IHistogram Class Reference

Class for representing a histogram. More...

#include "IHistogram.hpp"

Inheritance diagram for IHistogram:

Classes
struct	IEntry
	Histogram entry. More...

Public Types
typedef ConstIterator< IEntry< int64_t > >	const_iterator_integral
	integral histogram iterator
typedef ConstIterator< IEntry< double > >	const_iterator_real
	real histogram iterator
typedef ConstIterator< IEntry< bool > >	const_iterator_bool
	boolean histogram iterator
typedef ConstIterator< IEntry< const char * > >	const_iterator_string
	string histogram iterator

Public Member Functions
virtual ColumnType	type () const =0
	internal type of the histogram
virtual bool	isIntegral () const =0
	is an integral data type
virtual bool	isReal () const =0
	is a real (double or float) data type
virtual bool	isBool () const =0
	is a boolean type
virtual bool	isString () const =0
	is a string data type
virtual int64_t	size () const =0
	number of histogram value (number of distinct data values)
virtual int64_t	sizeData () const =0
	number of data values that were used to build the histogram
virtual int64_t	sizeNull () const =0
	number of null values occurred in the corresponding data set
virtual bool	complete () const =0
	flag if histogram covers the full data set
virtual TextHandle	toString (int precision=3) const =0
virtual void	fromString (const char *)=0
virtual void	merge (const IHistogram &other)=0
virtual const_iterator_integral	beginIntegral () const =0
	only allowed if isIntegral() == true
virtual const_iterator_integral	endIntegral () const =0
virtual const_iterator_real	beginReal () const =0
virtual const_iterator_real	endReal () const =0
virtual const_iterator_bool	beginBool () const =0
virtual const_iterator_bool	endBool () const =0
virtual const_iterator_string	beginString () const =0
virtual const_iterator_string	endString () const =0
Public Member Functions inherited from ObjectBase
virtual void	Delete ()

Static Public Member Functions
static IHistogram *	New (const char *)

Detailed Description

Class for representing a histogram.

Although all DM column types are internally supported, the interface provides access to a reduced list types only (to keep the interface as simple as possible). The corresponding conversion are implicitly performed when accessing the values.