hds::db::Locker Class Reference

#include <locker.hpp>

Inheritance diagram for hds::db::Locker:

Public Member Functions
	Locker ()
virtual	~Locker ()
virtual DbIndex	lock (const LockDescription &ld)=0
virtual void	release (const DbIndex &id)=0
virtual size_t	releaseAll ()=0
virtual void	list (LockDescriptionVec &locks)=0
virtual ErrCode	lastError () const =0

Detailed Description

Qt SQL database locker.

Constructor & Destructor Documentation

hds::db::Locker::Locker

(

)

Default constructor.

virtual hds::db::Locker::~Locker ( )

virtual

Destroy object.

Member Function Documentation

virtual ErrCode hds::db::Locker::lastError ( ) const

pure virtual

Get the last error occurred.

Implemented in hds::db::LockerQSql.

virtual void hds::db::Locker::list ( LockDescriptionVec &  locks )

pure virtual

Get list of database locks. lastError() should return: 

EC_UNDEFINED on internal error, EC_NO_ERROR on success.

Parameters

locks

Resulted list of locks.

Implemented in hds::db::LockerQSql.

virtual DbIndex hds::db::Locker::lock ( const LockDescription &  ld )

pure virtual

Try to obtain a lock with provided description. lastError() should return: 

EC_LOCKED_READ if can't obtain lock because provided name locked for reading, EC_LOCKED_WRITE if can't obtain lock because provided name locked for writing, EC_UNDEFINED on internal error, EC_NO_ERROR if lock is obtained successfully.

Parameters

lock_descr

Description of the lock.

Returns

Uniq index of lock obtained on success. Has no means on error.

Implemented in hds::db::LockerQSql.

virtual void hds::db::Locker::release ( const DbIndex &  id )

pure virtual

Tries to release lock with provided id. lastError() should return: 

EC_UNDEFINED on internal error, EC_NO_ERROR on success.

Parameters

id	Uniq index of lock to be released.

Implemented in hds::db::LockerQSql.

virtual size_t hds::db::Locker::releaseAll ( )

pure virtual

Tries to release all locks. lastError() may return: 

EC_UNDEFINED on internal error, EC_NO_ERROR on success.

Returns

number of locks released.

Implemented in hds::db::LockerQSql.

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

• /net/opt/univers/ubp-i-15.3-centos7-x64.urij/include/hds_db/base/locker.hpp