/**
* Copyright 2005 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.common;
import org.drools.FactHandle;
import org.drools.core.util.AbstractBaseLinkedListNode;
import org.drools.spi.Activation;
/**
* LogicalDependency is a special node for LinkedLists that maintains
* references for the Activation justifier and the justified FactHandle.
*
* @author <a href="mailto:mark.proctor@jboss.com">Mark Proctor</a>
*
*/
public class LogicalDependency extends AbstractBaseLinkedListNode {
private Activation justifier;
private FactHandle factHandle;
public LogicalDependency(final Activation justifier,
final FactHandle factHandle) {
super();
this.justifier = justifier;
this.factHandle = factHandle;
}
public FactHandle getFactHandle() {
return this.factHandle;
}
public Activation getJustifier() {
return this.justifier;
}
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( object == null || !(object instanceof LogicalDependency) ) {
return false;
}
final LogicalDependency other = (LogicalDependency) object;
return (this.getJustifier() == other.getJustifier() && this.getFactHandle() == other.getFactHandle());
}
public int hashCode() {
return this.justifier.hashCode();
}
}