Representation of a Page (content from file). Each page holds data from one column. However, all data at one page will be of same type. More...

#include <page.hpp>

Collaboration diagram for CoGaDB::Page:

[legend]

List of all members.

Public Member Functions
	Page (bool, AttributeType, bool)
	Page (const Page &)
Page &	operator= (const Page &)
	Page (std::ifstream &, char)
virtual	~Page ()
bool	isCompressed () const
AttributeType	getType () const
bool	isDirty () const
bool	isInUsage () const
unsigned short	getDataSize () const
int	getFileOffset () const
unsigned short	getMaxDataSize () const
void	printStatus () const
int	getSizeOfOneValue () const
void	print () const
bool	isFull () const
char *	getData ()
unsigned short	count () const
char *	getStringByIndex (unsigned int index, unsigned short &valueSize)
char *	getValueByIndex (unsigned int index, unsigned short &valueSize)
Protected Member Functions
bool	appendData (std::ifstream &)
char	getStatusBitAt (char) const
bool	append (std::ifstream &)
bool	appendVarchar (std::ifstream &)
void	setStatusBit (char, bool)
void	printInt (unsigned short) const
void	printFloat (unsigned short) const
void	printBool (unsigned short) const
int	printVarchar (unsigned short) const
Private Attributes
Header	_header
char *	_data
bool	_isFull
std::vector< unsigned int >	_value_offsets

Detailed Description

Representation of a Page (content from file). Each page holds data from one column. However, all data at one page will be of same type.

Constructor & Destructor Documentation

CoGaDB::Page::Page	(	bool	compressed,
		AttributeType	type,
		bool	bigDataSize
	)

References _data, _header, BIT_LENGTH, BIT_TYPE_LOW, CoGaDB::Header::Count, DATA_OFFSET, getMaxDataSize(), CoGaDB::Header::Offset, CoGaDB::Header::Size, and CoGaDB::Header::Status.

Here is the call graph for this function:

CoGaDB::Page::Page ( const Page & p )

CoGaDB::Page::Page	(	std::ifstream &	source,
		char	status
	)

References _data, _header, appendData(), CoGaDB::Header::Count, getMaxDataSize(), CoGaDB::Header::Offset, CoGaDB::Header::Size, and CoGaDB::Header::Status.

Here is the call graph for this function:

CoGaDB::Page::~Page ( ) [virtual]

Member Function Documentation

bool CoGaDB::Page::append ( std::ifstream & source ) [protected]

References _data, _header, _value_offsets, CoGaDB::Header::Count, getMaxDataSize(), getSizeOfOneValue(), and CoGaDB::Header::Size.

Referenced by appendData().

Here is the call graph for this function:

Here is the caller graph for this function:

bool CoGaDB::Page::appendData ( std::ifstream & source ) [protected]

References append(), appendVarchar(), CoGaDB::BOOLEAN, CoGaDB::FLOAT, getType(), CoGaDB::INT, and CoGaDB::VARCHAR.

Referenced by Page().

Here is the call graph for this function:

Here is the caller graph for this function:

bool CoGaDB::Page::appendVarchar ( std::ifstream & source ) [protected]

References _data, _header, _isFull, _value_offsets, CoGaDB::Header::Count, getMaxDataSize(), CoGaDB::Header::Size, and VARCHAR_LENGTH_BYTES.

Referenced by appendData().

Here is the call graph for this function:

Here is the caller graph for this function:

unsigned short CoGaDB::Page::count ( ) const

References _header, and CoGaDB::Header::Count.

Referenced by printStatus().

Here is the caller graph for this function:

char * CoGaDB::Page::getData ( )

References _data.

unsigned short CoGaDB::Page::getDataSize ( ) const

Gets size of the current holding data (in bytes).

References _header, and CoGaDB::Header::Size.

Referenced by isFull(), and printStatus().

Here is the caller graph for this function:

int CoGaDB::Page::getFileOffset ( ) const

References _header, and CoGaDB::Header::Offset.

unsigned short CoGaDB::Page::getMaxDataSize ( ) const

Gets the max. size of the data this page can hold (in bytes).

References BIT_LENGTH, and getStatusBitAt().

Referenced by append(), appendVarchar(), isFull(), Page(), and printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

int CoGaDB::Page::getSizeOfOneValue ( ) const

References CoGaDB::BOOLEAN, CoGaDB::FLOAT, getType(), and CoGaDB::INT.

Referenced by append(), getValueByIndex(), isFull(), print(), and printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

char CoGaDB::Page::getStatusBitAt ( char pos ) const [protected]

References _header, and CoGaDB::Header::Status.

Referenced by getMaxDataSize(), getType(), isCompressed(), isDirty(), and isInUsage().

Here is the caller graph for this function:

char * CoGaDB::Page::getStringByIndex	(	unsigned int	index,
		unsigned short &	valueSize
	)

References _data, and _value_offsets.

AttributeType CoGaDB::Page::getType ( ) const

References BIT_TYPE_HIGH, BIT_TYPE_LOW, and getStatusBitAt().

Referenced by appendData(), getSizeOfOneValue(), print(), and printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

char * CoGaDB::Page::getValueByIndex	(	unsigned int	index,
		unsigned short &	valueSize
	)

References _data, _value_offsets, and getSizeOfOneValue().

Here is the call graph for this function:

bool CoGaDB::Page::isCompressed ( ) const

References BIT_COMPRESSED, and getStatusBitAt().

Referenced by printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

bool CoGaDB::Page::isDirty ( ) const

References BIT_DIRTY, and getStatusBitAt().

Referenced by printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

bool CoGaDB::Page::isFull ( ) const

References _isFull, getDataSize(), getMaxDataSize(), getSizeOfOneValue(), and CoGaDB::one.

Here is the call graph for this function:

bool CoGaDB::Page::isInUsage ( ) const

References BIT_USAGE, and getStatusBitAt().

Referenced by printStatus().

Here is the call graph for this function:

Here is the caller graph for this function:

Page & CoGaDB::Page::operator= ( const Page & )

void CoGaDB::Page::print ( ) const

References _header, CoGaDB::BOOLEAN, CoGaDB::FLOAT, getSizeOfOneValue(), getType(), CoGaDB::INT, printBool(), printFloat(), printInt(), printVarchar(), CoGaDB::Header::Size, and CoGaDB::VARCHAR.

Here is the call graph for this function:

void CoGaDB::Page::printBool ( unsigned short pos ) const [protected]

References _data.

Referenced by print().

Here is the caller graph for this function:

void CoGaDB::Page::printFloat ( unsigned short pos ) const [protected]

References _data.

Referenced by print().

Here is the caller graph for this function:

void CoGaDB::Page::printInt ( unsigned short pos ) const [protected]

References _data.

Referenced by print().

Here is the caller graph for this function:

void CoGaDB::Page::printStatus ( ) const

References _header, count(), getDataSize(), getMaxDataSize(), getSizeOfOneValue(), getType(), isCompressed(), isDirty(), isInUsage(), and CoGaDB::Header::Offset.

Here is the call graph for this function:

int CoGaDB::Page::printVarchar ( unsigned short pos ) const [protected]

References _data, and VARCHAR_LENGTH_BYTES.

Referenced by print().

Here is the caller graph for this function:

void CoGaDB::Page::setStatusBit	(	char	pos,
		bool	val
	)		`[protected]`

References _header, and CoGaDB::Header::Status.

Member Data Documentation

char* CoGaDB::Page::_data [private]

The data of the page -> all of the same type.

Referenced by append(), appendVarchar(), getData(), getStringByIndex(), getValueByIndex(), Page(), printBool(), printFloat(), printInt(), and printVarchar().

Header CoGaDB::Page::_header [private]

Information of this page (7 bytes).

Referenced by append(), appendVarchar(), count(), getDataSize(), getFileOffset(), getStatusBitAt(), Page(), print(), printStatus(), and setStatusBit().

bool CoGaDB::Page::_isFull [private]

Referenced by appendVarchar(), and isFull().

std::vector<unsigned int> CoGaDB::Page::_value_offsets [private]

Referenced by append(), appendVarchar(), getStringByIndex(), and getValueByIndex().

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

/home/sebastian/gpudbms/trunk/cogadb/include/persistence/page.hpp
/home/sebastian/gpudbms/trunk/cogadb/src/persistence/page.cpp

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation