Describes the origin of a single attribute value. More...

#include "WhereCircuit.h"

Public Member Functions
	Locator (std::string t, uuid u, int i)
	Construct a `Locator`.

bool	operator< (Locator that) const
	Lexicographic ordering for use in `std::set`.

std::string	toString () const
	Return a human-readable representation of this locator.

Public Attributes
std::string	table
	Name of the source relation.

uuid	tid
	UUID (row token) of the source tuple.

int	position
	Zero-based column index within the tuple.

Detailed Description

Describes the origin of a single attribute value.

A Locator identifies a specific attribute of a specific tuple in a specific base table as the origin of an output value.

Definition at line 102 of file WhereCircuit.h.

Constructor & Destructor Documentation

◆ Locator()

WhereCircuit::Locator::Locator	(	std::string	t,
		uuid	u,
		int	i
	)

inline

Construct a Locator.

Parameters

t	Source table name.
u	Source tuple UUID.
i	Column position.

Definition at line 113 of file WhereCircuit.h.

Member Function Documentation

◆ operator<()

bool WhereCircuit::Locator::operator< ( WhereCircuit::Locator that ) const

Lexicographic ordering for use in std::set.

Parameters

that	Other `Locator`.

Returns: true if *this is less than that.

Definition at line 188 of file WhereCircuit.cpp.

◆ toString()

std::string WhereCircuit::Locator::toString ( ) const

Return a human-readable representation of this locator.

Returns: String of the form "table[tid].position".

Definition at line 197 of file WhereCircuit.cpp.

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Member Data Documentation

◆ position

int WhereCircuit::Locator::position

Zero-based column index within the tuple.

Definition at line 105 of file WhereCircuit.h.

◆ table

std::string WhereCircuit::Locator::table

Name of the source relation.

Definition at line 103 of file WhereCircuit.h.

◆ tid

uuid WhereCircuit::Locator::tid

UUID (row token) of the source tuple.

Definition at line 104 of file WhereCircuit.h.

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

/home/pierre/git/software/provsql/src/WhereCircuit.h
/home/pierre/git/software/provsql/src/WhereCircuit.cpp

Public Member Functions

Public Attributes