tmudr::UniqueConstraintInfo Class Reference

A uniqueness constraint. More...

#include <sqludr.h>

Inheritance diagram for tmudr::UniqueConstraintInfo:

Public Member Functions
	UniqueConstraintInfo ()
int	getNumUniqueColumns () const
int	getUniqueColumn (int i) const
void	addColumn (int c)

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Detailed Description

A uniqueness constraint.

A list of columns that, together, form a unique key

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Constructor & Destructor Documentation

UniqueConstraintInfo::UniqueConstraintInfo

(

)

Default constructor for an empty uniqueness constraint.

Use method addColumn() to add columns.

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Member Function Documentation

void UniqueConstraintInfo::addColumn

(

int

c

)

Add a column to a uniqueness constraint.

Parameters:

c

Column number/ordinal of one of the unique columns in the constraint.

int UniqueConstraintInfo::getNumUniqueColumns

(

)

const

Get the number of columns that form the unique key.

Returns:

Number of columns in the uniqueness constraint.

int UniqueConstraintInfo::getUniqueColumn

(

int

i

)

const

Get a column of the uniqueness constraint by iterator.

Like in other methods, we use an integer to iterate over the columns in the set. Note that the columns form a set, so this number i is merely there to iterate over the set of columns.

Parameters:

i

A number between 0 and getNumUniqueColumns()-1.

Returns:

Column number/ordinal of the unique column.

Exceptions:

UDRException

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

• sqludr.h
• sqludr.cpp