[jboss-jira] [JBoss JIRA] (JBRULES-3329) Add API to allow globals to be specified for the working memory

[David Glassborow (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-3329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12665703#comment-12665703 ] 

David Glassborow commented on JBRULES-3329:
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Related post: http://stackoverflow.com/questions/6855209/setting-global-variables-in-working-memory-in-drools-planner

Your point in that posting about delta based scoring is important. If this anyway to make delta based scoring still work if the global returns a cost for the cost factor ? or an injected global is the constant ?
                
> Add API to allow globals to be specified for the working memory
> ---------------------------------------------------------------
>
>                 Key: JBRULES-3329
>                 URL: https://issues.jboss.org/browse/JBRULES-3329
>             Project: Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>    Affects Versions: FUTURE
>            Reporter: David Glassborow
>            Assignee: Geoffrey De Smet
>
> Provide an API to allow globals to be specified to be inserted into the working memory. 
> This would allow customisation of things like constraint costs. Although this could be done by non-global facts being inserted, performance would be better using a global rather than requiring an instance fact to be matched.
> Discussions with Ge0ffrey on IRC revealed that more than 1 working memory exists, and in fact in future versions supporting multithreading or GAs, they may well be many more than one WM, so we need an API that will inject the global into all instances of the WM, just like the global cost constraint global is.

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