New Key API in storage layer

Summary:
- Use object oriented paradigm for Keys / Identifiers /Revisions
- "Compress" keys by using byte representation of Uuids
- Still some cleaning left to do
- Also run some benchmarks
- I'm questioning whether files other than entitystore (tests excluded) are allowed to access this API

Reviewers: cmollekopf

Reviewed By: cmollekopf

Tags: #sink

Differential Revision: https://phabricator.kde.org/D13735

1 files changed, 12 insertions, 1 deletions

diff --git a/common/utils.h b/common/utils.h
index 253de61..7066d79 100644
--- a/common/utils.h
+++ b/common/utils.h
@@ -20,6 +20,17 @@
 
 #include <QByteArray>
 
+#include <cmath>
+
 namespace Sink {
-    QByteArray createUuid();
+
+QByteArray createUuid();
+
+template <typename T>
+static QByteArray padNumber(T number)
+{
+    static T uint_num_digits = (T)std::log10(std::numeric_limits<T>::max()) + 1;
+    return QByteArray::number(number).rightJustified(uint_num_digits, '0');
 }
+
+} // namespace Sink