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<?php
namespace SMW\SQLStore\QueryDependency;
use Psr\Log\LoggerAwareTrait;
use SMW\SQLStore\ChangeOp\ChangeOp;
use SMW\Store;
use SMW\Utils\Timer;
/**
* This class filters entities recorded in the ChangeOp
* and applies a relevance rule set by:
*
* - Remove exempted properties (not relevant)
* - Add properties that are affiliated on a relational change
*
* By affiliation implies that a property listed is not directly related to a query
* dependency, yet it is monitored and can, if altered trigger a dependency update
* that normally is only reserved to dependent properties.
*
* @license GNU GPL v2+
* @since 2.4
*
* @author mwjames
*/
class EntityIdListRelevanceDetectionFilter {
use LoggerAwareTrait;
/**
* @var Store
*/
private $store = null;
/**
* @var ChangeOp
*/
private $changeOp = null;
/**
* @var array
*/
private $propertyExemptionList = [];
/**
* @var array
*/
private $affiliatePropertyDetectionList = [];
/**
* @since 2.4
*
* @param Store $store
* @param ChangeOp $changeOp
*/
public function __construct( Store $store, ChangeOp $changeOp ) {
$this->store = $store;
$this->changeOp = $changeOp;
}
/**
* @since 3.0
*
* @return DIWikiPage
*/
public function getSubject() {
return $this->changeOp->getSubject();
}
/**
* @since 2.4
*
* @param array $propertyExemptionList
*/
public function setPropertyExemptionList( array $propertyExemptionList ) {
$this->propertyExemptionList = array_flip(
str_replace( ' ', '_', $propertyExemptionList )
);
}
/**
* @since 2.4
*
* @param array $affiliatePropertyDetectionList
*/
public function setAffiliatePropertyDetectionList( array $affiliatePropertyDetectionList ) {
$this->affiliatePropertyDetectionList = array_flip(
str_replace( ' ', '_', $affiliatePropertyDetectionList )
);
}
/**
* @since 2.4
*
* @return array
*/
public function getFilteredIdList() {
Timer::start( __CLASS__ );
$changedEntityIdSummaryList = array_flip(
$this->changeOp->getChangedEntityIdSummaryList()
);
$affiliateEntityList = [];
$tableChangeOps = $this->changeOp->getTableChangeOps();
foreach ( $tableChangeOps as $tableChangeOp ) {
$this->applyFilterToTableChangeOp(
$tableChangeOp,
$affiliateEntityList,
$changedEntityIdSummaryList
);
}
$filteredIdList = array_merge(
array_keys( $changedEntityIdSummaryList ),
array_keys( $affiliateEntityList )
);
$this->logger->info(
[
'QueryDependency',
'EntityIdListRelevanceDetectionFilter',
'Filter changeOp list',
'procTime in sec: {procTime}'
],
[
'method' => __METHOD__,
'role' => 'developer',
'procTime' => Timer::getElapsedTime( __CLASS__, 6 )
]
);
return $filteredIdList;
}
private function applyFilterToTableChangeOp( $tableChangeOp, &$affiliateEntityList, &$changedEntityIdSummaryList ) {
foreach ( $tableChangeOp->getFieldChangeOps( 'insert' ) as $insertFieldChangeOp ) {
// Copy fields temporarily
if ( $tableChangeOp->isFixedPropertyOp() ) {
$insertFieldChangeOp->set( 'p_id', $tableChangeOp->getFixedPropertyValueBy( 'p_id' ) );
$insertFieldChangeOp->set( 'key', $tableChangeOp->getFixedPropertyValueBy( 'key' ) );
}
$this->modifyEntityList( $insertFieldChangeOp, $affiliateEntityList, $changedEntityIdSummaryList );
}
foreach ( $tableChangeOp->getFieldChangeOps( 'delete' ) as $deleteFieldChangeOp ) {
if ( $tableChangeOp->isFixedPropertyOp() ) {
$deleteFieldChangeOp->set( 'p_id', $tableChangeOp->getFixedPropertyValueBy( 'p_id' ) );
$deleteFieldChangeOp->set( 'key', $tableChangeOp->getFixedPropertyValueBy( 'key' ) );
}
$this->modifyEntityList( $deleteFieldChangeOp, $affiliateEntityList, $changedEntityIdSummaryList );
}
}
private function modifyEntityList( $fieldChangeOp, &$affiliateEntityList, &$changedEntityIdSummaryList ) {
$key = '';
if ( $fieldChangeOp->has( 'key' ) ) {
$key = $fieldChangeOp->get( 'key' );
} elseif ( $fieldChangeOp->has( 'p_id' ) ) {
$dataItem = $this->store->getObjectIds()->getDataItemById( $fieldChangeOp->get( 'p_id' ) );
$key = $dataItem !== null ? $dataItem->getDBKey() : null;
}
// Exclusion before inclusion
if ( isset( $this->propertyExemptionList[$key]) ) {
$this->unsetEntityList( $fieldChangeOp, $changedEntityIdSummaryList );
return;
}
if ( isset( $this->affiliatePropertyDetectionList[$key] ) && $fieldChangeOp->has( 's_id' ) ) {
$affiliateEntityList[$fieldChangeOp->get( 's_id' )] = true;
}
}
private function unsetEntityList( $fieldChangeOp, &$changedEntityIdSummaryList ) {
// Remove matched blacklisted property reference
if ( $fieldChangeOp->has( 'p_id' ) ) {
unset( $changedEntityIdSummaryList[$fieldChangeOp->get( 'p_id' )] );
}
// Remove associated subject ID's
if ( $fieldChangeOp->has( 's_id' ) ) {
unset( $changedEntityIdSummaryList[$fieldChangeOp->get( 's_id' )] );
}
}
}
|
