CoGaDB::DeltaCompressedColumn< T > Class Template Reference

#include <delta_compressed_column.hpp>

Inheritance diagram for CoGaDB::DeltaCompressedColumn< T >:

Collaboration diagram for CoGaDB::DeltaCompressedColumn< T >:

List of all members.

Public Member Functions
	DeltaCompressedColumn (const std::string &name, AttributeType db_type)
	~DeltaCompressedColumn ()
bool	insert (const boost::any &new_Value)
	appends a value new_Value to end of column
bool	insert (const T &new_value)
template<typename InputIterator >
bool	insert (InputIterator first, InputIterator last)
bool	update (TID tid, const boost::any &new_value)
	updates the value on position tid with a value new_Value
bool	update (PositionListPtr tid, const boost::any &new_value)
	updates the values specified by the position list with a value new_Value
bool	remove (TID tid)
	deletes the value on position tid
bool	remove (PositionListPtr tid)
	deletes the values defined in the position list
bool	clearContent ()
	deletes all values stored in the column
const boost::any	get (TID tid)
	generic function for fetching a value form a column (slow)
void	print () const throw ()
	prints the content of a column
size_t	size () const throw ()
	returns the number of values (rows) in a column
unsigned int	getSizeinBytes () const throw ()
	returns the size in bytes the column consumes in main memory
const ColumnPtr	copy () const
	virtual copy constructor
bool	store (const std::string &path)
	store a column on the disc
bool	load (const std::string &path)
	load column from disc
T &	operator[] (const int index)
	defines operator[] for this class, which enables the user to thread all typed columns as arrays.
	DeltaCompressedColumn (const std::string &name, AttributeType db_type)
	~DeltaCompressedColumn ()
bool	insert (const boost::any &new_Value)
	appends a value new_Value to end of column
bool	insert (const T &new_value)
template<typename InputIterator >
bool	insert (InputIterator first, InputIterator last)
bool	update (TID tid, const boost::any &new_value)
	updates the value on position tid with a value new_Value
bool	update (PositionListPtr tid, const boost::any &new_value)
	updates the values specified by the position list with a value new_Value
bool	remove (TID tid)
	deletes the value on position tid
bool	remove (PositionListPtr tid)
	deletes the values defined in the position list
bool	clearContent ()
	deletes all values stored in the column
const boost::any	get (TID tid)
	generic function for fetching a value form a column (slow)
void	print () const throw ()
	prints the content of a column
size_t	size () const throw ()
	returns the number of values (rows) in a column
unsigned int	getSizeinBytes () const throw ()
	returns the size in bytes the column consumes in main memory
const ColumnPtr	copy () const
	virtual copy constructor
bool	store (const std::string &path)
	store a column on the disc
bool	load (const std::string &path)
	load column from disc
T &	operator[] (const int index)
	defines operator[] for this class, which enables the user to thread all typed columns as arrays.
Private Member Functions
void	compress_insert (uint new_value)
void	compress_update (TID tid, const uint &new_value_)
void	compress_update_part (uint &i, uint old_delta, uint new_delta)
void	compress_delete (TID tid)
uint	uncompress (const uint index)
uint	decode (uint &index)
const uint	encoded_length (const uint &cvalue)
void	compress_insert (uint new_value)
void	compress_update (TID tid, const uint &new_value_)
void	compress_update_part (uint &i, uint old_delta, uint new_delta)
void	compress_delete (TID tid)
uint	uncompress (const uint index)
uint	decode (uint &index)
const uint	encoded_length (const uint &cvalue)
Private Attributes
std::vector< uchar >	cvalues_
uint	size_
T	hack_last_uncompressed

template<class T>
class CoGaDB::DeltaCompressedColumn< T >

---

Constructor & Destructor Documentation

template<class T >

CoGaDB::DeltaCompressedColumn< T >::DeltaCompressedColumn	(	const std::string &	name,
		AttributeType	db_type
	)

References CoGaDB::DeltaCompressedColumn< T >::size_.

template<class T >

CoGaDB::DeltaCompressedColumn< T >::~DeltaCompressedColumn

(

)

template<class T >

CoGaDB::DeltaCompressedColumn< T >::DeltaCompressedColumn	(	const std::string &	name,
		AttributeType	db_type
	)

template<class T >

CoGaDB::DeltaCompressedColumn< T >::~DeltaCompressedColumn

(

)

---

Member Function Documentation

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::clearContent

(

)

[virtual]

deletes all values stored in the column

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::clearContent

(

)

[virtual]

deletes all values stored in the column

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_delete

(

TID

tid

)

[private]

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_delete

(

TID

tid

)

[private]

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_insert

(

uint

new_value

)

[private]

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_insert

(

uint

new_value

)

[private]

References delta().

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template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_update	(	TID	tid,
		const uint &	new_value_
	)		[private]

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_update	(	TID	tid,
		const uint &	new_value_
	)		[private]

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::insert(), CoGaDB::DeltaCompressedColumn< std::string >::remove(), and CoGaDB::DeltaCompressedColumn< std::string >::update().

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template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_update_part	(	uint &	i,
		uint	old_delta,
		uint	new_delta
	)		[private]

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::compress_update_part	(	uint &	i,
		uint	old_delta,
		uint	new_delta
	)		[private]

template<class T >

const ColumnPtr CoGaDB::DeltaCompressedColumn< T >::copy

(

)

const [virtual]

virtual copy constructor

Returns:

a ColumnPtr to an exakt copy of the current column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

const ColumnPtr CoGaDB::DeltaCompressedColumn< T >::copy

(

)

const [virtual]

virtual copy constructor

Returns:

a ColumnPtr to an exakt copy of the current column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

uint CoGaDB::DeltaCompressedColumn< T >::decode

(

uint &

index

)

[private]

template<class T >

uint CoGaDB::DeltaCompressedColumn< T >::decode

(

uint &

index

)

[private]

template<class T >

const uint CoGaDB::DeltaCompressedColumn< T >::encoded_length

(

const uint &

cvalue

)

[private]

template<class T >

const uint CoGaDB::DeltaCompressedColumn< T >::encoded_length

(

const uint &

cvalue

)

[private]

template<class T >

const boost::any CoGaDB::DeltaCompressedColumn< T >::get

(

TID

tid

)

[virtual]

generic function for fetching a value form a column (slow)

check whether the object is valid (e.g., when a tid is not valid, then the returned object is invalid as well)

Returns:

object of type boost::any containing the value on position tid

Implements CoGaDB::CompressedColumn< T >.

template<class T >

const boost::any CoGaDB::DeltaCompressedColumn< T >::get

(

TID

tid

)

[virtual]

generic function for fetching a value form a column (slow)

check whether the object is valid (e.g., when a tid is not valid, then the returned object is invalid as well)

Returns:

object of type boost::any containing the value on position tid

Implements CoGaDB::CompressedColumn< T >.

template<class T >

unsigned int CoGaDB::DeltaCompressedColumn< T >::getSizeinBytes

(

)

const throw () [virtual]

returns the size in bytes the column consumes in main memory

Implements CoGaDB::CompressedColumn< T >.

template<class T >

unsigned int CoGaDB::DeltaCompressedColumn< T >::getSizeinBytes

(

)

const throw () [virtual]

returns the size in bytes the column consumes in main memory

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::insert

(

const boost::any &

new_Value

)

[virtual]

appends a value new_Value to end of column

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::insert().

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template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::insert

(

const boost::any &

new_Value

)

[virtual]

appends a value new_Value to end of column

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::insert

(

const T &

new_value

)

[virtual]

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::insert

(

const T &

new_value

)

[virtual]

Implements CoGaDB::CompressedColumn< T >.

template<class T >

template<typename InputIterator >

bool CoGaDB::DeltaCompressedColumn< T >::insert	(	InputIterator	first,
		InputIterator	last
	)

template<typename T >

template<typename InputIterator >

bool CoGaDB::DeltaCompressedColumn< T >::insert	(	InputIterator	first,
		InputIterator	last
	)

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::load

(

const std::string &

path

)

[virtual]

load column from disc

calling load on a column that is not empty yields undefined behaviour

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::load

(

const std::string &

path

)

[virtual]

load column from disc

calling load on a column that is not empty yields undefined behaviour

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

T& CoGaDB::DeltaCompressedColumn< T >::operator[]

(

const int

index

)

[virtual]

defines operator[] for this class, which enables the user to thread all typed columns as arrays.

Note that this method is pure virtual, so it has to be defined in a derived class.

Returns:

a reference to the value at position index

Implements CoGaDB::CompressedColumn< T >.

template<class T >

T & CoGaDB::DeltaCompressedColumn< T >::operator[]

(

const int

index

)

[virtual]

defines operator[] for this class, which enables the user to thread all typed columns as arrays.

Note that this method is pure virtual, so it has to be defined in a derived class.

Returns:

a reference to the value at position index

Implements CoGaDB::CompressedColumn< T >.

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::print

(

)

const throw () [virtual]

prints the content of a column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

void CoGaDB::DeltaCompressedColumn< T >::print

(

)

const throw () [virtual]

prints the content of a column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::remove

(

TID

tid

)

[virtual]

deletes the value on position tid

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::remove

(

TID

tid

)

[virtual]

deletes the value on position tid

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::remove

(

PositionListPtr

tid

)

[virtual]

deletes the values defined in the position list

assumes tid list is sorted ascending

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::remove

(

PositionListPtr

tid

)

[virtual]

deletes the values defined in the position list

assumes tid list is sorted ascending

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

size_t CoGaDB::DeltaCompressedColumn< T >::size

(

)

const throw () [virtual]

returns the number of values (rows) in a column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

size_t CoGaDB::DeltaCompressedColumn< T >::size

(

)

const throw () [virtual]

returns the number of values (rows) in a column

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::store

(

const std::string &

path

)

[virtual]

store a column on the disc

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::store

(

const std::string &

path

)

[virtual]

store a column on the disc

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

uint CoGaDB::DeltaCompressedColumn< T >::uncompress

(

const uint

index

)

[private]

template<class T >

uint CoGaDB::DeltaCompressedColumn< T >::uncompress

(

const uint

index

)

[private]

References delta().

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::compress_update(), CoGaDB::DeltaCompressedColumn< std::string >::operator[](), CoGaDB::DeltaCompressedColumn< std::string >::remove(), and CoGaDB::DeltaCompressedColumn< std::string >::update().

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template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::update	(	TID	tid,
		const boost::any &	new_Value
	)		[virtual]

updates the value on position tid with a value new_Value

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::update	(	TID	tid,
		const boost::any &	new_Value
	)		[virtual]

updates the value on position tid with a value new_Value

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::update().

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template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::update	(	PositionListPtr	tids,
		const boost::any &	new_value
	)		[virtual]

updates the values specified by the position list with a value new_Value

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

template<class T >

bool CoGaDB::DeltaCompressedColumn< T >::update	(	PositionListPtr	tids,
		const boost::any &	new_value
	)		[virtual]

updates the values specified by the position list with a value new_Value

Returns:

true for sucess and false in case an error occured

Implements CoGaDB::CompressedColumn< T >.

---

Member Data Documentation

template<class T >

std::vector< uchar > CoGaDB::DeltaCompressedColumn< T >::cvalues_ [private]

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::clearContent(), CoGaDB::DeltaCompressedColumn< std::string >::compress_update(), CoGaDB::DeltaCompressedColumn< std::string >::get(), CoGaDB::DeltaCompressedColumn< std::string >::getSizeinBytes(), CoGaDB::DeltaCompressedColumn< std::string >::insert(), CoGaDB::DeltaCompressedColumn< std::string >::load(), CoGaDB::DeltaCompressedColumn< std::string >::remove(), CoGaDB::DeltaCompressedColumn< std::string >::size(), CoGaDB::DeltaCompressedColumn< std::string >::store(), CoGaDB::DeltaCompressedColumn< std::string >::uncompress(), and CoGaDB::DeltaCompressedColumn< std::string >::update().

template<class T >

T CoGaDB::DeltaCompressedColumn< T >::hack_last_uncompressed [private]

Referenced by CoGaDB::DeltaCompressedColumn< std::string >::operator[]().

template<class T >

uint CoGaDB::DeltaCompressedColumn< T >::size_ [private]

Referenced by CoGaDB::DeltaCompressedColumn< T >::DeltaCompressedColumn().

---

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

• /home/sebastian/gpudbms/trunk/cogadb/include/compression/delta_compressed_column.hpp
• /home/sebastian/gpudbms/trunk/cogadb/include/compression/tmp/db2/compression/delta_compressed_column.hpp