Implemented base functionality for commodity grid on shop form.

commodity/commodityservice.cpp

@@ -0,0 +1,19 @@
+#include "commodityservice.h"
+
+#include "commodity-odb.hxx"
+
+CommodityService::CommodityService()
+{
+
+}
+
+QList<QSharedPointer<ShopItem> > CommodityService::shopItems()
+{
+    QList<QSharedPointer<ShopItem> > ret;
+
+    foreach (QSharedPointer<CommodityData> data, all()) {
+        ret.append(qSharedPointerDynamicCast<ShopItem, CommodityData>(data));
+    }
+
+    return ret;
+}