From 040473f9860065b30a120f417662af9e8a2fdd1d Mon Sep 17 00:00:00 2001
From: Eric Lippmann <eric.lippmann@netways.de>
Date: Wed, 28 May 2014 17:13:42 +0200
Subject: [PATCH] lib: Add NodeInterface

---
 library/Icinga/Data/Tree/NodeInterface.php | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 library/Icinga/Data/Tree/NodeInterface.php

diff --git a/library/Icinga/Data/Tree/NodeInterface.php b/library/Icinga/Data/Tree/NodeInterface.php
new file mode 100644
index 000000000..8ecca86c6
--- /dev/null
+++ b/library/Icinga/Data/Tree/NodeInterface.php
@@ -0,0 +1,38 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Data\Tree;
+
+interface NodeInterface
+{
+    /**
+     * Append a child to the node
+     *
+     * @param   mixed $value
+     *
+     * @return  self
+     */
+    public function appendChild($value);
+
+    /**
+     * Get the node's value
+     *
+     * @return mixed
+     */
+    public function getValue();
+
+    /**
+     * Whether the node has children
+     *
+     * @return bool
+     */
+    public function hasChildren();
+
+    /**
+     * Get the node's children
+     *
+     * @return array
+     */
+    public function getChildren();
+}