ibis::compRange::barrel Class Reference

A barrel to hold a list of variables. More...

#include <qExpr.h>

Inheritance diagram for ibis::compRange::barrel:

List of all members.

Public Member Functions
	barrel (const term *const t)
bool	equivalent (const barrel &rhs) const
	Is the given barrel of variables equivalent to this one?
const char *	name (uint32_t i) const
uint32_t	recordVariable (const char *name)
	Record the specified name.
void	recordVariable (const term *const t)
	Record the variable names appear in the term.
uint32_t	size () const
double &	value (uint32_t i)
const double &	value (uint32_t i) const
Protected Types
typedef std::map< const char *, uint32_t, ibis::lessi >	termMap
Protected Member Functions
double	getValue (const char *nm) const
	Return the value of the named variable.
double	getValue (uint32_t i) const
Protected Attributes
std::vector< const char * >	namelist
	List of variable names.
termMap	varmap
	Associate a variable name with a position in varvalues and namelist.
std::vector< double >	varvalues
	All values are casted to double.
Friends
class	variable

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Detailed Description

A barrel to hold a list of variables.

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Member Function Documentation

bool ibis::compRange::barrel::equivalent

(

const barrel &

rhs

)

const

Is the given barrel of variables equivalent to this one?

Return true if the two barrels contain the same set of variables, otherwise false.

References varmap.

Referenced by ibis::query::processJoin().

uint32_t ibis::compRange::barrel::recordVariable

(

const char *

name

)

[inline]

Record the specified name.

Record a variable name and return its position in the list of variables in the barrel.

Return the variable number that is to be used later in functions name and value for retrieving the variable name and its value.

References namelist, varmap, and varvalues.

void ibis::compRange::barrel::recordVariable

(

const term *const

t

)

Record the variable names appear in the term.

Record variables from a term recursively.

References ibis::qExpr::getLeft(), ibis::qExpr::getRight(), and ibis::compRange::term::termType().

Referenced by ibis::part::doScan(), ibis::part::evaluateJoin(), and ibis::query::processJoin().

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Member Data Documentation

termMap ibis::compRange::barrel::varmap [protected]

Associate a variable name with a position in varvalues and namelist.

Referenced by equivalent(), getValue(), and recordVariable().

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

• qExpr.h
• qExpr.cpp