Akonadi::ItemSync
#include <itemsync.h>
Public Types | |
enum | MergeMode { RIDMerge , GIDMerge } |
enum | TransactionMode { SingleTransaction , MultipleTransactions , NoTransaction } |
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 |
Signals | |
void | readyForNextBatch (int remainingBatchSize) |
void | transactionCommitted () |
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) |
Detailed Description
Syncs between items known to a client (usually a resource) and the Akonadi storage.
Remote Id must only be set by the resource storing the item, other clients should leave it empty, since the resource responsible for the target collection will be notified about the addition and then create a suitable remote Id.
There are two different forms of ItemSync usage:
- Full-Sync: meaning the client provides all valid items, i.e. any item not part of the list but currently stored in Akonadi will be removed
- Incremental-Sync: meaning the client provides two lists, one for items which are new or modified and one for items which should be removed. Any item not part of either list but currently stored in Akonadi will not be changed.
- Note
- This is provided for convenience to implement "save all" like behavior, however it is strongly recommended to use single item jobs whenever possible, e.g. ItemCreateJob, ItemModifyJob and ItemDeleteJob
Definition at line 40 of file itemsync.h.
Member Enumeration Documentation
◆ MergeMode
enum Akonadi::ItemSync::MergeMode |
Definition at line 45 of file itemsync.h.
◆ TransactionMode
Transaction mode used by ItemSync.
- Since
- 4.6
Definition at line 129 of file itemsync.h.
Constructor & Destructor Documentation
◆ ItemSync()
|
explicit |
Creates a new item synchronizer.
- Parameters
-
collection The collection we are syncing. timestamp Optional timestamp of itemsync start. Will be used to detect local changes that happen while the ItemSync is running. parent The parent object.
Definition at line 183 of file itemsync.cpp.
◆ ~ItemSync()
|
override |
Destroys the item synchronizer.
Definition at line 194 of file itemsync.cpp.
Member Function Documentation
◆ batchSize()
int ItemSync::batchSize | ( | ) | const |
Minimum number of items required to start processing in streaming mode.
When MultipleTransactions is used, one transaction per batch will be created.
- See also
- setBatchSize()
- Since
- 4.14
Definition at line 533 of file itemsync.cpp.
◆ deliveryDone()
void ItemSync::deliveryDone | ( | ) |
Notify ItemSync that all remote items have been delivered.
Only call this in streaming mode.
Definition at line 491 of file itemsync.cpp.
◆ 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 269 of file itemsync.cpp.
◆ mergeMode()
ItemSync::MergeMode ItemSync::mergeMode | ( | ) | const |
Returns current merge mode.
- See also
- setMergeMode()
- Since
- 5.1
Definition at line 545 of file itemsync.cpp.
◆ readyForNextBatch
|
signal |
Signals the resource that new items can be delivered.
- Parameters
-
remainingBatchSize the number of items required to complete the batch (typically the same as batchSize())
- Since
- 4.14
◆ rollback()
void ItemSync::rollback | ( | ) |
Aborts the sync process and rolls back all not yet committed transactions.
Use this if an external error occurred during the sync process (such as the user canceling it).
- Since
- 4.5
Definition at line 515 of file itemsync.cpp.
◆ setBatchSize()
void ItemSync::setBatchSize | ( | int | size | ) |
Set the batch size.
The default is 10.
- Note
- You must call this method before starting the sync, changes afterwards lead to undefined results.
- See also
- batchSize()
- Since
- 4.14
Definition at line 539 of file itemsync.cpp.
◆ setDisableAutomaticDeliveryDone()
void ItemSync::setDisableAutomaticDeliveryDone | ( | bool | disable | ) |
Disables the automatic completion of the item sync, based on the number of delivered items.
This ensures that the item sync only finishes once deliveryDone() is called, while still making it possible to use the progress reporting of the ItemSync.
- Note
- You must call this method before starting the sync, changes afterwards lead to undefined results.
- See also
- setTotalItems
- Since
- 4.14
Definition at line 238 of file itemsync.cpp.
◆ setFullSyncItems()
void ItemSync::setFullSyncItems | ( | const Item::List & | items | ) |
Sets the full item list for the collection.
Usually the result of a full item listing.
- Warning
- If the client using this is a resource, all items must have a valid remote identifier.
- Parameters
-
items A list of items.
Definition at line 198 of file itemsync.cpp.
◆ setIncrementalSyncItems()
void ItemSync::setIncrementalSyncItems | ( | const Item::List & | changedItems, |
const Item::List & | removedItems ) |
Sets the item lists for incrementally syncing the collection.
Usually the result of an incremental remote item listing.
- Warning
- If the client using this is a resource, all items must have a valid remote identifier.
- Parameters
-
changedItems A list of items added or changed by the client. removedItems A list of items deleted by the client.
Definition at line 244 of file itemsync.cpp.
◆ setMergeMode()
void ItemSync::setMergeMode | ( | MergeMode | mergeMode | ) |
Set what merge method should be used for next ItemSync run.
By default ItemSync uses RIDMerge method.
See ItemCreateJob for details on Item merging.
- Note
- You must call this method before starting the sync, changes afterwards lead to undefined results.
- See also
- mergeMode
- Since
- 4.14.11
Definition at line 551 of file itemsync.cpp.
◆ setStreamingEnabled()
void ItemSync::setStreamingEnabled | ( | bool | enable | ) |
Enable item streaming.
Item streaming means that the items delivered by setXItems() calls are delivered in chunks and you manually indicate when all items have been delivered by calling deliveryDone().
- Parameters
-
enable true
to enable item streaming
Definition at line 485 of file itemsync.cpp.
◆ setTotalItems()
void ItemSync::setTotalItems | ( | int | amount | ) |
Set the amount of items which you are going to return in total by using the setFullSyncItems()/setIncrementalSyncItems() methods.
- Warning
- By default the item sync will automatically end once sufficient items have been provided. To disable this use setDisableAutomaticDeliveryDone
- See also
- setDisableAutomaticDeliveryDone
- Parameters
-
amount The amount of items in total.
Definition at line 223 of file itemsync.cpp.
◆ setTransactionMode()
void ItemSync::setTransactionMode | ( | ItemSync::TransactionMode | mode | ) |
Set the transaction mode to use for this sync.
- Note
- You must call this method before starting the sync, changes afterwards lead to undefined results.
- Parameters
-
mode the transaction mode to use
- Since
- 4.6
Definition at line 527 of file itemsync.cpp.
◆ slotResult()
Reimplemented from KCompositeJob.
Definition at line 499 of file itemsync.cpp.
◆ transactionCommitted
|
signal |
Emitted whenever a transaction is committed. This is for testing only.
- Since
- 4.14
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