org.drools.reteoo.common.ReteAgendaGroupQueueImpl Maven / Gradle / Ivy

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/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.drools.reteoo.common;

import org.drools.core.common.AgendaGroupQueueImpl;
import org.drools.core.common.AgendaItem;
import org.drools.core.conflict.SequentialConflictResolver;
import org.drools.core.impl.InternalKnowledgeBase;
import org.drools.core.spi.Activation;
import org.drools.core.util.BinaryHeapQueue;

public class ReteAgendaGroupQueueImpl extends AgendaGroupQueueImpl {

    public ReteAgendaGroupQueueImpl( String name, InternalKnowledgeBase kBase ) {
        super( name, kBase );
    }

    @Override
    protected BinaryHeapQueue initPriorityQueue( InternalKnowledgeBase kBase ) {
        return isSequential() ?
                new BinaryHeapQueue.Synchronized(new SequentialConflictResolver()) :
                new BinaryHeapQueue.Synchronized(kBase.getConfiguration().getConflictResolver());
    }

    @Override
    public Activation[] getActivations() {
        synchronized (this.priorityQueue) {
            return (Activation[]) this.priorityQueue.toArray(new AgendaItem[this.priorityQueue.size()]);
        }
    }
}