[jboss-jira] [JBoss JIRA] (JBRULES-3334) AbstractTabuAcceptor doesn't add the starting solution as tabu
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https://issues.jboss.org/browse/JBRULES-3334?page=com.atlassian.jira.plug...
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Patrik Dufresne commented on JBRULES-3334:
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When adding the first solution to the tabu-map, I'm wondering what Index value I
should provide since a value of 0 represent the first step. The Index -1 is used to
represent a 'not found' tabu. Without major change, I think the best is to put the
first solution with Index 0. The tabu-map will then have two solutions with the same index
value : the first solution and the step 0 solution.
I've create a pull request, not sure I've done it right. It's my first time
with github.
AbstractTabuAcceptor doesn't add the starting solution as tabu
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Key: JBRULES-3334
URL: https://issues.jboss.org/browse/JBRULES-3334
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-planner
Affects Versions: 5.3.1.Final
Reporter: Patrik Dufresne
Assignee: Geoffrey De Smet
When setting a complete solution tabu, the starting solution is not considered a Tabu
making it possible to visit the same solution again.
Consider a situation where there is construction phase followed by a local search phase.
The construction phase will create a solution that will not be added to the tabu list of
the local search phased.
To fix it, I suggest to override the function phaseStarted(...) in SolutionTabuAcceptor
to add solution to the Tabu map.
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