[richfaces-issues] [JBoss JIRA] (RF-13060) Issue in initializing the list of selected items in a Picklist

[Brian Leathem (JIRA)]

     [ https://issues.jboss.org/browse/RF-13060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Leathem updated RF-13060:
-------------------------------

             Fix Version/s: 4.3.3
                            5-Tracking
                  Assignee: Brian Leathem
    Workaround Description: Make sure your domain objects implement both the _euqals_ and the _hashCode_ methods.


The fix is to override hashCode for your Item Object.  This however is less than ideal.  While the HashSet used may lead to an efficient implementation, in practice pickList value collections are small enough that iterating over the elements is sufficient.

We should change our implementation to not require the implementation of the hashCode method in the Data objects.  To implement this, we can simply iterate over the collection, invoking the equals method on the individual objects.  This will make it easier for folks to use the pickList.
                
> Issue in initializing the list of selected items in a Picklist
> --------------------------------------------------------------
>
>                 Key: RF-13060
>                 URL: https://issues.jboss.org/browse/RF-13060
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-selects
>    Affects Versions: 4.3.2
>            Reporter: Jean-Noel Colin
>            Assignee: Brian Leathem
>             Fix For: 4.3.3, 5-Tracking
>
>
> A picklist uses two list of items: a list of available items and a list of selected items. If this second list has to be initialized, it has to contain the same object instances as those in the available items. So both lists can't be built from two separate DB queries, since they would refer to distinct objects, and in this case, the list of selected items would always be empty. Upon request of  Brian Leathem, I have created this JIRA issue after providing a sample application that illustrates the problem. 
> /Items.xhtml is the frontend
> Item is the element to be displayed in the list
> ItemBean is the managed bean that builds the available and selected lists
> ItemConverter is the converter
>  
> As you see in ItemBean's constructor, depending on the way I build the selectedList, it gets displayed properly or not
>  
> the project is using ivy for dependencies, and is build using ant tasks
> ant resolve-dependencies
> ant package
>  
> should build the war file in /dist

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