ibis::colBlobs Class Reference

A class to store raw binary values. More...

#include <colValues.h>

Inheritance diagram for ibis::colBlobs:

Public Member Functions
virtual void	bottomk (uint32_t k, array_t< uint32_t > &ind) const
	Find positions of the k smallest strings.
	colBlobs (const ibis::column *c, const ibis::bitvector &hits)
	colBlobs (const ibis::column *c)
	Construct ibis::colBlobs from an existing list of values.
	colBlobs (size_t n, const ibis::opaque &v)
virtual uint32_t	elementSize () const
virtual bool	empty () const
virtual void	erase (uint32_t i, uint32_t j)
virtual void *	getArray () const
	Return the pointer to the pointer to underlying array_t<T> object.
virtual double	getDouble (uint32_t) const
	Return the ith value as double. NOT implemented.
virtual float	getFloat (uint32_t) const
	Return the ith value as float. NOT implemented.
virtual int32_t	getInt (uint32_t) const
	Return the ith value as int. NOT implemented.
virtual int64_t	getLong (uint32_t) const
	Return the ith value as long. NOT implemented.
virtual double	getMax () const
	Compute the maximum. NOT implemented.
virtual double	getMin () const
	Compute the minimum. NOT implemented.
virtual double	getSum () const
	Compute the sum. NOT implemented.
virtual ibis::TYPE_T	getType () const
	Return the type of the data stored.
virtual uint32_t	getUInt (uint32_t) const
	Return the ith value as unsigned int. NOT implemented.
virtual uint64_t	getULong (uint32_t) const
	Return the ith value as unsigned long. NOT implemented.
virtual void	nosharing ()
	Make sure the content of the underlying storage is not shared.
virtual void	reduce (const array_t< uint32_t > &)
	remove the duplicate elements according to the array starts
virtual void	reduce (const array_t< uint32_t > &, ibis::selectClause::AGREGADO)
virtual void	reorder (const array_t< uint32_t > &ind)
	Reorder the values according to the specified indices. More...
virtual array_t< uint32_t > *	segment (const array_t< uint32_t > *) const
	Produce an array of the starting positions of values that are the same. More...
virtual uint32_t	size () const
virtual void	sort (uint32_t, uint32_t, bundle *)
	Sort rows in the range [i, j).
virtual void	sort (uint32_t, uint32_t, bundle *, colList::iterator, colList::iterator)
	Sort rows in the range [i, j). More...
virtual void	sort (uint32_t, uint32_t, array_t< uint32_t > &) const
	Sort rows in the range [i, j). More...
virtual void	swap (uint32_t i, uint32_t j)
void	swap (colBlobs &rhs)
virtual void	topk (uint32_t k, array_t< uint32_t > &ind) const
	Return the positions of the k largest elements.
virtual long	truncate (uint32_t keep)
	Truncate the number element to no more than keep.
virtual long	truncate (uint32_t keep, uint32_t start)
	Truncate the number element to no more than keep.
virtual long	write (FILE *fptr) const
	Write out whole array as binary. More...
virtual void	write (std::ostream &out, uint32_t i) const
	Write ith element as text. More...
Public Member Functions inherited from ibis::colValues
bool	canSort () const
const ibis::column *	columnPointer () const
const char *	name () const
	Name.
const ibis::column *	operator-> () const
	Provide a pointer to the column containing the selected values.
void	setTimeFormat (const char *, const char *=0)
	Add a custom format for the column to be interpretted as unix time stamps.
void	swap (colValues &rhs)

Additional Inherited Members
Static Public Member Functions inherited from ibis::colValues
static colValues *	create (const ibis::column *c)
	Implementation of the colValues class hierarchy. More...
static colValues *	create (const ibis::column *c, const ibis::bitvector &hits)
	Construct from a hit vector.
static colValues *	create (const ibis::column *c, ibis::fileManager::storage *store, const uint32_t start, const uint32_t end)
	Construct from content of the file (pointed by store). More...
Protected Member Functions inherited from ibis::colValues
	colValues (const ibis::column *c)
Protected Attributes inherited from ibis::colValues
const ibis::column *	col
ibis::column::unixTimeScribe *	utform
	!< The column where the value is from.

Detailed Description

A class to store raw binary values.

It does not support sorting or any arithematic operations.

Member Function Documentation

void ibis::colBlobs::reorder ( const array_t< uint32_t > &  ind )

virtual

Reorder the values according to the specified indices.

New[i] = Old[ind[i]].

Implements ibis::colValues.

References ibis::array_t< T >::size().

ibis::array_t< uint32_t > * ibis::colBlobs::segment ( const array_t< uint32_t > *  old ) const

virtual

Produce an array of the starting positions of values that are the same.

Implements ibis::colValues.

void ibis::colBlobs::sort ( uint32_t  i, uint32_t  j, bundle *  bdl, colList::iterator  head, colList::iterator  tail  )

virtual

Sort rows in the range [i, j).

Also sort the columns between [head, tail).

Implements ibis::colValues.

void ibis::colBlobs::sort ( uint32_t  i, uint32_t  j, array_t< uint32_t > &  neworder  ) const

virtual

Sort rows in the range [i, j).

Output the new order in array neworder.

Implements ibis::colValues.

long ibis::colBlobs::write ( FILE *  fptr ) const

virtual

Write out whole array as binary.

Each raw binary object is preceded by an 8-byte counter and followed padding to ensure the next entry starts at 8-byte boundary.

Implements ibis::colValues.

void ibis::colBlobs::write ( std::ostream &  out, uint32_t  i  ) const

virtual

Write ith element as text.

This is a truncated form that can not be used to recreate the binary object!

Implements ibis::colValues.

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

• colValues.h
• colValues.cpp