2 files changed, 47 insertions, 0 deletions
diff --git a/plugins/CustomDimensions b/plugins/CustomDimensions
deleted file mode 160000
-Subproject 318661a2fb1ef3b3e5d6d999ae8b9628cb5a113
diff --git a/plugins/CustomDimensions/Dimension/Extractions.php b/plugins/CustomDimensions/Dimension/Extractions.php
new file mode 100644
index 0000000000..acc885f90d
--- /dev/null
+++ b/plugins/CustomDimensions/Dimension/Extractions.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * Matomo - free/libre analytics platform
+ *
+ * @link https://matomo.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+
+namespace Piwik\Plugins\CustomDimensions\Dimension;
+
+use Exception;
+
+class Extractions
+{
+    private $extractions = array();
+
+    public function __construct($extractions)
+    {
+        $this->extractions = $extractions;
+    }
+
+    public function check()
+    {
+        if (!is_array($this->extractions)) {
+            throw new Exception('extractions has to be an array');
+        }
+
+        foreach ($this->extractions as $extraction) {
+
+            if (!is_array($extraction)) {
+                throw new \Exception('Each extraction within extractions has to be an array');
+            }
+
+            if (count($extraction) !== 2
+                || !array_key_exists('dimension', $extraction)
+                || !array_key_exists('pattern', $extraction)) {
+
+                throw new \Exception('Each extraction within extractions must have a key "dimension" and "pattern" only');
+            }
+
+            $extraction = new Extraction($extraction['dimension'], $extraction['pattern']);
+            $extraction->check();
+        }
+    }
+
+}
+\ No newline at end of file