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1 package jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index;
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2
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3 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
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4 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNodeAttributes;
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5 import fj.Ord;
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6 import fj.data.List;
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7 import fj.data.Option;
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8 import fj.data.TreeMap;
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9
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10 public class DefaultIndexEditor implements IndexEditor {
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11
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151
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12 Index index;
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13
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151
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14 public DefaultIndexEditor(Index index) {
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15 this.index = index;
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16 }
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17
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18 @Override
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19 public IndexEditor delete(TreeNode node) {
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20 TreeNodeAttributes attribute = node.getAttributes();
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21 List<String> keys = attribute.getKeys();
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151
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22 Index newIndexTreeMap = index;
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23 for (String key : keys) {
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24 Option<TreeMap<String, List<TreeNode>>> indexOp = index.get(key);
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147
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25 if (indexOp.isSome()) {
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26 TreeMap<String, List<TreeNode>> index = indexOp.some();
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27 String value = attribute.getString(key);
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28 Option<List<TreeNode>> nodeListOp = index.get(value);
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29 if (nodeListOp.isSome()) {
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30 List<TreeNode> nodeList = nodeListOp.some();
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31 List<TreeNode> newNodeList = List.nil();
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32 for (TreeNode indexingNode : nodeList) {
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33 if (indexingNode != node)
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34 newNodeList = newNodeList.cons(indexingNode);
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35 }
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36 TreeMap<String, List<TreeNode>> newIndex;
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37 newIndex = index.set(value, newNodeList);
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38 newIndexTreeMap = newIndexTreeMap.set(key, newIndex);
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39 }
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40
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41 }
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42 }
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43
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44 return new DefaultIndexEditor(newIndexTreeMap);
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45 }
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46
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47 @Override
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48 public IndexEditor add(TreeNode node) {
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49 TreeNodeAttributes attribute = node.getAttributes();
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50 List<String> keys = attribute.getKeys();
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51 TreeMap<String, TreeMap<String, List<TreeNode>>> newIndexTreeMap = index;
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52 for (String key : keys) {
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53 Option<TreeMap<String, List<TreeNode>>> indexOp = index.get(key);
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147
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54 if (indexOp.isSome()) {
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55 TreeMap<String, List<TreeNode>> index = indexOp.some();
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56 String value = attribute.getString(key);
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57 Option<List<TreeNode>> nodeListOp = index.get(value);
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58 if (nodeListOp.isSome()) {
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59 List<TreeNode> nodeList = nodeListOp.some();
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60 List<TreeNode> newNodeList = nodeList.cons(node);
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61 TreeMap<String, List<TreeNode>> newIndex = index.set(value, newNodeList);
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62 newIndexTreeMap = newIndexTreeMap.set(key, newIndex);
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63 } else { // test
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64 List<TreeNode> nodeList = List.nil();
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65 value = attribute.getString(key);
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66 List<TreeNode> newNodeList = nodeList.cons(node);
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67 TreeMap<String, List<TreeNode>> newIndex = index.set(value, newNodeList);
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68 newIndexTreeMap = newIndexTreeMap.set(key, newIndex);
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69 }
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70
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71 } else { // test
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72 TreeMap<String, List<TreeNode>> index = TreeMap.empty(Ord.stringOrd);
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73 List<TreeNode> nodeList = List.nil();
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74 String value = attribute.getString(key);
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75 List<TreeNode> newNodeList = nodeList.cons(node);
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76 TreeMap<String, List<TreeNode>> newIndex = index.set(value, newNodeList);
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77 newIndexTreeMap = newIndexTreeMap.set(key, newIndex);
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78 }
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79 }
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80
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81 return new DefaultIndexEditor(newIndexTreeMap);
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82 }
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83
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84 @Override
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85 public TreeMap<String, TreeMap<String, List<TreeNode>>> getIndex() {
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86 return index;
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87 }
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88
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89 @Override
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90 public IndexEditor edit(TreeNode node) {
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91 return this;
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92 }
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93
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94 }
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