<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<br>
<div class="moz-cite-prefix">Op 13-02-13 17:00, André Fróes schreef:<br>
</div>
<blockquote
cite="mid:CAC8f_wWLG+c0x0NPzmU42nyC2G1UaN0NVgRWw7ZD_kerQCi=0g@mail.gmail.com"
type="cite">
<div dir="ltr">Hello, I am getting an NPE when trying to solve a
simple problem with 3 workorder and 3 engineers.
<div>------------</div>
<div>
<div>Exception in thread "main" java.lang.NullPointerException</div>
<div>
<span class="" style="white-space:pre"> </span>at
java.util.ArrayList.addAll(Unknown Source)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.domain.solution.SolutionDescriptor.getAllFacts(SolutionDescriptor.java:178)</div>
</div>
</div>
</blockquote>
Take a look at<br>
<a class="moz-txt-link-freetext" href="https://github.com/droolsjbpm/drools-planner/blob/5.5.x/drools-planner-core/src/main/java/org/drools/planner/core/domain/solution/SolutionDescriptor.java#L178">https://github.com/droolsjbpm/drools-planner/blob/5.5.x/drools-planner-core/src/main/java/org/drools/planner/core/domain/solution/SolutionDescriptor.java#L178</a><br>
Looks like your Solution implementation doesn't respect the
Solution.getProblemFacts() contract.<br>
<blockquote
cite="mid:CAC8f_wWLG+c0x0NPzmU42nyC2G1UaN0NVgRWw7ZD_kerQCi=0g@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.score.director.drools.DroolsScoreDirector.getWorkingFacts(DroolsScoreDirector.java:88)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.score.director.drools.DroolsScoreDirector.resetWorkingMemory(DroolsScoreDirector.java:81)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.score.director.drools.DroolsScoreDirector.setWorkingSolution(DroolsScoreDirector.java:70)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.solver.scope.DefaultSolverScope.setWorkingSolutionFromBestSolution(DefaultSolverScope.java:158)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.solver.DefaultSolver.solvingStarted(DefaultSolver.java:176)</div>
<div><span class="" style="white-space:pre"> </span>at
org.drools.planner.core.solver.DefaultSolver.solve(DefaultSolver.java:154)</div>
<div><span class="" style="white-space:pre"> </span>at
com.swa.planner.snap1.app.SortWorkOrder.main(SortWorkOrder.java:41)</div>
</div>
<div>-----------------</div>
<div><br>
</div>
<div style="">the rule for it is simple (adapted from
cloudbalancing):</div>
<div style=""><br>
</div>
<div style="">----------</div>
<div style="">
<div>rule "requiredWorkTimeTotal"</div>
<div> when</div>
<div> $engineer : Engineer($worktime : worktime )</div>
<div> $requiredEngineerWorktimeTotal : Number(intValue
> $worktime) from accumulate(</div>
<div> WorkOrder(</div>
<div> engineer == $engineer,</div>
<div> $requiredWorktime : requiredWorktime ),</div>
<div> sum($requiredWorktime)</div>
<div> )</div>
<div> then</div>
<div> insertLogical(new
IntConstraintOccurrence("requiredWorkTimeTotal",
ConstraintType.NEGATIVE_HARD,</div>
<div> $requiredEngineerWorktimeTotal.intValue()
- $worktime,</div>
<div> $engineer));</div>
<div>end</div>
<div>----------</div>
<div><br>
</div>
<div style="">I'm rebuilding the app bit by bit and then
evolve it. The skill is not considered yet to make the
comparison, just worktime. This is the data i'm working with
right now:</div>
<div style=""><br>
</div>
<div style="">-----------</div>
<div style="">
<div>List<Engineer> engineerList = new
ArrayList<Engineer>();</div>
<div>engineerList.add(new Engineer(1l, 8, ABC1, "Fabio"));</div>
<div>engineerList.add(new Engineer(2l, 8, ABC2, "Qwert"));</div>
<div>engineerList.add(new Engineer(3l, 8, ABC3, "Trewq"));</div>
<div><br>
</div>
<div>List<WorkOrder> workOrderList = new
ArrayList<WorkOrder>();</div>
<div>workOrderList.add(new WorkOrder(101l, 8, ABC1));</div>
<div>workOrderList.add(new WorkOrder(102L, 8, ABC2));</div>
<div>workOrderList.add(new WorkOrder(103L, 8, ABC3));</div>
<div>-----------</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
rules-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a>
<a class="moz-txt-link-freetext" href="https://lists.jboss.org/mailman/listinfo/rules-users">https://lists.jboss.org/mailman/listinfo/rules-users</a></pre>
</blockquote>
<br>
</body>
</html>