On 7/31/06, Jorge Vásquez <[EMAIL PROTECTED]> wrote:
Very interesting!!
Two new questions regarding valid EL expressions:
1. How exactly will the syntax and procedure be for using a Facelet
function as rendered condition?
Here's an example that was just posted on the mailing list.
To use it, it'd be
<html xmlns="http://www.w3.org/1999/xhtml";
xmlns:myFunction="http://www.prosystemsit.de/le";
....
rendered="#{myFunction:test('value')}"
Note that this particular function doesn't return a boolean, so this
would be an error, but it does demonstrate all of the pieces.
---------- Forwarded message ----------
From: Marcus Schmidke <[EMAIL PROTECTED]>
Date: Jul 27, 2006 7:09 AM
Subject: Antwort: Re: Re: User defined LE functions
To: MyFaces Discussion <users@myfaces.apache.org>
web,xml:
<context-param>
<param-name>facelets.LIBRARIES</param-name>
<param-value>/WEB-INF/tags/le.taglib.xml</param-value>
</context-param>
le.taglib.xml:
<!DOCTYPE facelet-taglib PUBLIC
"-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN"
"http://java.sun.com/dtd/facelet-taglib_1_0.dtd";>
<facelet-taglib>
<namespace>http://www.prosystemsit.de/le</namespace>
<tag>
<tag-name>test</tag-name>
<source>test.xhtml</source>
</tag>
<function>
<function-name>wert</function-name>
<function-class>
de.prosystemsit.leistungserfassung.controller.Functions</function-class>
<function-signature>java.lang.String
wertInSpalte(java.lang.String)</function-signature>
</function>
</facelet-taglib>
Functions.java:
package de.prosystemsit.leistungserfassung.controller;
public class Functions {
public static String wertInSpalte(String s) {
return "Hallo Welt"+s;
}
}
2. Is it possible to obtain elements of Lists at specific positions and
compare them with fixed values.
Ex: rendered="#{mb.myList[0] eq 'element1'}"
Sure, if you write a myFunction:listGet(mb.myList, 0) function.
rendered="#{myFunction:listGet(mb.myList, 0) eq 'element1'}"
