Public Member Functions
	TrHdrsCacheQSql ()

	TrHdrsCacheQSql (SeismicQSql *pseis, const size_t read_cache_size, const size_t write_cache_size)

void	init (SeismicQSql *pseis, const size_t read_cache_size, const size_t write_cache_size)

const TrHeader &	get (const DbIndex &id)

void	update (const DbIndex &id, const TrHeader &hdr)

DbIndex	append (const TrHeader &hdr)

void	clear ()

void	flush ()

ErrCode	lastError () const

Protected Member Functions
ErrCode	db_get_header (const DbIndex &trace_id, TrHeader &hdr)

ErrCode	db_update_header (const DbIndex &trace_id, const TrHeader &hdr)

ErrCode	db_append_header (const TrHeader &hdr, DbIndex &trace_id)

ErrCode	db_cache_all_headers (LRUCache< DbIndex, TrHeader > &hdrs_cache)

ErrCode	query2hdr (const QSqlQuery &query, TrHeader &hdr) const

Protected Attributes
LRUCache< DbIndex, hds::db::TrHeader >	m_cache

SeismicQSql *	mp_seis

ErrCode	m_last_error

QSqlQuery	m_get_hdr_query

QSqlQuery	m_get_all_hdrs_query

QSqlQuery	m_update_hdr_query

QSqlQuery	m_append_hdr_query

Detailed Description

Cached access to headers.

Constructor & Destructor Documentation

hds::db::TrHdrsCacheQSql::TrHdrsCacheQSql ( )

Default empty cache constructur.

hds::db::TrHdrsCacheQSql::TrHdrsCacheQSql	(	SeismicQSql *	pseis,
		const size_t	read_cache_size,
		const size_t	write_cache_size
	)

Construct cache with seismic and sizes provided.

Seismic not copied, just store a pointer.

DbIndex hds::db::TrHdrsCacheQSql::append ( const TrHeader & hdr )

Append new header. lastError() gets correpondent error code.

void hds::db::TrHdrsCacheQSql::clear ( )

Clear cache data. Can't generate any error.

ErrCode hds::db::TrHdrsCacheQSql::db_cache_all_headers ( LRUCache< DbIndex, TrHeader > & hdrs_cache )

protected

Get all headers from database and push them to cache provided.

void hds::db::TrHdrsCacheQSql::flush ( )

Flush all unsaved data into database. lastError() gets correpondent error code.

const TrHeader& hds::db::TrHdrsCacheQSql::get ( const DbIndex & id )

Get header with provided id. On error return default header

and lastError() gets correpondent error code.

void hds::db::TrHdrsCacheQSql::init	(	SeismicQSql *	pseis,
		const size_t	read_cache_size,
		const size_t	write_cache_size
	)

Initialize cache. lastError() gets correpondent error code.

ErrCode hds::db::TrHdrsCacheQSql::lastError ( ) const

inline

Get current error code.

Returns: EC_NO_ERROR if the last interaction with object is correct. Otherwise return correspondent error code.

void hds::db::TrHdrsCacheQSql::update	(	const DbIndex &	id,
		const TrHeader &	hdr
	)

Update header with provided id. lastError() gets correpondent error code.

LRUCache<DbIndex, hds::db::TrHeader> hds::db::TrHdrsCacheQSql::m_cache

protected

< Cache storage. Current seismic object.

SeismicQSql* hds::db::TrHdrsCacheQSql::mp_seis

protected

Current last error.

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

/net/opt/univers/ubp-i-15.3-centos7-x64.urij/include/hds_db/qsql/tr_hdrs_cache_qsql.hpp