Unlinkable.java

/**
 * 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.reteoo;

/**
 * A marker interface to specify unlinkable node memories.
 * 
 * @author lgomes
 */
public interface Unlinkable {

	/** Whether or not the left side is unlinked. */
	boolean isLeftUnlinked();

	/** Whether or not the right side is unlinked. */
	boolean isRightUnlinked();
	
	void linkLeft();
	
	void linkRight();
	
	void unlinkLeft();
	
	void unlinkRight();

}