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
*
* 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 <fusilla...@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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