#include <db_helper.hpp>

Collaboration diagram for QNLP::DBHelper:

Public Member Functions
	DBHelper ()

	DBHelper (const std::string filename)

	~DBHelper ()

int	openDB (const std::string filename)
	Opens the requested database, and gives the return code of the operation. If the DB pointer has already been associated with data, then the return code is 0, and no operation is performed. More...

void	closeDB ()
	Closes the database if the DB pointer is open. More...

sqlite3 *	getDBRef ()
	Returns a pointer to the DB object. More...

std::string	getFilename ()
	Get the name of the opened database. More...

Private Attributes
sqlite3 *	db_ptr

std::string	db_filename

Detailed Description

Definition at line 35 of file db_helper.hpp.

Constructor & Destructor Documentation

◆ DBHelper() [1/2]

DBHelper::DBHelper ( )

Definition at line 13 of file db_helper.cpp.

13 : db_ptr(nullptr){};

QNLP::DBHelper::db_ptr

sqlite3 * db_ptr

Definition: db_helper.hpp:71

◆ DBHelper() [2/2]

DBHelper::DBHelper ( const std::string filename )

Definition at line 15 of file db_helper.cpp.

                                            : db_ptr(nullptr), db_filename(filename){
     SQL_RETURN_CHECK ( DBHelper::openDB(filename), SQLITE_OK );
 }

References openDB(), and SQL_RETURN_CHECK.

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◆ ~DBHelper()

DBHelper::~DBHelper ( )

Definition at line 19 of file db_helper.cpp.

                    {
     DBHelper::closeDB();
 }

References closeDB().

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Member Function Documentation

◆ closeDB()

void DBHelper::closeDB ( )

Closes the database if the DB pointer is open.

Definition at line 23 of file db_helper.cpp.

                       {
     if(this->db_ptr != nullptr ){
     //    std::cout << "CLOSING " << db_filename << std::endl;
         SQL_RETURN_CHECK ( sqlite3_close(this->db_ptr), SQLITE_OK );
     }
     db_filename.clear();
     db_ptr = nullptr;
 }

References db_filename, db_ptr, and SQL_RETURN_CHECK.

Referenced by openDB(), TEST_CASE(), and ~DBHelper().

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◆ getDBRef()

sqlite3 * DBHelper::getDBRef ( )

Returns a pointer to the DB object.

Returns: sqlite3*

Definition at line 47 of file db_helper.cpp.

                            {
     return this->db_ptr;
 }

References db_ptr.

Referenced by TEST_CASE().

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◆ getFilename()

std::string DBHelper::getFilename ( )

Get the name of the opened database.

Returns: std::string

Definition at line 51 of file db_helper.cpp.

                                {
     return this->db_filename;
 }

References db_filename.

Referenced by TEST_CASE().

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◆ openDB()

int DBHelper::openDB ( const std::string filename )

Opens the requested database, and gives the return code of the operation. If the DB pointer has already been associated with data, then the return code is 0, and no operation is performed.

Parameters

string Path to database on filesystem.

Returns: int Return code of the DB access.

Definition at line 32 of file db_helper.cpp.

                                       {
     if(this->db_ptr == nullptr){
         this->db_filename = filename;
     //    std::cout << "OPENING " << filename << std::endl;
         int rc = sqlite3_open_v2( (const char *) filename.c_str(), &this->db_ptr, SQLITE_OPEN_READWRITE, NULL);
         if (rc != SQLITE_OK){
             DBHelper::closeDB();
         }
         return rc;
 
     } else {
         return 0;
     }
 }