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/*
* Copyright (C) 2004, Leo Seib, Hannover
*
* Project:SQLiteDataset C++ Dynamic Library
* Module: SQLiteDataset class header file
* Author: Leo Seib E-Mail: leoseib@web.de
* Begin: 5/04/2002
*
* SPDX-License-Identifier: MIT
* See LICENSES/README.md for more information.
*/
#pragma once
#include "dataset.h"
#include <stdio.h>
#include <sqlite3.h>
namespace dbiplus
{
/***************** Class SqliteDatabase definition ******************
class 'SqliteDatabase' connects with Sqlite-server
******************************************************************/
class SqliteDatabase : public Database
{
protected:
/* connect descriptor */
sqlite3* conn;
bool _in_transaction;
int last_err;
public:
/* default constructor */
SqliteDatabase();
/* destructor */
~SqliteDatabase() override;
Dataset* CreateDataset() const override;
/* func. returns connection handle with SQLite-server */
sqlite3* getHandle() { return conn; }
/* func. returns current status about SQLite-server connection */
int status() override;
int setErr(int err_code, const char* qry) override;
/* func. returns error message if error occurs */
const char* getErrorMsg() override;
/* sets a new host name */
void setHostName(const char* newHost) override;
/* sets a database name */
void setDatabase(const char* newDb) override;
/* func. connects to database-server */
int connect(bool create) override;
/* func. disconnects from database-server */
void disconnect() override;
/* func. creates new database */
int create() override;
/* func. deletes database */
int drop() override;
/* check if database exists (ie has tables/views defined) */
bool exists() override;
/* \brief copy database */
int copy(const char* backup_name) override;
/* \brief drop all extra analytics from database */
int drop_analytics(void) override;
long nextid(const char* seq_name) override;
/* virtual methods for transaction */
void start_transaction() override;
void commit_transaction() override;
void rollback_transaction() override;
/* virtual methods for formatting */
std::string vprepare(const char* format, va_list args) override;
bool in_transaction() override { return _in_transaction; }
};
/***************** Class SqliteDataset definition *******************
class 'SqliteDataset' does a query to SQLite-server
******************************************************************/
class SqliteDataset : public Dataset
{
protected:
sqlite3* handle();
/* Makes direct queries to database */
virtual void make_query(StringList& _sql);
/* Makes direct inserts into database */
void make_insert() override;
/* Edit SQL */
void make_edit() override;
/* Delete SQL */
void make_deletion() override;
//static int sqlite_callback(void* res_ptr,int ncol, char** result, char** cols);
/* This function works only with MySQL database
Filling the fields information from select statement */
void fill_fields() override;
/* Changing field values during dataset navigation */
virtual void free_row(); // free the memory allocated for the current row
public:
/* constructor */
SqliteDataset();
explicit SqliteDataset(SqliteDatabase* newDb);
/* destructor */
~SqliteDataset() override;
/* set autorefresh boolean value (if true - refresh the data after edit()
or insert() operations default = false) */
void set_autorefresh(bool val);
/* opens a query & then sets a query results */
void open() override;
void open(const std::string& sql) override;
/* func. executes a query without results to return */
int exec() override;
int exec(const std::string& sql) override;
const void* getExecRes() override;
/* as open, but with our query exec Sql */
bool query(const std::string& query) override;
/* func. closes a query */
void close(void) override;
/* Cancel changes, made in insert or edit states of dataset */
void cancel() override;
/* last inserted id */
int64_t lastinsertid() override;
/* sequence numbers */
long nextid(const char* seq_name) override;
/* sequence numbers */
int num_rows() override;
/* interrupt any pending database operation */
void interrupt() override;
bool bof() override;
bool eof() override;
void first() override;
void last() override;
void prev() override;
void next() override;
/* Go to record No (starting with 0) */
bool seek(int pos = 0) override;
bool dropIndex(const char* table, const char* index) override;
};
} // namespace dbiplus
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