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Introduce synchronize merge method

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* Create history-based merging that keeps older data in history instead of discarding or deleting it
* Extract merge logic into the Merger class
* Allows special merge behavior
* Improve handling of deletion and changes on groups
* Enable basic change tracking while merging
* Prevent unintended timestamp changes while merging
* Handle differences in timestamp precision
* Introduce comparison operators to allow for more sophisticated comparisons (ignore special properties, ...)
* Introduce Clock class to handle datetime across the app

Merge Strategies:
* Default (use inherited/fallback method)
* Duplicate (duplicate conflicting nodes, apply all deletions)
* KeepLocal (use local values, but apply all deletions)
* KeepRemote (use remote values, but apply all deletions)
* KeepNewer (merge history only)
* Synchronize (merge history, newest value stays on top, apply all deletions)
This commit is contained in:
Jonathan White
2018-09-30 08:45:06 -04:00
committed by Jonathan White
parent b40e5686dc
commit c1e9f45df9
43 changed files with 2777 additions and 585 deletions
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10
src/core/Database.h
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@@ -37,6 +37,10 @@ struct DeletedObject
{
QUuid uuid;
QDateTime deletionTime;
bool operator==(const DeletedObject& other) const
{
return uuid == other.uuid && deletionTime == other.deletionTime;
}
};
Q_DECLARE_TYPEINFO(DeletedObject, Q_MOVABLE_TYPE);
@@ -88,8 +92,12 @@ public:
Entry* resolveEntry(const QString& text, EntryReferenceType referenceType);
Group* resolveGroup(const QUuid& uuid);
QList<DeletedObject> deletedObjects();
const QList<DeletedObject>& deletedObjects() const;
void addDeletedObject(const DeletedObject& delObj);
void addDeletedObject(const QUuid& uuid);
bool containsDeletedObject(const QUuid& uuid) const;
bool containsDeletedObject(const DeletedObject& uuid) const;
void setDeletedObjects(const QList<DeletedObject>& delObjs);
const QUuid& cipher() const;
Database::CompressionAlgorithm compressionAlgo() const;
@@ -112,7 +120,7 @@ public:
void recycleGroup(Group* group);
void emptyRecycleBin();
void setEmitModified(bool value);
void merge(const Database* other);
void markAsModified();
QString saveToFile(QString filePath, bool atomic = true, bool backup = false);
/**