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From "Sheryl John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OODT-484) Enhance Workflow Lifecycle to include state change logic
Date Sat, 18 Aug 2012 06:42:38 GMT

    [ https://issues.apache.org/jira/browse/OODT-484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437260#comment-13437260
] 

Sheryl John commented on OODT-484:
----------------------------------

Thanks for clarifying. I like that lifecycles can be shared when you have workflows being
aware or able to pick lifecycles by specifying the lifecycle id. 
Also, I'm looking forward to see how you link the several lifecycle XML files. 
                
> Enhance Workflow Lifecycle to include state change logic
> --------------------------------------------------------
>
>                 Key: OODT-484
>                 URL: https://issues.apache.org/jira/browse/OODT-484
>             Project: OODT
>          Issue Type: Sub-task
>          Components: workflow manager
>    Affects Versions: 0.4
>         Environment: none
>            Reporter: Brian Foster
>            Assignee: Brian Foster
>            Priority: Minor
>             Fix For: 0.5
>
>
> Let's split up the lifecycle XML file into several files (kind have it look like filemgr
element and product-type XML files):
>   1) Define States XML file
>   2) Define Stages XML file
>   3) Mapping of States to Stages XML file
>   4) Mapping of States to next valid States
> I then propose we add a Priority to each Stage (its purpose will become apparent)...
Then we create a new Interface: StatePreCondition... These preconditions would then be attached
to a State... Then when the Workflow Processor detects a sub-processor State change it would
poll each next valid State (determined by mapping in purposed XML file #4) for their PreConditions
and if any of the State's PreConditions pass then that State would become the next State of
that Workflow Processor (if multiple States pass as next State, then the priority attached
to the Stage each State belongs to is used to determine which State becomes next State)

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