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+<?php
+
+// Icinga Web 2 Cube Module | (c) 2016 Icinga GmbH | GPLv2
+
+namespace Icinga\Module\Cube;
+
+/**
+ * Dimension interface
+ *
+ * All available dimensions must implement this interface
+ *
+ * @package Icinga\Module\Cube
+ */
+interface Dimension
+{
+ /**
+ * The name of this dimension
+ *
+ * @return string
+ */
+ public function getName();
+
+ /**
+ * The label of this dimension
+ *
+ * @return string
+ */
+ public function getLabel();
+
+ /**
+ * Column expression
+ *
+ * This is the expression used to fetch the related column. Usually an SQL
+ * snippet when a relational database is involved
+ *
+ * @param Cube $cube
+ *
+ * @return string
+ */
+ public function getColumnExpression(Cube $cube);
+
+ /**
+ * Add this dimension to a cube
+ *
+ * This allows your dimension to apply itself to the Cube. That way your
+ * dimension is able to join optional tables and more
+ *
+ * @param Cube $cube
+ * @return void
+ */
+ public function addToCube(Cube $cube);
+}