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52 changes: 52 additions & 0 deletions
52
core/src/main/java/ai/timefold/solver/core/impl/bavet/AbstractSession.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package ai.timefold.solver.core.impl.bavet; | ||
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| import java.util.IdentityHashMap; | ||
| import java.util.Map; | ||
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| import ai.timefold.solver.core.impl.bavet.uni.AbstractForEachUniNode; | ||
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| public abstract class AbstractSession { | ||
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| protected final NodeNetwork nodeNetwork; | ||
| private final Map<Class<?>, AbstractForEachUniNode<Object>[]> effectiveClassToNodeArrayMap; | ||
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| protected AbstractSession(NodeNetwork nodeNetwork) { | ||
| this.nodeNetwork = nodeNetwork; | ||
| this.effectiveClassToNodeArrayMap = new IdentityHashMap<>(nodeNetwork.forEachNodeCount()); | ||
| } | ||
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| public final void insert(Object fact) { | ||
| var factClass = fact.getClass(); | ||
| for (var node : findNodes(factClass)) { | ||
| node.insert(fact); | ||
| } | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| private AbstractForEachUniNode<Object>[] findNodes(Class<?> factClass) { | ||
| // Map.computeIfAbsent() would have created lambdas on the hot path, this will not. | ||
| var nodeArray = effectiveClassToNodeArrayMap.get(factClass); | ||
| if (nodeArray == null) { | ||
| nodeArray = nodeNetwork.getForEachNodes(factClass) | ||
| .filter(AbstractForEachUniNode::supportsIndividualUpdates) | ||
| .toArray(AbstractForEachUniNode[]::new); | ||
| effectiveClassToNodeArrayMap.put(factClass, nodeArray); | ||
| } | ||
| return nodeArray; | ||
| } | ||
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| public final void update(Object fact) { | ||
| var factClass = fact.getClass(); | ||
| for (var node : findNodes(factClass)) { | ||
| node.update(fact); | ||
| } | ||
| } | ||
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| public final void retract(Object fact) { | ||
| var factClass = fact.getClass(); | ||
| for (var node : findNodes(factClass)) { | ||
| node.retract(fact); | ||
| } | ||
| } | ||
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| } |
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2 changes: 1 addition & 1 deletion
2
...solver/core/impl/bavet/common/Stream.java → ...r/core/impl/bavet/common/BavetStream.java
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2 changes: 1 addition & 1 deletion
2
core/src/main/java/ai/timefold/solver/core/impl/bavet/common/BavetStreamBinaryOperation.java
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68 changes: 68 additions & 0 deletions
68
core/src/main/java/ai/timefold/solver/core/impl/bavet/uni/ForEachFromSolutionUniNode.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package ai.timefold.solver.core.impl.bavet.uni; | ||
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| import java.util.Collections; | ||
| import java.util.IdentityHashMap; | ||
| import java.util.Objects; | ||
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| import ai.timefold.solver.core.api.move.SolutionExtractor; | ||
| import ai.timefold.solver.core.api.move.SolutionView; | ||
| import ai.timefold.solver.core.impl.bavet.common.tuple.TupleLifecycle; | ||
| import ai.timefold.solver.core.impl.bavet.common.tuple.UniTuple; | ||
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| public final class ForEachFromSolutionUniNode<Solution_, A> | ||
| extends ForEachUniNode<A> { | ||
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| private final SolutionExtractor<Solution_, A> solutionExtractor; | ||
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| public ForEachFromSolutionUniNode(Class<A> forEachClass, SolutionExtractor<Solution_, A> solutionExtractor, | ||
| TupleLifecycle<UniTuple<A>> nextNodesTupleLifecycle, int outputStoreSize) { | ||
| super(forEachClass, nextNodesTupleLifecycle, outputStoreSize); | ||
| this.solutionExtractor = Objects.requireNonNull(solutionExtractor); | ||
| } | ||
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| public void read(SolutionView<Solution_> solutionView, Solution_ solution) { | ||
| var seenFactSet = Collections.newSetFromMap(new IdentityHashMap<A, Boolean>()); | ||
| solutionExtractor.apply(solutionView, solution).forEach(a -> { | ||
| if (seenFactSet.contains(a)) { // Eliminate duplicates in the source data. | ||
| return; | ||
| } | ||
| seenFactSet.add(a); | ||
| var tuple = tupleMap.get(a); | ||
| if (tuple == null) { | ||
| super.insert(a); | ||
| } else { | ||
| updateExisting(a, tuple); | ||
| } | ||
| }); | ||
| // Retract all tuples that were not seen in the source data. | ||
| var iterator = tupleMap.entrySet().iterator(); | ||
| while (iterator.hasNext()) { | ||
| var entry = iterator.next(); | ||
| var fact = entry.getKey(); | ||
| if (!seenFactSet.contains(fact)) { | ||
| iterator.remove(); | ||
| retractExisting(fact, entry.getValue()); | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public void insert(A a) { | ||
| throw new IllegalStateException("Impossible state: solution-based node cannot insert."); | ||
| } | ||
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| @Override | ||
| public void update(A a) { | ||
| throw new IllegalStateException("Impossible state: solution-based node cannot update."); | ||
| } | ||
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| @Override | ||
| public void retract(A a) { | ||
| throw new IllegalStateException("Impossible state: solution-based node cannot retract."); | ||
| } | ||
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| @Override | ||
| public boolean supportsIndividualUpdates() { | ||
| return false; | ||
| } | ||
| } |
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