DUNE::Database::Connection Class Reference

Detailed Description

Database connection.

Public Types
enum	ConnectionFlags { CF_RDONLY, CF_CREATE }

Public Member Functions
	Connection (int flags)
	Connection (const char *path, int flags)
	~Connection (void)
void	execute (const char *sql_stmt, int *count=0)
void	beginTransaction (void)
void	commit (void)
void	rollback (void)
const char *	lastError (void)
DB_HANDLE *	handle (void)

Member Enumeration Documentation

enum DUNE::Database::Connection::ConnectionFlags

Connection flags.

Enumerator
CF_RDONLY	Open read-only connection.
CF_CREATE	Create database if it does not exist.

Constructor & Destructor Documentation

DUNE::Database::Connection::Connection

(

int

flags

)

Constructs a memory-only database.

Parameters

flags

connection flags (

See Also

ConnectionFlags)

DUNE::Database::Connection::Connection	(	const char *	path,
		int	flags
	)

Constructs a file-based database.

Parameters

path	database file
flags	connection flags (

See Also

ConnectionFlags)

DUNE::Database::Connection::~Connection

(

void

)

Destructor.

Member Function Documentation

void DUNE::Database::Connection::beginTransaction

(

void

)

Begin transaction.

References DUNE::Database::Statement::execute().

void DUNE::Database::Connection::commit

(

void

)

Commit (end) current transaction.

References DUNE::Database::Statement::execute().

void DUNE::Database::Connection::execute	(	const char *	sql_stmt,
		int *	count = 0
	)

Execute an SQL statement directly and optionally obtain the number of affected rows for (INSERT, UPDATE, and DELETE statements).

Parameters

sql_stmt	SQL statement
count	optional argument to get number of affected rows

DB_HANDLE* DUNE::Database::Connection::handle ( void  )

inline

Get internal database connection handle.

This is for use by other classes in the package.

Referenced by DUNE::Database::Statement::execute(), and DUNE::Database::Statement::Statement().

const char * DUNE::Database::Connection::lastError

(

void

)

Get description of last error.

Returns

description of last database error.

void DUNE::Database::Connection::rollback

(

void

)

Rollback current transaction.

References DUNE::Database::Statement::execute().

Collaboration diagram for DUNE::Database::Connection: