dbTimeSeriesReverseIterator Class Template Reference

#include <timeseries.h>

List of all members.

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Detailed Description

template<class T>
class dbTimeSeriesReverseIterator< T >

Time series reverse iterator.

Public Member Functions
void	start (dbTimeSeriesProcessor< T > *processor, oid_t oid, time_t from, time_t till)
	Start iteration through elements belonging to the specified range.
bool	current (T &elem)
	Get current iterator element.
bool	next ()
	Move iterator position to next element.
void	reset ()
	Reset iterator to the initial state.
	dbTimeSeriesReverseIterator ()
	Iterator costructor.
Private Attributes
dbCursor< dbTimeSeriesBlock< T > >	blocks
int	pos
int	last
time_t	from

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Constructor & Destructor Documentation

dbTimeSeriesReverseIterator

(

)

[inline]

Iterator costructor.

If current() or next() method will always return false if them are invoked prior to start()

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Member Function Documentation

void start	(	dbTimeSeriesProcessor< T > *	processor,
		oid_t	oid,
		time_t	from,
		time_t	till
	)			[inline]

Start iteration through elements belonging to the specified range.

Parameters:

	processor	pointer to time series processor
	oid	time series identifer (OID of the object associated with this time series)
	from	inclusive low bound for element timestamp (set 0 to disable this criteria)
	till	inclusive high bound for element timestamp (set INFINITE_TIME to disable this criteria)

bool current

(

T &

elem

)

[inline]

Get current iterator element.

Returns:

true if there is current element, false otherwise

bool next

(

)

[inline]

Move iterator position to next element.

Returns:

true if next element exists, false otherwise

void reset

(

)

[inline]

Reset iterator to the initial state.

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Member Data Documentation

dbCursor< dbTimeSeriesBlock<T> > blocks [private]

int pos [private]

int last [private]

time_t from [private]