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.treeifc; |
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16 | |
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17 | /** |
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18 | * <p> |
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19 | * the instance of an {@link IOptional}. The instance may have a child being an |
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20 | * instance of the task marked by the optional of which this is an instance. If this instance |
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21 | * does not have a child, the optional child task was not executed. |
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22 | * </p> |
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23 | * |
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24 | * @author Patrick Harms |
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25 | */ |
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26 | public interface IOptionalInstance extends ITaskInstance { |
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27 | |
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28 | /** |
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29 | * <p> |
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30 | * returns the child of the optional of null if the optional was not executed |
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31 | * </p> |
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32 | * |
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33 | * @return as described |
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34 | */ |
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35 | public ITaskInstance getChild(); |
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36 | |
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37 | /** |
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38 | * <p> |
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39 | * returns the task related to the instance, i.e. the optional. |
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40 | * </p> |
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41 | * |
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42 | * @return as described |
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43 | */ |
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44 | public IOptional getOptional(); |
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45 | |
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46 | /** |
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47 | * <p> |
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48 | * clones this task instance by creating exact clones of each contained instance |
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49 | * </p> |
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50 | * |
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51 | * @return a clone of the task instance |
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52 | */ |
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53 | public IOptionalInstance clone(); |
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54 | |
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55 | } |
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