package org.drools.core.common;
import org.drools.core.beliefsystem.BeliefSet;
import org.drools.core.beliefsystem.ModedAssertion;
import org.drools.core.definitions.rule.impl.RuleImpl;
import org.drools.core.util.LinkedList;
import org.drools.core.spi.Activation;
import org.drools.core.spi.PropagationContext;
import org.kie.internal.runtime.beliefs.Mode;
public class TruthMaintenanceSystemHelper {
public static void removeLogicalDependencies(final InternalFactHandle handle, final PropagationContext propagationContext ) {
final BeliefSet beliefSet = handle.getEqualityKey().getBeliefSet();
if ( beliefSet != null && !beliefSet.isEmpty() ) {
beliefSet.cancel(propagationContext);
}
}
public static void clearLogicalDependencies(final InternalFactHandle handle, final PropagationContext propagationContext ) {
final BeliefSet beliefSet = handle.getEqualityKey().getBeliefSet();
if ( beliefSet != null && !beliefSet.isEmpty() ) {
beliefSet.clear(propagationContext);
}
}
public static <M extends ModedAssertion<M>> void removeLogicalDependencies(final Activation<M> activation,
final PropagationContext context,
final RuleImpl rule) {
final LinkedList<LogicalDependency<M>> list = activation.getLogicalDependencies();
if ( list == null || list.isEmpty() ) {
return;
}
for ( LogicalDependency<M> node = list.getFirst(); node != null; node = node.getNext() ) {
removeLogicalDependency( node, context );
}
activation.setLogicalDependencies( null );
}
public static <M extends ModedAssertion<M>> void removeLogicalDependency(final LogicalDependency<M> node,
final PropagationContext context) {
final BeliefSet<M> beliefSet = ( BeliefSet ) node.getJustified();
beliefSet.getBeliefSystem().delete( node, beliefSet, context );
}
}