[teiid-issues] [JBoss JIRA] Resolved: (TEIID-622) Simplify configuration property metadata

[Steven Hawkins (JIRA)]

     [ https://jira.jboss.org/jira/browse/TEIID-622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-622.
----------------------------------

    Resolution: Done


Implemented the changes as described and scrubbed the configs that were in the project.

> Simplify configuration property metadata
> ----------------------------------------
>
>                 Key: TEIID-622
>                 URL: https://jira.jboss.org/jira/browse/TEIID-622
>             Project: Teiid
>          Issue Type: Task
>          Components: Common
>    Affects Versions: 6.1.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 6.1.0
>
>
> In general we have too much property metadata:
> required from multiplicity 0..1, 1 (no others are currently used).
> hasDefault
> expert
> hidden
> preferred
> modifiable
> which gives us 64 possible state combinations. 
> Proposed simplifications:
> 1. remove the use of multiplicity and just use a required attribute.
> 2. remove hidden and instead use modifiable=false.
> 3. remove preferred and instead use expert=false (the default).
> !modifiable would imply expert=true and required=false. That leaves us with only 8 states to consider based upon required/expert/hasDefault - but there's only 1 state we even care about the presence of a default value (other than for a display color). That leaves us with:
> required expert outcome
> t             t          1) Valid only if there is a default value, then it's an Editable property that should only be shown in expert mode
> t             f          2) Editable property that should always be shown
> f             t          3) Editable optional property that should be shown only in expert
> f             f          4) Editable optional property that should always be shown
> From a display perspective we will by default show cases 2 and 4 and then show 1 and 3 if "show expert" is selected.  Alternatively instead of show expert we could also use "show all". 
> We should make provisions for old metadata to be read, such as still looking for the hidden and multiplicity attributes.

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