package org.drools.core.common;
import org.drools.core.impl.StatefulKnowledgeSessionImpl;
import org.drools.core.phreak.RuleAgendaItem;
import org.drools.core.reteoo.LeftTuple;
import org.drools.core.spi.Activation;
import org.drools.core.util.Iterator;
import org.drools.core.util.index.LeftTupleList;
import org.kie.internal.runtime.StatefulKnowledgeSession;
import java.util.ArrayList;
import java.util.List;
public class PhreakActiveActivationIterator
implements
Iterator {
private DefaultAgenda agenda;
List<AgendaItem> items;
java.util.Iterator itemsIter;
PhreakActiveActivationIterator() {
}
private PhreakActiveActivationIterator(InternalWorkingMemory wm) {
agenda = (DefaultAgenda) wm.getAgenda();
items = new ArrayList<AgendaItem>();
for ( InternalAgendaGroup group : agenda.getAgendaGroupsMap().values() ) {
for ( Activation act : group.getActivations() ) {
RuleAgendaItem item = ( RuleAgendaItem ) act;
LeftTupleList list = item.getRuleExecutor().getLeftTupleList();
for ( LeftTuple lt = list.getFirst(); lt != null; lt = (LeftTuple) lt.getNext() ) {
items.add( (AgendaItem) lt );
}
}
}
itemsIter = items.iterator();
}
public static PhreakActiveActivationIterator iterator(InternalWorkingMemory wm) {
return new PhreakActiveActivationIterator( wm );
}
public static PhreakActiveActivationIterator iterator(StatefulKnowledgeSession ksession) {
return new PhreakActiveActivationIterator( ((StatefulKnowledgeSessionImpl) ksession).getInternalWorkingMemory() );
}
public Object next() {
if ( itemsIter.hasNext() ) {
return itemsIter.next();
} else {
return null;
}
}
}