org.drools.core.common.UpdateContext Maven / Gradle / Ivy
/*
* 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.core.common;
import java.util.Stack;
public class UpdateContext {
private Stack visitedNodes = new Stack();
public void startVisitNode(BaseNode baseNode) {
visitedNodes.push(baseNode);
}
public void endVisit() {
visitedNodes.pop();
}
public boolean isVisiting(BaseNode baseNode) {
return !visitedNodes.isEmpty() && visitedNodes.peek().equals(baseNode);
}
}