Support Database Custom Data Merging (#3002)

* Introduce _LAST_MODIFIED custom data entry that stores the last modified datetime of the database's custom data entries
* Merge custom data from source database to target
* Modify tests to be aware of _LAST_MODIFIED entry

1 files changed, 7 insertions, 0 deletions

diff --git a/src/core/CustomData.h b/src/core/CustomData.h
index d085c9409..126d4d84e 100644
--- a/src/core/CustomData.h
+++ b/src/core/CustomData.h
@@ -42,9 +42,12 @@ public:
     int size() const;
     int dataSize() const;
     void copyDataFrom(const CustomData* other);
+    QDateTime getLastModified() const;
     bool operator==(const CustomData& other) const;
     bool operator!=(const CustomData& other) const;
 
+    static const QString LastModified;
+
 signals:
     void customDataModified();
     void aboutToBeAdded(const QString& key);
@@ -55,6 +58,10 @@ signals:
     void renamed(const QString& oldKey, const QString& newKey);
     void aboutToBeReset();
     void reset();
+    void lastModified();
+
+private slots:
+    void updateLastModified();
 
 private:
     QHash<QString, QString> m_data;