[teiid-issues] [JBoss JIRA] Updated: (TEIID-321) Refactor symbol language objects

[Steven Hawkins (JIRA)]

     [ https://jira.jboss.org/jira/browse/TEIID-321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-321:
---------------------------------

     Original Estimate: 1 week
    Remaining Estimate: 1 week
           Component/s: Query Engine
         Fix Version/s: 6.1.0
     Affects Version/s: 6.0.0
              Assignee: Steven Hawkins
            Complexity: High


> Refactor symbol language objects
> --------------------------------
>
>                 Key: TEIID-321
>                 URL: https://jira.jboss.org/jira/browse/TEIID-321
>             Project: Teiid
>          Issue Type: Task
>          Components: Query Engine
>    Affects Versions: 6.0.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 6.1.0
>
>   Original Estimate: 1 week
>  Remaining Estimate: 1 week
>
> Defect Tracker #25035: The current structuring of Symbol objects is confusing and makes planning more difficult than necessary.  Changes that should be made:
> AggregateSymbol should become AggregateFunction (which should not inherit from Function) and not be a Symbol.
> SingleElementSymbol, ExpressionSymbol, and AliasSymbol should be merged to a single class DerivedSymbol
> DerivedSymbol and MultipleElementSymbol should implement SelectSymbol (as an interface rather than base class) and SelectSymbol should provide a method for getting the projected symbols.
> ElementSymbol should not directly be a DerivedSymbol.

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