Package org.omnifaces.taghandler

Class MethodParam

java.lang.Object

jakarta.faces.view.facelets.TagHandler

org.omnifaces.taghandler.MethodParam

All Implemented Interfaces:

FaceletHandler

public class MethodParam
extends TagHandler

The <o:methodParam> is a tag handler that can be used to pass a method expression as attribute into a Facelets tag. By default this is not possible, and the expression that's intended to be a method expression will be created and made available as a value expression.

This handler wraps a value expression that's actually a method expression by another value expression that returns a method expression that gets the value of first value expression, which as "side-effect" executes the original method expression. This somewhat over-the-top chain of wrapping is done so a method expression can be passed as attribute into a Facelet tag.

Author:

Arjan Tijms

Field Summary

Fields inherited from class jakarta.faces.view.facelets.TagHandler

nextHandler, tag, tagId

Constructor Summary

Constructors

Constructor	Description
MethodParam(TagConfig config)	The tag constructor.

Method Summary

Modifier and Type	Method	Description
void	apply(FaceletContext ctx, UIComponent parent)

Methods inherited from class jakarta.faces.view.facelets.TagHandler

getAttribute, getRequiredAttribute, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MethodParam

public MethodParam(TagConfig config)

The tag constructor.

Parameters:

config - The tag config.

Method Detail

apply

public void apply(FaceletContext ctx,
                  UIComponent parent)
           throws IOException

Throws:

IOException