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<?php
namespace SMW\Query;
use SMW\DIProperty;
use SMW\DIWikiPage;
use SMW\Query\Language\ClassDescription;
use SMW\Query\Language\ConceptDescription;
use SMW\Query\Language\Conjunction;
use SMW\Query\Language\Description;
use SMW\Query\Language\Disjunction;
use SMW\Query\Language\NamespaceDescription;
use SMW\Query\Language\SomeProperty;
use SMW\Query\Language\ThingDescription;
use SMW\Query\Language\ValueDescription;
use SMWDataItem as DataItem;
use SMWDataValue as DataValue;
/**
* @license GNU GPL v2+
* @since 2.4
*
* @author mwjames
*/
class DescriptionFactory {
/**
* @since 2.4
*
* @param DataItem $dataItem
* @param DIProperty|null $property = null
* @param integer $comparator
*
* @return ValueDescription
*/
public function newValueDescription( DataItem $dataItem, DIProperty $property = null, $comparator = SMW_CMP_EQ ) {
return new ValueDescription( $dataItem, $property, $comparator );
}
/**
* @since 2.4
*
* @param DIProperty $property
* @param Description $description
*
* @return SomeProperty
*/
public function newSomeProperty( DIProperty $property, Description $description ) {
return new SomeProperty( $property, $description );
}
/**
* @since 2.4
*
* @return ThingDescription
*/
public function newThingDescription() {
return new ThingDescription();
}
/**
* @since 2.4
*
* @param Description[] $descriptions
*
* @return Disjunction
*/
public function newDisjunction( $descriptions = [] ) {
return new Disjunction( $descriptions );
}
/**
* @since 2.4
*
* @param Description[] $descriptions
*
* @return Conjunction
*/
public function newConjunction( $descriptions = [] ) {
return new Conjunction( $descriptions );
}
/**
* @since 2.4
*
* @param integer $ns
*
* @return NamespaceDescription
*/
public function newNamespaceDescription( $ns ) {
return new NamespaceDescription( $ns );
}
/**
* @since 2.4
*
* @param DIWikiPage|[] $category
*
* @return ClassDescription
*/
public function newClassDescription( $category ) {
return new ClassDescription( $category );
}
/**
* @since 2.4
*
* @param DIWikiPage $concept
*
* @return ConceptDescription
*/
public function newConceptDescription( DIWikiPage $concept ) {
return new ConceptDescription( $concept );
}
/**
* @since 2.4
*
* @param DataValue $dataValue
*
* @return Description
*/
public function newFromDataValue( DataValue $dataValue ) {
if ( !$dataValue->isValid() ) {
return $this->newThingDescription();
}
// Avoid circular reference when called from outside of the DV context
$dataValue->setOption( DataValue::OPT_QUERY_CONTEXT, true );
$description = $dataValue->getQueryDescription( $dataValue->getWikiValue() );
if ( $dataValue->getProperty() === null ) {
return $description;
}
return $this->newSomeProperty(
$dataValue->getProperty(),
$description
);
}
}
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