[1150] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany
|
---|
| 2 | //
|
---|
| 3 | // Licensed under the Apache License, Version 2.0 (the "License");
|
---|
| 4 | // you may not use this file except in compliance with the License.
|
---|
| 5 | // You may obtain a copy of the License at
|
---|
| 6 | //
|
---|
| 7 | // http://www.apache.org/licenses/LICENSE-2.0
|
---|
| 8 | //
|
---|
| 9 | // Unless required by applicable law or agreed to in writing, software
|
---|
| 10 | // distributed under the License is distributed on an "AS IS" BASIS,
|
---|
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
---|
| 12 | // See the License for the specific language governing permissions and
|
---|
| 13 | // limitations under the License.
|
---|
| 14 |
|
---|
| 15 | package de.ugoe.cs.autoquest.usability.util;
|
---|
| 16 |
|
---|
| 17 | import java.util.Collections;
|
---|
| 18 | import java.util.List;
|
---|
| 19 |
|
---|
| 20 | import org.apache.commons.lang.StringUtils;
|
---|
| 21 |
|
---|
| 22 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode;
|
---|
| 23 | import de.ugoe.cs.autoquest.tasktrees.treeifc.NodeVisitor;
|
---|
| 24 |
|
---|
| 25 | /**
|
---|
| 26 | * <p>
|
---|
| 27 | * TODO comment
|
---|
| 28 | * </p>
|
---|
| 29 | *
|
---|
| 30 | * @author Alexander Deicke
|
---|
| 31 | */
|
---|
| 32 | public class NullNode implements ITaskTreeNode {
|
---|
| 33 |
|
---|
| 34 | /* (non-Javadoc)
|
---|
| 35 | * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode#getName()
|
---|
| 36 | */
|
---|
| 37 | public String getName() {
|
---|
| 38 | return StringUtils.EMPTY;
|
---|
| 39 | }
|
---|
| 40 |
|
---|
| 41 | /* (non-Javadoc)
|
---|
| 42 | * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode#getDescription()
|
---|
| 43 | */
|
---|
| 44 | public String getDescription() {
|
---|
| 45 | return StringUtils.EMPTY;
|
---|
| 46 | }
|
---|
| 47 |
|
---|
| 48 | /* (non-Javadoc)
|
---|
| 49 | * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode#getChildren()
|
---|
| 50 | */
|
---|
| 51 | public List<ITaskTreeNode> getChildren() {
|
---|
| 52 | return Collections.emptyList();
|
---|
| 53 | }
|
---|
| 54 |
|
---|
| 55 | /* (non-Javadoc)
|
---|
| 56 | * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode#equals(de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode)
|
---|
| 57 | */
|
---|
| 58 | public boolean equals(ITaskTreeNode taskTreeNode) {
|
---|
| 59 | return false;
|
---|
| 60 | }
|
---|
| 61 |
|
---|
| 62 | /* (non-Javadoc)
|
---|
| 63 | * @see java.lang.Object#clone()
|
---|
| 64 | */
|
---|
| 65 | @Override
|
---|
| 66 | public NullNode clone() {
|
---|
| 67 | return (NullNode) this;
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | /* (non-Javadoc)
|
---|
| 71 | * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode#accept(de.ugoe.cs.autoquest.tasktrees.treeifc.NodeVisitor)
|
---|
| 72 | */
|
---|
| 73 | public void accept(NodeVisitor visitor) {
|
---|
| 74 |
|
---|
| 75 | }
|
---|
| 76 |
|
---|
| 77 | }
|
---|
| 78 |
|
---|