WIP: remove the old database abstraction layer

remove such classes:
- DbBase
- DbConn
- DbTextStream
- Db

while here:
- remove: TextStream, SLog, TexTextStream

winixd/plugins/thread/tdb.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2010-2021, Tomasz Sowa
+ * Copyright (c) 2010-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -36,49 +36,36 @@
 #define headerfile_winix_plugins_thread_tdb
 
 #include <vector>
+#include "core/winixmodeldeprecated.h"
 #include "thread.h"
-#include "db/dbbase.h"
+#include "threadfiles.h"
 #include "core/error.h"
 
-namespace Winix
+
+namespace Winix::Thread
 {
 
 
-namespace Thread
-{
-
-
-class TDb : public DbBase
+class TDb : public WinixModelDeprecated
 {
 public:
 
-	/*
-		high level interface
-	*/
+	void GetAnswers(long file_id, std::vector<ThreadFiles> & answer_id_tab);
+	bool AddAnswer(long file_id, long answer_id);
 
-	//Error AddThread(const Thread & thread);
-	//Error GetThread(long file_id, Thread & thread);
-	//Error GetThreads(const std::vector<long> & file_id_tab, std::vector<Thread> & thread_tab);
-	Error RemoveThread(long file_id);
-
-	Error AddAnswer(long file_id, long answer_id);
-	Error GetAnswers(long file_id, std::vector<long> & answer_id_tab);
-	Error RemoveAnswer(long answer_id);
-
-
-	/*
-		low level interface
-	*/
+	bool RemoveAnswer(long answer_id);
+	bool RemoveThread(long file_id);
 
 	// looking for the last answer in a thread (in 'thread_files' table)
 	// this is not the value from 'thread' table
 	long FindLastAnswer(long file_id);
 
-	// returning all threads id (file_id) (from 'thread' table)
-	void GetAllThreadsId(std::vector<long> & file_id);
+	// returning all threads
+	// IMPROVEME need to be refactored
+	void GetAllThreads(std::vector<Thread> & threads);
 
 	// removing only the answer in 'thread_files' table without updating 'thread' table
-	Error RemoveAnswerOnly(long answer_id);
+	bool RemoveAnswerOnly(long answer_id);
 
 	// returning how many answers there are
 	// calculating from 'thread_files' table
@@ -91,25 +78,20 @@ public:
 
 private:
 
-	DbTextStream query;
 	std::wstring list_id;
-	int cfile_id, creplies, cclosed;
-	//int clast_item, cdate_modification, cuser_id, cguest;
 	Thread thread_temp;
 	std::vector<long> file_id_tab;
 
-	void  SetThreadColumns(PGresult * r);
-	void  SetThread(PGresult * r, int col, Thread & thread);
-	Error RemoveAnswerRecalcLast(long file_id);
-	Error RemoveAnswerRecalcLast(const std::vector<long> & file_id_tab);
+	bool do_query(pt::TextStream & query);
+
+	bool RemoveAnswerRecalcLast(long file_id);
+	bool RemoveAnswerRecalcLast(const std::vector<long> & file_id_tab);
 
 };
 
 
 
-} // namespace
-
-} // namespace Winix
+}
 
 #endif