/simulatest-environment/src/main/java/org/simulatest/environment/tree/Node.java

 1package org.simulatest.environment.tree;
 2
 3import java.util.LinkedList;
 4
 5public class Node<T> {
 6	
 7	private T value;
 8	private Node<T> parent;
 9	private LinkedList<Node<T>> children;
10	
11	public Node(T value) {
12		this.value = value;
13		this.children = new LinkedList<Node<T>>();
14	}
15
16	public void addChild(Node<T> child) {
17		if (children.contains(child)) return;
18		
19		child.setParent(this);
20		children.add(child);
21	}
22
23	public T getValue() {
24		return value;
25	}
26	
27	public Node<T> getParent() {
28		return parent;
29	}
30
31	protected void setParent(Node<T> parent) {
32		this.parent = parent;
33	}
34
35	public boolean hasParent() {
36		return parent != null;
37	}
38
39	public LinkedList<Node<T>> getChildren() {
40		return children;
41	}
42	
43	public Node<T> getFirstChild() {
44		return children.isEmpty() ? null : children.getFirst();
45	}
46	
47	public Node<T> getLastChild() {
48		return children.isEmpty() ? null : children.getLast();
49	}
50	
51	public boolean isLastChild() {
52		return hasParent() ? isTheLastChildOfParent() : false;
53	}
54	
55	private boolean isTheLastChildOfParent() {
56		return this.equals(getParent().getLastChild());
57	}
58	
59	public int totalQuantityOfNodes() {
60		int size = 1;
61		for (Node<T> child : children) size += child.totalQuantityOfNodes();
62		
63		return size;
64	}
65	
66	public void print(StringBuilder builder) {
67		print(builder, "");
68	}
69
70	private void print(StringBuilder builder, String margin) {
71		builder.append(margin).append("-").append(value.toString()).append("\n");
72		for (Node<T> child : children) child.print(builder, margin + "   ");
73	}
74	
75	public T getParentValue() {
76		return (getParent() != null) ? getParent().getValue() : null; 
77	}
78	
79}