Akonadi::ItemModifyJob

#include <itemmodifyjob.h>

Inheritance diagram for Akonadi::ItemModifyJob:

[legend]

Public Member Functions
	ItemModifyJob (const Item &item, QObject *parent=nullptr)

	ItemModifyJob (const Item::List &items, QObject *parent=nullptr)

	~ItemModifyJob () override

void	disableAutomaticConflictHandling ()

void	disableRevisionCheck ()

bool	ignorePayload () const

Item	item () const

Item::List	items () const

void	setIgnorePayload (bool ignore)

void	setUpdateGid (bool update)

bool	updateGid () const

Public Member Functions inherited from Akonadi::Job
	Job (QObject *parent=nullptr)

	~Job () override

QString	errorString () const final

void	start () override

Public Member Functions inherited from KCompositeJob
	KCompositeJob (QObject *parent=nullptr)

Public Member Functions inherited from KJob
	KJob (QObject *parent=nullptr)

Capabilities	capabilities () const

qint64	elapsedTime () const

int	error () const

QString	errorText () const

bool	exec ()

bool	isAutoDelete () const

bool	isFinishedNotificationHidden () const

bool	isStartedWithExec () const

bool	isSuspended () const

unsigned long	percent () const

Q_SCRIPTABLE qulonglong	processedAmount (Unit unit) const

void	setAutoDelete (bool autodelete)

void	setFinishedNotificationHidden (bool hide=true)

void	setUiDelegate (KJobUiDelegate *delegate)

Q_SCRIPTABLE qulonglong	totalAmount (Unit unit) const

KJobUiDelegate *	uiDelegate () const

Public Member Functions inherited from QObject
	QObject (QObject *parent)

QBindable< QString >	bindableObjectName ()

bool	blockSignals (bool block)

const QObjectList &	children () const const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectInfo () const const

void	dumpObjectTree () const const

QList< QByteArray >	dynamicPropertyNames () const const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (Qt::FindChildOptions options) const const

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

bool	isQuickItemType () const const

bool	isWidgetType () const const

bool	isWindowType () const const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const const

void	moveToThread (QThread *targetThread)

QString	objectName () const const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

QVariant	property (const char *name) const const

	Q_CLASSINFO (Name, Value)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_GADGET_EXPORT (EXPORT_MACRO)

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	Q_MOC_INCLUDE Q_MOC_INCLUDE

	Q_NAMESPACE Q_NAMESPACE

	Q_NAMESPACE_EXPORT (EXPORT_MACRO)

	Q_OBJECT Q_OBJECT

	Q_PROPERTY (...)

	Q_REVISION Q_REVISION

	Q_SET_OBJECT_NAME (Object)

	Q_SIGNAL Q_SIGNAL

	Q_SIGNALS Q_SIGNALS

	Q_SLOT Q_SLOT

	Q_SLOTS Q_SLOTS

T	qobject_cast (const QObject *object)

T	qobject_cast (QObject *object)

	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setObjectName (QAnyStringView name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	setProperty (const char *name, QVariant &&value)

bool	signalsBlocked () const const

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)

QThread *	thread () const const

Protected Member Functions
bool	doHandleResponse (qint64 tag, const Protocol::CommandPtr &response) override

void	doStart () override

Protected Member Functions inherited from Akonadi::Job
bool	addSubjob (KJob *job) override

bool	doKill () override

void	emitWriteFinished ()

bool	removeSubjob (KJob *job) override

Protected Member Functions inherited from KCompositeJob
void	clearSubjobs ()

bool	hasSubjobs () const

const QList< KJob * > &	subjobs () const

Protected Member Functions inherited from KJob
virtual bool	doResume ()

virtual bool	doSuspend ()

void	emitPercent (qulonglong processedAmount, qulonglong totalAmount)

void	emitResult ()

void	emitSpeed (unsigned long speed)

bool	isFinished () const

void	setCapabilities (Capabilities capabilities)

void	setError (int errorCode)

void	setErrorText (const QString &errorText)

void	setPercent (unsigned long percentage)

void	setProcessedAmount (Unit unit, qulonglong amount)

void	setProgressUnit (Unit unit)

void	setTotalAmount (Unit unit, qulonglong amount)

void	startElapsedTimer ()

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const const

int	receivers (const char *signal) const const

QObject *	sender () const const

int	senderSignalIndex () const const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Public Types inherited from Akonadi::Job
enum	Error { ConnectionFailed = UserDefinedError , ProtocolVersionMismatch , UserCanceled , Unknown , UserError = UserDefinedError + 42 }

using	List = QList<Job *>

Public Types inherited from KJob
typedef QFlags< Capability >	Capabilities

enum	Capability

enum	Unit

Public Types inherited from QObject
typedef	QObjectList

Properties inherited from QObject
	objectName

Signals inherited from Akonadi::Job
void	aboutToStart (Akonadi::Job *job)

void	writeFinished (Akonadi::Job *job)

Signals inherited from KJob
void	description (KJob *job, const QString &title, const QPair< QString, QString > &field1=QPair< QString, QString >(), const QPair< QString, QString > &field2=QPair< QString, QString >())

void	finished (KJob *job)

void	infoMessage (KJob *job, const QString &message)

void	percentChanged (KJob *job, unsigned long percent)

void	processedAmountChanged (KJob *job, KJob::Unit unit, qulonglong amount)

void	processedSize (KJob *job, qulonglong size)

void	result (KJob *job)

void	resumed (KJob *job)

void	speed (KJob *job, unsigned long speed)

void	suspended (KJob *job)

void	totalAmountChanged (KJob *job, KJob::Unit unit, qulonglong amount)

void	totalSize (KJob *job, qulonglong size)

void	warning (KJob *job, const QString &message)

Public Slots inherited from KJob
bool	kill (KJob::KillVerbosity verbosity=KJob::Quietly)

bool	resume ()

bool	suspend ()

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

QString	tr (const char sourceText, const char disambiguation, int n)

Public Attributes inherited from KJob
	Bytes

	Directories

	Files

	Items

	Killable

	NoCapabilities

	Suspendable

	UnitsCount

Protected Slots inherited from Akonadi::Job
void	slotResult (KJob *job) override

Protected Slots inherited from KCompositeJob
virtual void	slotInfoMessage (KJob *job, const QString &message)

virtual void	slotResult (KJob *job)

Detailed Description

Job that modifies an existing item in the Akonadi storage.

This job is used to writing back items to the Akonadi storage, after the user has changed them in any way. For performance reasons either the full item (including the full payload) can written back or only the meta data of the item.

Example:

// Fetch item with unique id 125
Akonadi::ItemFetchJob *fetchJob = new Akonadi::ItemFetchJob( Akonadi::Item( 125 ) );
connect( fetchJob, SIGNAL(result(KJob*)), SLOT(fetchFinished(KJob*)) );
 
...
 
MyClass::fetchFinished( KJob *job )
{
  if ( job->error() )
    return;
 
  Akonadi::ItemFetchJob *fetchJob = qobject_cast<Akonadi::ItemFetchJob*>( job );
 
  Akonadi::Item item = fetchJob->items().at(0);
 
  // Set a custom flag
  item.setFlag( "\GotIt" );
 
  // Store back modified item
  Akonadi::ItemModifyJob *modifyJob = new Akonadi::ItemModifyJob( item );
  connect( modifyJob, SIGNAL(result(KJob*)), SLOT(modifyFinished(KJob*)) );
}
 
MyClass::modifyFinished( KJob *job )
{
  if ( job->error() )
    qDebug() << "Error occurred";
  else
    qDebug() << "Item modified successfully";
}

Conflict Resolution

When the job is executed, a check is made to ensure that the Item contained in the job is not older than the version of the Item already held in the Akonadi database. If it is older, a conflict resolution dialog is displayed for the user to choose which version of the Item to use, unless disableAutomaticConflictHandling() has been called to disable the dialog, or disableRevisionCheck() has been called to disable version checking altogether.

The item version is checked by comparing the Item::revision() values in the job and in the database. To ensure that two successive ItemModifyJobs for the same Item work correctly, the revision number of the Item supplied to the second ItemModifyJob should be set equal to the Item's revision number on completion of the first ItemModifyJob. This can be obtained by, for example, calling item().revision() in the job's result slot.

Author: Volker Krause vkrau.nosp@m.se@k.nosp@m.de.or.nosp@m.g

Definition at line 81 of file itemmodifyjob.h.

Constructor & Destructor Documentation

◆ ItemModifyJob() [1/2]

ItemModifyJob::ItemModifyJob	(	const Item &	item,
		QObject *	parent = nullptr )

explicit

Creates a new item modify job.

Parameters

item	The modified item object to store.
parent	The parent object.

Definition at line 100 of file itemmodifyjob.cpp.

◆ ItemModifyJob() [2/2]

ItemModifyJob::ItemModifyJob	(	const Item::List &	items,
		QObject *	parent = nullptr )

explicit

Creates a new item modify job for bulk modifications.

Using this is different from running a modification job per item. Use this when applying the same change to a set of items, such as a mass-change of item flags, not if you just want to store a bunch of randomly modified items.

Currently the following modifications are supported:

flag changes

Note: Since this does not do payload modifications, it implies setIgnorePayload( true ) and disableRevisionCheck().

Parameters

items The list of items to modify, must not be empty.

Since: 4.6

Definition at line 116 of file itemmodifyjob.cpp.

◆ ~ItemModifyJob()

ItemModifyJob::~ItemModifyJob ( )

override

Destroys the item modify job.

Definition at line 134 of file itemmodifyjob.cpp.

Member Function Documentation

◆ disableAutomaticConflictHandling()

void ItemModifyJob::disableAutomaticConflictHandling ( )

Disables the automatic handling of conflicts.

By default the item modify job will bring up a dialog to resolve a conflict that might happen when modifying an item. Calling this method will avoid that and the job returns with an error in case of a conflict.

Since: 4.6

Definition at line 393 of file itemmodifyjob.cpp.

◆ disableRevisionCheck()

void ItemModifyJob::disableRevisionCheck ( )

Disables the check of the revision number.

Note: If disabled, no conflict detection is available.

Definition at line 386 of file itemmodifyjob.cpp.

◆ doHandleResponse()

bool ItemModifyJob::doHandleResponse	(	qint64	tag,
		const Protocol::CommandPtr &	response )

overrideprotectedvirtual

This method should be reimplemented in the concrete jobs in case you want to handle incoming data.

It will be called on received data from the backend. The default implementation does nothing.

Parameters

tag	The tag of the corresponding command, empty if this is an untagged response.
response	The received response

Returns: Implementations should return true if the last response was processed and the job can emit result. Return false if more responses from server are expected.

Reimplemented from Akonadi::Job.

Definition at line 266 of file itemmodifyjob.cpp.

◆ doStart()

void ItemModifyJob::doStart ( )

overrideprotectedvirtual

This method must be reimplemented in the concrete jobs.

It will be called after the job has been started and a connection to the Akonadi backend has been established.

Implements Akonadi::Job.

Definition at line 244 of file itemmodifyjob.cpp.

◆ ignorePayload()

bool ItemModifyJob::ignorePayload ( ) const

nodiscard

Returns whether the payload of the modified item shall be omitted from transmission to the Akonadi storage.

Definition at line 363 of file itemmodifyjob.cpp.

◆ item()

Item ItemModifyJob::item ( ) const

nodiscard

Returns the modified and stored item including the changed revision number.

Note: Use this method only when using the single item constructor.

Definition at line 400 of file itemmodifyjob.cpp.

◆ items()

Item::List ItemModifyJob::items ( ) const

nodiscard

Returns the modified and stored items including the changed revision number.

Since: 4.6

Definition at line 408 of file itemmodifyjob.cpp.

◆ setIgnorePayload()

void ItemModifyJob::setIgnorePayload ( bool ignore )

Sets whether the payload of the modified item shall be omitted from transmission to the Akonadi storage.

The default is false, however it can be set for performance reasons.

Parameters

ignore ignores payload if set as true

Definition at line 346 of file itemmodifyjob.cpp.

◆ setUpdateGid()

void ItemModifyJob::setUpdateGid ( bool update )

Sets whether the GID shall be updated either from the gid parameter or by extracting it from the payload.

The default is false to avoid unnecessarily update the GID, as it should never change once set, and the ItemCreateJob already sets it.

Parameters

update update the GID if set as true

Note: If disabled the GID will not be updated, but still be used for identification of the item.

Since: 4.12

Definition at line 370 of file itemmodifyjob.cpp.

◆ updateGid()

bool ItemModifyJob::updateGid ( ) const

nodiscard

Returns whether the GID should be updated.

Since: 4.12

Definition at line 380 of file itemmodifyjob.cpp.

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

KDE's Doxygen guidelines are available online.

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About Akonadi

Akonadi::ItemModifyJob

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Conflict Resolution

Constructor & Destructor Documentation

◆ ItemModifyJob() [1/2]

◆ ItemModifyJob() [2/2]

◆ ~ItemModifyJob()

Member Function Documentation

◆ disableAutomaticConflictHandling()

◆ disableRevisionCheck()

◆ doHandleResponse()

◆ doStart()

◆ ignorePayload()

◆ item()

◆ items()

◆ setIgnorePayload()

◆ setUpdateGid()

◆ updateGid()