[1113] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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| 2 | // |
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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| 4 | // you may not use this file except in compliance with the License. |
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| 5 | // You may obtain a copy of the License at |
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| 6 | // |
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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| 8 | // |
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| 9 | // Unless required by applicable law or agreed to in writing, software |
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 12 | // See the License for the specific language governing permissions and |
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| 13 | // limitations under the License. |
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| 14 | |
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[922] | 15 | package de.ugoe.cs.autoquest.tasktrees.nodeequality; |
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[807] | 16 | |
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[922] | 17 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTask; |
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| 18 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode; |
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[807] | 19 | |
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| 20 | /** |
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| 21 | * <p> |
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| 22 | * This rule identifies two task tree nodes as lexically equal, if they are both event tasks and |
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| 23 | * if their respective event types and targets equal. |
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| 24 | * </p> |
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| 25 | * |
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| 26 | * @author Patrick Harms |
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| 27 | */ |
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| 28 | public class EventTaskComparisonRule implements NodeComparisonRule { |
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| 29 | |
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| 30 | /* |
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| 31 | * (non-Javadoc) |
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| 32 | * |
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| 33 | * @see de.ugoe.cs.tasktree.nodeequality.NodeEqualityRule#apply(TaskTreeNode, TaskTreeNode) |
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| 34 | */ |
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| 35 | @Override |
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| 36 | public NodeEquality compare(ITaskTreeNode node1, ITaskTreeNode node2) { |
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| 37 | if ((!(node1 instanceof IEventTask)) || (!(node2 instanceof IEventTask))) { |
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| 38 | return null; |
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| 39 | } |
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| 40 | |
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| 41 | if (node1 == node2) { |
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| 42 | return NodeEquality.IDENTICAL; |
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| 43 | } |
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| 44 | |
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| 45 | IEventTask task1 = (IEventTask) node1; |
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| 46 | IEventTask task2 = (IEventTask) node2; |
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| 47 | |
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| 48 | if (task1.getEventType().equals(task2.getEventType()) && |
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| 49 | task1.getEventTarget().equals(task2.getEventTarget())) |
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| 50 | { |
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| 51 | return NodeEquality.LEXICALLY_EQUAL; |
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| 52 | } |
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| 53 | else { |
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| 54 | return NodeEquality.UNEQUAL; |
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| 55 | } |
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| 56 | } |
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| 57 | |
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| 58 | } |
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