The columnure of a database. More...

#include <dbcolumn.h>

Inheritance diagram for DbColumn:

Classes
union	ColFormat

Public Types
enum	ForeignBehaviour { FB_CHOOSE, FB_CHOOSE_ADD }

enum	DataType { DTY_INVALID = -1, DTY_BIGINT, DTY_BINARY, DTY_BIT, DTY_TRISTATE, DTY_CHAR, DTY_DATE, DTY_DATETIME, DTY_DATETIME2, DTY_DATETIMEOFFSET, DTY_DECIMAL, DTY_DECIMALSCALE, DTY_FLOAT, DTY_HIERARCHYID, DTY_IMAGE, DTY_INTEGER, DTY_MONEY, DTY_NCHAR, DTY_NTEXT, DTY_NUMERIC, DTY_NUMERICSCALE, DTY_NVARCHAR, DTY_REAL, DTY_ROWVERSION, DTY_SMALLDATETIME, DTY_SMALLINT, DTY_SMALLMONEY, DTY_SQL, DTY_TEXT, DTY_TIME, DTY_TINYINT, DTY_UNIQUEIDENTIFIER, DTY_VARBINARY, DTY_VARCHAR, DTY_XML, DTY_CALLBACK, DTY_MAX }

enum	BoolFormat { BF_Y_UPPER, BF_T_UPPER, BF_YES_CAMEL, BF_YES_LOWER, BF_YES_UPPER, BF_ON_CAMEL, BF_ON_LOWER, BF_ON_UPPER, BF_TRUE_CAMEL, BF_TRUE_LOWER, BF_TRUE_UPPER, BF_STRING_ON }

typedef QVariant(*	Callback) (const DbTaew &table, const DbColumn &colorig, const QSqlRecord &rec, int role, void *user_data)
	Callback used to retreive the value for a DTY_CALLBACK column.

Public Types inherited from DbObject
enum	Type { DBO_INVALID = -1, DBO_STRUCT, DBO_COLUMN, DBO_RECORD, DBO_TABLE, DBO_SUBSET, DBO_CPLX_VIEW, DBO_CUSTOM, DBO_MAX }
	The types of objects that use this class as a base. More...

Public Member Functions
	DbColumn ()
	Default constructor. More...

	DbColumn (const QString &col_name, int col_id, int real_col_id, int length, const QString &col_label, DataType datatype, bool nulls, bool autoincrement, const QString &default_value, const QString &format, bool read_only, int virtrefcol, const QString &foreign_table, const QString &foreign_key, const QString &foreign_ref, ForeignBehaviour foreign_behaviour)
	Default constructor.

virtual	~DbColumn ()
	Destructor. More...

virtual Type	type () const
	The type of this object.

bool	isForeignKey () const
	Tell if this column has a foreign key.

bool	isVirtual () const
	Tell if this column is a virtual one.

bool	isDynamic () const
	Tell if this column is a virtual one.

QVariant	kbData (const DbTaew &table, const QSqlRecord &rec, int role=Qt::DisplayRole, void *user_data=NULL) const
	Retreive the data using the callback. More...

QVariant	formattedData (const QVariant &original_value) const

Public Member Functions inherited from DbObject
	DbObject ()
	Default constructor. More...

virtual	~DbObject ()
	Destructor. More...

DbStructMeta *	asStruct ()
	Get this instance as a DbStruct.

DbColumn *	asColumn ()
	Get this instance as a DbColumn.

DbRecord *	asRecord ()
	Get this instance as a DbRecord.

DbTable *	asTable ()
	Get this instance as a DbTable.

DbView *	asView ()
	Get this instance as a DbView.

bool	isStruct ()
	Tell if this instance is a DbStruct.

bool	isColumn ()
	Tell if this instance is a DbColumn.

bool	isRecord ()
	Tell if this instance is a DbRecord.

bool	isTable ()
	Tell if this instance is a DbTable.

bool	isView ()
	Tell if this instance is a DbView.

bool	isCustom ()
	Tell if this instance is a custom one.

Public Attributes
QString	col_name_

int	col_id_

int	real_col_id_

int	length_

QString	col_label_

DataType	datatype_

bool	nulls_

bool	autoincrement_

QString	default_value_

bool	read_only_

int	virtrefcol_

QString	foreign_table_

QString	foreign_key_

QString	foreign_ref_

ForeignBehaviour	foreign_behaviour_

QString	original_format_

ColFormat	format_

QChar	fill_char_

char	nr_format_

int	precision_

Detailed Description

The columnure of a database.

Detailed description.

Member Enumeration Documentation

enum DbColumn::DataType

Enumerator
DTY_INVALID	invalid data type
DTY_CALLBACK	dynamically computed value or retrieved from database
DTY_MAX	first invalid value

enum DbColumn::ForeignBehaviour

Enumerator
FB_CHOOSE	the user can choose values from the other table
FB_CHOOSE_ADD	the user can choose values from or add values to the other table

Constructor & Destructor Documentation

DbColumn::DbColumn ( )

Default constructor.

Detailed description for .

DbColumn::~DbColumn ( )

virtual

Destructor.

Detailed description for decolumnor.

Member Function Documentation

QVariant DbColumn::kbData	(	const DbTaew &	table,
		const QSqlRecord &	rec,
		int	role = `Qt::DisplayRole`,
		void *	user_data = `NULL`
	)		const

Retreive the data using the callback.

If the callback was not set QVariant() is returned.

Parameters

table	The table where this column belongs.
rec	The record for which data is being requested.
role	Requested role.
user_data	Opaque data passed along to the callback.

Returns: The data for this record and column.

Member Data Documentation

QChar DbColumn::fill_char_

character used for padding, if any

ForeignBehaviour DbColumn::foreign_behaviour_

how are we going to interact with foreign table

QString DbColumn::foreign_key_

Name of the column in the referenced table

QString DbColumn::foreign_ref_

The columns that should replace this column

QString DbColumn::foreign_table_

The table that this column references

ColFormat DbColumn::format_

column format (depends on datatype

char DbColumn::nr_format_

number format (e, E, f, g, G)

QString DbColumn::original_format_

actual format passed to the constructor

int DbColumn::precision_

number of significant digits for real numbers, base for integers

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

Classes

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation