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Date: Thu, 4 Jun 2009 17:33:07 -0700 (PDT)
From: "Thiago H. de Paula Figueiredo (JIRA)" <jira@apache.org>
To: commits@tapestry.apache.org
Subject: [jira] Closed: (TAP5-739) Allow recursion of a component within
 itself
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     [ https://issues.apache.org/jira/browse/TAP5-739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thiago H. de Paula Figueiredo closed TAP5-739.
----------------------------------------------

    Resolution: Won't Fix

This can't be implemented in Tapestry without rewriting it from scratch. Read the "Principle 1 -- Static Structure, Dynamic Behavior" section of http://tapestry.apache.org/tapestry5.1/ to know why. Summary: Tapestry has a static tree of components, and allowing recursion in templates needs dynamic instantiation of components.

By the way, it's not hard to render trees or tree-like structures inside a component: just render everything in code. One example: http://ars-machina.svn.sourceforge.net/viewvc/ars-machina/tapestry-crud/branches/1.1/src/main/java/br/com/arsmachina/tapestrycrud/components/TreeSelect.java?revision=595&view=markup.

> Allow recursion of a component within itself
> --------------------------------------------
>
>                 Key: TAP5-739
>                 URL: https://issues.apache.org/jira/browse/TAP5-739
>             Project: Tapestry 5
>          Issue Type: New Feature
>            Reporter: Seth Call
>
> Ideally, Tapestry would allow a component to be nested within itself.
> Because recursion of a component within itself is not possible, it is very difficult to represent a tree structure, which a component representing each node of the tree.

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