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From "Andy Schwartz (JIRA)" <>
Subject [jira] Created: (TRINIDAD-1488) ChangeManager: Ability to apply component changes to a subtree
Date Fri, 22 May 2009 20:16:45 GMT
ChangeManager: Ability to apply component changes to a subtree

                 Key: TRINIDAD-1488
             Project: MyFaces Trinidad
          Issue Type: New Feature
          Components: Archetype
    Affects Versions:  1.2.11-core
            Reporter: Andy Schwartz
            Priority: Minor

The ChangeManager currently only supports applying component changes to the entire view. 
This is accomplished via the following API:

public void applyComponentChangesForCurrentView(FacesContext facesContext)

I would like to have the ability to apply component changes to a specific subtree as opposed
to the entire view.  This would require a new API along the lines of:

public void applyComponentChangesForSubtree(FacesContext facesContext, NamingContainer root)

Note that this method would operate on a subtree rooted at a NamingContainer in order to allow
ChangeManager to easily filter the component changes based on id comparisons.  (SessionChangeManager
already has access to scoped ids for each component change, so checking whether a particular
change is applicable by examining the id should be very efficient.)

The reason for requesting this new API is that I have cases where portions of the subtree
are created dynamically at render time, after applyComponentChangesForCurrentView() has been
called.  I need to be able to apply component changes directly to the newly created subtrees
without re-applying the changes to the entire view.

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