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https://issues.apache.org/jira/browse/PIVOT-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905627#comment-16905627
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Roger Whitcomb commented on PIVOT-1045:
---------------------------------------

First iteration:

Sending core\src\org\apache\pivot\collections\ArrayAdapter.java
Sending core\src\org\apache\pivot\collections\ArrayList.java
Sending core\src\org\apache\pivot\collections\EnumList.java
Adding core\src\org\apache\pivot\collections\ReadOnlySequence.java
Sending core\src\org\apache\pivot\collections\immutable\ImmutableList.java
Sending core\test\org\apache\pivot\collections\test\ArrayListTest.java
Sending wtk\src\org\apache\pivot\wtk\content\NumericSpinnerData.java
Transmitting file data .......done
Committing transaction...
Committed revision 1864990.

> Refactor read-only classes to use a common abstract class to reduce code
> ------------------------------------------------------------------------
>
>                 Key: PIVOT-1045
>                 URL: https://issues.apache.org/jira/browse/PIVOT-1045
>             Project: Pivot
>          Issue Type: Improvement
>          Components: core-collections
>            Reporter: Roger Whitcomb
>            Assignee: Roger Whitcomb
>            Priority: Minor
>
> All of the "read-only" collections (such as ArrayAdapter, EnumList, 
> ImmutableList) share the concept that "add", "insert", "remove", etc. all 
> throw an exception because they are unsupported in a read-only collection. It 
> would reduce code and expose the common functionality if they were all 
> implemented on top of a single abstract class the provides a uniform 
> implementation of these unsupported methods.
> I propose to implement a ReadOnlySequence class that does this and refactor 
> all other existing places (at least) with the common subclass.



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