tuple.c File Reference

Tuple implementation for the Relational Algebra Engine. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tuple.h"

Include dependency graph for tuple.c:

Classes
struct	FindAttributeContext
struct	TupleEqualsContext

Functions
Tuple *	tuple_create (void)
	Create a new Tuple.
void	tuple_destroy (Tuple *t)
	Destroy a Tuple and free its memory.
int	tuple_add_attribute (Tuple *t, Attribute *attr)
	Add an Attribute to a Tuple.
void	tuple_print (const Tuple *t)
	Print a Tuple to stdout.
Attribute *	tuple_find_attribute (Tuple *t, const char *name)
	Find an Attribute in a Tuple by name.
int	tuple_equals (Tuple *a, Tuple *b)
	Check if two Tuples are equal (all attributes match).

Detailed Description

Tuple implementation for the Relational Algebra Engine.

Handles creation, destruction, and comparison of tuples, which are sets of attributes and serve as the elements of relations in the relational model.

Function Documentation

tuple_add_attribute()

int tuple_add_attribute	(	Tuple *	t,
		Attribute *	attr
	)

Add an Attribute to a Tuple.

Parameters

t	Pointer to the Tuple.
attr	Pointer to the Attribute to add.

Returns

1 if added, 0 if already present, -1 on error.

tuple_create()

Tuple * tuple_create

(

void

)

Create a new Tuple.

Returns

Pointer to new Tuple, or NULL on failure.

tuple_destroy()

void tuple_destroy

(

Tuple *

t

)

Destroy a Tuple and free its memory.

Parameters

t	Pointer to the Tuple to destroy.

tuple_equals()

int tuple_equals	(	Tuple *	a,
		Tuple *	b
	)

Check if two Tuples are equal (all attributes match).

Parameters

a	Pointer to first Tuple.
b	Pointer to second Tuple.

Returns

1 if equal, 0 otherwise.

tuple_find_attribute()

Attribute * tuple_find_attribute	(	Tuple *	t,
		const char *	name
	)

Find an Attribute in a Tuple by name.

Parameters

t	Pointer to the Tuple.
name	Name of the Attribute to find.

Returns

Pointer to the found Attribute, or NULL if not found.

tuple_print()

void tuple_print

(

const Tuple *

t

)

Print a Tuple to stdout.

Parameters

t	Pointer to the Tuple to print.