data: reducing database size by discarding indices

* added storage modes to facilitate adding and removing sqlite indices as needed.

src/lib/data/parser/TaskParseWrapper.cpp

@@ -1,15 +1,18 @@
 #include "data/parser/TaskParseWrapper.h"
 
 #include "component/view/DialogView.h"
+#include "data/PersistentStorage.h"
 #include "utility/file/FileRegister.h"
 #include "utility/scheduling/Blackboard.h"
 #include "utility/utility.h"
 
 TaskParseWrapper::TaskParseWrapper(
+	PersistentStorage* storage,
 	std::shared_ptr<FileRegister> fileRegister,
 	DialogView* dialogView
 )
-	: m_fileRegister(fileRegister)
+	: m_storage(storage)
+	, m_fileRegister(fileRegister)
 	, m_dialogView(dialogView)
 {
 }
@@ -29,9 +32,16 @@ void TaskParseWrapper::setTask(std::shared_ptr<Task> task)
 void TaskParseWrapper::doEnter(std::shared_ptr<Blackboard> blackboard)
 {
 	blackboard->set("indexer_count", 0);
-	m_dialogView->updateIndexingDialog(0, m_fileRegister->getSourceFilesCount(), "");
+
+	const size_t sourceFileCount = m_fileRegister->getSourceFilesCount();
+	m_dialogView->updateIndexingDialog(0, sourceFileCount, "");
 
 	m_start = utility::durationStart();
+
+	if (sourceFileCount > 0)
+	{
+		m_storage->setMode(SqliteStorage::STORAGE_MODE_WRITE);
+	}
 }
 
 Task::TaskState TaskParseWrapper::doUpdate(std::shared_ptr<Blackboard> blackboard)

src/lib/data/parser/TaskParseWrapper.h

@@ -12,12 +12,14 @@
 
 class DialogView;
 class FileRegister;
+class PersistentStorage;
 
 class TaskParseWrapper
 	: public TaskDecorator
 {
 public:
 	TaskParseWrapper(
+		PersistentStorage* storage,
 		std::shared_ptr<FileRegister> fileRegister,
 		DialogView* dialogView
 	);
@@ -31,6 +33,7 @@ private:
 	virtual void doExit(std::shared_ptr<Blackboard> blackboard);
 	virtual void doReset(std::shared_ptr<Blackboard> blackboard);
 
+	PersistentStorage* m_storage;
 	std::shared_ptr<FileRegister> m_fileRegister;
 	DialogView* m_dialogView;