KDbAlterTableHandler::RemoveFieldAction Class Reference

#include <KDbAlter.h>

Inheritance diagram for KDbAlterTableHandler::RemoveFieldAction:

Public Member Functions
	RemoveFieldAction (const QString &fieldName, int uid)
QString	debugString (const DebugOptions &debugOptions=DebugOptions()) override
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
	RemoveFieldAction (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)

Additional Inherited Members
Protected Attributes inherited from KDbAlterTableHandler::FieldActionBase
int	m_fieldUID

Detailed Description

Defines an action for removing a single table field.

Definition at line 335 of file KDbAlter.h.

Constructor & Destructor Documentation

RemoveFieldAction()

KDbAlterTableHandler::RemoveFieldAction::RemoveFieldAction ( bool  null )

explicitprotected

, used for constructing null action

Definition at line 489 of file KDbAlter.cpp.

Member Function Documentation

execute()

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

overrideprotectedvirtual

Performs physical execution of this action.

Todo:

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 540 of file KDbAlter.cpp.

simplifyActions()

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

overridevirtual

Legend: A,B==objects, P==property, [....]==action, (..,..,..) group of actions, <...> internal operation. Preconditions: we assume there cannot be such case encountered: ([remove A], [do something related on A]) (except for [remove A], [insert A]) General Case: it's safe to always insert a [remove A] action.

Todo:

not checked

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 521 of file KDbAlter.cpp.

updateAlteringRequirements()

void KDbAlterTableHandler::RemoveFieldAction::updateAlteringRequirements ( )

overrideprotectedvirtual

Todo:

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

Todo:

Reimplemented from KDbAlterTableHandler::ActionBase.

Definition at line 498 of file KDbAlter.cpp.

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

• KDbAlter.h
• KDbAlter.cpp