Public Member Functions | |
| __construct (Title $title, $params=[]) | |
| run () | |
 Public Member Functions inherited from SMW\MediaWiki\Job | |
| setStore (Store $store) | |
| isEnabledJobQueue ( $enableJobQueue=true) | |
| pushToJobQueue () | |
| getType () | |
| getJobCount () | |
| hasParameter ( $key) | |
| getParameter ( $key, $default=false) | |
| setParameter ( $key, $value) | |
| insert () | |
| lazyPush () | |
| setDelay ( $delay) | |
| ignoreDuplicates () | |
| waitOnCommandLineMode () | |
Static Public Member Functions | |
| static | planAsJob (DIWikiPage $subject, $params=[]) |
| static | cleanUp (DIWikiPage $subject) |
| static | hasPendingJobs (DIWikiPage $subject) |
| static | getPendingJobsCount (DIWikiPage $subject) |
| Static Public Member Functions inherited from SMW\MediaWiki\Job | |
| static | batchInsert ( $jobs) |
| static | newRootJobParams ( $key='', $title='') |
Public Attributes | |
| const | CHUNK_SIZE = 1000 |
| const | CACHE_NAMESPACE = 'smw:chgprop' |
Additional Inherited Members | |
| Protected Member Functions inherited from SMW\MediaWiki\Job | |
| getJobQueue () | |
| Protected Attributes inherited from SMW\MediaWiki\Job | |
| $isEnabledJobQueue = true | |
| $jobQueue | |
| $jobs = [] | |
| $store = null | |
Detailed Description
ChangePropagationDispatchJob dispatches update jobs via ChangePropagationUpdateJob to allow isolating the execution and count pending jobs without using an extra tracking mechanism during an update process.
ChangePropagationUpdateJob (and hereby ChangePropagationClassUpdateJob) itself relies on the UpdateJob to initiate the update.
ChangePropagationDispatchJob is responsible for:
- Select entities that are being connected to a property specification change
- Once the selection process has been finalized, update the property with the new specification (which has been locked before this update)
Due to the possibility that a large list of entities can be connected to a property and its change, an iterative or recursive processing is not viable (as the changed specification should be available as soon as possible) therefore the selection process will move the result of entities to chunked temp files to avoid having to use a DB connection during the process (has been observed during tests that would lead to an out-of-memory) to store a list of entities that require an update.
GNU GPL v2+
- Since
- 3.0
Constructor & Destructor Documentation
◆ __construct()
| SMW\MediaWiki\Jobs\ChangePropagationDispatchJob::__construct | ( | Title | $title, |
$params = [] |
|||
| ) |
- Since
- 3.0
- Parameters
-
Title $title array $params
Member Function Documentation
◆ cleanUp()
|
static |
- Since
- 3.0
- Parameters
-
DIWikiPage $subject
◆ getPendingJobsCount()
|
static |
Use as very simple heuristic to count pending jobs for the overall change propagation. The count will indicate any job related to the change propagation and does not distinguish by changes to a specific property.
- Since
- 3.0
- Parameters
-
DIWikiPage $subject
- Returns
- integer
◆ hasPendingJobs()
|
static |
◆ planAsJob()
|
static |
Called from PropertyChangePropagationNotifier
- Since
- 3.0
- Parameters
-
DIWikiPage $subject array $params
- Returns
- boolean
◆ run()
| SMW\MediaWiki\Jobs\ChangePropagationDispatchJob::run | ( | ) |
- See also
- Job::run
- Since
- 3.0
Member Data Documentation
◆ CACHE_NAMESPACE
| const SMW\MediaWiki\Jobs\ChangePropagationDispatchJob::CACHE_NAMESPACE = 'smw:chgprop' |
Temp marker namespace
◆ CHUNK_SIZE
| const SMW\MediaWiki\Jobs\ChangePropagationDispatchJob::CHUNK_SIZE = 1000 |
Size of rows stored in a temp file
The documentation for this class was generated from the following file:
- ChangePropagationDispatchJob.php
