The following comment has been added to this issue:
Author: fabrizio giustina
Created: Wed, 17 Nov 2004 10:32 AM
Body:
it still work if you have id="any_static_value", it doesn't work with
id="<%=any_rtexpr_value%>".
The declaration of the variable has to be done in the TEI (tag extra info)
class, when the jsp engine is still parsing the page and generating the java
file. Expressions will be evaluated later, you have no way to resolve the
rtexpr at that moment.
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View this comment:
http://jira.codehaus.org/browse/DISPL-56?page=comments#action_26566
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View the issue:
http://jira.codehaus.org/browse/DISPL-56
Here is an overview of the issue:
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Key: DISPL-56
Summary: unable to dinamically generate multiple tables on the same page
with indipendent sorting (different id)
Type: Bug
Status: Resolved
Priority: Major
Resolution: FIXED
Original Estimate: Unknown
Time Spent: Unknown
Remaining: Unknown
Project: DisplayTag
Components:
Container Compability
Fix Fors:
1.0 RC2
Versions:
1.0 RC1
Assignee: fabrizio giustina
Reporter: Keith Garry Boyce
Created: Sun, 10 Oct 2004 7:48 AM
Updated: Wed, 17 Nov 2004 10:32 AM
Description:
If I pass id in as <%= string %> value I get classcast exception
The code below with varying name also doesn't work. I sent this also to you
guys because my mail in the past hasn't got onto forum.
Thanks,
Garry
Here is an example of the problem (below is a workaround but you probably have
better one):
<%@ taglib uri="http://displaytag.sf.net"; prefix="display" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<html>
<body>
test
<%!
public class ValueBean {
public ValueBean(String value) {
this.value=value;
}
private String value;
public String getValue() {
return this.value;
}
}
%>
<%
List theList = new ArrayList();
theList.add(new ValueBean("1"));
theList.add(new ValueBean("2"));
theList.add(new ValueBean("3"));
for (int i=0;i<3;i++) {
request.setAttribute("row" + String.valueOf(i),new ArrayList(theList));
%>
<display:table class="disp"
id="row"
name="<%= "row" + String.valueOf(i) %>"
sort="list" >
<display:column property="value" sortable="true"/>
</display:table>
<% } %>
</body>
</html>
Workaround:
have anonther attribute called tableId. I'm using reflection code for
visibility issues.
/*
* TableTag2.java
*
* Copyright 2004 by Electronic Data Systems
* Corporation. All rights reserved.
*
* An unpublished work created Aug 5, 2004, 2004. This work is a
* trade secret of EDS and unauthorized use or copying
* is prohibited.
*
*/
package org.displaytag.tags;
import java.lang.reflect.Field;
import org.displaytag.util.ParamEncoder;
/**
* @author jztb88
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class TableTag2 extends TableTag {
private String tableId;
/**
* @return Returns the tableId.
*/
public String getTableId() {
return tableId;
}
/**
* @param tableId The tableId to set.
*/
public void setTableId(String tableId) {
try {
Field fld =
TableTag.class.getDeclaredField("paramEncoder");
fld.setAccessible(true);
if (fld.get(this) == null) {
fld.set(this,new ParamEncoder(this.id +
this.tableId));
}
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchFieldException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
this.tableId = tableId;
}
}
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