Database::PrimaryIterator< T > Class Template Reference

#include <generaldata.h>

Collaboration diagram for Database::PrimaryIterator< T >:


Public Member Functions
	PrimaryIterator (TrapperDoc doc, string generalDataType, DbTxn txnid=NULL)
	~PrimaryIterator ()
int	first ()
int	next ()
int	get (u_int32_t flags, Dbt &primary_key)
T *	key ()
T *	answer ()
int	delCurrent ()
int	setFromRecno (db_recno_t recno)
Protected Member Functions
void	fillSecondaryDataDbt (Dbt &secondaryKey, const Dbt &primaryData)
Protected Attributes
T *	m_GeneralData_key
T *	m_GeneralData_answer
Dbc *	m_cursor
Db *	m_db
std::string	name

Detailed Description

template<class T>
class Database::PrimaryIterator< T >

Definition at line 482 of file generaldata.h.

Constructor & Destructor Documentation

template<class T>

Database::PrimaryIterator< T >::PrimaryIterator	(	TrapperDoc *	doc,
		string	generalDataType,
		DbTxn *	txnid = `NULL`
	)

Definition at line 507 of file generaldata.h.

References TrapperDoc::findTrDb(), Database::PrimaryIterator< T >::m_cursor, Database::PrimaryIterator< T >::m_db, Database::PrimaryIterator< T >::m_GeneralData_answer, Database::PrimaryIterator< T >::m_GeneralData_key, GeneralMaker::newData(), and TrDb::primaryDb().

00508   {
00509     m_GeneralData_key = dynamic_cast< T * >(GeneralMaker::newData( generalDataType ));
00510     m_GeneralData_answer = dynamic_cast< T * >(GeneralMaker::newData( generalDataType ));
00511     m_db = doc->findTrDb( generalDataType )->primaryDb();
00512     Q_CHECK_PTR(m_GeneralData_key);
00513     Q_CHECK_PTR(m_GeneralData_answer);
00514     m_db->cursor( txnid , &m_cursor, 0 );
00515   }

template<class T>

Database::PrimaryIterator< T >::~PrimaryIterator ( )

Definition at line 518 of file generaldata.h.

References Database::PrimaryIterator< T >::m_cursor, Database::PrimaryIterator< T >::m_GeneralData_answer, and Database::PrimaryIterator< T >::m_GeneralData_key.

00519   {
00520     m_cursor->close();
00521     if ( m_GeneralData_key )
00522       {
00523         delete m_GeneralData_key;
00524         m_GeneralData_key = NULL;
00525       }
00526     if ( m_GeneralData_answer )
00527       {
00528         delete m_GeneralData_answer;
00529         m_GeneralData_answer = NULL;
00530       }
00531   }

Member Function Documentation

template<class T>

int Database::PrimaryIterator< T >::first ( )

Definition at line 545 of file generaldata.h.

References Database::PrimaryIterator< T >::get(), and Database::PrimaryIterator< T >::key().

Referenced by TrapperDoc::saveExport(), and TrapperView::selectAll().

00546   {
00547     Dbt key;
00548     return get( DB_FIRST, key );
00549   }

template<class T>

int Database::PrimaryIterator< T >::next ( )

Definition at line 584 of file generaldata.h.

References Database::PrimaryIterator< T >::get(), and Database::PrimaryIterator< T >::key().

Referenced by TrapperDoc::saveExport(), and TrapperView::selectAll().

00585   {
00586     Dbt key;
00587     return get( DB_NEXT, key );
00588   }

template<class T>

int Database::PrimaryIterator< T >::get	(	u_int32_t	flags,
		Dbt &	primary_key
	)

Definition at line 552 of file generaldata.h.

References Database::PrimaryIterator< T >::m_cursor, Database::PrimaryIterator< T >::m_db, Database::PrimaryIterator< T >::m_GeneralData_answer, and Database::setFromDbt().

Referenced by Database::PrimaryIterator< T >::first(), Database::PrimaryIterator< T >::next(), and Database::PrimaryIterator< T >::setFromRecno().

00553   {
00554     Dbt primary_data;
00555     int ret;
00556     if ((ret = m_cursor->get
00557          (&primary_key, &primary_data, flags )) != 0)
00558       {
00559         if ( ret != DB_NOTFOUND )
00560           {
00561             m_db->err(ret, "get call in PrimaryIterator::get");
00562           }
00563         //  throw DbException(ret);
00564       }
00565     else
00566       {
00567         setFromDbt( &primary_data, m_GeneralData_answer );
00568         db_recno_t recno = * static_cast<db_recno_t *> ( primary_key.get_data() );
00569         m_GeneralData_answer->setRecno( recno );
00570       }
00571     return ret;
00572   }

template<class T>

T* Database::PrimaryIterator< T >::key ( ) [inline]

Definition at line 490 of file generaldata.h.

References Database::PrimaryIterator< T >::m_GeneralData_key.

Referenced by Database::PrimaryIterator< T >::first(), Database::PrimaryIterator< T >::next(), and Database::PrimaryIterator< T >::setFromRecno().

00490 { return m_GeneralData_key; }

template<class T>

T* Database::PrimaryIterator< T >::answer ( ) [inline]

Definition at line 491 of file generaldata.h.

References Database::PrimaryIterator< T >::m_GeneralData_answer.

Referenced by MAl_Readonly::read_seq_from_db(), TrapperDoc::saveExport(), TrapperView::selectAll(), and TrapperView::writeSelected().

00491 { return m_GeneralData_answer; }

template<class T>

int Database::PrimaryIterator< T >::delCurrent ( )

Definition at line 534 of file generaldata.h.

References Database::PrimaryIterator< T >::m_cursor, and Database::PrimaryIterator< T >::m_db.

00535   {
00536     int ret;
00537     if ((ret = m_cursor->del(0)) != 0)
00538       {
00539         m_db->err(ret, "get call in PrimaryIterator::get");
00540       }
00541     return ret;    
00542   }

template<class T>

int Database::PrimaryIterator< T >::setFromRecno ( db_recno_t recno )

Definition at line 575 of file generaldata.h.

References Database::PrimaryIterator< T >::get(), and Database::PrimaryIterator< T >::key().

Referenced by MAl_Readonly::read_seq_from_db(), and TrapperView::writeSelected().

00576   {
00577     Dbt key;
00578     key.set_size( sizeof( db_recno_t ));
00579     key.set_data( &recno );
00580     return get( DB_SET, key);
00581   }