Firfuorida::Column Class Reference

Contains information about a single column, either to creaste or to modify. More...

#include <Firfuorida/Column>

Inheritance diagram for Firfuorida::Column:

Public Member Functions
	~Column () override
	Deconstructs the Column object.
void	after (const QString &otherColumn)
	Put/move this column after otherColumn.
Column *	autoIncrement (bool autoIncrement=true)
	Enables or disables the auto increment feature for this column.
void	change ()
	Mark this column as a column to change instead of creating it.
Column *	charset (const QString &charset)
	Sets the character set used for this column.
Column *	collation (const QString &collation)
	Sets the collation used for this column.
Column *	comment (const QString &comment)
	Add a comment to the column.
Column *	defaultValue (const QVariant &defVal)
	Sets the default value for this column.
void	first ()
	Add/move this column to the beginning as first column.
Column *	nullable (bool isNullable=true)
	Sets the columns to nullable or not.
Column *	onDelete (const QString &referenceOption)
	Adds the onDelete action to a foreign key column.
Column *	onUpdate (const QString &referenceOption)
	Adds the onUpdate action to a foreign key column.
Column *	primary (bool primary=true)
	Makes the column a primary key column or not.
Column *	unique (bool unique=true)
	Makes the column a unique key column or not.
Column *	unSigned (bool unSigned=true)
	Sets the column to signed or unsigned.

Detailed Description

Contains information about a single column, either to creaste or to modify.

The Column object can only be created by functions of the Table class.

Example

example.cpp

/*
 * SPDX-FileCopyrightText: (C) 2019-2022 Matthias Fehring <https://www.huessenbergnetz.de>
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
 
#include "example.h"
 
M20190121T174100_Example::M20190121T174100_Example(Firfuorida::Migrator *parent) :
    Firefuorida::Migration(parent)
{
}
 
M20190121T174100_Example::~M20190121T174100_Example()
{
}
 
void M20190121T174100_Example::up()
{
    // create a new table named "ExampleTable" if it not already exists
    auto t = createTableIfNotExists(QStringLiteral("ExampleTable"));
    // create a new unsigned tiny integer column on that table with the
    // default name "id" and auto incrementation enabled
    t->tinyIncrements();
    // create a new signed tiny integer column on that table with the
    // name "tinyIntCol" and UNIQUE KEY index.
    t->tinyInteger(QStringLiteral("tinyIntCol"))->unique();
    // create a new nullable tiny blob column on that table with the name
    // "tinyBlobCol"
    t->tinyBlob(QStringLiteral("tinyBlobCol"))->nullable();
    // create a new tiny text column on that table with the name "tinyTextCol"
    // and the default value "foobar"
    t->tinyText(QStringLiteral("tinyTextCol"))->defaultValue(QStringLiteral("foobar"));
}
 
void M20190121T174100_Example::down()
{
    // drop the table named "ExampleTable" if it exists
    dropIfExists(QStringLiteral("ExampleTable"));
}

Constructor & Destructor Documentation

~Column()

Column::~Column ( )

overridedefault

Deconstructs the Column object.

Member Function Documentation

after()

void Column::after

(

const QString &

otherColumn

)

Put/move this column after otherColumn.

autoIncrement()

Column * Column::autoIncrement

(

bool

autoIncrement = true

)

Enables or disables the auto increment feature for this column.

change()

void Column::change

(

)

Mark this column as a column to change instead of creating it.

charset()

Column * Column::charset

(

const QString &

charset

)

Sets the character set used for this column.

collation()

Column * Column::collation

(

const QString &

collation

)

Sets the collation used for this column.

comment()

Column * Column::comment

(

const QString &

comment

)

Add a comment to the column.

Note

The maximum size for a column comment on MySQL/MariaDB is 1024 characters.

defaultValue()

Column * Column::defaultValue

(

const QVariant &

defVal

)

Sets the default value for this column.

first()

void Column::first

(

)

Add/move this column to the beginning as first column.

nullable()

Column * Column::nullable

(

bool

isNullable = true

)

Sets the columns to nullable or not.

onDelete()

Column * Column::onDelete

(

const QString &

referenceOption

)

Adds the onDelete action to a foreign key column.

onUpdate()

Column * Column::onUpdate

(

const QString &

referenceOption

)

Adds the onUpdate action to a foreign key column.

primary()

Column * Column::primary

(

bool

primary = true

)

Makes the column a primary key column or not.

unique()

Column * Column::unique

(

bool

unique = true

)

Makes the column a unique key column or not.

unSigned()

Column * Column::unSigned

(

bool

unSigned = true

)

Sets the column to signed or unsigned.