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1 package jungle.impl;
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2
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3 import jungle.core.Attributes;
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4 import jungle.core.Children;
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5 import jungle.core.Links;
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6 import jungle.core.TreeNode;
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7
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8 public class SimpleTreeNode implements TreeNode
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9 {
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10 private final Children children;
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11 private final Links links;
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12 private final Attributes attrs;
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13 private final String id;
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14
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15 public SimpleTreeNode(String _id)
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16 {
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17 this(_id,new SimpleAttributes(),new SimpleChildren(),new SimpleLinks());
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18 }
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19
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20 private SimpleTreeNode(String _id,Attributes _attrs,Children _children,Links _links)
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21 {
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22 if(_id == null || _id.length() == 0){
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23 throw new NullPointerException("_id is null or empty.");
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24 }
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25
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26 id = _id;
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27 attrs = _attrs;
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28 children = _children;
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29 links = _links;
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30 }
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31
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32 public String get(String _key)
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33 {
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34 if(_key == null){
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35 throw new NullPointerException("_key is null");
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36 }
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37
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38 return attrs.get(_key);
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39 }
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40
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41 public Children children()
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42 {
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43 return children;
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44 }
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45
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46 public Links links()
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47 {
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48 return links;
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49 }
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50
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51 public String cid()
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52 {
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53 return id;
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54 }
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55
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56 @Override
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57 public int hashCode()
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58 {
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59 return id.hashCode();
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60 }
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61
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62 @Override
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63 public boolean equals(Object _obj)
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64 {
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65 if(_obj instanceof SimpleTreeNode){
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66 SimpleTreeNode node = (SimpleTreeNode)_obj;
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67 return id.equals(node.id);
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68 }
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69 return false;
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70 }
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71
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72 }
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