logic: improved performance of storing index to the database

* batch inject occurrences
* removed unnecessary destructor and keywords from storages

src/lib/data/storage/PersistentStorage.cpp

@@ -46,10 +46,6 @@ PersistentStorage::PersistentStorage(const FilePath& dbPath, const FilePath& boo
 	m_commandIndex.finishSetup();
 }
 
-PersistentStorage::~PersistentStorage()
-{
-}
-
 Id PersistentStorage::addNode(const StorageNodeData& data)
 {
 	const StorageNode storedNode = m_sqliteIndexStorage.getNodeBySerializedName(data.serializedName);
@@ -128,6 +124,11 @@ void PersistentStorage::addOccurrence(const StorageOccurrence& data)
 	m_sqliteIndexStorage.addOccurrence(data);
 }
 
+void PersistentStorage::addOccurrences(const std::vector<StorageOccurrence>& occurrences)
+{
+	m_sqliteIndexStorage.addOccurrences(occurrences);
+}
+
 void PersistentStorage::addComponentAccess(const StorageComponentAccessData& data)
 {
 	m_sqliteIndexStorage.addComponentAccess(data);