/usr/include/akonadi/itemfetchjob.h is in kdepimlibs5-dev 4:4.8.5-0ubuntu0.3.
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Copyright (c) 2006 - 2007 Volker Krause <vkrause@kde.org>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#ifndef AKONADI_ITEMFETCHJOB_H
#define AKONADI_ITEMFETCHJOB_H
#include <akonadi/item.h>
#include <akonadi/job.h>
namespace Akonadi {
class Collection;
class ItemFetchJobPrivate;
class ItemFetchScope;
/**
* @short Job that fetches items from the Akonadi storage.
*
* This class is used to fetch items from the Akonadi storage.
* Which parts of the items (e.g. headers only, attachments or all)
* can be specified by the ItemFetchScope.
*
* Note that ItemFetchJob does not refresh the Akonadi storage from the
* backend; this is unnecessary due to the fact that backend updates
* automatically trigger an update to the Akonadi database whenever they occur
* (unless the resource is offline).
*
* Note that items can not be created in the root collection (Collection::root())
* and therefore can not be fetched from there either. That is - an item fetch in
* the root collection will yield an empty list.
*
*
* Example:
*
* @code
*
* // Fetch all items with full payload from a collection
*
* const Collection collection = getCollection();
*
* Akonadi::ItemFetchJob *job = new Akonadi::ItemFetchJob( collection );
* connect( job, SIGNAL( result( KJob* ) ), SLOT( jobFinished( KJob* ) ) );
* job->fetchScope().fetchFullPayload();
*
* ...
*
* MyClass::jobFinished( KJob *job )
* {
* if ( job->error() ) {
* qDebug() << "Error occurred";
* return;
* }
*
* Akonadi::ItemFetchJob *fetchJob = qobject_cast<Akonadi::ItemFetchJob*>( job );
*
* const Akonadi::Item::List items = fetchJob->items();
* foreach ( const Akonadi::Item &item, items ) {
* qDebug() << "Item ID:" << item.id();
* }
* }
*
* @endcode
*
* @author Volker Krause <vkrause@kde.org>
*/
class AKONADI_EXPORT ItemFetchJob : public Job
{
Q_OBJECT
public:
/**
* Creates a new item fetch job that retrieves all items inside the given collection.
*
* @param collection The parent collection to fetch all items from.
* @param parent The parent object.
*/
explicit ItemFetchJob( const Collection &collection, QObject *parent = 0 );
/**
* Creates a new item fetch job that retrieves the specified item.
* If the item has a uid set, this is used to identify the item on the Akonadi
* server. If only a remote identifier is available, that is used.
* However, as remote identifiers are not necessarily globally unique, you
* need to specify the resource and/or collection to search in in that case,
* using setCollection() or Akonadi::ResourceSelectJob.
*
* @param item The item to fetch.
* @param parent The parent object.
*/
explicit ItemFetchJob( const Item &item, QObject *parent = 0 );
/**
* Creates a new item fetch job that retrieves the specified items.
* If the items have a uid set, this is used to identify the item on the Akonadi
* server. If only a remote identifier is available, that is used.
* However, as remote identifiers are not necessarily globally unique, you
* need to specify the resource and/or collection to search in in that case,
* using setCollection() or Akonadi::ResourceSelectJob.
*
* @param items The items to fetch.
* @param parent The parent object.
* @since 4.4
*/
explicit ItemFetchJob( const Item::List &items, QObject *parent = 0 );
/**
* Convenience ctor equivalent to ItemFetchJob( const Item::List &items, QObject *parent = 0 )
* @since 4.8
*/
explicit ItemFetchJob( const QList<Item::Id> &items, QObject *parent = 0 );
/**
* Destroys the item fetch job.
*/
virtual ~ItemFetchJob();
/**
* Returns the fetched item.
*
* @note The items are invalid before the result( KJob* )
* signal has been emitted or if an error occurred.
*/
Item::List items() const;
/**
* 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.
*
* @param fetchScope The new scope for item fetch operations.
*
* @see fetchScope()
*/
void setFetchScope( ItemFetchScope &fetchScope ); // KDE5: remove
/**
* 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.
*
* @param fetchScope The new scope for item fetch operations.
*
* @see fetchScope()
* @since 4.4
*/
void setFetchScope( const ItemFetchScope &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.
*
* @return a reference to the current item fetch scope
*
* @see setFetchScope() for replacing the current item fetch scope
*/
ItemFetchScope &fetchScope();
/**
* Specifies the collection the item is in.
* This is only required when retrieving an item based on its remote id which might not be
* unique globally.
*
* @see Akonadi::ResourceSelectJob
*/
void setCollection( const Collection &collection );
Q_SIGNALS:
/**
* This signal is emitted whenever new items have been fetched completely.
*
* @note This is an optimization; instead of waiting for the end of the job
* and calling items(), you can connect to this signal and get the items
* incrementally.
*
* @param items The fetched items.
*/
void itemsReceived( const Akonadi::Item::List &items );
protected:
virtual void doStart();
virtual void doHandleResponse( const QByteArray &tag, const QByteArray &data );
private:
Q_DECLARE_PRIVATE( ItemFetchJob )
//@cond PRIVATE
Q_PRIVATE_SLOT( d_func(), void selectDone( KJob* ) )
Q_PRIVATE_SLOT( d_func(), void timeout() )
//@endcond
};
}
#endif
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