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https://issues.apache.org/jira/browse/TRINIDAD-1889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Robinson updated TRINIDAD-1889:
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Status: Resolved (was: Patch Available)
Fix Version/s: 2.0.0.3-core
Resolution: Fixed
> Issue with Trinidad UIXCollection class 'createCollectionModel' method
> ----------------------------------------------------------------------
>
> Key: TRINIDAD-1889
> URL: https://issues.apache.org/jira/browse/TRINIDAD-1889
> Project: MyFaces Trinidad
> Issue Type: Bug
> Components: Components
> Affects Versions: 2.0.0.3-core
> Environment: All
> Reporter: Kamran Kashanian
> Fix For: 2.0.0.3-core
>
> Attachments: uixcollection1.patch
>
>
> The Trinidad UIXCollection class contains an abstract method called
> 'createCollectionModel'. Subclasses are supposed to override this method
> and use it to create a CollectionModel instance for use by the component.
> Currently subclasses like UIXTable and UIXTree use 'createCollectionModel' to
> get the component's 'value' attribute and wrap the object in the 'value'
> attribute in a CollectionModel/TreeModel instance (if necessary) .
> UIXTable and UIXTree also perform other initializations in
> 'createCollectionModel. For example, SelectedRowKeys and DisclosedRowKeys
> sets are initialized in 'createCollectionModel'.
> The issue with the current design is that the component's reference to the
> CollectionModel is not fully initialized until 'createCollectionModel'
> returns a CollectionModel instance and the resulting model is stored in the
> component's state by UIXCollection.
> So for example, UIXTable and UIXTree should not be performing initialization
> of component's attribute that depend on a fully initialized CollectionModel
> reference inside the 'createCollectionModel'.
> The SelectedRowKeys and DisclosedRowKeys sets require a fully initialized
> CollectionModel before they should be referenced. Otherwise if these
> attributes are EL-bound and a backing bean logic references the
> CollectionModel in the getter method for SelectedRowKeys and
> DisclosedRowKeys, the backing bean may get an uninitialized CollectionModel
> reference.
> The proposal is to add the following method to UIXCollection:
> /**
> * Called after <code>createCollectionModel</code> when the model is fully
> initialized
> * Subclasses can use this method to perform initialization of component
> attributes
> * that should occur only after the CollectionModel is fully initialized in
> * <code>createCollectionModel</code>
> * This is a do nothing implementation to avoid breaking existing code
> * * @see #createCollectionModel
> * @param model
> */
> protected void postCreateCollectionModel(CollectionModel model)
> {
> // do nothing
> }
> This method will be called by UIXCollection after 'createCollectionModel'
> returns and the component's reference to the CollectionModel is fully
> initialized. Any initialization of model-dependent attributes can then occur
> in 'postCreateCollectionModel'
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