[1119] | 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.temporalrelation; |
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| 16 | |
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| 17 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode; |
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| 18 | |
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| 19 | /** |
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| 20 | * This rule applies a node scope rule (working only in the scope of the provided parent node) |
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| 21 | * as a tree scope rule, i.e. it applies the provided wrapped rule recursively on the subtree |
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| 22 | * provided by the parent node. It traverses the nodes in post order. |
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| 23 | * |
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| 24 | * @author 2013, last modified by $Author: patrick$ |
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| 25 | */ |
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| 26 | class TreeScopeWrapperRule implements TemporalRelationshipRule { |
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| 27 | |
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| 28 | /** |
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| 29 | * <p> |
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| 30 | * the node scope rule wrapped by this wrapper |
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| 31 | * </p> |
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| 32 | */ |
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| 33 | private TemporalRelationshipRule rule; |
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| 34 | |
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| 35 | /** |
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| 36 | * <p> |
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| 37 | * instantiates the wrapper with the rule to be wrapped |
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| 38 | * </p> |
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| 39 | * |
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| 40 | * @param rule the rule to be wrapped and applied recursively |
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| 41 | */ |
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| 42 | TreeScopeWrapperRule(TemporalRelationshipRule rule) { |
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| 43 | if (rule == null) { |
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| 44 | throw new IllegalArgumentException("rule must not be null"); |
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| 45 | } |
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| 46 | |
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| 47 | this.rule = rule; |
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| 48 | } |
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| 49 | |
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| 50 | /* (non-Javadoc) |
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| 51 | * @see java.lang.Object#toString() |
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| 52 | */ |
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| 53 | @Override |
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| 54 | public String toString() { |
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| 55 | return this.rule.toString() + " (tree scope)"; |
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| 56 | } |
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| 57 | |
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| 58 | /* |
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| 59 | * (non-Javadoc) |
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| 60 | * |
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| 61 | * @see de.ugoe.cs.tasktree.temporalrelation.TemporalRelationshipRule#apply(TaskTreeNode, |
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| 62 | * boolean) |
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| 63 | */ |
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| 64 | @Override |
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| 65 | public RuleApplicationResult apply(ITaskTreeNode parent, boolean finalize) { |
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| 66 | RuleApplicationResult result = null; |
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| 67 | |
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| 68 | if (parent != null) { |
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| 69 | result = new RuleApplicationResult(); |
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| 70 | |
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| 71 | if (parent.getChildren() != null) { |
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| 72 | for (ITaskTreeNode child : parent.getChildren()) { |
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| 73 | merge(result, apply(child, finalize)); |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | merge(result, rule.apply(parent, finalize)); |
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| 78 | } |
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| 79 | |
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| 80 | return result; |
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| 81 | } |
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| 82 | |
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| 83 | /** |
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| 84 | * <p> |
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| 85 | * merges the overall rule application result with an intermediate result |
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| 86 | * </p> |
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| 87 | * |
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| 88 | * @param overallResult the current overall result |
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| 89 | * @param intermediate the intermediate result to be merged into the overall result |
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| 90 | */ |
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| 91 | private void merge(RuleApplicationResult overallResult, RuleApplicationResult intermediate) { |
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| 92 | if (intermediate == null) { |
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| 93 | return; |
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| 94 | } |
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| 95 | |
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| 96 | RuleApplicationStatus overallStatus = overallResult.getRuleApplicationStatus(); |
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| 97 | RuleApplicationStatus intermediateStatus = intermediate.getRuleApplicationStatus(); |
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| 98 | |
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| 99 | if ((intermediateStatus == RuleApplicationStatus.RULE_APPLICATION_FINISHED) || |
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| 100 | ((intermediateStatus == RuleApplicationStatus.RULE_APPLICATION_FEASIBLE) && |
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| 101 | (overallStatus == RuleApplicationStatus.RULE_NOT_APPLIED))) |
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| 102 | { |
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| 103 | overallResult.setRuleApplicationStatus(intermediateStatus); |
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| 104 | } |
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| 105 | |
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| 106 | for (ITaskTreeNode newlyCreatedNode : intermediate.getNewlyCreatedParentNodes()) { |
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| 107 | overallResult.addNewlyCreatedParentNode(newlyCreatedNode); |
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| 108 | } |
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| 109 | } |
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| 110 | |
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| 111 | } |
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