package org.drools.core.util.debug;
import java.util.Stack;
import org.drools.common.NetworkNode;
import org.drools.reteoo.FromNode;
import org.drools.reteoo.LeftTuple;
import org.drools.reteoo.FromNode.FromMemory;
public class FromNodeVisitor extends AbstractNetworkNodeVisitor {
public static final FromNodeVisitor INSTANCE = new FromNodeVisitor();
protected FromNodeVisitor() {
}
@Override
protected void doVisit(NetworkNode node,
Stack<NetworkNode> nodeStack,
StatefulKnowledgeSessionInfo info) {
FromNode fn = (FromNode) node;
DefaultNodeInfo ni = (DefaultNodeInfo) info.getNodeInfo( node );
final FromMemory memory = (FromMemory) info.getSession().getNodeMemory( fn );
ni.setMemoryEnabled( true );
if( fn.isLeftTupleMemoryEnabled() ) {
ni.setTupleMemorySize( memory.betaMemory.getLeftTupleMemory().size() );
long handles = 0;
org.drools.core.util.Iterator it = memory.betaMemory.getLeftTupleMemory().iterator();
for ( LeftTuple leftTuple = (LeftTuple) it.next(); leftTuple != null; leftTuple = (LeftTuple) it.next() ) {
LeftTuple child = leftTuple.firstChild;
while( child != null ) {
handles++;
child = child.getLeftParentNext();
}
}
ni.setCreatedFactHandles( handles );
} else {
info.warn( "The left memory for this node is disabled, making it impossible to calculate the number of created handles" );
}
}
}