KDbAlterTableHandler::InsertFieldAction Class Reference

#include <KDbAlter.h>

Inheritance diagram for KDbAlterTableHandler::InsertFieldAction:

Public Member Functions
	InsertFieldAction ()
	InsertFieldAction (const InsertFieldAction &action)
	InsertFieldAction (int fieldIndex, KDbField *newField, int uid)
QString	debugString (const DebugOptions &debugOptions=DebugOptions()) override
const KDbField *	field () const
int	index () const
void	setField (KDbField *field)
void	setIndex (int index)
void	simplifyActions (ActionDictDict *fieldActions) override
tristate	updateTableSchema (KDbTableSchema *table, KDbField *field, QHash< QString, QString > *fieldHash) override
Public Member Functions inherited from KDbAlterTableHandler::FieldActionBase
	FieldActionBase (const QString &fieldName, int uid)
QString	fieldName () const
void	setFieldName (const QString &fieldName)
int	uid () const
Public Member Functions inherited from KDbAlterTableHandler::ActionBase
void	debug (const DebugOptions &debugOptions=DebugOptions())
bool	isNull () const
ChangeFieldPropertyAction &	toChangeFieldPropertyAction ()
InsertFieldAction &	toInsertFieldAction ()
MoveFieldPositionAction &	toMoveFieldPositionAction ()
RemoveFieldAction &	toRemoveFieldAction ()

Protected Member Functions
	InsertFieldAction (bool null)
tristate	execute (KDbConnection *conn, KDbTableSchema *table) override
void	updateAlteringRequirements () override
Protected Member Functions inherited from KDbAlterTableHandler::FieldActionBase
	FieldActionBase (bool null)
Protected Member Functions inherited from KDbAlterTableHandler::ActionBase
	ActionBase (bool null)
int	alteringRequirements () const
void	setAlteringRequirements (int alteringRequirements)
virtual bool	shouldBeRemoved (ActionDictDict *fieldActions)

Protected Attributes
int	m_index
Protected Attributes inherited from KDbAlterTableHandler::FieldActionBase
int	m_fieldUID

Detailed Description

Defines an action for inserting a single table field.

Definition at line 360 of file KDbAlter.h.

Constructor & Destructor Documentation

InsertFieldAction() [1/3]

KDbAlterTableHandler::InsertFieldAction::InsertFieldAction

(

const InsertFieldAction &

action

)

copy ctor

Definition at line 559 of file KDbAlter.cpp.

InsertFieldAction() [2/3]

KDbAlterTableHandler::InsertFieldAction::InsertFieldAction

(

)

Creates null action.

Definition at line 566 of file KDbAlter.cpp.

InsertFieldAction() [3/3]

KDbAlterTableHandler::InsertFieldAction::InsertFieldAction ( bool  null )

explicitprotected

, used for constructing null action

Definition at line 571 of file KDbAlter.cpp.

Member Function Documentation

execute()

tristate KDbAlterTableHandler::InsertFieldAction::execute ( KDbConnection *  conn, KDbTableSchema *  table  )

overrideprotectedvirtual

Performs physical execution of this action.

Todo:

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 703 of file KDbAlter.cpp.

simplifyActions()

void KDbAlterTableHandler::InsertFieldAction::simplifyActions ( ActionDictDict *  fieldActions )

overridevirtual

Legend: A,B==fields, P==property, [....]==action, (..,..,..) group of actions, <...> internal operation.

Case 1: there are "change property" actions after the Insert action. -> change the properties in the Insert action itself and remove the "change property" actions. Examples: [Insert A] && [rename A to B] => [Insert B] [Insert A] && [change property P in field A] => [Insert A with P altered] Comment: we need to do this reduction because otherwise we'd need to do psyhical altering right after [Insert A] if [rename A to B] follows.

Todo:

not checked

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 624 of file KDbAlter.cpp.

updateAlteringRequirements()

void KDbAlterTableHandler::InsertFieldAction::updateAlteringRequirements ( )

overrideprotectedvirtual

Todo:

sometimes add DataConversionRequired (e.g. when relationships require removing orphaned records) ?

Todo:

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 591 of file KDbAlter.cpp.

updateTableSchema()

tristate KDbAlterTableHandler::InsertFieldAction::updateTableSchema ( KDbTableSchema *  table, KDbField *  field, QHash< QString, QString > *  fieldHash  )

overridevirtual

Todo:

add it only when there should be fixed value (e.g. default) set for this new field...

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 692 of file KDbAlter.cpp.

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

• KDbAlter.h
• KDbAlter.cpp