qdbm::ADBM Class Reference

Aabstraction for database managers compatible with DBM. More...

Inheritance diagram for qdbm::ADBM:

List of all members.

Public Member Functions
virtual	~ADBM ()
	Release resources of the instance.
virtual void	close ()=0 throw (DBM_error)
	Close the database connection.
virtual void	storerec (const Datum &key, const Datum &val, bool replace=true)=0 throw (DBM_error)
	Store a record.
virtual void	deleterec (const Datum &key)=0 throw (DBM_error)
	Delete a record.
virtual Datum	fetchrec (const Datum &key)=0 throw (DBM_error)
	Fetch a record.
virtual Datum	firstkey ()=0 throw (DBM_error)
	Get the first key.
virtual Datum	nextkey ()=0 throw (DBM_error)
	Get the next key.
virtual bool	error ()=0 throw (DBM_error)
	Check whether a fatal error occured or not.

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Detailed Description

Aabstraction for database managers compatible with DBM.

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Member Function Documentation

virtual void qdbm::ADBM::close

(

)

throw (DBM_error) [pure virtual]

Close the database connection.

Exceptions:

DBM_error

if an error occurs.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual void qdbm::ADBM::deleterec

(

const Datum &

key

)

throw (DBM_error) [pure virtual]

Delete a record.

Parameters:

key

reference to a key object.

Exceptions:

DBM_error

if an error occurs or no record corresponds.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual bool qdbm::ADBM::error

(

)

throw (DBM_error) [pure virtual]

Check whether a fatal error occured or not.

Returns:

true if the database has a fatal error, false if not.

Exceptions:

DBM_error

if an error occurs.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual Datum qdbm::ADBM::fetchrec

(

const Datum &

key

)

throw (DBM_error) [pure virtual]

Fetch a record.

Parameters:

key

reference to a key object.

Returns:

a temporary instance of the value of the corresponding record.

Exceptions:

DBM_error

if an error occurs or no record corresponds.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual Datum qdbm::ADBM::firstkey

(

)

throw (DBM_error) [pure virtual]

Get the first key.

Returns:

a temporary instance of the key of the first record.

Exceptions:

DBM_error

if an error occurs or no record corresponds.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual Datum qdbm::ADBM::nextkey

(

)

throw (DBM_error) [pure virtual]

Get the next key.

Returns:

a temporary instance of the key of the next record.

Exceptions:

DBM_error

if an error occurs or no record corresponds.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

virtual void qdbm::ADBM::storerec	(	const Datum &	key,
		const Datum &	val,
		bool	replace = true
	)			throw (DBM_error) [pure virtual]

Store a record.

Parameters:

	key	reference to a key object.
	val	reference to a value object.
	replace	whether the existing value is to be overwritten or not.

Exceptions:

DBM_error

if an error occurs or replace is cancelled.

Implemented in qdbm::Curia, qdbm::Depot, and qdbm::Villa.

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

• xadbm.h