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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15 | package de.ugoe.cs.autoquest.tasktrees.treeimpl; |
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16 | |
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17 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptional; |
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18 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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19 | |
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20 | /** |
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21 | * <p> |
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22 | * this is the default implementation of the interface {@link IOptional}. It does not do anything |
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23 | * fancy except implementing the interface. |
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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 | class Optional extends MarkingTemporalRelationship implements IOptional { |
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29 | |
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30 | /** |
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31 | * <p> |
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32 | * default serial version UID |
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33 | * </p> |
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34 | */ |
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35 | private static final long serialVersionUID = 1L; |
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36 | |
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37 | /** |
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38 | * <p> |
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39 | * simple constructor providing the base class with a human readable name of the type of this |
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40 | * task |
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41 | * </p> |
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42 | */ |
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43 | Optional() { |
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44 | super("optionality"); |
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45 | } |
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46 | |
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47 | /* (non-Javadoc) |
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48 | * @see de.ugoe.cs.autoquest.tasktrees.treeimpl.MarkingTemporalRelationship#setMarkedTask(ITask) |
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49 | */ |
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50 | @Override |
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51 | protected void setMarkedTask(ITask markedTask) { |
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52 | if (markedTask instanceof IOptional) { |
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53 | throw new IllegalArgumentException |
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54 | ("the marked task of an optional must not be an optional"); |
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55 | } |
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56 | |
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57 | super.setMarkedTask(markedTask); |
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58 | } |
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59 | |
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60 | /* (non-Javadoc) |
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61 | * @see de.ugoe.cs.autoquest.tasktrees.treeimpl.MarkingTemporalRelationship#clone() |
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62 | */ |
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63 | @Override |
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64 | public Optional clone() { |
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65 | return (Optional) super.clone(); |
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66 | } |
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67 | |
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68 | } |
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