diff --git a/Core/DB/conditions/EmptyCondition.cs b/Core/DB/conditions/EmptyCondition.cs
new file mode 100644
index 0000000..dedbae2
--- /dev/null
+++ b/Core/DB/conditions/EmptyCondition.cs
@@ -0,0 +1,9 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace FLocal.Core.DB.conditions {
+	public class EmptyCondition : AbstractCondition {
+	}
+}
diff --git a/Core/DB/conditions/NotEmptyCondition.cs b/Core/DB/conditions/NotEmptyCondition.cs
new file mode 100644
index 0000000..1f0e6b1
--- /dev/null
+++ b/Core/DB/conditions/NotEmptyCondition.cs
@@ -0,0 +1,9 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace FLocal.Core.DB.conditions {
+	public abstract class NotEmptyCondition : AbstractCondition {
+	}
+}