[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2700) Allow setting globals for access by the scoring rules

Geoffrey De Smet (JIRA) jira-events at lists.jboss.org
Fri Sep 17 14:05:28 EDT 2010


    [ https://jira.jboss.org/browse/JBRULES-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12551639#action_12551639 ] 

Geoffrey De Smet commented on JBRULES-2700:
-------------------------------------------

For another issue, it should be possible to set the RuleBase instead of supplying the DRL references.
Would that solve this issue? Maybe not because a service needs to be set on the WM, not the RuleBase which creates the WM.

However, every now and then planner needs to create a new WM (especially once we go multi-threaded/vm), currently only in debug mode I believe, so setting it on an individual WM isn't a good solution.
Defining a map of globals to put on any WM that is created, might work.

> Allow setting globals for access by the scoring rules
> -----------------------------------------------------
>
>                 Key: JBRULES-2700
>                 URL: https://jira.jboss.org/browse/JBRULES-2700
>             Project: Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>            Reporter: Wouter Horré
>            Assignee: Geoffrey De Smet
>
> Currently, it is not possible to set a global variable in the working memory used by the solver. If a scoring rule needs an external helper for calculating scores (e.g. a dependency injected with OSGi DS), a workaround using a static variable in some class accessible by the scoring rules is needed.
> The easiest implementation is probably a new method in the Solver interface:
> public WorkingMemory getWorkingMemory();
> which provides access to the working memory used by the solver.

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