adding huffman node and a context by which to increment the id

src/main/java/com/hashbangbash/trie/HuffNode.java

@@ -0,0 +1,67 @@
+package com.hashbangbash.trie;
+
+public class HuffNode {
+    private long id = 0;
+    private Object value = null;
+    private int weight = 0;
+    private HuffNode left = null;
+    private HuffNode right = null;
+    private NodeContext ctx = null;
+
+    public HuffNode(Object value, int weight, HuffNode left, HuffNode right) {
+        this(new NodeContext(), value, weight, left, right);
+    }
+
+    public HuffNode(NodeContext ctx, Object value, int weight, HuffNode left, HuffNode right) {
+        this.ctx = ctx;
+        this.value = value;
+        this.weight = weight;
+        this.left = left;
+        this.right = right;
+        this.id = this.ctx.nextId();
+    }
+
+    public HuffNode(Object value, int weight) {
+        this(new NodeContext(), value, weight);
+    }
+
+    public HuffNode(NodeContext ctx, Object value, int weight) {
+        this.ctx = ctx;
+        this.value = value;
+        this.weight = weight;
+        this.id = this.ctx.nextId();
+    }
+    
+    public NodeContext getContext() {
+        return this.ctx;
+    }
+
+    public long getId() {
+        return this.id;
+    }
+
+    public Object getObject() {
+        return this.value;
+    }
+
+    public int getWeight() {
+        return this.weight;
+    }
+
+    public HuffNode getLeft() {
+        return this.left;
+    }
+
+    public HuffNode getRight() {
+        return this.right;
+    }
+
+    public String toString() {
+        return "ID: " + id +
+            ", Value " + value +
+            ", Weight: " + weight +
+            ", Left: " + left +
+            ", Right: " + right;
+    }
+}
+

src/main/java/com/hashbangbash/trie/NodeContext.java

@@ -0,0 +1,25 @@
+package com.hashbangbash.trie;
+
+/*
+ * for nodes like the HuffNode, that need
+ * an external incrementor to the node id
+ */
+public class NodeContext {
+    private long huffNodeId = 0;
+    
+    public NodeContext() {
+    }
+
+    public NodeContext(long startId) {
+        this.huffNodeId = startId;
+    }
+
+    public long getId() {
+        return this.huffNodeId;
+    }
+
+    public long nextId() {
+        return this.huffNodeId++;
+    }
+}
+