="firstName" /> <s:property value="lastName" />
>> <s:url action="removePerson" var="urlremove"><s:param name="code"
>> value="id" /></s:url>
>> <s:url action="editPerson" var="urledit"><s:param name="code" value="id"
>> /></s:url>
>> <s:a href="%{urledit}">Edit</s:a>
>> <s:a href="%{urlremove}">Remove</s:**a>
>> </li>
>> </s:iterator>
>> </ol>
>> </s:if>
>> <s:else>
>> No person inserted
>> </s:else>
>> <s:url action="editPerson" var="urlnew" />
>> <s:a href="%{urlnew}">Insert a new person</s:a>
>> </body>
>> </html>
>>
>> and this is the action class:
>>
>> package org.apache.struts.tutorial.**wildcard.action;
>>
>> import java.util.Collection;
>> //import java.util.List;
>> import org.apache.struts.tutorial.**wildcard.service.**PersonService;
>> import org.apache.struts.tutorial.**wildcard.model.Person;
>> import org.apache.log4j.Logger;
>> import com.opensymphony.xwork2.**ActionSupport;
>>
>> public class PersonAction extends ActionSupport {
>>
>>     private static final long serialVersionUID = 1L;
>>
>>     private static final Logger logger = Logger.getLogger(PersonAction.**
>> class.getName());
>>
>>     private Collection<Person> people=PersonService.**getPeople();
>>     private int code=-1; //parametro passato da view
>>     private Person personBean;
>>     private PersonService personService=new PersonService();
>>
>>     @Override
>>     public String execute(){
>>         return SUCCESS;
>>     }
>>
>>     public String edit(){
>>         setPersonBean(personService.**getPerson(code));
>>         return INPUT;
>>     }
>>
>>     public String save(){
>>         personService.savePerson(**getPersonBean());
>>         return SUCCESS;
>>     }
>>
>>     public String remove(){
>>         personService.removePerson(**code);
>>         return SUCCESS;
>>     }
>>
>>     public Collection<Person> getPeople() {
>>         return people;
>>     }
>>
>>     public void setPeople(Collection<Person> people) {
>>         this.people = people;
>>     }
>>
>>     public int getCode() {
>>         return code;
>>     }
>>
>>     public void setCode(int code) {
>>         this.code = code;
>>     }
>>
>>     public Person getPersonBean() {
>>         return personBean;
>>     }
>>
>>     public void setPersonBean(Person personBean) {
>>         this.personBean = personBean;
>>     }
>>
>> }
>>
>> and my modified PersonService class:
>>
>> package org.apache.struts.tutorial.**wildcard.service;
>>
>> //import java.util.ArrayList;
>> import java.util.Collection;
>> //import java.util.List;
>> import java.util.SortedMap;
>> import java.util.TreeMap;
>>
>> import org.apache.log4j.Logger;
>> import org.apache.struts.tutorial.**wildcard.model.Person;
>>
>> public class PersonService {
>>
>>     private static final Logger logger = Logger.getLogger(**
>> PersonService.class.getName())**;
>>
>>     //static private List<Person> peopleList=new ArrayList<Person>();
>>     static private SortedMap<Integer,Person> people=new
>> TreeMap<Integer,Person>();
>>     static {
>>         people.put(new Integer(1), new Person(1,"Paolino","Paperino")**);
>>         people.put(new Integer(2), new Person(2,"Paperon","De Paperoni"));
>>         people.put(new Integer(3), new Person(3,"Archimede","**
>> Pitagorica"));
>>         //generateList();
>>     }
>>     /*
>>     static void generateList(){
>>         peopleList.clear();
>>         for (Integer i : people.keySet()){
>>             peopleList.add(people.get(i));
>>         }
>>     }
>>     */
>>     static public Collection<Person> getPeople(){
>>         logger.debug(people.values());
>>         logger.debug(people.values().**getClass().toString());
>>         return people.values();
>>     }
>>
>>     public Person getPerson(int code){
>>         if (code<0)
>>             return new Person(-1,"","");
>>         else
>>             return people.get(new Integer(code));
>>     }
>>
>>     public void savePerson(Person person){
>>         logger.debug(person);
>>         if (person.getId()>=0){
>>             people.put(new Integer(person.getId()),**person);
>>         } else {
>>             int id = people.isEmpty() ? 1 : people.lastKey().intValue()+1;
>>             person.setId(id);
>>             people.put(new Integer(id),person);
>>         }
>>         //generateList();
>>     }
>>
>>     public void removePerson(int code){
>>         people.remove(new Integer(code));
>>         //generateList();
>>     }
>>
>> }
>>
>>
>> The mapping definitions are:
>>
>> <action name="*Person" class="org.apache.struts.**
>> tutorial.wildcard.action.**PersonAction" method="{1}">
>>             <result name="success">/view.jsp</**result>
>>             <result name="input">/input.jsp</**result>
>> </action>
>>
>> The model Person is a pojo with 3 attributes: firstName, lastName, id
>>
>> thanks for the support
>>
>> Il 12/01/2013 11:50, Umesh Awasthi ha scritto:
>>
>>  I believe what *Chris* has asked is to copy the code from your JSP page
>>>
>>> i believe you must be using <s:iterator> tag in your JSP page to iterate
>>> some list
>>> so please copy that code from your JSP and provide here
>>>
>>>
>>>
>>> On Sat, Jan 12, 2013 at 4:16 PM, fusillator <fusillator@gmail.com> wrote:
>>>
>>>  Hi Chris, not really sure how to find that code... Anyway this has been
>>>> my
>>>> steps:
>>>> $ for lib in /opt/struts-2.3.7/lib/* ; do jar tvf $lib | grep tld &&
echo
>>>> $lib; done
>>>>    3349 Wed Aug 10 12:51:32 CEST 2005 META-INF/sitemesh-decorator.****
>>>> tld
>>>>    3013 Sat May 15 11:55:14 CEST 2004 META-INF/sitemesh-page.tld
>>>> /opt/struts-2.3.7/lib/****sitemesh-2.4.2.jar
>>>> 346038 Tue Nov 06 08:13:06 CET 2012 META-INF/struts-tags.tld
>>>> /opt/struts-2.3.7/lib/struts2-****core-2.3.7.jar
>>>> 136496 Tue Nov 06 08:24:22 CET 2012 META-INF/struts-dojo-tags.tld
>>>> /opt/struts-2.3.7/lib/struts2-****dojo-plugin-2.3.7.jar
>>>>     752 Tue Nov 06 08:27:06 CET 2012 META-INF/tags/JsonPlugin.tld
>>>> /opt/struts-2.3.7/lib/struts2-****json-plugin-2.3.7.jar
>>>>       0 Tue May 13 21:39:54 CEST 2008 META-INF/tld/
>>>>   27808 Tue May 13 21:39:54 CEST 2008 META-INF/tld/tiles-jsp.tld
>>>> /opt/struts-2.3.7/lib/tiles-****jsp-2.0.6.jar
>>>>
>>>> $ jar xvf /opt/struts-2.3.7/lib/struts2-****core-2.3.7.jar
>>>> META-INF/struts-tags.tld
>>>>   \decompresso: META-INF/struts-tags.tld
>>>>
>>>> $ grep -n "<name>iterator</name>" META-INF/struts-tags.tld
>>>> 4881:    <name>iterator</name>
>>>>
>>>> and the tag definition in the tld file is:
>>>>
>>>> <tag>
>>>>      <description><![CDATA[Iterate over a iterable value]]></description>
>>>>      <name>iterator</name>
>>>> <tag-class>org.apache.struts2.****views.jsp.IteratorTag</tag-****class>
>>>>      <body-content>JSP</body-****content>
>>>>      <!-- here a lot of not interesting attributes-->
>>>> </tag>
>>>>
>>>> $ find src -name IteratorTag.java
>>>> src/core/src/main/java/org/****apache/struts2/views/jsp/****
>>>> IteratorTag.java
>>>>
>>>> $ cat src/core/src/main/java/org/****apache/struts2/views/jsp/**
>>>> IteratorTag.java
>>>> /*
>>>>   * $Id: IteratorTag.java 741179 2009-02-05 16:55:14Z musachy $
>>>>   *
>>>>   * Licensed to the Apache Software Foundation (ASF) under one
>>>>   * or more contributor license agreements.  See the NOTICE file
>>>>   * distributed with this work for additional information
>>>>   * regarding copyright ownership.  The ASF licenses this file
>>>>   * to you under the Apache License, Version 2.0 (the
>>>>   * "License"); you may not use this file except in compliance
>>>>   * with the License.  You may obtain a copy of the License at
>>>>   *
>>>>   *  http://www.apache.org/****licenses/LICENSE-2.0<http://www.apache.org/**licenses/LICENSE-2.0>
>>>> <http://**www.apache.org/licenses/**LICENSE-2.0<http://www.apache.org/licenses/LICENSE-2.0>
>>>> >
>>>>   *
>>>>   * Unless required by applicable law or agreed to in writing,
>>>>   * software distributed under the License is distributed on an
>>>>   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>>>>   * KIND, either express or implied.  See the License for the
>>>>   * specific language governing permissions and limitations
>>>>   * under the License.
>>>>   */
>>>>
>>>> package org.apache.struts2.views.jsp;
>>>>
>>>> import javax.servlet.http.****HttpServletRequest;
>>>> import javax.servlet.http.****HttpServletResponse;
>>>> import javax.servlet.jsp.****JspException;
>>>>
>>>> import org.apache.struts2.components.****Component;
>>>> import org.apache.struts2.components.****IteratorComponent;
>>>>
>>>> import com.opensymphony.xwork2.util.****ValueStack;
>>>>
>>>> /**
>>>>   * @see IteratorComponent
>>>>   */
>>>> public class IteratorTag extends ContextBeanTag {
>>>>
>>>>      private static final long serialVersionUID = -1827978135193581901L;
>>>>
>>>>      protected String statusAttr;
>>>>      protected String value;
>>>>      protected String begin;
>>>>      protected String end;
>>>>      protected String step;
>>>>
>>>>      public Component getBean(ValueStack stack, HttpServletRequest req,
>>>> HttpServletResponse res) {
>>>>          return new IteratorComponent(stack);
>>>>      }
>>>>
>>>>      protected void populateParams() {
>>>>          super.populateParams();
>>>>
>>>>          IteratorComponent tag = (IteratorComponent) getComponent();
>>>>          tag.setStatus(statusAttr);
>>>>          tag.setValue(value);
>>>>          tag.setBegin(begin);
>>>>          tag.setEnd(end);
>>>>          tag.setStep(step);
>>>>      }
>>>>
>>>>      public void setStatus(String status) {
>>>>          this.statusAttr = status;
>>>>      }
>>>>
>>>>      public void setValue(String value) {
>>>>          this.value = value;
>>>>      }
>>>>
>>>>      public void setBegin(String begin) {
>>>>          this.begin = begin;
>>>>      }
>>>>
>>>>      public void setEnd(String end) {
>>>>          this.end = end;
>>>>      }
>>>>
>>>>      public void setStep(String step) {
>>>>          this.step = step;
>>>>      }
>>>>
>>>>      public int doEndTag() throws JspException {
>>>>          component = null;
>>>>          return EVAL_PAGE;
>>>>      }
>>>>
>>>>      public int doAfterBody() throws JspException {
>>>>          boolean again = component.end(pageContext.****getOut(),
>>>> getBody());
>>>>
>>>>          if (again) {
>>>>              return EVAL_BODY_AGAIN;
>>>>          } else {
>>>>              if (bodyContent != null) {
>>>>                  try {
>>>> bodyContent.writeOut(****bodyContent.****getEnclosingWriter());
>>>>                  } catch (Exception e) {
>>>>                      throw new JspException(e.getMessage());
>>>>                  }
>>>>              }
>>>>              return SKIP_BODY;
>>>>          }
>>>>      }
>>>>
>>>> }
>>>>
>>>> Thanks a lot for your help.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Il 11/01/2013 20:21, Chris Pratt ha scritto:
>>>>
>>>>  Can you cut and paste your <s:iterator> code into the email so we
can
>>>>> see?
>>>>>     (*Chris*)
>>>>>
>>>>>
>>>>> On Fri, Jan 11, 2013 at 11:12 AM, fusillator <fusillator@gmail.com>
>>>>> wrote:
>>>>>
>>>>>   Hi all, I'm new to struts2/java matters, so be sympathetic please.
>>>>>
>>>>>> I've a question about <s:iterator> tag
>>>>>>
>>>>>> I recently used it to loop on a Iterable collection of type
>>>>>> java.util.TreeMap$Values retrieved by the method
>>>>>> java.util.TreeMap.values()
>>>>>>
>>>>>> getting the following cast exception:
>>>>>>
>>>>>> 2013-01-11 18:45:00,520 DEBUG org.apache.struts.tutorial.**
>>>>>> wildcard.service.******PersonService.getPeople:33 [Person [1: Paolino
>>>>>> Paperino], Person [2: Paperon De Paperoni], Person [3: Archimede
>>>>>> Pitagorica]]
>>>>>> 2013-01-11 18:45:00,523 DEBUG org.apache.struts.tutorial.**
>>>>>> wildcard.service.******PersonService.getPeople:34 class
>>>>>> java.util.TreeMap$Values
>>>>>> 2013-01-11 18:45:00,523 DEBUG org.apache.struts.tutorial.**
>>>>>> wildcard.service.******PersonService.getPeople:34 class
>>>>>> java.util.TreeMap$Values
>>>>>> gen 11, 2013 6:45:01 PM org.apache.jasper.compiler.*****
>>>>>> *TldLocationsCache
>>>>>> tldScanJar
>>>>>> WARNING: Caught an exception while evaluating expression
>>>>>> 'people.isEmpty'
>>>>>> against value stack
>>>>>> java.lang.ClassCastException: java.util.TreeMap$Values cannot be
cast
>>>>>> to
>>>>>> java.util.Set
>>>>>>           at ognl.SetPropertyAccessor.******getProperty(**
>>>>>> SetPropertyAccessor.java:47)
>>>>>>           at com.opensymphony.xwork2.ognl.******accessor.**
>>>>>> XWorkCollectionPropertyAccesso******r.getProperty(**
>>>>>> XWorkCollectionPropertyAccesso******r.java:93)
>>>>>>           at ognl.OgnlRuntime.getProperty(******OgnlRuntime.java:2300)
>>>>>>
>>>>>> The used variable is reported by log4j.
>>>>>> Is there any restriction on the iterator tags?
>>>>>> Could someone suggest me a tutorial/howto about ognl/value stack?
>>>>>>
>>>>>> Best regards
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------******--------------------------**--**
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>>>>>>
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>>>>
>>>>
>>>
>>
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>>
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-- 
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m: 908-380-8699
s: davelnewton_skype
t: @dave_newton
b: Bucky Bits
g: davelnewton
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