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<?php
namespace SMW\Exporter\ResourceBuilders;
use SMW\DataValueFactory;
use SMW\DIProperty;
use SMWDataItem as DataItem;
use SMWDIBlob as DIBlob;
use SMWExpData as ExpData;
use SMWImportValue as ImportValue;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class ImportFromPropertyValueResourceBuilder extends PredefinedPropertyValueResourceBuilder {
/**
* @since 2.5
*
* {@inheritDoc}
*/
public function isResourceBuilderFor( DIProperty $property ) {
return $property->getKey() === '_IMPO';
}
/**
* @since 2.5
*
* {@inheritDoc}
*/
public function addResourceValue( ExpData $expData, DIProperty $property, DataItem $dataItem ) {
$diSubject = $expData->getSubject()->getDataItem();
if ( $diSubject === null ) {
return;
}
$expNsResource = $this->exporter->getSpecialPropertyResource(
$property->getKey(),
$diSubject->getNamespace()
);
if ( $expNsResource === null ) {
return;
}
$dataValue = DataValueFactory::getInstance()->newDataValueByItem(
$dataItem,
$property
);
if ( !$dataValue instanceof ImportValue ) {
return;
}
$expData->addPropertyObjectValue(
$expNsResource,
$this->exporter->getDataItemExpElement( new DIBlob( $dataValue->getImportReference() ) )
);
$this->addResourceHelperValue(
$expData,
$property,
$dataItem
);
}
}
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