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<?php |
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namespace SEQL; |
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use SMW\DataValueFactory; |
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use SMW\DIProperty; |
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use SMW\DIWikiPage; |
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use SMWContainerSemanticData as ContainerSemanticData; |
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use SMWDIContainer as DIContainer; |
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use SMWDITime as DITime; |
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use SMWDIBlob as DIBlob; |
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/** |
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* @license GNU GPL v2+ |
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* @since 1.0 |
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* |
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* @author mwjames |
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*/ |
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class DataValueDeserializer { |
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/** |
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* @var string |
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*/ |
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private $querySource; |
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/** |
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* @var EmbeddedLinksReplacer |
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*/ |
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private $embeddedLinksReplacer; |
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/** |
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* @since 1.0 |
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* |
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* @param string $querySource |
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*/ |
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public function __construct( $querySource ) { |
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$this->querySource = $querySource; |
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$this->embeddedLinksReplacer = new EmbeddedLinksReplacer( $querySource ); |
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} |
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/** |
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* @since 1.0 |
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* |
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* @return string |
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*/ |
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public function getQuerySource() { |
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return $this->querySource; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param DIProperty $property |
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* @param array|string $value |
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* |
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* @return DataValue |
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*/ |
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public function newDataValueFrom( DIProperty $property, $value ) { |
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$dv = null; |
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$propertyList = array(); |
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if ( $property->findPropertyTypeId() === '_wpg' || isset( $value['fulltext'] ) ) { |
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$dv = $this->newDataValueFromDataItem( $property, $this->newDiWikiPage( $value ) ); |
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} elseif ( strpos( $property->findPropertyTypeId(), '_rec' ) !== false ) { |
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$dv = $this->newDataValueFromDataItem( $property, $this->newDiContainerOnRecordType( $value, $propertyList ) ); |
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$dv->setFieldProperties( $propertyList ); |
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} elseif ( $property->findPropertyTypeId() === '_dat' ) { |
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$dv = $this->newDataValueFromDataItem( $property, $this->newDiTime( $value ) ); |
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} elseif ( strpos( $property->findPropertyTypeId(), '_txt' ) !== false ) { |
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$dv = $this->newDataValueFromDataItem( $property, $this->newDiBlob( $value ) ); |
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} elseif ( $property->findPropertyTypeId() === '_qty' ) { |
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$dv = $this->newDataValueFromPropertyObject( $property, $value['value'] . ' ' . $value['unit'] ); |
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} |
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if ( $dv === null ) { |
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$dv = $this->newDataValueFromPropertyObject( $property, $value ); |
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} |
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return $dv; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param array $value |
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* |
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* @return DIWikiPage|false |
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*/ |
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public function newDiWikiPage( array $value ) { |
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if ( !isset( $value['namespace'] ) || !isset( $value['fulltext'] ) ) { |
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return false; |
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} |
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$ns = (int)$value['namespace'] === NS_CATEGORY ? NS_CATEGORY : NS_MAIN; |
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if ( $ns === NS_CATEGORY ) { |
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$value['fulltext'] = substr( $value['fulltext'], ($pos = strpos( $value['fulltext'], ':') ) !== false ? $pos + 1 : 0 ); |
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} |
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$title = \Title::newFromText( $this->querySource . ':' . str_replace(" ", "_", $value['fulltext'] ), $ns ); |
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return DIWikiPage::newFromTitle( $title ); |
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} |
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private function newDiTime( $value ) { |
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if ( isset( $value['raw'] ) ) { |
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return DITime::doUnserialize( $value['raw'] ); |
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} |
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// < 0.7 API format |
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// Avoid something like "Part of the date is out of bounds" where the API |
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// doesn't sent a raw format |
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// return 9999 BC to indicate that we hit a bounds with the timespamp |
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try{ |
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$dataItem = DITime::newFromTimestamp( $value ); |
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} catch ( \Exception $e ) { |
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$dataItem = DITime::doUnserialize( '2/-9999' ); |
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} |
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return $dataItem; |
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} |
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private function newDiBlob( $value ) { |
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return new DIBlob( $this->embeddedLinksReplacer->replace( $value ) ); |
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} |
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private function newDataValueFromPropertyObject( $property, $value ) { |
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try{ |
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$dv = DataValueFactory::newPropertyObjectValue( $property, $value ); |
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} catch ( \Exception $e ) { |
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$dv = false; |
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} |
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return $dv; |
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} |
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private function newDataValueFromDataItem( $property, $dataItem = false ) { |
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if ( $dataItem === false ) { |
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return false; |
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} |
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try{ |
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$dv = DataValueFactory::newDataItemValue( $dataItem, $property ); |
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} catch ( \Exception $e ) { |
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$dv = false; |
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} |
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return $dv; |
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} |
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private function newDiContainerOnRecordType( array $value, &$propertyList ) { |
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// Remote container to use an anonymous |
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$semanticData = ContainerSemanticData::makeAnonymousContainer(); |
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foreach ( $value as $recValue ) { |
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$recordProperty = DIProperty::newFromUserLabel( $recValue['label'] ); |
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$recordProperty->setInterwiki( $this->querySource ); |
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$recordProperty->setPropertyTypeId( $recValue['typeid'] ); |
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$propertyList[] = $recordProperty; |
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foreach ( $recValue['item'] as $item ) { |
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$dataValue = $this->newDataValueFrom( $recordProperty, $item ); |
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if ( $dataValue === false ) { |
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continue; |
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} |
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$semanticData->addPropertyObjectValue( $recordProperty, $dataValue->getDataItem() ); |
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} |
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} |
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return new DIContainer( $semanticData ); |
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} |
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} |
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This check looks at variables that are passed out again to other methods.
If the outgoing method call has stricter type requirements than the method itself, an issue is raised.
An additional type check may prevent trouble.