BetaNodeVisitor.java example

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/**
 * Copyright 2010 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      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.core.util.debug;

import java.util.Stack;

import org.drools.common.NetworkNode;
import org.drools.reteoo.BetaMemory;
import org.drools.reteoo.BetaNode;

public class BetaNodeVisitor extends AbstractNetworkNodeVisitor {
    
    public static final BetaNodeVisitor INSTANCE = new BetaNodeVisitor();
    
    protected BetaNodeVisitor() {
    }

    @Override
    protected void doVisit(NetworkNode node,
                           Stack<NetworkNode> nodeStack,
                           StatefulKnowledgeSessionInfo info) {
        BetaNode bn = (BetaNode) node;
        DefaultNodeInfo ni = (DefaultNodeInfo) info.getNodeInfo( node );
        final BetaMemory memory = (BetaMemory) info.getSession().getNodeMemory( bn );
        
        ni.setMemoryEnabled( true );
        
        if( bn.isObjectMemoryEnabled() ) {
            ni.setFactMemorySize( memory.getRightTupleMemory().size() );
        }
        if( bn.isLeftTupleMemoryEnabled() ) {
            ni.setTupleMemorySize( memory.getLeftTupleMemory().size() );
        }

    }

}