A service to manage a connection to an SQLite DB. More...

#include <SQLiteDBSvc.h>

Inheritance diagram for SQLiteDBSvc:

Collaboration diagram for SQLiteDBSvc:

Public Member Functions
	SQLiteDBSvc (const std::string &name, ISvcLocator *svcLoc)
	Constructor.
virtual StatusCode	initialize () override
	Initialize.
virtual SQLite::Statement	createStatement (std::string_view statement, std::source_location call=std::source_location::current()) override
	Compile a prepared statement attached to this database.

Private Attributes
std::unique_ptr< sqlite3, int()(sqlite3 )> m_db	ATLAS_THREAD_SAFE
Gaudi::Property< std::string >	m_databasePath

Detailed Description

A service to manage a connection to an SQLite DB.

Definition at line 21 of file SQLiteDBSvc.h.

Constructor & Destructor Documentation

◆ SQLiteDBSvc()

SQLiteDBSvc::SQLiteDBSvc	(	const std::string &	name,
		ISvcLocator *	svcLoc )

inline

Constructor.

Definition at line 24 of file SQLiteDBSvc.h.

25 : extends(name, svcLoc), m_db(nullptr, sqlite3_close_v2) {}

Member Function Documentation

◆ createStatement()

SQLite::Statement SQLiteDBSvc::createStatement	(	std::string_view	statement,
		std::source_location	call = std::source_location::current() )

overridevirtual

Compile a prepared statement attached to this database.

The service will manage the statement object and delete it in finalize. Statements are protected by a mutex and may be used from multiple threads. It's reasonable to construct all the prepared statements you might need in a service or algorithm initialize.

Parameters

[in] statement SQL statement to be compiled

Definition at line 22 of file SQLiteDBSvc.cxx.

                                                                        {
  return SQLite::Statement(m_db.get(), statement, call);
}

◆ initialize()

StatusCode SQLiteDBSvc::initialize ( )

overridevirtual

Initialize.

Definition at line 7 of file SQLiteDBSvc.cxx.

                                   {
  sqlite3* temp = nullptr;
  const int err = sqlite3_open_v2(m_databasePath.value().c_str(), &temp,
                                  SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE |
                                      SQLITE_OPEN_FULLMUTEX | SQLITE_OPEN_URI,
                                  nullptr);
  if (err != 0) {
    ATH_MSG_ERROR("Error opening SQLite DB: << " << sqlite3_errstr(err));
    return StatusCode::FAILURE;
  }
  m_db.reset(temp);
  ATH_MSG_INFO("Opened db connection to " << m_databasePath.value().c_str());
  return StatusCode::SUCCESS;
}

Member Data Documentation

◆ ATLAS_THREAD_SAFE

std::unique_ptr<sqlite3, int (*)(sqlite3*)> m_db SQLiteDBSvc::ATLAS_THREAD_SAFE

private

Definition at line 41 of file SQLiteDBSvc.h.

◆ m_databasePath

Gaudi::Property<std::string> SQLiteDBSvc::m_databasePath

private

Initial value:

{
      this, "DatabasePath", ":memory:",
      "Path to SQLite Database. The default (:memory:) creates a temporary "
      "in-memory database. Options may be set using SQLite URI filenames."}

Definition at line 42 of file SQLiteDBSvc.h.

                                         {
      this, "DatabasePath", ":memory:",
      "Path to SQLite Database. The default (:memory:) creates a temporary "
      "in-memory database. Options may be set using SQLite URI filenames."};

The documentation for this class was generated from the following files:

Public Member Functions

Private Attributes