// Copyright 2012 Georg-August-Universität Göttingen, Germany
//
// 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 de.ugoe.cs.autoquest.tasktrees.taskequality;
import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask;
import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance;
/**
*
* This comparison rule returns TaskEquality.IDENTICAL
if the comparison of the two
* tasks using the ==
operator returns true. Else it returns null to denote, that
* it can not compare the tasks.
*
*
* @version $Revision: $ $Date: 19.02.2012$
* @author 2012, last modified by $Author: patrick$
*/
public class TaskIdentityRule implements TaskComparisonRule {
/* (non-Javadoc)
* @see TaskComparisonRule#isApplicable(ITask, ITask)
*/
@Override
public boolean isApplicable(ITask task1, ITask task2) {
return (task1 == task2);
}
/* (non-Javadoc)
* @see TaskComparisonRule#areLexicallyEqual(ITask, ITask)
*/
@Override
public boolean areLexicallyEqual(ITask task1, ITask task2) {
return (task1 == task2);
}
/* (non-Javadoc)
* @see TaskComparisonRule#areSyntacticallyEqual(ITask, ITask)
*/
@Override
public boolean areSyntacticallyEqual(ITask task1, ITask task2) {
return (task1 == task2);
}
/* (non-Javadoc)
* @see TaskComparisonRule#areSemanticallyEqual(ITask, ITask)
*/
@Override
public boolean areSemanticallyEqual(ITask task1, ITask task2) {
return (task1 == task2);
}
/* (non-Javadoc)
* @see TaskComparisonRule#compare(ITask, ITask)
*/
@Override
public TaskEquality compare(ITask task1, ITask task2) {
if (isApplicable(task1, task2)) {
return TaskEquality.IDENTICAL;
}
else {
return null;
}
}
/* (non-Javadoc)
* @see TaskComparisonRule#isApplicable(ITaskInstance, ITaskInstance)
*/
@Override
public boolean isApplicable(ITaskInstance instance1, ITaskInstance instance2) {
return (instance1.getTask() == instance2.getTask());
}
/* (non-Javadoc)
* @see TaskComparisonRule#areLexicallyEqual(ITaskInstance, ITaskInstance)
*/
@Override
public boolean areLexicallyEqual(ITaskInstance instance1, ITaskInstance instance2) {
return (instance1.getTask() == instance2.getTask());
}
/* (non-Javadoc)
* @see TaskComparisonRule#areSyntacticallyEqual(ITaskInstance, ITaskInstance)
*/
@Override
public boolean areSyntacticallyEqual(ITaskInstance instance1, ITaskInstance instance2) {
return (instance1.getTask() == instance2.getTask());
}
/* (non-Javadoc)
* @see TaskComparisonRule#areSemanticallyEqual(ITaskInstance, ITaskInstance)
*/
@Override
public boolean areSemanticallyEqual(ITaskInstance instance1, ITaskInstance instance2) {
return (instance1.getTask() == instance2.getTask());
}
/* (non-Javadoc)
* @see TaskComparisonRule#compare(ITaskInstance, ITaskInstance)
*/
@Override
public TaskEquality compare(ITaskInstance instance1, ITaskInstance instance2) {
if (isApplicable(instance1, instance2)) {
return TaskEquality.IDENTICAL;
}
else {
return null;
}
}
}