Akonadi::PreprocessorBase

Akonadi::PreprocessorBase Class Referenceabstract

#include <preprocessorbase.h>

Inheritance diagram for Akonadi::PreprocessorBase:

Public Types

enum  ProcessingResult { ProcessingCompleted, ProcessingDelayed, ProcessingFailed, ProcessingRefused }
 
- Public Types inherited from Akonadi::AgentBase
enum  Status { Idle = 0, Running, Broken, NotConfigured }
 

Public Member Functions

ItemFetchScopefetchScope ()
 
void finishProcessing (ProcessingResult result)
 
virtual ProcessingResult processItem (const Item &item)=0
 
void setFetchScope (const ItemFetchScope &fetchScope)
 
- Public Member Functions inherited from Akonadi::AgentBase
QString agentName () const
 
virtual void cleanup ()
 
QString identifier () const
 
virtual int progress () const
 
virtual QString progressMessage () const
 
void registerObserver (Observer *observer)
 
void setAgentName (const QString &name)
 
virtual int status () const
 
virtual QString statusMessage () const
 
WId winIdForDialogs () const
 
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 
bool blockSignals (bool block)
 
const QObjectListchildren () 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 ()
 
void dumpObjectInfo () const const
 
void dumpObjectTree ()
 
void dumpObjectTree () const const
 
QList< QByteArraydynamicPropertyNames () const const
 
virtual bool event (QEvent *e)
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 
findChild (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
 
bool inherits (const char *className) const const
 
void installEventFilter (QObject *filterObj)
 
bool isWidgetType () const const
 
bool isWindowType () const const
 
void killTimer (int id)
 
virtual const QMetaObjectmetaObject () const const
 
void moveToThread (QThread *targetThread)
 
QString objectName () const const
 
void objectNameChanged (const QString &objectName)
 
QObjectparent () const const
 
QVariant property (const char *name) const const
 
 Q_CLASSINFO (Name, Value)
 
 Q_DISABLE_COPY (Class)
 
 Q_DISABLE_COPY_MOVE (Class)
 
 Q_DISABLE_MOVE (Class)
 
 Q_EMIT Q_EMIT
 
 Q_ENUM (...)
 
 Q_ENUM_NS (...)
 
 Q_ENUMS (...)
 
 Q_FLAG (...)
 
 Q_FLAG_NS (...)
 
 Q_FLAGS (...)
 
 Q_GADGET Q_GADGET
 
 Q_INTERFACES (...)
 
 Q_INVOKABLE Q_INVOKABLE
 
 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
 
qFindChild (const QObject *obj, const QString &name)
 
QList< T > qFindChildren (const QObject *obj, const QRegExp &regExp)
 
QList< T > qFindChildren (const QObject *obj, const QString &name)
 
qobject_cast (QObject *object)
 
qobject_cast (const QObject *object)
 
 QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
 
void removeEventFilter (QObject *obj)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const char *name, const QVariant &value)
 
bool signalsBlocked () const const
 
int startTimer (int interval, Qt::TimerType timerType)
 
int startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
 
QThreadthread () const const
 

Protected Member Functions

 PreprocessorBase (const QString &id)
 
 ~PreprocessorBase () override
 
- Protected Member Functions inherited from Akonadi::AgentBase
 AgentBase (const QString &id)
 
 ~AgentBase ()
 
virtual KAboutData aboutData () const
 
virtual void aboutToQuit ()
 
void changeProcessed ()
 
ChangeRecorderchangeRecorder () const
 
KSharedConfigPtr config ()
 
virtual void doSetOnline (bool online)
 
bool isOnline () const
 
void setNeedsNetwork (bool needsNetwork)
 
void setOnline (bool state)
 
void setTemporaryOffline (int makeOnlineInSeconds=300)
 
- 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
 
QObjectsender () const const
 
int senderSignalIndex () const const
 
virtual void timerEvent (QTimerEvent *event)
 
- Protected Member Functions inherited from QDBusContext
bool calledFromDBus () const const
 
QDBusConnection connection () const const
 
bool isDelayedReply () const const
 
const QDBusMessagemessage () const const
 
void sendErrorReply (QDBusError::ErrorType type, const QString &msg) const const
 
void sendErrorReply (const QString &name, const QString &msg) const const
 
void setDelayedReply (bool enable) const const
 

Additional Inherited Members

- Properties inherited from QObject
 objectName
 
- Signals inherited from Akonadi::AgentBase
void abortRequested ()
 
void advancedStatus (const QVariantMap &status)
 
void agentNameChanged (const QString &name)
 
void configurationDialogAccepted ()
 
void configurationDialogRejected ()
 
void error (const QString &message)
 
void onlineChanged (bool online)
 
void percent (int progress)
 
void reloadConfiguration ()
 
void status (int status, const QString &message=QString())
 
void warning (const QString &message)
 
- Public Slots inherited from Akonadi::AgentBase
virtual void configure (WId windowId)
 
- Static Public Member Functions inherited from Akonadi::AgentBase
template<typename T >
static int init (int argc, char **argv)
 
- 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 *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
 
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, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
 
bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
 
QString tr (const char *sourceText, const char *disambiguation, int n)
 
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
 
- Public Attributes inherited from QObject
typedef QObjectList
 

Detailed Description

The base class for all Akonadi preprocessor agents.

This class should be used as a base class by all preprocessor agents since it encapsulates large parts of the protocol between preprocessor agent, agent manager and the Akonadi storage.

Preprocessor agents are special agents that are informed about newly added items before any other agents. This allows them to do filtering on the items or any other task that shall be done before the new item is visible in the Akonadi storage system.

The method all the preprocessors must implement is processItem().

Author
Szymon Stefanek s.ste[email protected]fane[email protected][email protected][email protected]il.c[email protected]om
Since
4.4

Definition at line 54 of file preprocessorbase.h.

Member Enumeration Documentation

Describes the possible return values of the processItem() method.

Enumerator
ProcessingCompleted 

Processing completed successfully for this item.

The Akonadi server will push in a new item when it's available.

ProcessingDelayed 

Processing was delayed to a later stage.

This must be returned when implementing asynchronous preprocessing.

If this value is returned, finishProcessing() has to be called when processing is done.

ProcessingFailed 

Processing for this item failed (and the failure is unrecoverable).

The Akonadi server will push in a new item when it's available, after possibly logging the failure.

ProcessingRefused 

Processing for this item was refused.

This is very similar to ProcessingFailed above but additionally remarks that the item that the Akonadi server pushed in wasn't meant for this Preprocessor. The Akonadi server will push in a new item when it's available, after possibly logging the failure and maybe taking some additional action.

Definition at line 62 of file preprocessorbase.h.

Constructor & Destructor Documentation

PreprocessorBase::PreprocessorBase ( const QString id)
protected

Creates a new preprocessor base agent.

Parameters
idThe instance id of the preprocessor base agent.

Definition at line 30 of file preprocessorbase.cpp.

PreprocessorBase::~PreprocessorBase ( )
overrideprotected

Destroys the preprocessor base agent.

Definition at line 35 of file preprocessorbase.cpp.

Member Function Documentation

ItemFetchScope & PreprocessorBase::fetchScope ( )

Returns the item fetch scope.

Since this returns a reference it can be used to conveniently modify the current scope in-place, i.e. by calling a method on the returned reference without storing it in a local variable. See the ItemFetchScope documentation for an example.

Returns
a reference to the current item fetch scope
See also
setFetchScope() for replacing the current item fetch scope

Definition at line 58 of file preprocessorbase.cpp.

void PreprocessorBase::finishProcessing ( ProcessingResult  result)

This method must be called if processing is implemented asynchronously.

Parameters
resultthe processing result You should call it when you have completed the processing or if an abortRequest() signal arrives (and in this case you will probably use ProcessingFailed as result).

Valid values for result are ProcessingCompleted, PocessingRefused and ProcessingFailed. Passing any other value will lead to a runtime assertion.

Definition at line 39 of file preprocessorbase.cpp.

virtual ProcessingResult Akonadi::PreprocessorBase::processItem ( const Item &  item)
pure virtual

This method must be implemented by every preprocessor subclass.

Parameters
itemthe item to process It must realize the preprocessing of the given item.

The Akonadi server will push in for preprocessing any newly created item: it's your responsibility to decide if you want to process the item or not.

The method should return ProcessingCompleted on success, ProcessingDelayed if processing is implemented asynchronously and ProcessingRefused or ProcessingFailed if the processing didn't complete.

If your operation is asynchronous then you should also connect to the abortRequested() signal and handle it appropriately (as the server MAY abort your async job if it decides that it's taking too long).

void PreprocessorBase::setFetchScope ( const ItemFetchScope fetchScope)

Sets the item fetch scope.

The ItemFetchScope controls how much of an item's data is fetched from the server, e.g. whether to fetch the full item payload or only meta data.

Parameters
fetchScopeThe new scope for item fetch operations.
See also
fetchScope()

Definition at line 51 of file preprocessorbase.cpp.


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