[seam-issues] [JBoss JIRA] Created: (SEAMXML-22) support collection and array virtual fields

[Dan Allen (JIRA)]

support collection and array virtual fields
-------------------------------------------

                 Key: SEAMXML-22
                 URL: https://jira.jboss.org/browse/SEAMXML-22
             Project: Seam XML Configuration
          Issue Type: Feature Request
    Affects Versions: 3.0.0.Beta1
            Reporter: Dan Allen
             Fix For: 3.0.0.Beta2


Add support for defining virtual fields that are of type collection or array. This should work already in theory, but no matter what I tried, I got errors, so it may simply be broken. There is also one piece missing. There needs to be a way to specify the collection type parameter (item type). I'm envisioning something like this:

<List>
   <Integer/> <-- defines item type
   <app:DiceValues/>
   <value>1</value>
   <value>2</value> 
   <value>3</value>
   <value>4</value>
   <value>5</value>
   <value>6</value>  
</List>

defines the virtual field:

@DiceValues
List<Integer> anonymous;

In the same way, we should support virtual arrays:

<array>
   <Integer/>
   <app:DiceValues/>
   <value>1</value>
   <value>2</value> 
   <value>3</value>
   <value>4</value>
   <value>5</value>
   <value>6</value>  
</array>

producing:

@DiceValues
Integer[] anonymous;

The nested element for the type is a bit awkward, though (I suggested it because it's currently how array's are typed). It would make more sense to use an attribute here:

<List itemType="java.lang.Integer">
   ...
</List>

Also, a way to control the implementation type:

<List type="java.util.ArrayList" itemType="java.lang.Integer">
   ...
</List>

Once working, there definitely needs to be an example (or two) added to the documentation. 

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